Spring Boot: The image is not displayed in the browser, I have a 404 error - spring-boot

Hello everyone I'm learning spring boot and well I've been following some tutorials and well I'm stuck showing the image in the browser, I've already managed to save it in the path called "user-photos" but it doesn't save inside resources but as a separate folder, when I try to show it in the browser I get a 404 error.
This is my controller that I used to save an user with the image:
#PostMapping("/users/save")
public String saveUser(User user,
RedirectAttributes redirectAttributes,
#RequestParam("image")MultipartFile multipartFile) throws IOException {
if (!multipartFile.isEmpty()) {
String fileName = StringUtils.cleanPath(multipartFile.getOriginalFilename());
user.setPhotos(fileName);
User savedUser = userService.save(user);
String uploadDir = "ShopmeWebParent/ShopmeBackEnd/user-photos/" + savedUser.getId();
FileUploadUtil.saveFile(uploadDir, fileName, multipartFile);
}
// userService.save(user);
redirectAttributes.addFlashAttribute("message", "The user has been saved successfully.");
return "redirect:/users";
}
Now I created my MVC Controller to be allowed to show images called MvcConfig:
package com.shopme.admin;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.nio.file.Path;
import java.nio.file.Paths;
#Configuration
public class MvcConfig implements WebMvcConfigurer {
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
String dirName = "user-photos";
Path userPhotosDir = Paths.get(dirName);
String userPhotosPath = userPhotosDir.toFile().getAbsolutePath();
registry.addResourceHandler("/user-photos/**")
.addResourceLocations("file:/" + userPhotosPath + "/");
}
}
Finally I created an img tag to show it with the followind code snippet:
<img th:if="${user.photos != null}" th:src="#{${user.photosImagePath}}" >

if you haven't solve it, you need to remove the in the controller "ShopmeWebParent/ShopmeBackEnd/" only leave the "user-photos + ..."

Related

How to integrate a Spring RMI server with a pure Java RMI client which is a non-spring Swing GUI?

I'm migrating a J2EE EJB application to Spring services. It's a desktop application which has a Swing GUI and to communicate to the J2EE server it uses RMI. I have created a simple spring service with spring boot which exports a service by using spring remoting, RMIServiceExporter. The client is a rich client and have a complicated architecture so i'm trying make minimum changes to it to call the spring rmi service.
So in summary I have a plain RMI client and a spring RMI server. I have learned that spring rmi abstracts pure java rmi so in my case they don't interoperate.
I will show the code below but the current error is this. Note that my current project uses "remote://". So after I have got this error I have also tried "rmi://". But, in both cases it gives this error.
javax.naming.CommunicationException: Failed to connect to any server. Servers tried: [rmi://yyy:1099 (No connection provider for URI scheme "rmi" is installed)]
at org.jboss.naming.remote.client.HaRemoteNamingStore.failOverSequence(HaRemoteNamingStore.java:244)
at org.jboss.naming.remote.client.HaRemoteNamingStore.namingStore(HaRemoteNamingStore.java:149)
at org.jboss.naming.remote.client.HaRemoteNamingStore.namingOperation(HaRemoteNamingStore.java:130)
at org.jboss.naming.remote.client.HaRemoteNamingStore.lookup(HaRemoteNamingStore.java:272)
at org.jboss.naming.remote.client.RemoteContext.lookupInternal(RemoteContext.java:104)
at org.jboss.naming.remote.client.RemoteContext.lookup(RemoteContext.java:93)
at org.jboss.naming.remote.client.RemoteContext.lookup(RemoteContext.java:146)
at javax.naming.InitialContext.lookup(InitialContext.java:417)
at com.xxx.ui.common.communication.JbossRemotingInvocationFactory.getRemoteObject(JbossRemotingInvocationFactory.java:63)
at com.xxx.gui.comm.CommManager.initializeSpringEJBz(CommManager.java:806)
at com.xxx.gui.comm.CommManager.initializeEJBz(CommManager.java:816)
at com.xxx.gui.comm.CommManager.initializeAndLogin(CommManager.java:373)
at com.xxx.gui.comm.CommManager$2.doInBackground(CommManager.java:273)
at javax.swing.SwingWorker$1.call(SwingWorker.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at javax.swing.SwingWorker.run(SwingWorker.java:334)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I have searched for how we can interoperate spring rmi and plain/pure java rmi and i read several answers from similar questions at stackoverflow and web but i couldn't find anything useful or fits my case because even the best matched answer says only that it doesn't interoperate.
