I have an application which allows to add an image to a product but I don't know how to refactor it that there will be possibility to add many images to one product.
This is model:
#Entity
public class ProductEntity {
#Lob
private byte[] image;
public String getImageBase64() {
return Base64.getEncoder().encodeToString(this.image);
}
This is Controller:
#PostMapping("/add")
#Secured(ROLE_ADMIN)
public String saveProduct(ProductDTO productDTO, #RequestParam("image2") MultipartFile[] files) {
try {
if (files != null && files.length > 0) {
InputStream is = files[0].getInputStream();
byte[] buffer = new byte[is.available()];
is.read(buffer);
productDTO.setImage(buffer);
}
} catch (Exception e) {
e.printStackTrace();
}
productService.addProduct(productDTO);
return "redirect:/product/list";
}
Related
I want to upload file on remote server, currently i am only able to upload on local machine. below is my code
#PostMapping("/upload")
public UploadFileResponse uploadFile(#RequestParam("file") MultipartFile file) {
String fileName = fileStorageService.storeFile(file);
String fileDownloadUri = ServletUriComponentsBuilder.fromCurrentContextPath()
.path("/downloadFile/")
.path(fileName)
.toUriString();
return new UploadFileResponse(fileName, fileDownloadUri,file.getContentType(), file.getSize());
}
file.upload-dir=C:\\Test
Thanks in Advance!
EDIT:
1. Use case : You want to upload the file locally (i.e. where your application is running):
You create StorageService interface and an implementing class FileSystemStorageService:
#Service
public class FileSystemStorageService implements StorageService {
private final Path rootLocation;
#Autowired
public FileSystemStorageService(StorageProperties properties) {
this.rootLocation = Paths.get(properties.getLocation());
}
#Override
public void store(MultipartFile file) {
String filename = StringUtils.cleanPath(file.getOriginalFilename());
try {
if (file.isEmpty()) {
throw new StorageException("Failed to store empty file " + filename);
}
if (filename.contains("..")) {
// This is a security check
throw new StorageException(
"Cannot store file with relative path outside current directory "
+ filename);
}
try (InputStream inputStream = file.getInputStream()) {
Files.copy(inputStream, this.rootLocation.resolve(filename),
StandardCopyOption.REPLACE_EXISTING);
}
}
catch (IOException e) {
throw new StorageException("Failed to store file " + filename, e);
}
}
And the controller class:
#Controller
public class FileUploadController {
private final StorageService storageService;
#Autowired
public FileUploadController(StorageService storageService) {
this.storageService = storageService;
}
#PostMapping("/")
public String handleFileUpload(#RequestParam("file") MultipartFile file,
RedirectAttributes redirectAttributes) {
storageService.store(file);
redirectAttributes.addFlashAttribute("message",
"You successfully uploaded " + file.getOriginalFilename() + "!");
return "redirect:/";
}
You can find the whole sample under https://github.com/spring-guides/gs-uploading-files.
2. Use case : You want to upload the file to a remote server:
I recommend in this case to use SFTP.
You create a RemoteFileSystemStorageService implementing the StorageService (Already created in the first use case).
#Service
public class RemoteFileSystemStorageService implements StorageService {
#Autowired
private StorageProperties properties
final private ChannelSftp channelSftp;
#PostConstruct
public void setUpSsh(){
JSch jsch = new JSch();
Session jschSession = jsch.getSession(properties.getUsername(),
properties.getRemoteHost());
jschSession.setPassword(properties.getPassword());
jschSession.connect();
this.channelSftp = (ChannelSftp)jschSession.openChannel("sftp");
}
#Override
public void store(MultipartFile file) {
String filename = StringUtils.cleanPath(file.getOriginalFilename());
try {
if (file.isEmpty()) {
throw new StorageException("Failed to store empty file " + filename);
}
if (filename.contains("..")) {
// This is a security check
throw new StorageException(
"Cannot store file with relative path outside current directory "
+ filename);
}
try (InputStream inputStream = file.getInputStream()) {
this.channelSftp.connect();
this.channelSftp.put(inputStream, properties.getRemoteServerDirectory());
}
}
catch (IOException e) {
throw new StorageException("Failed to store file " + filename, e);
}
finally{
this.channelSftp.close();
}
}
this must be a stupid question but please help me. How can we get the image file path in camera2basic api and display the image on the other activity's imageview? I have been trying to get the "Absolutepath" of the mFile in the project but not getting anything.
