Java : InputStream to Multi-part file conversion, result file is empty - java

I am working on a Java application in which I am trying to create a Multipart file out of downloaded InputStream. Unfortunately, it is not working and the Multipart file is empty. I checked the size of savedFile on disk before copying it to Multipart, and it has correct size, attributes, content.
What am I doing wrong in the conversion, there is no stacktrace, as I am catching it.
Code :
// InputStream contains file data.
byte[] bytes = IOUtils.toByteArray(inputStream);
File file = new File(msg + "temp");
if (file.exists() && file.isDirectory()) {
OutputStream outputStream = new FileOutputStream(new File(msg + "temp" + "/" +
groupAttachments.getFileName()));
outputStream.write(bytes);
outputStream.close();
}
java.io.File savedFile = new java.io.File(msg + "temp" + "/" +
groupAttachments.getFileName());
DiskFileItem fileItem = new DiskFileItem("file", "text/plain", false,
savedFile.getName(), (int) savedFile.length(), savedFile.getParentFile());
fileItem.getOutputStream();
MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
System.out.println("Saved file size is "+savedFile.length());
if (multipartFile.isEmpty()) {
System.out.println("Dropbox uploaded multipart file is empty");
} else {
System.out.println("Multipart file is not empty.");
}
this.dropboxTask.insertFile(multipartFile, "",
savedPersonalNoteObject.getNoteid(), (long) 0, true);
Path path = Paths.get(msg + "temp" + "/" + groupAttachments.getFileName());
Console output :
Multipart file is not empty
Bytes are not null
File path is /My Group
Input stream is not null
Saved file size is 4765
Dropbox uploaded multipart file is empty
Multipart file is empty
Bytes are not null
What am I doing wrong in the conversion? Any help would be nice. Thanks a lot.

The DiskFileItem uses a DeferredFileOutputStream which uses an in-memory byte-array that is only filled when bytes are actually transferred.
Since files are used directly and no bytes are actually copied,
the byte-array is never filled. See for yourself in the source code:
Source code CommonsMultipartFile
Source code DiskFileItem
Source code DeferredFileOutputStream
So, instead of just calling fileItem.getOutputStream();, transfer the bytes to fill the in-memory byte-array:
try (OutputStream out = fileItem.getOutputStream();
InputStream in = Files.newInputStream(file.toPath())) {
IOUtils.copy(in, dfos);
}
and then the tranferTo call will work.
This appears to be a bit cumbersome for just moving a file: CommonsMultipartFile only calls fileItem.write((File)dest) in the transferTo method.
Below are two test cases, one using the DiskFileItem and one using the LocalFileItem. The code for LocalFileItem is shown further below.
I used dependencies org.springframework:spring-web:4.2.2.RELEASE, commons-fileupload:commons-fileupload:1.3.1 and junit:junit:4.12
Test class CommonMp:
import static org.junit.Assert.*;
import java.io.*;
import java.nio.charset.*;
import java.nio.file.*;
import org.apache.commons.fileupload.disk.DiskFileItem;
import org.apache.commons.io.IOUtils;
import org.junit.Test;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
public class CommonMp {
private final Charset CS = StandardCharsets.UTF_8;
#Test
public void testLocalMp() {
Path testInputFile = null, testOutputFile = null;
try {
testInputFile = prepareInputFile();
LocalFileItem lfi = new LocalFileItem(testInputFile);
CommonsMultipartFile cmf = new CommonsMultipartFile(lfi);
System.out.println("Empty: " + cmf.isEmpty());
testOutputFile = testInputFile.getParent().resolve("testMpOutput.txt");
cmf.transferTo(testOutputFile.toFile());
System.out.println("Size: " + cmf.getSize());
printOutput(testOutputFile);
} catch (Exception e) {
e.printStackTrace();
fail();
} finally {
deleteSilent(testInputFile, testOutputFile);
}
}
#Test
public void testMp() {
Path testInputFile = null, testOutputFile = null;
try {
