I am trying to integrate the JSF with spring and hibernate.
Following is my code:
LeaveBean.java
package com.nagra.bean;
import java.io.Serializable;
import java.sql.SQLException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.annotation.Resource;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import org.hibernate.HibernateException;
import com.nagra.leaveapp.BO.LeaveInfoBo;
import com.nagra.leaveapp.model.LeaveInfo;
#ManagedBean(name="customer")
#SessionScoped
public class LeaveBean implements Serializable{
/**
*
*/
//private LeaveAppDo leaveAppDo=new LeaveAppDo();
LeaveInfoBo leaveinfoBo;
public LeaveInfoBo getLeaveinfoBo() {
return leaveinfoBo;
}
public void setLeaveinfoBo(LeaveInfoBo leaveinfoBo) {
this.leaveinfoBo = leaveinfoBo;
}
private String total_sick_leave;
private String total_paidoff_leave;
private String start_date;
private String end_date;
private String reason;
private String status;
private Date secondDate;
public Date getSecondDate() {
return secondDate;
}
public void setSecondDate(Date secondDate) {
this.secondDate = secondDate;
}
public String getTotal_sick_leave() {
return total_sick_leave;
}
public void setTotal_sick_leave(String total_sick_leave) {
this.total_sick_leave = total_sick_leave;
}
public String getTotal_paidoff_leave() {
return total_paidoff_leave;
}
public void setTotal_paidoff_leave(String total_paidoff_leave) {
this.total_paidoff_leave = total_paidoff_leave;
}
public String getStart_date() {
return start_date;
}
public void setStart_date(String start_date) {
this.start_date = start_date;
}
public String getEnd_date() {
return end_date;
}
public void setEnd_date(String end_date) {
this.end_date = end_date;
}
public String getReason() {
return reason;
}
public void setReason(String reason) {
this.reason = reason;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
private static final long serialVersionUID = 1L;
//resource injection
#Resource(name="jdbc/leaveapp")
//private DataSource ds;
//if resource inject is not support, you still can get it manually.
/*public CustomerBean(){
try {
Context ctx = new InitialContext();
ds = (DataSource)ctx.lookup("jdbc:mysql://localhost:3306/leaveapp");
} catch (NamingException e) {
e.printStackTrace();
}
}*/
public List<LeaveInfo> getCustomerList() throws SQLException{
System.out.println("Getting In " );
return null;
// return leaveinfoBo.retrieveData();
}
public String addCustomer() throws HibernateException
{
/* String url = "jdbc:mysql://localhost:3306/leaveapp";
Connection con = DriverManager.getConnection(url,"root","root");
System.out.println(con);
if(con==null)
throw new SQLException("Can't get database connection");
String sql="insert into leaveinformation(start_date,end_date,reason,status)values(?,?,?,?)";
java.util.Date utilDate = new Date();
// Convert it to java.sql.Date
java.sql.Date date = new java.sql.Date(utilDate.getTime());
java.sql.Timestamp sqlDate = new java.sql.Timestamp(new java.util.Date().getTime());*/
DateFormat formatter ;
try
{
System.out.println("Start date " + getStart_date());
formatter = new SimpleDateFormat("yyyy-MM-dd");
Date startDate = formatter.parse(LeaveBean.this.getStart_date());
System.out.println(startDate);
Date endDate = formatter.parse(LeaveBean.this.getEnd_date());
// Days d = Days.daysBetween(startDate,endDate);
// int days = d.getDays();
#SuppressWarnings("deprecation")
java.sql.Date startdate=new java.sql.Date(startDate.getDate());
#SuppressWarnings("deprecation")
java.sql.Date enddate=new java.sql.Date(endDate.getDate());
/* System.out.println("Today is " +date );
PreparedStatement ps
= con.prepareStatement(sql);
ps.setDate(1,startdate,Calendar.getInstance(Locale.ENGLISH));
ps.setDate(2,enddate,Calendar.getInstance(Locale.ENGLISH));
ps.setString(3,CustomerBean.this.reason);
ps.setString(4,"Waiting");*/
LeaveInfo leave = new LeaveInfo();
System.out.println("Entering addCustomer() ");
leave.setEnd_date(enddate);
leave.setStart_date(startdate);
leave.setReason(reason);
leave.setStatus("Waiting");
System.out.println(leave.toString());
leaveinfoBo.save(leave);
clearall();
// Insert the row
/* ps.executeUpdate();
con.close();*/
sendmail();
}
catch(Exception e)
{
System.out.println("There is an error " + e.getStackTrace().toString());
e.printStackTrace();
}
return "";
}
private void clearall() {
// TODO Auto-generated method stub
setEnd_date("");
setStart_date("");
setReason("");
setStatus("");
}
public String sendmail()
{
// Recipient's email ID needs to be mentioned.
String to = "nsbharathi88#gmail.com";
// Sender's email ID needs to be mentioned
String from = "web#gmail.com";
// Assuming you are sending email from localhost
String host = "localhost";
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", host);
// Get the default Session object.
Session session = Session.getDefaultInstance(properties);
try{
// Create a default MimeMessage object.