As Camera2 api is relatively complex to understand for me. Please help me.
public override void OnActivityCreated(Bundle savedInstanceState)
{
base.OnActivityCreated(savedInstanceState);
mFile = new Java.IO.File(Activity.GetExternalFilesDir(null), "pic.jpg");
mCaptureCallback = new CameraCaptureListener(this);
mOnImageAvailableListener = new ImageAvailableListener(this, mFile);
}
when we press the button, it evokes takepicture(); which has lockfocus();
private void LockFocus()
{
try
{
// This is how to tell the camera to lock focus.
mPreviewRequestBuilder.Set(CaptureRequest.ControlAfTrigger, (int)ControlAFTrigger.Start);
// Tell #mCaptureCallback to wait for the lock.
mState = STATE_WAITING_LOCK;
mCaptureSession.Capture(mPreviewRequestBuilder.Build(), mCaptureCallback,
mBackgroundHandler);
}
catch (CameraAccessException e)
{
e.PrintStackTrace();
}
}
I have showCapturePhoto which is getting the image from ImageAvailableListener
using Android.Media;
using Java.IO;
using Java.Lang;
using Java.Nio;
using Android.Util;
namespace Camera2Basic.Listeners
{
public class ImageAvailableListener : Java.Lang.Object,
ImageReader.IOnImageAvailableListener
{
private readonly File file;
private Camera2BasicFragment owner;
public ImageAvailableListener(Camera2BasicFragment fragment, File
file)
{
if (fragment == null)
throw new System.ArgumentNullException("fragment");
if (file == null)
throw new System.ArgumentNullException("file");
owner = fragment;
this.file = file;
}
//public File File { get; private set; }
//public Camera2BasicFragment Owner { get; private set; }
public void OnImageAvailable(ImageReader reader)
{
owner.mBackgroundHandler.Post(new ImageSaver(reader.AcquireNextImage(), file));
}
// Saves a JPEG {#link Image} into the specified {#link File}.
private class ImageSaver : Java.Lang.Object, IRunnable
{
// The JPEG image
private Image mImage;
// The file we save the image into.
private File mFile;
public ImageSaver(Image image, File file)
{
if (image == null)
throw new System.ArgumentNullException("image");
if (file == null)
throw new System.ArgumentNullException("file");
mImage = image;
mFile = file;
}
public void Run()
{
ByteBuffer buffer = mImage.GetPlanes()[0].Buffer;
byte[] bytes = new byte[buffer.Remaining()];
buffer.Get(bytes);
using (var output = new FileOutputStream(mFile))
{
try
{
output.Write(bytes);
}
catch (IOException e)
{
e.PrintStackTrace();
}
finally
{
mImage.Close();
}
}
Camera2BasicFragment.showCapturedPhoto(mImage);
}
}
}
}
ShowcapturePhoto
public static void showCapturedPhoto(Image img)
{
ByteBuffer buffer;
byte[] bytes;
MemoryStream memStream = new MemoryStream();
buffer = img.GetPlanes()[0].Buffer;
bytes = new byte[buffer.Capacity()];
buffer.Get(bytes);
Activity activity= new Activity();
Intent showPhoto = new Intent(activity, typeof(RetryOK));
showPhoto.PutExtra("savedImg", bytes);
showPhoto.PutExtra("zoomAmount", 1.7f / 1.4f);
showPhoto.PutExtra("focusDistance", -1.0f);
activity.StartActivity(typeof(RetryOK));
}
I have dao class is below
#Override
public List<PersonDTO> getAllEmployees(long companyId) {
Query query = getCurrentSession().getNamedQuery(User.class.getName() + ".getAllEmployee");
query.setParameter("companyId", companyId);
query.setResultTransformer(Transformers.aliasToBean(PersonDTO.class));
return query.list();
}
I have services class is below
public List<PersonDTO> getAllEmployees(long companyId) {
try {
return userDAO.getAllEmployees(companyId);
} catch (Exception e) {
throw new ApplicationException(e);
}
}
I have Embedded class
public class EntityListResponce implements Serializable {
private static final long serialVersionUID = 1L;
private List<PersonDTO> personDTO;
public List<PersonDTO> getPersonDTO() {
return PersonDTO;
}
public void setPersonDTO(List<PersonDTO> employeesList) {
this.PersonDTO = employeesList;
}
}
I written a controller like below.