I thought that maybe i need to turn my swing gui client to spring by using spring boot but i couldn't be sure about application context since i don't want to break existing client code. So i have looked for maybe there is something like partial spring context so that maybe i can put only my CommManager.java client code to it and spring only manages this file.
And then I thought that maybe I need to change my RMI server to force spring to create some kind of plain/pure Java RMI instead of default spring RMI thing. I say thing because I read something about spring rmi that explains it's an abstraction over rmi and we can force it to create standard RMI stub.
While I'm searching for a solution i have encountered the Spring Integration but I couldn't understand it really since it looks like an other abstraction but it also tell something about adapters. Since I have seen "adapter" maybe it is used for this kind of integration/legacy code migration cases. But I couldn't go further.
Client Side:
CommManager.java
private boolean initializeEJBz(String userName, String password) throws Exception {
...
ri = RemoteInvocationFactory.getRemoteInvocation(user, pass);
if (ri != null) {
return initializeEJBz(ri);
} else {
return false;
}
}
RemoteInvocationFactory.java
package com.xxx.ui.common.communication;
import javax.naming.NamingException;
public final class RemoteInvocationFactory {
private static final CommunicationProperties cp = new CommunicationProperties();
public static synchronized RemoteInvocation getRemoteInvocation(
byte[] userName, byte[] password) throws NamingException {
String url = System.getProperty("rmi://xxx.com:1099");
if (url != null) {
return new JbossRemotingInvocationFactory(userName, password, url);
}
return null;
}
...
JbossRemotingInvocationFactory.java
package com.xxx.ui.common.communication;
...
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
...
import java.util.Hashtable;
import java.util.concurrent.TimeUnit;
public class JbossRemotingInvocationFactory implements RemoteInvocation {
private final byte[] userName, password;
private final String providerURL;
private volatile InitialContext initialContext;
private final SecretKey secretKey;
private static final String SSL_ENABLED = "jboss.naming.client.connect.options.org.xnio.Options.SSL_ENABLED";
private static final String SSL_STARTTLS = "jboss.naming.client.connect.options.org.xnio.Options.SSL_STARTTLS";
private static final String TIMEOUT = "jboss.naming.client.connect.timeout";
private long timeoutValue;
private final boolean startSsl;
#SuppressWarnings("unchecked")
public JbossRemotingInvocationFactory(byte[] userName, byte[] password, String providerURL) {
try {
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
keyGenerator.init(128);
secretKey = keyGenerator.generateKey();
this.providerURL = providerURL;
startSsl = Boolean.valueOf(System.getProperty(SSL_ENABLED));
String property = System.getProperty("myproject.connect.timeout");
if (property != null) {
try {
timeoutValue = TimeUnit.MILLISECONDS.convert(Long.parseLong(property), TimeUnit.SECONDS);
} catch (Exception e) {
timeoutValue = TimeUnit.MILLISECONDS.convert(10, TimeUnit.SECONDS);
}
}
Hashtable jndiProperties = new Hashtable();
this.userName = encrypt(userName);
addOptions(jndiProperties);
jndiProperties.put(Context.SECURITY_CREDENTIALS, new String(password, UTF_8));
initialContext = new InitialContext(jndiProperties);
this.password = encrypt(password);
} catch (NamingException | NoSuchAlgorithmException ne) {
throw new RuntimeException(ne);
}
}
#Override
#SuppressWarnings("unchecked")
public <T> T getRemoteObject(Class<T> object, String jndiName) throws NamingException {
if (initialContext != null) {
T value = (T) initialContext.lookup(jndiName);
initialContext.removeFromEnvironment(Context.SECURITY_CREDENTIALS);
initialContext.removeFromEnvironment(Context.SECURITY_PRINCIPAL);
return value;
} else {
throw new IllegalStateException();
}
}
#Override
public <T> T getRemoteObject(Class<T> object) throws NamingException {
throw new IllegalAccessError();
}
...