MimeMessage message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.addRecipient(Message.RecipientType.TO,
new InternetAddress(to));
// Set Subject: header field
message.setSubject("This is the Subject Line!");
// Now set the actual message
message.setText("This is actual message");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
}catch (MessagingException mex) {
mex.printStackTrace();
}
return "";
}
}
applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<!-- Database Configuration -->
<import resource="classes/spring/database/DataSource.xml"/>
<import resource="classes/spring/database/Hibernate.xml"/>
<!-- Beans Declaration -->
<import resource="classes/spring/bean/LeaveApp.xml"/>
</beans>
I am getting the following error when i run this on the tomcat server:
Start date 2012-02-03
java.lang.NullPointerException
at com.nagra.bean.LeaveBean.addCustomer(LeaveBean.java:167)
Fri Feb 03 00:00:00 IST 2012
Entering addCustomer()
LeaveInfo [id=0, total_sick_leave=15, total_paidoff_leave=15, start_date=1970-01- 01, end_date=1970-01-01, reason=cfklsn, status=Waiting]
There is an error [Ljava.lang.StackTraceElement;#fc644a
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
I think, your startdate and enddate is of type String, Change it to java.util.Date and try
start_date=1970-01- 01
Your start date has a space in it. It wont parse.
Related
I am using nifi 1.6 and get the following errors when trying to modify a clone of an incoming flowFile:
[1]"unable to find content for FlowFile: ... MissingFlowFileException
...
Caused by ContentNotFoundException: Could not find contetn for StandardClaim
...
Caused by java.io.EOFException: null"
[2]"FlowFileHandlingException: StandardFlowFileRecord... is not known in this session"
The first error occurs when trying to access the contents of the flow file, the second when removing the flow file from the session (within a catch of the first). This process is known to have worked under nifi 0.7.
The basic process is:
Clone the incoming flow file
Write to the clone
Write to the clone again (some additional formatting)
Repeat 1-3
The error occurs on the second iteration step 3.
An interesting point is that if immediately after the clone is performed, a session.read of the clone is done everything works fine. The read seems to reset some pointer.
I have created unit tests for this processor, but they do not fail in either case.
Below is code simplified from the actual version in use that demonstrates the issue. (The development system is not connected so I had to copy the code. Please forgive any typos - it should be close. This is also why a full stack trace is not provided.) The processor doing the work has a property to determine if an immediate read should be done, or not. So both scenarios can be performed easily. To set it up, all that is needed is a GetFile processor to supply the input and terminators for the output from the SampleCloningProcessor. A sample input file is included as well. The meat of the code is in the onTrigger and manipulate methods. The manipulation in this simplified version really don't do anything but copy the input to the output.
Any insights into why this is happening and suggestions for corrections will be appreciated - thanks.
SampleCloningProcessor.java
processor sample.package.cloning
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.util.Arrays;
import java.util.Hashset;
import java.util.List;
import java.util.Scanner;
import java.util.Set;
import org.apache.commons.compress.utils.IOUtils;
import org.apache.nifi.annotation.documentaion.CapabilityDescription;
import org.apache.nifi.annotation.documentaion.Tags;
import org.apache.nifi.componets.PropertyDescriptor;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessorContext;
import org.apache.nifi.processor.ProcessorSession;
import org.apache.nifi.processor.ProcessorInitioalizationContext;
import org.apache.nifi.processor.Relationship;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.processor.io.InputStreamCalback;
import org.apache.nifi.processor.io.OutputStreamCalback;
import org.apache.nifi.processor.io.StreamCalback;
import org.apache.nifi.processor.util.StandardValidators;
import com.google.gson.Gson;
#Tags({"example", "clone"})
#CapabilityDescription("Demonsrates cloning of flowfile failure.")
public class SampleCloningProcessor extend AbstractProcessor {
/* Determines if an immediate read is performed after cloning of inoming flowfile. */
public static final PropertyDescriptor IMMEDIATE_READ = new PropertyDescriptor.Builder()
.name("immediateRead")
.description("Determines if processor runs successfully. If a read is done immediatly "
+ "after the clone of the incoming flowFile, then the processor should run successfully.")
.required(true)
.allowableValues("true", "false")
.defaultValue("true")
.addValidator(StandardValidators.BOLLEAN_VALIDATOR)
.build();
public static final Relationship SUCCESS = new Relationship.Builder().name("success").
description("No unexpected errors.").build();
public static final Relationship FAILURE = new Relationship.Builder().name("failure").