testInputFile = prepareInputFile();
DiskFileItem di = new DiskFileItem("file", "text/plain", false, testInputFile.getFileName().toString(),
(int) Files.size(testInputFile), testInputFile.getParent().toFile());
try (OutputStream out = di.getOutputStream();
InputStream in = Files.newInputStream(testInputFile)) {
IOUtils.copy(in, out);
}
CommonsMultipartFile cmf = new CommonsMultipartFile(di);
System.out.println("Size: " + cmf.getSize());
testOutputFile = testInputFile.getParent().resolve("testMpOutput.txt");
cmf.transferTo(testOutputFile.toFile());
printOutput(testOutputFile);
} catch (Exception e) {
e.printStackTrace();
fail();
} finally {
deleteSilent(testInputFile, testOutputFile);
}
}
private Path prepareInputFile() throws IOException {
Path tmpDir = Paths.get(System.getProperty("java.io.tmpdir"));
Path testInputFile = tmpDir.resolve("testMpinput.txt");
try (OutputStream out = Files.newOutputStream(testInputFile)){
out.write("Just a test.".getBytes(CS));
}
return testInputFile;
}
private void printOutput(Path p) throws IOException {
byte[] outBytes = Files.readAllBytes(p);
System.out.println("Output: " + new String(outBytes, CS));
}
private void deleteSilent(Path... paths) {
for (Path p : paths) {
try { if (p != null) p.toFile().delete(); } catch (Exception ignored) {}
}
}
}
The custom LocalFileItem class, YMMV!
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemHeaders;
public class LocalFileItem implements FileItem {
private static final long serialVersionUID = 2467880290855097332L;
private final Path localFile;
public LocalFileItem(Path localFile) {
this.localFile = localFile;
}
#Override
public void write(File file) throws Exception {
Files.move(localFile, file.toPath(), StandardCopyOption.REPLACE_EXISTING);
}
#Override
public long getSize() {
// Spring's CommonsMultipartFile caches the file size and uses it to determine availability.
long size = -1L;
try {
size = Files.size(localFile);
} catch (IOException ignored) {}
return size;
}
#Override
public void delete() {
localFile.toFile().delete();
}
/* *** properties and unsupported methods *** */
private FileItemHeaders headers;
private String contentType;
private String fieldName;
private boolean formField;
#Override
public FileItemHeaders getHeaders() {
return headers;
}
#Override
public void setHeaders(FileItemHeaders headers) {
this.headers = headers;
}
#Override
public InputStream getInputStream() throws IOException {
throw new IOException("Only method write(File) is supported.");
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
#Override
public String getContentType() {
return contentType;
}
#Override
public String getName() {
return localFile.getFileName().toString();
}
#Override
public boolean isInMemory() {
return false;
}
#Override
public byte[] get() {
throw new RuntimeException("Only method write(File) is supported.");
}
#Override
public String getString(String encoding)
throws UnsupportedEncodingException {
throw new RuntimeException("Only method write(File) is supported.");
}
#Override
public String getString() {
throw new RuntimeException("Only method write(File) is supported.");
}
#Override
public String getFieldName() {
return fieldName;
}
#Override
public void setFieldName(String name) {
this.fieldName = name;
}
#Override
public boolean isFormField() {
return formField;
}
#Override
public void setFormField(boolean state) {
this.formField = state;
}
#Override
public OutputStream getOutputStream() throws IOException {
throw new IOException("Only method write(File) is supported.");
}
}

Related

Java DecriptionInfo on Word DocX

I'm pulling my hair out as I cannot get the samples to work - hopefully someone can help..
I would like to DETECT if a docx and a doc file is password protected/encrypted. I have seen this posted in a few places but I cannot get it work - it doesnt throw an exception. Can someone see what I am doing wrong. Note I only need to detect the password..i dont want to open the document.