private void addOptions(Hashtable jndiProperties) {
jndiProperties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
jndiProperties.put("jboss.naming.client.ejb.context", "true");
jndiProperties.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS", "false");
jndiProperties.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT", "false");
jndiProperties.put(SSL_STARTTLS, "false");
jndiProperties.put(TIMEOUT, Long.toString(timeoutValue));
if (startSsl) {
jndiProperties.put("jboss.naming.client.remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED", "true");
jndiProperties.put(SSL_ENABLED, "true");
}
jndiProperties.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_DISALLOWED_MECHANISMS", "JBOSS-LOCAL-USER");
jndiProperties.put(Context.PROVIDER_URL, providerURL);
jndiProperties.put(Context.SECURITY_PRINCIPAL, new String(decrypt(userName), UTF_8));
}
#Override
public void reconnect() {
try {
Hashtable jndiProperties = new Hashtable();
addOptions(jndiProperties);
jndiProperties.put(Context.SECURITY_CREDENTIALS, new String(decrypt(password), UTF_8));
initialContext = new InitialContext(jndiProperties);
} catch (NamingException ignore) {
}
}
}
CommManager.java
private boolean initializeEJBz(RemoteInvocation remoteInvocation) throws Exception {
cs = remoteInvocation.getRemoteObject(CustomerService.class, JNDINames.CUSTOMER_SERVICE_REMOTE);
...
// here is the integration point. try to get RMI service exported.
myService = remoteInvocation.getRemoteObject(HelloWorldRMI.class, JNDINames.HELLO_WORLD_REMOTE);
return true;
}
public static final String CUSTOMER_SERVICE_REMOTE = getRemoteBean("CustomerServiceBean", CustomerService.class.getName());
public static final string HELLO_WORLD_REMOTE = getRemoteBean("HelloWorldRMI", HelloWorldRMI.class.getName());
...
private static final String APPLICATION_NAME = "XXX";
private static final String MODULE_NAME = "YYYY";
...
protected static String getRemoteBean(String beanName, String interfaceName) {
return String.format("%s/%s/%s!%s", APPLICATION_NAME, MODULE_NAME, beanName, interfaceName);
}
Server Side:
HelloWorldRMI.java:
package com.example.springrmiserver.service;
public interface HelloWorldRMI {
public String sayHelloRmi(String msg);
}
HelloWorldRMIImpl:
package com.example.springrmiserver.service;
import java.util.Date;
public class HelloWorldRMIimpl implements HelloWorldRMI {
#Override
public String sayHelloRmi(String msg) {
System.out.println("================Server Side ========================");
System.out.println("Inside Rmi IMPL - Incoming msg : " + msg);
return "Hello " + msg + " :: Response time - > " + new Date();
}
}
Config.java:
package com.example.springrmiserver;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.remoting.rmi.RmiServiceExporter;
import org.springframework.remoting.support.RemoteExporter;
import com.example.springrmiserver.service.HelloWorldRMI;
import com.example.springrmiserver.service.HelloWorldRMIimpl;
#Configuration
public class Config {
#Bean
RemoteExporter registerRMIExporter() {
RmiServiceExporter exporter = new RmiServiceExporter();
exporter.setServiceName("helloworldrmi");
//exporter.setRegistryPort(1190);
exporter.setServiceInterface(HelloWorldRMI.class);
exporter.setService(new HelloWorldRMIimpl());
return exporter;
}
}
SpringServerApplication.java:
package com.example.springrmiserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.util.Collections;
#SpringBootApplication
public class SpringRmiServerApplication {
public static void main(String[] args)
{
//SpringApplication.run(SpringRmiServerApplication.class, args);
SpringApplication app = new SpringApplication(SpringRmiServerApplication.class);
app.setDefaultProperties(Collections.singletonMap("server.port", "8084"));
app.run(args);
}
}
So, my problem is how to interoperate pure/plain/standard java rmi client which is in a swing GUI with spring rmi server?