description("Errors were thrown.").build();
private Set<Relationship> relationships;
private List<PropertyDescriptors> properties;
#Override
public void init(final ProcessorInitializationContext contex) {
relationships = new HashSet<>(Arrays.asList(SUCCESS, FAILURE));
properties = new Arrays.asList(IMMEDIATE_READ);
}
#Override
public Set<Relationship> getRelationships() {
return this.relationships;
}
#Override
public List<PropertyDescriptor> getSuppprtedPropertyDescriptors() {
return this.properties;
}
#Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
FlowFile incomingFlowFile = session.get();
if (incomingFlowFile == null) {
return;
}
try {
final InfileReader inFileReader = new InfileReader();
session.read(incomingFlowFile, inFileReader);
Product product = infileReader.getProduct();
boolean transfer = false;
getLogger().info("\tSession :\n" + session);
getLogger().info("\toriginal :\n" + incomingFlowFile);
for(int i = 0; i < 2; i++) {
transfer = manipulate(context, session, inclmingFlowFile, product);
}
} catch (Exception e) {
getLogger().error(e.getMessage(), e);
session.rollback(true);
}
}
private boolean manipuate(final ProcessContext context, final ProcessSession session
final FlowFile incomingFlowFile, final Product product) {
boolean transfer = false;
FlowFile outgoingFlowFile = null;
boolean immediateRead = context.getProperty(IMMEDIATE_READ).asBoolean();
try {
//Clone incoming flowFile
outgoinFlowFile = session.clone(incomingFlowFile);
getLogger().info("\tclone outgoing :\n" + outgoingFlowFile);
if(immediateRead) {
readFlowFile(session, outgoingFlowFile);
}
//First write into clone
StageOneWrite stage1Write = new StaeOneWrite(product);
outgoingFlowFile = session.write(outgoingFlowFile, stage1Write);
getLogger().info("\twrite outgoing :\n" + outgoingFlowFile);
// Format the cloned file with another write
outgoingFlowFile = formatFlowFile(outgoingFlowFile, session)
getLogger().info("\format outgoing :\n" + outgoingFlowFile);
session.transfer(outgoingFlowFile, SUCCESS);
transfer != true;
} catch(Exception e)
getLogger().error(e.getMessage(), e);
if(outgoingFlowFile ! = null) {
session.remove(outgoingFlowFile);
}
}
return transfer;
}
private void readFlowFile(fainl ProcessSession session, fianl Flowfile flowFile) {
session.read(flowFile, new InputStreamCallback() {
#Override
public void process(Final InputStream in) throws IOException {
try (Scanner scanner = new Scanner(in)) {
scanner.useDelimiter("\\A").next();
}
}
});
}
private FlowFile formatFlowFile(fainl ProcessSession session, FlowFile flowfile) {
OutputFormatWrite formatWrite = new OutputFormatWriter();
flowfile = session.write(flowFile, formatWriter);
return flowFile;
}
private static class OutputFormatWriter implement StreamCallback {
#Override
public void process(final InputStream in, final OutputStream out) throws IOException {
try {
IOUtils.copy(in. out);
out.flush();
} finally {
IOUtils.closeQuietly(in);
IOUtils.closeQuietly(out);
}
}
}
private static class StageOneWriter implements OutputStreamCallback {
private Product product = null;
public StageOneWriter(Produt product) {
this.product = product;
}
#Override
public void process(final OutputStream out) throws IOException {
final Gson gson = new Gson();
final String json = gson.toJson(product);
out.write(json.getBytes());
}
}
private static class InfileReader implements InputStreamCallback {
private Product product = null;
public StageOneWriter(Produt product) {
this.product = product;
}
#Override
public void process(final InputStream out) throws IOException {
product = null;
final Gson gson = new Gson();
Reader inReader = new InputStreamReader(in, "UTF-8");
product = gson.fromJson(inreader, Product.calss);
}
public Product getProduct() {
return product;
}
}
SampleCloningProcessorTest.java
package sample.processors.cloning;
import org.apache.nifi.util.TestRunner;
import org.apache.nifi.util.TestRunners;
import org.junit.Before;
import org.junit.Test;
public class SampleCloningProcessorTest {
final satatic String flowFileContent = "{"
+ "\"cost\": \"cost 1\","
+ "\"description\": \"description","
+ "\"markup\": 1.2"
+ "\"name\":\"name 1\","
+ "\"supplier\":\"supplier 1\","
+ "}";
private TestRunner testRunner;
#Before
public void init() {
testRunner = TestRunner.newTestRunner(SampleCloningProcessor.class);
testRunner.enqueue(flowFileContent);
}
#Test
public void testProcessorImmediateRead() {
testRunner.setProperty(SampleCloningProcessor.IMMEDIATE_READ, "true");
testRunner.run();
testRinner.assertTransferCount("success", 2);
}
#Test
public void testProcessorImmediateRead_false() {
testRunner.setProperty(SampleCloningProcessor.IMMEDIATE_READ, "false");
testRunner.run();
testRinner.assertTransferCount("success", 2);
}
}
Product.java
package sample.processors.cloning;
public class Product {
private String name;
private String description;
private String supplier;
private String cost;
private float markup;
public String getName() {
return name;
}
public void setName(final String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescriptione(final String description) {
this.description = description;
}
public String getSupplier() {
return supplier;
}
public void setSupplier(final String supplier) {
this.supplier = supplier;
}
public String getCost() {
return cost;
}
public void setCost(final String cost) {
this.cost = cost;
}
public float getMarkup() {
return markup;
}
public void setMarkup(final float name) {
this.markup = markup;
}
}
product.json A sample input file.