String fileLocation = "C:/myfile.docx";
File file = new File(fileLocation);
FileInputStream fis = new FileInputStream(file.getAbsolutePath());
POIFSFileSystem pfis = new POIFSFileSystem(fis);
try{
EncryptionInfo info = new EncryptionInfo(pfis);
EncryptionMode mode = info.getEncryptionMode();
Decryptor d = Decryptor.getInstance(info);
//Try and open it
if(!d.verifyPassword(Decryptor.DEFAULT_PASSWORD))
{
//file is encrypted
}
}
catch(GeneralSecurityException gse)
{
//file is encrypted
}
catch(EncryptedDocumentException edc)
{
//file is encrypted
}
I haven't elaborated much to get the code smaller, but I've simply taken one of the factory classes - like SlideShowFactory - and modified it for H/XWPF. As H/XWPF hasn't got a common interface on the document level (as of now), the quick&dirty approach is to return an Object.
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.PushbackInputStream;
import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.openxml4j.opc.PackageAccess;
import org.apache.poi.poifs.crypt.Decryptor;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.DocumentFactoryHelper;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.poi.poifs.filesystem.OfficeXmlFileException;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
public class EncDetect {
public static void main(String[] args) {
String dir = "/home/kiwiwings/project/poi/poi/test-data";
String[] files = {
"document/bug53475-password-is-solrcell.docx",
"document/password_tika_binaryrc4.doc",
"document/58067.docx",
"document/58804.doc"
};
for (String f : files) {
try {
DocumentFactory.create(new File(dir, f));
System.out.println(f + " not encrypted");
} catch (EncryptedDocumentException e) {
System.out.println(f + " is encrypted");
} catch (Exception e) {
System.out.println(f + " " +e.getMessage());
}
}
}
static class DocumentFactory {
public static Object create(NPOIFSFileSystem fs) throws IOException {
return create(fs, null);
}
public static Object create(final NPOIFSFileSystem fs, String password) throws IOException {
DirectoryNode root = fs.getRoot();
// Encrypted OOXML files go inside OLE2 containers, is this one?
if (root.hasEntry(Decryptor.DEFAULT_POIFS_ENTRY)) {
InputStream stream = null;
try {
stream = DocumentFactoryHelper.getDecryptedStream(fs, password);
return createXWPFDocument(stream);
} finally {
IOUtils.closeQuietly(stream);
}
}
// If we get here, it isn't an encrypted XWPF file
// So, treat it as a regular HWPF one
boolean passwordSet = false;
if (password != null) {
Biff8EncryptionKey.setCurrentUserPassword(password);
passwordSet = true;
}
try {
return createHWPFDocument(fs);
} finally {
if (passwordSet) {
Biff8EncryptionKey.setCurrentUserPassword(null);
}
}
}
public static Object create(InputStream inp) throws IOException, EncryptedDocumentException {
return create(inp, null);
}
public static Object create(InputStream inp, String password) throws IOException, EncryptedDocumentException {
// If clearly doesn't do mark/reset, wrap up
if (! inp.markSupported()) {
inp = new PushbackInputStream(inp, 8);
}
// Ensure that there is at least some data there
byte[] header8 = IOUtils.peekFirst8Bytes(inp);
// Try to create
if (NPOIFSFileSystem.hasPOIFSHeader(header8)) {
NPOIFSFileSystem fs = new NPOIFSFileSystem(inp);
return create(fs, password);
}
if (DocumentFactoryHelper.hasOOXMLHeader(inp)) {
return createXWPFDocument(inp);
}
throw new IllegalArgumentException("Your InputStream was neither an OLE2 stream, nor an OOXML stream");
}
public static Object create(File file) throws IOException, EncryptedDocumentException {
return create(file, null);
}
public static Object create(File file, String password) throws IOException, EncryptedDocumentException {
return create(file, password, false);
}
public static Object create(File file, String password, boolean readOnly) throws IOException, EncryptedDocumentException {
if (!file.exists()) {
throw new FileNotFoundException(file.toString());
}
NPOIFSFileSystem fs = null;
try {
fs = new NPOIFSFileSystem(file, readOnly);
return create(fs, password);
} catch(OfficeXmlFileException e) {
IOUtils.closeQuietly(fs);
return createXWPFDocument(file, readOnly);
} catch(RuntimeException e) {
IOUtils.closeQuietly(fs);
throw e;
}
}
protected static Object createHWPFDocument(NPOIFSFileSystem fs) throws IOException, EncryptedDocumentException {
return new HWPFDocument(fs.getRoot());
}
protected static Object createXWPFDocument(InputStream stream) throws IOException, EncryptedDocumentException {
return new XWPFDocument(stream);
}
protected static Object createXWPFDocument(File file, boolean readOnly) throws IOException, EncryptedDocumentException {
try {
OPCPackage pkg = OPCPackage.open(file, readOnly ? PackageAccess.READ : PackageAccess.READ_WRITE);
return new XWPFDocument(pkg);
} catch (InvalidFormatException e) {
throw new IOException(e);
}
}
}
}

How to add Progress bar to File Copy in Java

so I have class that is used to copy all of a specific file type from one directory to another directory. This class does work, but I am curious on what would be the best method of adding a progress bar to let the users know how far along in copying all the files.