#RequestMapping("/getAllEntitys.htm")
public void getAllEntities(HttpServletRequest request, HttpServletResponse response) {
try {
ZSession zSession = getZSession(request);
Long companyId = zSession.getCompanyId();
EntityListResponce entityListResponce = new EntityListResponce();
List<PersonDTO> employeesList = personService.getAllEmployees(companyId);
WebUtils.writeJSONResponse(response,
getSerializer(request, EXCLUDE_FILES).deepSerialize(entityListResponce));
} catch (Exception e) {
writeException(request, response, e);
}
}
}
Is it proper way to collect all the employeesList like this
List<PersonDTO> employeesList = personService.getAllEmployees(companyId);
I am getting not getting all the employeesList in response.
I am newbee to Spring integration. i am trying to implement customer sftp filter to list the files in SFTP server. I am getting "The blank final field seen may not have been initialized" at the constructor.Can you please suggest me to get list of file names from sftp server.
I dont have any idea what went wrong in my code.
Thanks in Advance
java code
public class SFTPFileFilter extends SftpSimplePatternFileListFilter {
public SFTPFileFilter(String pattern) {
super(pattern);
// TODO Auto-generated constructor stub
}
final static Logger logger = LoggerFactory.getLogger(SFTPFileFilter.class);
private final Queue<File> seen;
private final Set<File> seenSet = new HashSet<File>();
private final Object monitor = new Object();
public static int fileCount = 0;
#Autowired
private SourcePollingChannelAdapter sftpInbondAdapter;
public List<File> filterFiles(File[] files)
{
List<File> accepted = new ArrayList<File>();
for (File file : files) {
System.out.println(file.getName());
accepted.add(file);
}
return accepted;
}
public boolean accept(File file) {
synchronized (this.monitor) {
if (this.seenSet.contains(file)) {
logger.info(file.getName()+" is already copied earlier");
return false;
}
if (this.seen != null) {
if (!this.seen.offer(file)) {
File removed = this.seen.poll();
this.seenSet.remove(removed);
this.seen.add(file);
}
}
this.seenSet.add(file);
return true;
}
}
}
private final Queue<File> seen;
You are not initializing that field in a constructor.
You can't extend it like that; simply override the method like this...
public List<File> filterFiles(File[] files) {
for (File file : files) {
System.out.println("received:" + file.getName());
}
List<File> filtered = super.filterFiles(files);
for (File file : flteredFiles) {
System.out.println("after filter:" + file.getName());
}
return filteredFiles;
}
I need to upload data into 2 database tables(factory and factoryType) using the below form but it isnt working can somebody take a look :
Factory table:factoryId,factoryname
FactoryType table: factoryType,factoryTypeId
FactoryConf table: factoryID,factoryTypeId
We are using hibernate for the database operations.
Model:
#Entity
#Table(name = "FactoryConf", uniqueConstraints = {
#UniqueConstraint(columnNames = { "factoryId" } )
})
public class FactoryConf {
#Id
long factoryId;
#OneToOne
#JoinColumn(name = "factoryId", insertable = false, updatable = false)
Factory factory;
#ManyToOne(optional = false)
#JoinColumn(name = "factoryTypeId")
FactoryType factoryType;
public FactoryConf() {
super();
}
public FactoryConf(long factoryId, FactoryType factoryType) {
super();
this.factoryType = factoryType;
this.factoryId = factoryId;
}
public Factory getFactory() {
return factory;
}
public void setFactory(Factory factory) {
this.factory = factory;
}
public FactoryType getFactoryType() {
return factoryType;
}
public void setFactoryType(FactoryType factoryType) {
this.factoryType = factoryType;
}
public long getFactoryId() {
return factoryId;
}
public void setFactoryId(long factoryId) {
this.factoryId = factoryId;
}
public FactoryType getFactoryTypeByFactoryID(long factoryId){
return factoryType;
}
}
Bean class:
/**
* This bean is defined to parse each record from the CSV file.
