Créer des Services Web Rest pour recevoir une Image

Exemple de Services Web REST Java de la Classe pour Recevoir de l'Image

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import com.sun.jersey.core.header.FormDataContentDisposition;
import com.sun.jersey.multipart.FormDataParam;
import com.sun.org.apache.xml.internal.security.exceptions.Base64DecodingException;
import com.sun.org.apache.xml.internal.security.utils.Base64;
@Path("/upload")
public class Upload_Documents {
private static final String UPLOAD_FOLDER = "c:/uploadedFiles/";
@Context
private UriInfo context;
/**
* Returns text response to caller containing uploaded file location
* 
* @return error response in case of missing parameters an internal
*         exception or success response if file has been stored
*         successfully
*/
@POST
@Path("/pic")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(
@FormDataParam("file") InputStream uploadedInputStream,
@FormDataParam("file") FormDataContentDisposition fileDetail) {
System.out.println("Called Upload Image");
//check if all form parameters are provided
if (uploadedInputStream == null || fileDetail == null)
return Response.status(400).entity("Invalid form data").build();
//create our destination folder, if it not exists
try {
createFolderIfNotExists(UPLOAD_FOLDER);
} catch (SecurityException se) {
return Response.status(500)
.entity("Can not create destination folder on server")
.build();
}
String uploadedFileLocation = UPLOAD_FOLDER + fileDetail.getFileName();
try {
saveToFile(uploadedInputStream, uploadedFileLocation);
} catch (IOException e) {
return Response.status(500).entity("Can not save file").build();
}
return Response.status(200)
.entity("File saved to " + uploadedFileLocation).build();
}
/**
* Utility method to save InputStream data to target location/file
* 
* @param inStream
*            - InputStream to be saved
* @param target
*            - full path to destination file
*/
private void saveToFile(InputStream inStream, String target)
throws IOException {
OutputStream out = null;
int read = 0;
byte[] bytes = new byte[1024];
out = new FileOutputStream(new File(target));
while ((read = inStream.read(bytes)) != -1) {
out.write(bytes, 0, read);
}
out.flush();
out.close();
}
/**
* Creates a folder to desired location if it not already exists
* 
* @param dirName
*            - full path to the folder
* @throws SecurityException
*             - in case you don't have permission to create the folder
*/
private void createFolderIfNotExists(String dirName)
throws SecurityException {
File theDir = new File(dirName);
if (!theDir.exists()) {
theDir.mkdir();
}
}
}

OriginalL'auteur Mallikarjuna