So my question is, what would be the best method of adding a progress bar to this class. As you may see, there is no GUI being made by this class as it stands.
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
public class CopyFilesFromType
{
public static void main(File SourcePath, File DestPath)
{
new CopyFilesFromType().copy("tif", SourcePath.toString(), DestPath.toString());
}
private FileTypeOrFolderFilter filter = null;
private void copy(final String fileType, String fromPath, String outputPath)
{
filter = new FileTypeOrFolderFilter(fileType);
File currentFolder = new File(fromPath);
File outputFolder = new File(outputPath);
scanFolder(fileType, currentFolder, outputFolder);
}
private void scanFolder(final String fileType, File currentFolder, File outputFolder)
{
System.out.println("Scanning folder [" + currentFolder + "]...");
File[] files = currentFolder.listFiles(filter);
for (File file : files) {
if (file.isDirectory()) {
scanFolder(fileType, file, outputFolder);
} else {
copy(file, outputFolder);
}
}
}
private void copy(File file, File outputFolder)
{
try {
System.out.println("\tCopying [" + file + "] to folder [" + outputFolder + "]...");
InputStream input = new FileInputStream(file);
OutputStream out = new FileOutputStream(new File(outputFolder + File.separator + file.getName()));
byte data[] = new byte[input.available()];
input.read(data);
out.write(data);
out.flush();
out.close();
input.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private final class FileTypeOrFolderFilter implements FileFilter
{
private final String fileType;
private FileTypeOrFolderFilter(String fileType)
{
this.fileType = fileType;
}
public boolean accept(File pathname)
{
return pathname.getName().endsWith("." + fileType) || pathname.isDirectory();
}
}
}
Wrap the FileInputStream in a javax.swing.ProgressMonitorInputStream.

fineuploader file list empty

I am using fineuploader within a struts system but am having trouble getting the file list in the server code.
My jsp contains the following code:
$("#fine-uploader").fineUploader({
debug: true,
request: {
endpoint: '/NRGI/act_MultiPhotoUpload.do'
},
deleteFile: {
enabled: true,
endpoint: '/uploads'
},
retry: {
enableAuto: true
}
});
with the following div near the bottom of the page:
<div id="fine-uploader"></div>
The action actMultiPhotoUpload points to a class via the struts.config.xml file:
<action path="/act_MultiPhotoUpload" name="FileUploadForm" scope="request" validate="true"
type="com.solarcentury.nrgi.document.action.MultiUploadAction"
input="/D5_PhotoLibrary.jsp">
</action>
The class MultiUploadAction is taken from your UploadReceiver and is as follows:
public class MultiUploadAction extends Action {
static Static_Env_Object seo = new Static_Env_Object();
private String UPLOAD_NOT_ALLOWED = "exe";
private EnvUtils eu;
// JUST FOR TESTING
private static final File UPLOAD_DIR = new File("Test/uploads");
private static File TEMP_DIR = new File("Test/uploadsTemp");
private static String CONTENT_LENGTH = "Content-Length";
private static int SUCCESS_RESPONSE_CODE = 200;
#Override
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
HttpSession session = request.getSession();
String sId = session.getId();
eu = new EnvUtils(seo.get_Env_Name(), this.getClass().getSimpleName());
/* **************************************** */
/* * The code for the session timeout check */
/* **************************************** */
if (session.getAttribute("SESS_User") == null) {
eu.log("NO SESSION", "Session timed out...");
return (mapping.findForward("globaltimeout"));
}
UserObject suo = new UserObj_Util(session).get_SessUser();
WebAlertMessages wam = new WebAlertMessages(request, suo.get_Language_ID());