* All records are mapped to instances of this bean class.
*
*/
public class FactoryCSVFileInputBean {
private String upload_id;
private String file_name;
private byte file_data;
private long Id;
private String Name;
private String Type;
//getter setters
}
CSV parsing:
/**
* This class is defined for following actions
* 1. Validate the input CSV file format, header columns.
* 2. Parse the CSV file into a list of beans.
* 3. Validate input records with missing data and prepare a valid factory list to be processed. *
*/
public class FactoryCSVUtil {
private static Log log = LogFactory.getLog(FactoryCSVUtil.class);
private static final List<String> fileHeaderFields = new ArrayList<String>();
private static final String UTF8CHARSET = "UTF-8";
static{
for (Field f : FactoryCSVFileInputBean.class.getDeclaredFields()) {
fileHeaderFields.add(f.getName());
}
}
public static List<FactoryCSVFileInputBean> getCSVInputList(InputStream inputStream){
CSVReader reader = null;
List<FactoryCSVFileInputBean> csvList = null;
FactoryCSVFileInputBean inputRecord = null;
String[] header = null;
String[] row = null;
try {
reader = new CSVReader(new InputStreamReader(inputStream,UTF8CHARSET));
csvList = new ArrayList<FactoryCSVFileInputBean>();
header = reader.readNext();
boolean isEmptyLine = true;
while ((row = reader.readNext()) != null) {
isEmptyLine = true;
if(!(row.length==1 && StringUtils.isBlank(row[0]))){//not an empty line, not even containing ','
inputRecord = new FactoryCSVFileInputBean();
isEmptyLine = populateFields(inputRecord, header, row);
if(row.length != header.length)
//inputRecord.setUploadStatus("Not Loaded - Missing or invalid Data");
if(!isEmptyLine)
csvList.add(inputRecord);
}
}
} catch (IOException e) {
log.debug("IOException while accessing FactoryCSVFileInputBean: " + e);
return null;
} catch (IllegalAccessException e) {
log.debug("IllegalAccessException while accessing FactoryCSVFileInputBean: " + e);
return null;
} catch (InvocationTargetException e) {
log.debug("InvocationTargetException while copying FactoryCSVFileInputBean properties: " + e);
return null;
} catch (Exception e) {
log.debug("Exception while parsing CSV file: " + e);
return null;
}finally{
try{
if(reader!=null)
reader.close();
}catch(IOException ioe){}
}
return csvList;
}
protected static boolean populateFields(FactoryCSVFileInputBean inputRecord,String[] header, String[] row) throws IllegalAccessException, InvocationTargetException {
boolean isEmptyLine = true;
for (int i = 0; i < row.length; i++) {
String val = row[i];
if(!StringUtils.isBlank(val)){
BeanUtilsBean.getInstance().copyProperty(inputRecord, header[i], val);
isEmptyLine = false;
} else {
//inputRecord.setUploadStatus(String.format("Not Loaded - Missing or invalid Data for:%s",header[i]));
}
}
return isEmptyLine;
}
public static void validateInputFile(CommonsMultipartFile csvFile, Model model){
InputStream inputStream = null;
CSVReader reader = null;
String fileName = csvFile.getOriginalFilename();
String fileExtension = fileName.substring(fileName.lastIndexOf('.') + 1);
if(fileExtension.toUpperCase().equals("CSV")){
try{
inputStream = csvFile.getInputStream();
reader = new CSVReader(new InputStreamReader(inputStream,UTF8CHARSET));
String[] header = reader.readNext();
if(header!=null){
for (int i = 0; i < header.length; i++) {
if(!header[i].equals("") && !fileHeaderFields.contains(header[i])){
log.debug("Invalid Column found in upload file: " + header[i]);
model.addAttribute("failureMsg", "Invalid Column found in upload file: " + header[i]);
break;
}
}
for(csvHeaderFieldsEnum field : csvHeaderFieldsEnum.values()){
if(!Arrays.asList(header).contains(field.getValue())){