Edit #1:
By the way if you can provide further explanations or links about internal details of spring RMI stub creation and why they don't interoperate i will be happy. Thanks indeed.
And also, if you look at my getRemoteBean method which is from legacy code, how does this lookup string works? I mean where does rmi registry file or something resides at server or is this the default format or can i customize it?
Edit #2:
I have also tried this kind of lookup in the client:
private void initializeSpringEJBz(RemoteInvocation remoteInvocation) throws Exception {
HelloWorldRMI helloWorldService = (HelloWorldRMI) Naming.lookup("rmi://xxx:1099/helloworldrmi");
System.out.println("Output" + helloWorldService.sayHelloRmi("hello "));
//hw = remoteInvocation.getRemoteObject(HelloWorldRMI.class, "helloworldrmi");
}
Edit #3:
While I'm searching i found that someone in a spring forum suggested that to force spring to create plain java rmi stub we have to make some changes on the server side so i have tried this:
import java.rmi.server.RemoteObject;
public interface HelloWorldRMI extends **Remote** {
public String sayHelloRmi(String msg) throws **RemoteException**;
...
}
...
public class HelloWorldRMIimpl extends **RemoteObject** implements HelloWorldRMI {
...
}
Is the code above on the right path to solve the problem?
Beside that the first problem is the connection setup as you can see in the beginning of the question. Why i'm getting this error? What is the difference between "rmi://" and "remote://" ?
While I was trying to figure out, I could be able to find a solution. It's true that Spring RMI and Java RMI do not interoperate but currently i don't have enough knowledge to explain its cause. I couldn't find any complete explanation about internals of this mismatch yet.
The solution is using plain Java RMI in Spring backend by using java.rmi.*(Remote, RemoteException and server.UnicastRemoteObject).
java.rmi.server.UnicastRemoteObject is used for exporting a remote object with Java Remote Method Protocol (JRMP) and obtaining a stub that communicates to the remote object.
Edit:
I think this post is closely related to this interoperability issue: Java Spring RMI Activation
Spring doesn't support RMI activation. Spring includes an RmiServiceExporter for calling remote objects that contains nice improvements over standard RMI, such as not requiring that services extend java.rmi.Remote.
Solution:
This is the interface that server exports:
package com.xxx.ejb.interf;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface HelloWorldRMI extends Remote {
public String sayHelloRmi(String msg) throws RemoteException;
}
and this is the implementation of exported class:
package com.xxx.proxyserver.service;
import com.xxx.ejb.interf.HelloWorldRMI;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.Date;
public class HelloWorldRMIimpl extends UnicastRemoteObject implements HelloWorldRMI {
public HelloWorldRMIimpl() throws RemoteException{
super();
}
#Override
public String sayHelloRmi(String msg) {
System.out.println("================Server Side ========================");
System.out.println("Inside Rmi IMPL - Incoming msg : " + msg);
return "Hello " + msg + " :: Response time - > " + new Date();
}
}
and the RMI Registry is:
package com.xxx.proxyserver;
import com.xxx.proxyserver.service.CustomerServiceImpl;
import com.xxx.proxyserver.service.HelloWorldRMIimpl;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.util.Collections;
#SpringBootApplication
public class ProxyServerApplication {
public static void main(String[] args) throws Exception
{
Registry registry = LocateRegistry.createRegistry(1200); // this line of code automatic creates a new RMI-Registry. Existing one can be also reused.