DemonUtil du = new DemonUtil(seo.get_Env_Name());
// DateUtils dateUtil = new DateUtils();
RequestParser requestParser = null;
boolean isIframe = request.getHeader("X-Requested-With") == null || !request.getHeader("X-Requested-With").equals("XMLHttpRequest");
try
{
// resp.setContentType(isIframe ? "text/html" : "text/plain");
response.setContentType("text/plain");
response.setStatus(SUCCESS_RESPONSE_CODE);
// resp.addHeader("Access-Control-Allow-Origin", "http://192.168.130.118:8080");
// resp.addHeader("Access-Control-Allow-Credentials", "true");
// resp.addHeader("Access-Control-Allow-Origin", "*");
if (ServletFileUpload.isMultipartContent(request))
{
MultipartUploadParser multipartUploadParser = new MultipartUploadParser(request, TEMP_DIR, request.getSession().getServletContext());
requestParser = RequestParser.getInstance(request, multipartUploadParser);
writeFileForMultipartRequest(requestParser);
writeResponse(response.getWriter(), requestParser.generateError() ? "Generated error" : null, isIframe, false, requestParser);
}
else
{
requestParser = RequestParser.getInstance(request, null);
//handle POST delete file request
if (requestParser.getMethod() != null
&& requestParser.getMethod().equalsIgnoreCase("DELETE"))
{
String uuid = requestParser.getUuid();
handleDeleteFileRequest(uuid, response);
}
else
{
writeFileForNonMultipartRequest(request, requestParser);
writeResponse(response.getWriter(), requestParser.generateError() ? "Generated error" : null, isIframe, false, requestParser);
}
}
} catch (Exception e)
{
eu.log("UploadReceiver","Problem handling upload request" + e);
if (e instanceof MultiUploadAction.MergePartsException)
{
writeResponse(response.getWriter(), e.getMessage(), isIframe, true, requestParser);
}
else
{
writeResponse(response.getWriter(), e.getMessage(), isIframe, false, requestParser);
}
}
return (new ActionForward(mapping.getInput()));
}
And I use the MultipartUploadParser, RequestParser from the server java examples on the website.
When I step through the code, how ever many files I select to upload, the file list is always empty. Obviously I am doing something stupid here, but would appreciate any guidance please.
I have seen a similar support question where the asker was having trouble getting the filelist, also using struts, but there wasn't an answer against the question
Added on 14/11/2013
The full code is as follows:
The full listing of MultiUploadAction.java is as follows:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.solarcentury.nrgi.document.action;
/**
*
* #author Roy
*/
import DemonWeb.DmForms.FileUploadForm;
import DemonWeb.DmLogic.DemonUtil;
import DemonWeb.DmLogic.Project;
import DemonWeb.DmSession.Static_Env_Object;
import DemonWeb.DmSession.UserObj_Util;
import DemonWeb.DmSession.UserObject;
import DemonWeb.DmSession.WebAlertMessages;
import DemonWeb.Utils.EnvUtils;
import com.solarcentury.nrgi.document.bean.Document;
import com.solarcentury.nrgi.document.logic.DocumentController;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;
import java.util.Enumeration;
import java.util.Collections;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;
/**
*
* #author ajantham
*/
public class MultiUploadAction extends Action {
static Static_Env_Object seo = new Static_Env_Object();
private String UPLOAD_NOT_ALLOWED = "exe";
private EnvUtils eu;
// JUST FOR TESTING
private static final File UPLOAD_DIR = new File("uploads");
private static File TEMP_DIR = new File("uploadsTemp");
private static String CONTENT_LENGTH = "Content-Length";
private static int SUCCESS_RESPONSE_CODE = 200;
#Override
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
HttpSession session = request.getSession();
String sId = session.getId();