{
"const" : "cost 1",
"description" : "description 1",
"markup" : 1.2,
"name" : "name 1",
"supplier" : "supplier 1"
}
Reported as a bug in Nifi. Being addressed by https://issues.apache.org/jira/browse/NIFI-5879
Does somebody implemented confluent-kafka messages deserializer to consume kafka messages by spring "#KafkaListener"-s ?
Here is my answer, which I've implemented based on: "io.confluent.kafka.serializers.AbstractKafkaAvroDeserializer"
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Map;
import javax.xml.bind.DatatypeConverter;
import org.apache.avro.Schema;
import org.apache.avro.io.DatumReader;
import org.apache.avro.io.DecoderFactory;
import org.apache.avro.specific.SpecificDatumReader;
import org.apache.avro.specific.SpecificRecordBase;
import org.apache.kafka.common.errors.SerializationException;
import org.apache.kafka.common.serialization.Deserializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AvroConfluentDeserializer<T extends SpecificRecordBase> implements Deserializer<T> {
private static final Logger LOG = LoggerFactory.getLogger(AvroConfluentDeserializer.class);
protected static final byte MAGIC_BYTE = 0x0;
protected static final int idSize = 4;
private final DecoderFactory decoderFactory = DecoderFactory.get();
protected final Class<T> targetType;
public AvroConfluentDeserializer(Class<T> targetType) {
this.targetType = targetType;
}
#Override
public void close() {
// No-op
}
#Override
public void configure(Map<String, ?> arg0, boolean arg1) {
// No-op
}
#Override
public T deserialize(String topic, byte[] data) {
try {
T result = null;
if (data != null) {
LOG.info("data='{}'", DatatypeConverter.printHexBinary(data));
result = (T) deserializePayload(data, targetType.newInstance().getSchema());
LOG.info("deserialized data='{}'", result);
}
return result;
} catch (Exception ex) {
throw new SerializationException(
"Can't deserialize data '" + Arrays.toString(data) + "' from topic '" + topic + "'", ex);
}
}
protected T deserializePayload(byte[] payload, Schema schema) throws SerializationException {
int id = -1;
try {
ByteBuffer buffer = getByteBuffer(payload);
id = buffer.getInt();
int length = buffer.limit() - 1 - idSize;
int start = buffer.position() + buffer.arrayOffset();
DatumReader<T> reader = new SpecificDatumReader<T>(schema);
return reader.read(null, decoderFactory.binaryDecoder(buffer.array(), start, length, null));
} catch (IOException | RuntimeException e) {
throw new SerializationException("Error deserializing Avro message for id " + id, e);
}
}
private ByteBuffer getByteBuffer(byte[] payload) {
ByteBuffer buffer = ByteBuffer.wrap(payload);
if (buffer.get() != MAGIC_BYTE) {
throw new SerializationException("Unknown magic byte!");
}
return buffer;
}
}
I have a problem when using asyntask to query all the data in a table and put it in an array List and then send it to the server. I am able to send the data to the server successfully. But the application crashes on the postexecute of the asynctask giving the following error:
(W/System.errīš org.json.JSONException: Value ["com.atlantis.eclectics.agentbank.SyncMembersActivity$MemberRecords#41b06d18","com.atlantis.eclectics.agentbank.SyncMembersActivity$MemberRecords#41b070b8"] of type org.json.JSONArray cannot be converted to JSONObject)..
What could be problem? Where am i getting it wrong. Someone please help...Thanks very much.
package com.practical.tasks.school;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.NotificationManager;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.HTTP;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
#SuppressWarnings("deprecation")
public class SyncMembersActivity extends ActionBarActivity {
CustomHttpClient jParser = new CustomHttpClient();
ListView lstView;
public MainDB dbs;
public SQLiteDatabase db;
public static String fname;
String username = "atlantis";
String password = "#t1#ntis";
Button submit;
String statusN = "NO";
String statusY = "YES";
String url = "http://123.456.78.90:1234/Api/create/Post";
String FirstName = "";
String SecondName = "";
String MobileNumber = "";
String DateofBirth = "";
String Gender = "";
String GroupName = "";
String GroupAccountNo = "";
String IdentificationID = "";
String IdentificationType = null;
String CreatedBy = null;
String Residence = "";
private int notificationIdOne = 111;
private int numMessagesOne = 0;
private NotificationManager myNotificationManager;
String account_statusY = "True";
private ProgressDialog prgDialog;
private ArrayAdapter<String> listAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sync_members);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeActionContentDescription("Services");
getSupportActionBar().setDisplayUseLogoEnabled(true);
getSupportActionBar().setLogo(R.mipmap.ic_launcher);
getSupportActionBar().setDisplayShowTitleEnabled(true);
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor("#5A92F7")));
lstView = (ListView) findViewById(R.id.lstSample);
submit = (Button) findViewById(R.id.upload);
prgDialog = new ProgressDialog(this);
prgDialog.setMessage("Please wait...");
prgDialog.setCancelable(false);
submit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
if (isNetworkAvailable(getApplicationContext())) {
new HttpAsyncTask().execute(FirstName, SecondName, MobileNumber, DateofBirth, Gender, GroupName, GroupAccountNo, IdentificationID, IdentificationType, CreatedBy, Residence);
} else {
showAlert("No internet Connectivity...");