System.out.println("Registry created !");
registry.rebind("just_an_alias",new HelloWorldRMIimpl());
registry.rebind("path/to/service_as_registry_key/CustomerService", new CustomerServiceImpl());
SpringApplication app = new SpringApplication(ProxyServerApplication.class);
app.setDefaultProperties(Collections.singletonMap("server.port", "8084")); // Service port
app.run(args);
}
}
Client:
...
HelloWorldRMI helloWorldService = (HelloWorldRMI)Naming.lookup("rmi://st-spotfixapp1:1200/just_an_alias");
System.out.println("Output" + helloWorldService.sayHelloRmi("hello from client ... "));
...

BDD Jbehave stories while executing results in Pending

Recently I started working on BDD using JBehave.
So far if I run using maven, my maven project is getting successfully build. And then its coming into the story file but then its not proceeding further.
I tried by running with junit but I am getting the same result..
I think my problem is with executor file.
I searched in many sites and even Jbehave.org and many stackoverflow queries..But in vain
Help me to come out of this problem...Let me know if you need any additional information
I spent so much time rectifying this.But couldn't able to find the solution.
Here is my runner file..
package runnerFile;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jbehave.core.configuration.Configuration;
import org.jbehave.core.configuration.MostUsefulConfiguration;
import org.jbehave.core.io.CodeLocations;
import org.jbehave.core.io.LoadFromClasspath;
import org.jbehave.core.io.StoryFinder;
import org.jbehave.core.junit.JUnitStories;
import org.jbehave.core.junit.JUnitStory;
import org.jbehave.core.reporters.Format;
import org.jbehave.core.reporters.StoryReporterBuilder;
import org.jbehave.core.steps.InjectableStepsFactory;
import org.jbehave.core.steps.InstanceStepsFactory;
import org.jbehave.core.steps.ScanningStepsFactory;
import org.jbehave.core.steps.Steps;
public class TestRunner extends JUnitStories{
#Override
public Configuration configuration() {
return new MostUsefulConfiguration()
.useStoryLoader(
new LoadFromClasspath(this.getClass().getClassLoader()))
.useStoryReporterBuilder(
new StoryReporterBuilder()
.withDefaultFormats()
.withFormats(Format.HTML, Format.CONSOLE)
.withRelativeDirectory("jbehave-report")
);
}
#Override
public InjectableStepsFactory stepsFactory() {
// ArrayList<Object> stepFileList = new ArrayList<Object>();
ArrayList<Steps> stepFileList = new ArrayList<Steps>();
stepFileList.add(new Steps(configuration()));
return new InstanceStepsFactory(configuration(), stepFileList);
//return new ScanningStepsFactory(configuration(), "org.jbehave.examples.core.steps", "my.other.steps"`enter code here` ).matchingNames(".*Steps").notMatchingNames(".*SkipSteps");
}
#Override
protected List<String> storyPaths() {
return new StoryFinder().