eu = new EnvUtils(seo.get_Env_Name(), this.getClass().getSimpleName());
/* **************************************** */
/* * The code for the session timeout check */
/* **************************************** */
if (session.getAttribute("SESS_User") == null) {
eu.log("NO SESSION", "Session timed out...");
return (mapping.findForward("globaltimeout"));
}
UserObject suo = new UserObj_Util(session).get_SessUser();
WebAlertMessages wam = new WebAlertMessages(request, suo.get_Language_ID());
DemonUtil du = new DemonUtil(seo.get_Env_Name());
// DateUtils dateUtil = new DateUtils();
RequestParser requestParser = null;
boolean isIframe = request.getHeader("X-Requested-With") == null || !request.getHeader("X-Requested-With").equals("XMLHttpRequest");
try
{
// resp.setContentType(isIframe ? "text/html" : "text/plain");
response.setContentType("text/plain");
response.setStatus(SUCCESS_RESPONSE_CODE);
// resp.addHeader("Access-Control-Allow-Origin", "http://192.168.130.118:8080");
// resp.addHeader("Access-Control-Allow-Credentials", "true");
// resp.addHeader("Access-Control-Allow-Origin", "*");
if (ServletFileUpload.isMultipartContent(request))
{
MultipartUploadParser multipartUploadParser = new MultipartUploadParser(request, TEMP_DIR, request.getSession().getServletContext());
requestParser = RequestParser.getInstance(request, multipartUploadParser);
writeFileForMultipartRequest(requestParser);
writeResponse(response.getWriter(), requestParser.generateError() ? "Generated error" : null, isIframe, false, requestParser);
}
else
{
requestParser = RequestParser.getInstance(request, null);
//handle POST delete file request
if (requestParser.getMethod() != null
&& requestParser.getMethod().equalsIgnoreCase("DELETE"))
{
String uuid = requestParser.getUuid();
handleDeleteFileRequest(uuid, response);
}
else
{
writeFileForNonMultipartRequest(request, requestParser);
writeResponse(response.getWriter(), requestParser.generateError() ? "Generated error" : null, isIframe, false, requestParser);
}
}
} catch (Exception e)
{
eu.log("UploadReceiver","Problem handling upload request" + e);
if (e instanceof MultiUploadAction.MergePartsException)
{
writeResponse(response.getWriter(), e.getMessage(), isIframe, true, requestParser);
}
else
{
writeResponse(response.getWriter(), e.getMessage(), isIframe, false, requestParser);
}
}
return (new ActionForward(mapping.getInput()));
}
public void doDelete(HttpServletRequest req, HttpServletResponse resp) throws IOException
{
String uuid = req.getPathInfo().replaceAll("/", "");
handleDeleteFileRequest(uuid, resp);
}
private void handleDeleteFileRequest(String uuid, HttpServletResponse resp) throws IOException
{
FileUtils.deleteDirectory(new File(UPLOAD_DIR, uuid));
if (new File(UPLOAD_DIR, uuid).exists())
{
eu.log("UploadReceiver","couldn't find or delete " + uuid);
}
else
{
eu.log("UploadReceiver","deleted " + uuid);
}
resp.setStatus(SUCCESS_RESPONSE_CODE);
// resp.addHeader("Access-Control-Allow-Origin", "*");
}
private void writeFileForNonMultipartRequest(HttpServletRequest req, RequestParser requestParser) throws Exception
{
File dir = new File(UPLOAD_DIR, requestParser.getUuid());
dir.mkdirs();
String contentLengthHeader = req.getHeader(CONTENT_LENGTH);
long expectedFileSize = Long.parseLong(contentLengthHeader);
if (requestParser.getPartIndex() >= 0)
{
writeFile(req.getInputStream(), new File(dir, requestParser.getUuid() + "_" + String.format("%05d", requestParser.getPartIndex())), null);
if (requestParser.getTotalParts()-1 == requestParser.getPartIndex())
{
File[] parts = getPartitionFiles(dir, requestParser.getUuid());
File outputFile = new File(dir, requestParser.getFilename());
for (File part : parts)
{
mergeFiles(outputFile, part);