log.debug("Missing column in upload file: " + field.getValue());
model.addAttribute("failureMsg", "Missing column in upload file: " + field.getValue());
break;
}
}
}else{
model.addAttribute("failureMsg", "File is Empty - Please select a valid file");
}
String[] data = reader.readNext();
if(data==null){
log.debug("Empty file with header - No data found");
model.addAttribute("failureMsg", "Empty file with header - No data found");
}
}catch(IOException e){
log.debug("IOException in reading the CSV file: " + e);
model.addAttribute("failureMsg", "Exception in reading the CSV file");
}finally{
if(reader!=null)
try{
reader.close();
}catch(IOException e){ log.debug("IOException in closing reader of CSV file: " + e);}
}
}
else{
model.addAttribute("failureMsg", "Invalid file format - Please select a CSV file");
}
}
}
Model
public class FactoryUploadForm {
private CommonsMultipartFile fileData;
private String uploadComment;
/**
* #return the fileData
*/
public CommonsMultipartFile getFileData() {
return fileData;
}
/**
* #param fileData the fileData to set
*/
public void setFileData(CommonsMultipartFile fileData) {
this.fileData = fileData;
}
/**
* #return the uploadComment
*/
public String getUploadComment() {
return uploadComment;
}
/**
* #param uploadComment the uploadComment to set
*/
public void setUploadComment(String uploadComment) {
this.uploadComment = uploadComment;
}
public String toString(){
return " CSVFileName: " + getFileData().getOriginalFilename() + "; Upload Comment: " + uploadComment;
}
}
Controller
#Controller
public class FactoryUploadDownloadController {
private static final Log logger = LogFactory.getLog(FactoryUploadDownloadController.class);
#Resource
Service Service;
#Resource
FactoryUploadRepository repository;
#RequestMapping(value = "/submitUploadFactoryForm")
public String uploadFactory(FactoryUploadForm uploadform,
HttpServletRequest request, Model model, BindingResult result) {
logger.debug("====================================================================");
List<FactoryCSVFileInputBean> csvList = null;
List<FactoryType> factoryTypes = Service.getFactoryTypes();
try {
CommonsMultipartFile file = uploadform.getFileData();
// parse csv file to list
csvList = FactoryCSVUtil.getCSVInputList(file.getInputStream());
if (csvList == null) {
model.addAttribute("failureMsg","Error in file parsing - Please verify the file");
logger.debug("---------------------------------------------------------");
return "sucess";
}
} catch (Exception e) {
logger.debug("sorry this isn't working for you");
}
try {
CommonsMultipartFile file = uploadform.getFileData();
for (FactoryCSVFileInputBean inputRecord : csvList) {
Factory factoryentity = new Factory();
factoryentity.setId(inputRecord.getId());
factoryentity.setName(inputRecord.getName());
factoryentity = this.Service.saveFactory(factoryentity);
FactoryConf factoryconf = new FactoryConf();
factoryconf.setFactory(factoryentity);
factoryconf.setFactoryType(pickFactoryType(factoryTypes,inputRecord.getType()));
model.addAttribute("factoryconf", factoryconf);
this.Service.savefactoryCfg(factoryconf);
}
} catch (Exception e) {
logger.debug("sorry this isnt working for you");
}
return "success";
}
private FactoryType pickFactoryType(List<FactoryType> types, String typeName) {
for (FactoryType type : types) {
if (type.getFactoryType().equalsIgnoreCase(typeName))
return type;
}
throw new RuntimeException(String.format("Factory Type Invalid :%s", typeName));
}
}
From your question, I understand that you are not able to parse data from a CSV file. Here is sample code for similar task. I think it should help.