findPaths(CodeLocations.codeLocationFromClass(
this.getClass()),
Arrays.asList("**/TC_2.story"),
Arrays.asList(""));
}
}
I kept my story file inside src/test/resources . and step definition inside src/test/java
****story:****
**src/test/resources**
Narrative:
In order to communicate effectively to the business some functionality
As a development team
I want to use Behaviour-Driven Development
Scenario: A scenario is a collection of executable steps of different type
Given I launch the url
When I login with username <Username> and password <Password>
Then I should see the homepage
Examples:
|Username|Password|
|test#gmail.com|test1234|
**stepDefinition**
**src/test/java:**
package definition;
import org.jbehave.core.annotations.Given;
import org.jbehave.core.annotations.Named;
import org.jbehave.core.annotations.Then;
import org.jbehave.core.annotations.When;
import pages.Homepage_Pages;
public class HomePage {
Homepage_Pages home;
#Given("I launch the url")
public void url()
{
home.launchUrl();
}
#When("I login with username <Username> and password <Password>")
public void login(#Named("Username") String Username, #Named("Password") String Password)
{
System.out.println(Username);
}
#Then("I should see the homepage")
public void homePageVerification()
{
System.out.println("Heello");
}
}
Maven Console:
Try the following code, which is a stripped-down simple testrunner that does nothing fancy, but simply runs all stories found in sub-folders of the main folder, and includes all step classes in the define steps files location. My original had a lot of those things hard-coded but I changed them to final Strings so it should be easy enough to replace your situation and run with this file. Obviously, change "com.yourpackage.steps" with whatever package folder you place your steps files in. Hope this helps.
package testrunner;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.jbehave.core.configuration.Configuration;
import org.jbehave.core.configuration.MostUsefulConfiguration;
import org.jbehave.core.embedder.EmbedderControls;
import org.jbehave.core.io.CodeLocations;
import org.jbehave.core.io.StoryFinder;
import org.jbehave.core.junit.JUnitStories;
import org.jbehave.core.reporters.CrossReference;
import org.jbehave.core.reporters.Format;
import org.jbehave.core.reporters.StoryReporterBuilder;
import org.jbehave.core.steps.InjectableStepsFactory;
import org.jbehave.core.steps.InstanceStepsFactory;
import org.junit.runner.RunWith;
import de.codecentric.jbehave.junit.monitoring.JUnitReportingRunner;
#RunWith(JUnitReportingRunner.class)
public class TestRunner extends JUnitStories {
private Configuration configuration;
public TestRunner() {
super();
CrossReference crossReference = new CrossReference();
configuration = new MostUsefulConfiguration();
configuration.useStoryReporterBuilder(
new StoryReporterBuilder().withFormats(Format.HTML, Format.STATS, Format.CONSOLE)
.withCodeLocation(CodeLocations.codeLocationFromPath("target/."))
.withCrossReference(crossReference));
EmbedderControls embedderControls = configuredEmbedder().embedderControls();
embedderControls.doBatch(false);
embedderControls.doGenerateViewAfterStories(true);
embedderControls.doSkip(false);
embedderControls.doVerboseFailures(true);
embedderControls.doVerboseFiltering(true);
embedderControls.useThreads(1);
embedderControls.useStoryTimeouts("1800");
}
#Override
protected List<String> storyPaths()
{
return new StoryFinder().findPaths(CodeLocations.codeLocationFromClass(this.getClass()), "**/*.story", "");
}
#Override
public Configuration configuration() {
return configuration;
}
#Override
public InjectableStepsFactory stepsFactory() {
final String stepsPackage = "com.yourpackage.steps";
final String stepsLoc = "src/test/java/" + stepsPackage.replace(".", "/");
List<Object> stepList = new ArrayList<Object>();
File steps = new File(stepsLoc);
File[] fileList = steps.listFiles();
int size = fileList.length;
for (int i = 0; i < size; i++) {
if (fileList[i].isFile()) { // also returns folders (directories)
String value = fileList[i].getName().replace(".java", ""); // strip extensions
if (!value.toLowerCase().contains("testrunner")) { // ignore testrunner itself
try {
Object stepObject = Class.forName((stepsPackage + "." + value)).newInstance();
stepList.add(stepObject);
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
}
return new InstanceStepsFactory(configuration(), stepList);
}
}

Spring UTF-8 replace chars "ě", "č", "ř" to "?"

I have problems with UTF-8 encoding.