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_sync_members, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public class MemberRecords {
String FirstName;
String SecondName;
String MobileNumber;
String DateofBirth;
String Gender;
String GroupName;
String GroupAccountNo;
String IdentificationID;
String IdentificationType;
String CreatedBy;
String Residence;
public String getFirstName() {
return FirstName;
}
public String getSecondName() {
return SecondName;
}
public String getMobileNumber() {
return MobileNumber;
}
public String getDateofBirth() {
return DateofBirth;
}
public String getGender() {
return Gender;
}
public String getGroupName() {
return GroupName;
}
public String getGroupAccountNo() {
return GroupAccountNo;
}
public String getIdentificationID() {
return IdentificationID;
}
public String getIdentificationType() {
return IdentificationType;
}
public String getCreatedBy() {
return CreatedBy;
}
public String getResidence() {
return Residence;
}
public void setFirstName(String newfirstName) {
FirstName = newfirstName;
}
public void setSecondName(String newSecondName) {
SecondName = newSecondName;
}
public void setMobileNumber(String mobileNumber) {
MobileNumber = mobileNumber;
}
public void setDateofBirth(String dateofBirth) {
DateofBirth = dateofBirth;
}
public void setGender(String gender) {
Gender = gender;
}
public void setGroupName(String groupName) {
GroupName = groupName;
}
public void setGroupAccountNo(String groupAccountNo) {
GroupAccountNo = groupAccountNo;
}
public void setIdentificationID(String identificationID) {
IdentificationID = identificationID;
}
public void setIdentificationType(String identificationType) {
IdentificationType = identificationType;
}
public void setCreatedBy(String createdBy) {
CreatedBy = createdBy;
}
public void setResidence(String residence) {
Residence = residence;
}
}
public boolean isConnected() {
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Activity.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
return true;
else
return false;
}
public static String POST(String url, MemberRecords my) {
InputStream inputStream;
String result = "";
String username = "atlantis";
String password = "#t1#ntis";
Integer n;
try {
// 1. create HttpClient
HttpClient httpclient = new DefaultHttpClient();
// 2. make POST request to the given URL
HttpPost httpPost = new HttpPost("http://41.186.47.26:4433/Api/Account/PostAddSignatory");
String json = "";
Log.e("Url", "Url Here:" + url);
// 3. build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate("FirstName", my.getFirstName());
jsonObject.accumulate("SecondName", my.getSecondName());
jsonObject.accumulate("MobileNumber", my.getMobileNumber());
jsonObject.accumulate("DateofBirth", my.getDateofBirth());
jsonObject.accumulate("Gender", my.getGender());
jsonObject.accumulate("GroupName", my.getGroupName());
jsonObject.accumulate("GroupAccountNo", my.getGroupAccountNo());
jsonObject.accumulate("IdentificationID", my.getIdentificationID());
jsonObject.accumulate("IdentificationType", my.getIdentificationType());
jsonObject.accumulate("CreatedBy", my.getCreatedBy());
jsonObject.accumulate("Residence", my.getResidence());
json = jsonObject.toString();
Log.e("Url", "Request:" + json);
StringEntity se = new StringEntity(json);
httpPost.setHeader(HTTP.CONTENT_TYPE, "application/json");
UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(username, password);
Header header = new BasicScheme().authenticate(credentials, httpPost);
httpPost.addHeader(header);
httpPost.setEntity(se);
HttpResponse httpResponse = httpclient.execute(httpPost);
inputStream = httpResponse.getEntity().getContent();
if (inputStream != null)
result = convertInputStreamToString(inputStream);
else
result = "Did not work!";
} catch (Exception e) {
Log.e("InputStream", e.getLocalizedMessage());
//e.printStackTrace();
}
// 11. return result
return result;
}
private static String convertInputStreamToString(InputStream inputStream) throws IOException, JSONException {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
String result = "";
while ((line = bufferedReader.readLine()) != null)
result += line;
Log.e("Url", "Response:" + result);
inputStream.close();
return result;
}
private class HttpAsyncTask extends AsyncTask<String, Void,String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
prgDialog.show();
}
#Override
protected String doInBackground(String... urls) {
dbs = new MainDB(SyncMembersActivity.this);
db = dbs.getWritableDatabase();
Integer n=null;
MemberRecords my = new MemberRecords();
List<MemberRecords> member_list = new ArrayList<>();
try {
Cursor cursor = db.rawQuery("SELECT * FROM tbl_memberData" +
" where sync_status = '" + statusN + "' AND account_status = '" + account_statusY + "'", null);
if (cursor.moveToFirst()) {
do {
my = new MemberRecords();
my.setGroupName(cursor.getString(1));
my.setIdentificationID(cursor.getString(2));
my.setIdentificationType(cursor.getString(3));
my.setFirstName(cursor.getString(4));
my.setSecondName(cursor.getString(5));
my.setDateofBirth(cursor.getString(6));
my.setMobileNumber(cursor.getString(7));
my.setGender(cursor.getString(8));
my.setGroupAccountNo(cursor.getString(9));
my.setCreatedBy(cursor.getString(10));
my.setResidence(cursor.getString(11));
member_list.add(my);
} while (cursor.moveToNext());
}
cursor.close();
} catch (NumberFormatException e) {
e.printStackTrace();
}
for ( n = 0; n < member_list.size(); n++) {
POST(url, member_list.get(n));
}
db.close();
return String.valueOf(member_list);
}
//onPostExecute displays the results of the AsyncTask.