}
assertCombinedFileIsVaid(requestParser.getTotalFileSize(), outputFile, requestParser.getUuid());
deletePartitionFiles(dir, requestParser.getUuid());
}
}
else
{
writeFile(req.getInputStream(), new File(dir, requestParser.getFilename()), expectedFileSize);
}
}
private void writeFileForMultipartRequest(RequestParser requestParser) throws Exception
{
File dir = new File(UPLOAD_DIR, requestParser.getUuid());
dir.mkdirs();
if (requestParser.getPartIndex() >= 0)
{
writeFile(requestParser.getUploadItem().getInputStream(), new File(dir, requestParser.getUuid() + "_" + String.format("%05d", requestParser.getPartIndex())), null);
if (requestParser.getTotalParts()-1 == requestParser.getPartIndex())
{
File[] parts = getPartitionFiles(dir, requestParser.getUuid());
File outputFile = new File(dir, requestParser.getOriginalFilename());
for (File part : parts)
{
mergeFiles(outputFile, part);
}
assertCombinedFileIsVaid(requestParser.getTotalFileSize(), outputFile, requestParser.getUuid());
deletePartitionFiles(dir, requestParser.getUuid());
}
}
else
{
writeFile(requestParser.getUploadItem().getInputStream(), new File(dir, requestParser.getFilename()), null);
}
}
private void assertCombinedFileIsVaid(int totalFileSize, File outputFile, String uuid) throws MultiUploadAction.MergePartsException
{
if (totalFileSize != outputFile.length())
{
deletePartitionFiles(UPLOAD_DIR, uuid);
outputFile.delete();
throw new MultiUploadAction.MergePartsException("Incorrect combined file size!");
}
}
private static class PartitionFilesFilter implements FilenameFilter
{
private String filename;
PartitionFilesFilter(String filename)
{
this.filename = filename;
}
#Override
public boolean accept(File file, String s)
{
return s.matches(Pattern.quote(filename) + "_\\d+");
}
}
private static File[] getPartitionFiles(File directory, String filename)
{
File[] files = directory.listFiles(new MultiUploadAction.PartitionFilesFilter(filename));
Arrays.sort(files);
return files;
}
private static void deletePartitionFiles(File directory, String filename)
{
File[] partFiles = getPartitionFiles(directory, filename);
for (File partFile : partFiles)
{
partFile.delete();
}
}
private File mergeFiles(File outputFile, File partFile) throws IOException
{
FileOutputStream fos = new FileOutputStream(outputFile, true);
try
{
FileInputStream fis = new FileInputStream(partFile);
try
{
IOUtils.copy(fis, fos);
}
finally
{
IOUtils.closeQuietly(fis);
}
}
finally
{
IOUtils.closeQuietly(fos);
}
return outputFile;
}
private File writeFile(InputStream in, File out, Long expectedFileSize) throws IOException
{
FileOutputStream fos = null;
try
{
fos = new FileOutputStream(out);
IOUtils.copy(in, fos);
if (expectedFileSize != null)
{
Long bytesWrittenToDisk = out.length();
if (!expectedFileSize.equals(bytesWrittenToDisk))
{
eu.log("UploadReceiver","Expected file {} to be {} bytes; file on disk is {} bytes " + new Object[] { out.getAbsolutePath(), expectedFileSize, 1 });
out.delete();
throw new IOException(String.format("Unexpected file size mismatch. Actual bytes %s. Expected bytes %s.", bytesWrittenToDisk, expectedFileSize));
}
}
return out;
}
catch (Exception e)
{
throw new IOException(e);
}
finally
{
IOUtils.closeQuietly(fos);
}
}
private void writeResponse(PrintWriter writer, String failureReason, boolean isIframe, boolean restartChunking, RequestParser requestParser)
{
if (failureReason == null)
{
// if (isIframe)
// {
// writer.print("{\"success\": true, \"uuid\": \"" + requestParser.getUuid() + "\"}<script src=\"http://192.168.130.118:8080/client/js/iframe.xss.response.js\"></script>");
// }
// else
// {
writer.print("{\"success\": true}");
// }
}
else
{
if (restartChunking)
{