I have a Spring-Boot REST Server. When I perform a PUT request to save an article and there are special characters in the content (like "ě", "č" or "ř") they will be replace by "?" characters. But if I edit an article using phpmyadmin and perform a GET request it returns "ě", "č" and "ř" correctly.
package cz.flay.fellcms.http;
import cz.flay.fellcms.dao.ArticlesRepository;
import cz.flay.fellcms.entities.Article;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;
#CrossOrigin
#RestController
#RequestMapping(path = "/api/articles", produces = "application/json;charset=UTF-8")
public class ArticleRestController {
#Autowired
private ArticlesRepository articlesRepository;
#CrossOrigin
#GetMapping(path = "/all")
public #ResponseBody Iterable<Article> getAll(){
return articlesRepository.getAll();
}
#CrossOrigin
#GetMapping(path = "/newest")
public #ResponseBody Iterable<Article> getNewest(){
return articlesRepository.getNewest();
}
#CrossOrigin
#PutMapping(path = "/save")
public #ResponseBody HttpStatus saveArticle(#RequestBody Article article) {
articlesRepository.save(article);
return HttpStatus.OK;
}
#CrossOrigin
#GetMapping(path = "/get")
public #ResponseBody Article getArticle(#RequestParam int id) {
return articlesRepository.findOne(id);
}
}
I tried to log an article out to the console. Then the special charactes are displayed correctly.
I tried a lot of things that I found in other discussions but nothing helped me.
Thanks for any help !
The way it worked for me was to enter the following in the mysql configuration file (my.cnf)
[mysql]
default-character-set=utf8
[mysqld]
character-set-server=utf8
The mysql configuration file is usually in /etc/mysql/my.cnf in linux (I tried it in Ubuntu 14.04). If it doesn't exist there you can create the file using sudo touch /etc/mysql/my.cnf; then edit the file.
Edit:
For Win Users: File is located in /mysql/bin/my.ini
Try this in your properties file;
spring.datasource.url = jdbc:mysql://localhost:3306/db_name?useUnicode=yes&characterEncoding=UTF-8

I update avatar image and display it but the avatar does not change in Spring Boot , why?

I use Spring boot to develop a website.I develop a function of uploading avatar image , when I update avatar image and display it but the avatar does not change and the image already has changed in the folder, why?
The problem is http cache?
my simple project:
dropbox link to my project
(note: you need to change the local path in TestingController)
You are not able to see the uploaded picture instantly because you save the image in the static files of your application. You are able to see the the saved image in your folder but not if you call your url. If you refresh your running project after uploading the file (project root and hit F5) you should be able to see it.
But the better solution would be that you have a #RequestMapping to load the picture and show it in browser.
Build on your project, try to use it like this:
import java.io.IOException;
import java.net.MalformedURLException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.stream.Stream;
import org.json.JSONObject;
import org.springframework.core.io.Resource;
import org.springframework.core.io.UrlResource;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
#Controller
public class TestingController {
private final Path p = Paths.get("/Users/devin/Documents/workspace-sts-3.8.1.RELEASE/testing/src/main/resources/static/uploads/images");
#RequestMapping(value={ "/", "/home"})
public String home(){
return "home";
}
#RequestMapping(value = "/post_upload_avatar_file", method = RequestMethod.POST)
#ResponseBody
public Object uploadAvatarFile(#RequestParam("uploadfile") MultipartFile uploadfile) {
JSONObject resJsonData=new JSONObject();
try {
if(uploadfile.isEmpty()){
System.out.println("Empty");
}
Files.copy(uploadfile.getInputStream(), p.resolve(uploadfile.getOriginalFilename()));
resJsonData.put("status", 200);
resJsonData.put("message", "Success!");
resJsonData.put("data", uploadfile.getOriginalFilename());
}catch (Exception e) {
System.out.println(e.getMessage());
resJsonData.put("status", 400);
resJsonData.put("message", "Upload Image Error!");
resJsonData.put("data", "");
}
return resJsonData.toString();
}
#GetMapping("files/{filename:.+}")
#ResponseBody
public ResponseEntity<Resource> serverFile(#PathVariable String filename){
Resource file = loadAsResource(filename);
return ResponseEntity
.ok()
.body(file);
}
public Resource loadAsResource(String filename) {
try {
Path file = p.resolve(filename);
Resource resource = new UrlResource(file.toUri());
if(resource.exists() || resource.isReadable()) {
return resource;
}
else {
System.out.println("no file");
}
} catch (MalformedURLException e) {
System.out.println(e);
}
return null;
}
public Stream<Path> loadAll() {
try {
return Files.walk(p, 1)
.filter(path -> !path.equals(p))
.map(path -> p.relativize(path));
} catch (IOException e) {
System.out.println(e);
}
return null;
}
}
In this code I dont implement exception and error handling.