//Response format
//Response:{"ResponseCode":"00","ResponseMsg":"Successful"}
//Response:{"ResponseCode":"01","ResponseMsg":"Failed"}
#Override
protected void onPostExecute (String result){
prgDialog.dismiss();
Toast.makeText(getBaseContext(),"Saved Successfully",Toast.LENGTH_LONG).show();
dbs = new MainDB(SyncMembersActivity.this);
db = dbs.getWritableDatabase();
String updateQuery = "Update tbl_memberData set sync_status = '" + statusY + "' where account_status='" + account_statusY + "'";
db.execSQL(updateQuery);
String success="";
String message="";
try {
JSONObject jsonBreaker = new JSONObject(result);
success = jsonBreaker.getString("ResponseCode");
message = jsonBreaker.getString("ResponseMsg");
if (success.equalsIgnoreCase("00")) {
prgDialog.dismiss();
showAlert(message);
} else if (success.equalsIgnoreCase("01")) {
prgDialog.dismiss();
//do
showAlert(message);
} else {
prgDialog.dismiss();
Toast.makeText(getBaseContext(), "Error, Please try again...", Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
private void showAlert(String message) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message).setTitle("Response from Server")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// do nothing
}
});
AlertDialog alert = builder.create();
alert.show();
}
public boolean isNetworkAvailable(final Context context) {
final ConnectivityManager connectivityManager = ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE));
return connectivityManager.getActiveNetworkInfo() != null && connectivityManager.getActiveNetworkInfo().isConnected();
}
}
If you would baste stacktrace and opoint where rxception is thrown would be much easier.
Anyway
Your result is probably and JSONArray not an JSONObject so this
JSONObject jsonBreaker = new JSONObject(result);
Is causing the exception. Construct JSONArray insteed of JSONObject and this shoult be fine (this is my blind guess cuz no viable info here)
Can anyone help with these Neo4j (1.9) errors and the RestApi using JDK 1.6 and Heroku.
The objective of the code is only to demo the functionality of using cypher and Neo4j with Java. I understand that only the RestAPI works at Heroku.
package com.example;
import java.util.List;
import org.neo4j.graphdb.Direction;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;
import org.neo4j.helpers.collection.*;
import org.neo4j.rest.graphdb.RestAPI;
import org.neo4j.rest.graphdb.RestAPIFacade;
import org.neo4j.rest.graphdb.RestGraphDatabase;
import org.neo4j.rest.graphdb.query.RestCypherQueryEngine;
import org.neo4j.rest.graphdb.util.*;
import org.springframework.stereotype.Component;
import java.util.Map;
import com.example.IDatabaseConnector;
//import org.neo4j.rest.graphdb.RestGraphDatabase;
//import org.neo4j.
#Component
//public class Neo4jDatabaseConnector implements IDatabaseConnector {
public class Neo4jDatabaseConnector implements IDatabaseConnector{
Node aNode;
Node first;
Node second;
Relationship relation;
private static GraphDatabaseService GraphDb;
private static RestAPI restAPI;
Transaction txn;
private static enum RelTypes implements RelationshipType
{
KNOWS,
USAGE
}
public void showNode( )
{
// have to add code for cypher
RestCypherQueryEngine rcqe = new RestCypherQueryEngine(restAPI);
//Then just execute your cypher statements using rcqe.query().
// int length=0;
String countNodes = "START n=node(*) RETURN count(*)";
String createNodes = "CREATE (n {name: 'Trevor Oakley'})";
rcqe.query(createNodes, null);
// QueryResult <Map<String,Object>> result = rcqe.query(countNodes, null);
//for (Map<String, Object> row:result){
// length++;
//}
//System.out.println("length="+length);
// rcqe.query(countNodes, Map<String, Object> row:result);
// rcqe.query(countNodes, Map<String,Object>:result)
// rcqe.
/* ExecutionEngine engine = new ExecutionEngine(GraphDb);
int length=-1;
try{
ExecutionResult result = engine.execute("start n=node(*) return n");
if (result == null){
length = 0;
} else
{
for (#SuppressWarnings("unused")
Map<String, Object> row:result){
length++;
}
}
} catch (NullPointerException e) {
// _log.error(e.getMessage(),e);
length=-2;
}
System.out.println("len="+length);
*/
}
public Neo4jDatabaseConnector() {
//GraphDb=new GraphDatabaseFactory().newEmbeddedDatabase(Neo4j_DBPath);
}
public int createDBRest()
{
restAPI = new RestAPIFacade(System.getenv("NEO4J_URL"),
System.getenv("NEO4J_USERNAME"),
System.getenv("NEO4J_PASSWORD"));
try{
GraphDb = new RestGraphDatabase(restAPI);
}
catch (Exception e){
return 1;
}
return 0;
}
public int createDB(String dbLoc) {
System.out.println("db loc ="+dbLoc);
int error = 0;
try{
GraphDb=new GraphDatabaseFactory().newEmbeddedDatabase(dbLoc);
//GraphDb=new GraphDatabaseFactory().newEmbeddedDatabaseBuilder(dbLoc);
System.out.println("db loc ="+dbLoc);
String stringDB = GraphDb.toString();
System.out.println("connection ="+stringDB);
}
catch (Exception e){
System.out.println("error - ");
error = 1;
}
return erro
r;
}
Problem accessing /hello. Reason:
Error reading as JSON ''
Caused by:
java.lang.RuntimeException: Error reading as JSON ''
at org.neo4j.rest.graphdb.util.JsonHelper.readJson(JsonHelper.java:57)
at org.neo4j.rest.graphdb.util.JsonHelper.jsonToSingleValue(JsonHelper.java:62)
at org.neo4j.rest.graphdb.RequestResult.toEntity(RequestResult.java:114)
at org.neo4j.rest.graphdb.RequestResult.toMap(RequestResult.java:120)
at org.neo4j.rest.graphdb.ExecutingRestRequest.toMap(ExecutingRestRequest.java:187)
at org.neo4j.rest.graphdb.ExecutingRestAPI.query(ExecutingRestAPI.java:475)
at org.neo4j.rest.graphdb.ExecutingRestAPI.query(ExecutingRestAPI.java:495)
at org.neo4j.rest.graphdb.RestAPIFacade.query(RestAPIFacade.java:233)
at org.neo4j.rest.graphdb.query.RestCypherQueryEngine.query(RestCypherQueryEngine.java:50)
at com.example.Neo4jDatabaseConnector.showNode(Neo4jDatabaseConnector.java:53)
at com.example.HelloServlet.doGet(HelloServlet.java:22)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:521)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:910)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.io.EOFException: No content to map to Object due to end of input
at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2775)
at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2718)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1863)
at org.neo4j.rest.graphdb.util.JsonHelper.readJson(JsonHelper.java:55)
... 34 more
Caused by:
java.io.EOFException: No content to map to Object due to end of input
at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2775)
at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2718)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1863)
at org.neo4j.rest.graphdb.util.JsonHelper.readJson(JsonHelper.java:55)
at org.neo4j.rest.graphdb.util.JsonHelper.jsonToSingleValue(JsonHelper.java:62)
at org.neo4j.rest.graphdb.RequestResult.toEntity(RequestResult.java:114)
at org.neo4j.rest.graphdb.RequestResult.toMap(RequestResult.java:120)
at org.neo4j.rest.graphdb.ExecutingRestRequest.toMap(ExecutingRestRequest.java:187)
at org.neo4j.rest.graphdb.ExecutingRestAPI.query(ExecutingRestAPI.java:475)
at org.neo4j.rest.graphdb.ExecutingRestAPI.query(ExecutingRestAPI.java:495)
at org.neo4j.rest.graphdb.RestAPIFacade.query(RestAPIFacade.java:233)
at org.neo4j.rest.graphdb.query.RestCypherQueryEngine.query(RestCypherQueryEngine.java:50)
at com.example.Neo4jDatabaseConnector.showNode(Neo4jDatabaseConnector.java:53)
at com.example.HelloServlet.doGet(HelloServlet.java:22)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:521)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:910)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:679)
The answer was to fill the user and password fields as shown below, in terms of the immediate error.
String neo4jURL = System.getenv("NEO4J_URL");
String user="user";
String password="password";
try{
URL url = new URL(neo4jURL);
String userInfo = url.getUserInfo();
String[] userDetails = userInfo.split(":");
user = userDetails[0];
password = userDetails[1];
} catch (MalformedURLException e) {
//
}
This problem is with oracle 10g database. Same code is working fine with MySQL Database.
My Model Class
package com.killerlinks.model;
import java.io.Serializable;
import java.sql.Blob;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.Table;
#Entity
#Table(name="links")
public class Linkform implements Serializable
{
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column(name="id")
private Long id;
#Column(name="tittle")
private String tittle;
#Column(name="xdesc")
private String desc;
#Column(name="url")
private String url;
#Column(name="category")
private String category;
#Column(name="xdate")
private String date;
#Column(name="xtime")
private String time;
#Column(name="tags")
private String tags;
#Column(name="image")
#Lob
private Blob fileData;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getTittle() {
return tittle;
}
public void setTittle(String tittle) {
this.tittle = tittle;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getTags() {
return tags;
}
public void setTags(String tags) {
this.tags = tags;
}
#Override
public String toString()
{
return "Linkform [tittle=" + tittle + ", url=" + url + ", category="+ category +", tags="+ tags +", desc="+ desc +", fileData="+fileData+" ]";
}
public Blob getFileData() {
return fileData;
}
public void setFileData(Blob fileData) {
this.fileData = fileData;
}
}
This method from my controller class which helps to keep blob object to model class.