You can upload your picture like it was. And then you can call another url to receive the picture in your browser.
http://localhost:8080/files/testing.png
And the picture should be the response.
Please have a look to those two sources for a complete solution.
Spring file upload - backend
Spring file upload - frontend

Exception in Flying Saucer when processing images for custom UserAgentCallback

I've setup a test environment for Flying Saucer R8, and is testing building PDF's from templates and data. I'm using a custom UserAgentCallback to read external js/css and images locally from filesystem. The problem occured when introducing the following custom UserAgentCallback:
package support;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import org.xhtmlrenderer.swing.NaiveUserAgent;
public class FileUserAgent extends NaiveUserAgent {
#Override
public String resolveURI(String uri) {
URL url = null;
String path = null;
try {
url = new URL(uri);
path = url.getPath();
} catch (MalformedURLException e) {
// only path present
path = uri;
}
if (path.charAt(0) == '/') {
path = path.substring(1, path.length());
}
return path;
}
#Override
protected InputStream resolveAndOpenStream(String filepath) {
InputStream is = null;
try {
File file = new File(filepath);
is = new FileInputStream(file);
} catch (Exception e) {
System.out.print("an error occured when reading resource: " + e.getMessage());
}
return is;
}
}
The UserAgentCallback is able to read CSS without any problem, but when reading images either from src or background-image property i get the followng exception:
java.lang.ClassCastException: org.xhtmlrenderer.swing.AWTFSImage$OldAWTFSImage cannot be cast to org.xhtmlrenderer.pdf.ITextFSImage
at org.xhtmlrenderer.pdf.ITextOutputDevice.drawImage(ITextOutputDevice.java:761)
at org.xhtmlrenderer.render.AbstractOutputDevice.paintTiles(AbstractOutputDevice.java:300)
at org.xhtmlrenderer.render.AbstractOutputDevice.paintBackground0(AbstractOutputDevice.java:245)
at org.xhtmlrenderer.render.AbstractOutputDevice.paintBackground(AbstractOutputDevice.java:191)
at org.xhtmlrenderer.pdf.ITextOutputDevice.paintBackground(ITextOutputDevice.java:187)
at org.xhtmlrenderer.render.Box.paintBackground(Box.java:436)
at org.xhtmlrenderer.layout.Layer.paintBackgroundsAndBorders(Layer.java:243)
at org.xhtmlrenderer.layout.Layer.paint(Layer.java:329)
at org.xhtmlrenderer.pdf.ITextRenderer.paintPage(ITextRenderer.java:384)
at org.xhtmlrenderer.pdf.ITextRenderer.writePDF(ITextRenderer.java:348)
at org.xhtmlrenderer.pdf.ITextRenderer.createPDF(ITextRenderer.java:315)
at org.xhtmlrenderer.pdf.ITextRenderer.createPDF(ITextRenderer.java:246)
from what i read in the flying-saucer forum you have to make sure to return the right ImageResource!
what helped for me was extending the class with ITextUserAgent instead of NaiveUserAgent. (ITextUserAgent extends NaiveUserAgent).

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