private Linkform preparingModelBean(LinkformBean linkformbean, MultipartFile file)
{
Linkform linkform = new Linkform();
linkform.setTittle(linkformbean.getTittle());
linkform.setUrl(linkformbean.getUrl());
linkform.setCategory(linkformbean.getCategory());
linkform.setDesc(linkformbean.getDesc());
linkform.setTags(linkformbean.getTags());
Date date = new Date();
SimpleDateFormat sdate = new SimpleDateFormat("yyyy.MM.dd");
SimpleDateFormat stime = new SimpleDateFormat("HH:mm");
linkform.setDate(sdate.format(date));
linkform.setTime(stime.format(date));
try {
Blob blob = Hibernate.createBlob(file.getInputStream());
linkform.setFileData(blob);
} catch (IOException e) {
e.printStackTrace();
}
return linkform;
}
This is another method from controller class, where i am trying to read blob object
#RequestMapping(value ="/image/{id}")
public String image(#PathVariable("id")Long id, HttpServletResponse response)
{
Linkform linkform = linkformservice.getALink(id);
try {
response.setHeader("Content-Disposition", "inline;filename=\"" +linkform.getTittle()+ "\"");
OutputStream out = response.getOutputStream();
response.setContentType("image/jpeg");
IOUtils.copy(linkform.getFileData().getBinaryStream(), out);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
when i am trying to call specific image this is output i am getting
When i trigger the url from the browser http://localhost:7070/KillerLinks/image/381.htm
this is the error displayed in my console
java.sql.SQLException: Closed Connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at oracle.sql.BLOB.getDBAccess(BLOB.java:955)
at oracle.sql.BLOB.getBinaryStream(BLOB.java:229)
at org.hibernate.lob.SerializableBlob.getBinaryStream(SerializableBlob.java:39)
at com.killerlinks.controllers.CategoryController.image(CategoryController.java:63)
at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.__invoke(StandardHostValve.java:171)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
java.sql.SQLException: Closed Connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at oracle.sql.BLOB.getDBAccess(BLOB.java:955)
at oracle.sql.BLOB.getBinaryStream(BLOB.java:229)
at org.hibernate.lob.SerializableBlob.getBinaryStream(SerializableBlob.java:39)
at com.killerlinks.controllers.CategoryController.image(CategoryController.java:77)
at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.__invoke(StandardHostValve.java:171)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Hibernate: select linkform0_.id as id1_0_, linkform0_.category as category1_0_, linkform0_.xdate as xdate1_0_, linkform0_.xdesc as xdesc1_0_, linkform0_.image as image1_0_, linkform0_.tags as tags1_0_, linkform0_.xtime as xtime1_0_, linkform0_.tittle as tittle1_0_, linkform0_.url as url1_0_, linkform0_.xviews as xviews1_0_ from links linkform0_ where linkform0_.id=?
Please help me to fix the bug.
I want image to be displayed.
Thanks in advance.
I think your controller should look like this:
#RequestMapping(value ="/image/{id}")
public void image(#PathVariable("id")Long id, HttpServletResponse response)
{
Linkform linkform = linkformservice.getALink(id);
try {
response.setContentType("application/x-download");
response.setHeader("Content-Disposition", "attachment; filename=" + filename);
OutputStream out = response.getOutputStream();
response.setContentType("image/jpeg");
IOUtils.copy(linkform.getFileData().getBinaryStream(), out);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
It will send your file to direct download.
In addition you can add image file to html page
<img src="/image/5"></img>
Try this
#RequestMapping(value ="/image/{id}")
public void image(#PathVariable("id")Long id, HttpServletResponse response)
{
Linkform linkform = linkformservice.getALink(id);
InputStream image = null;
image = linkform.getFileData().getBinaryStream();
try {
OutputStream out = response.getOutputStream();
response.setContentType("image/jpeg");
int length = (int) image.available();
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
while ((length = image.read(buffer)) != -1) {
out.write(buffer, 0, length);
}
response.flushBuffer();
//image.close();
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
Is there any other piece of code invoking linkform.getFileData()? If not, do you mind modifying your code a little bit like following.
Entity Class:
#Column(name="image")
#Lob
private Byte[] fileData;
public Byte[] getFileData() {
return fileData;
}
public void setFileData(Byte[] fileData) {
this.fileData = fileData;
}
And also change your controller based on new getFileData().
I cannot guarantee that this solution would definitely solve your probleam, but it is worth giving it a go. The reason I am saying so is that the exception trace tells you code failed on opening an DB connection to load Blob data. And according to java doc, the Interface Blob is actually a logical pointer to underlying SQL Blob rather than holding real data. Since controller is out of hibernate session, it might not be able to open another connection to DB for retrieving Blob value.