writer.print("{\"error\": \"" + failureReason + "\", \"reset\": true}");
}
else
{
// if (isIframe)
// {
// writer.print("{\"error\": \"" + failureReason + "\", \"uuid\": \"" + requestParser.getUuid() + "\"}<script src=\"http://192.168.130.118:8080/client/js/iframe.xss.response.js\"></script>");
// }
// else
// {
writer.print("{\"error\": \"" + failureReason + "\"}");
// }
}
}
}
private class MergePartsException extends Exception
{
MergePartsException(String message)
{
super(message);
}
}
}
The full source of MultipartUploadParser.java is as follows:
package com.solarcentury.nrgi.document.action;
import DemonWeb.DmSession.Static_Env_Object;
import DemonWeb.Utils.EnvUtils;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.FileCleanerCleanup;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FileCleaningTracker;
import org.apache.commons.lang3.StringUtils;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.*;
public class MultipartUploadParser
{
// final Logger log = LoggerFactory.getLogger(MultipartUploadParser.class);
static Static_Env_Object seo = new Static_Env_Object();
private EnvUtils eu;
private Map<String, String> params = new HashMap<String, String>();
private List<FileItem> files = new ArrayList<FileItem>();
// fileItemsFactory is a field (even though it's scoped to the constructor) to prevent the
// org.apache.commons.fileupload.servlet.FileCleanerCleanup thread from attempting to delete the
// temp file before while it is still being used.
//
// FileCleanerCleanup uses a java.lang.ref.ReferenceQueue to delete the temp file when the FileItemsFactory marker object is GCed
private DiskFileItemFactory fileItemsFactory;
public MultipartUploadParser(HttpServletRequest request, File repository, ServletContext context) throws Exception
{
this.eu = new EnvUtils(seo.get_Env_Name(), "MultipartUploadParser " + "1.0.0.0");
if (!repository.exists() && !repository.mkdirs())
{
throw new IOException("Unable to mkdirs to " + repository.getAbsolutePath());
}
fileItemsFactory = setupFileItemFactory(repository, context);
ServletFileUpload upload = new ServletFileUpload(fileItemsFactory);
List<FileItem> formFileItems = upload.parseRequest(request);
parseFormFields(formFileItems);
if (files.isEmpty())
{
eu.log("MultipartUploadParser","No files were found when processing the request. Debugging info follows");
writeDebugInfo(request);
throw new FileUploadException("No files were found when processing the request.");
}
else
{
writeDebugInfo(request);
}
}
private DiskFileItemFactory setupFileItemFactory(File repository, ServletContext context)
{
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(DiskFileItemFactory.DEFAULT_SIZE_THRESHOLD);
factory.setRepository(repository);
FileCleaningTracker pTracker = FileCleanerCleanup.getFileCleaningTracker(context);
factory.setFileCleaningTracker(pTracker);
return factory;
}
private void writeDebugInfo(HttpServletRequest request)
{
eu.log("MultipartUploadParser","-- POST HEADERS --");
for (String header : Collections.list((Enumeration<String>) request.getHeaderNames()))
{
eu.log("MultipartUploadParser", header + "header " + request.getHeader(header));
}
eu.log("MultipartUploadParser","-- POST PARAMS --");
for (String key : params.keySet())
{
eu.log("MultipartUploadParser", key + " key " + params.get(key));
}
}
private void parseFormFields(List<FileItem> items) throws UnsupportedEncodingException
{
for (FileItem item : items)
{
if (item.isFormField())
{
String key = item.getFieldName();
String value = item.getString("UTF-8");
if (StringUtils.isNotBlank(key))
{
params.put(key, StringUtils.defaultString(value));
}
}
else
{
files.add(item);
}
}
}
public Map<String, String> getParams()
{
return params;
}
public List<FileItem> getFiles()
{
if (files.isEmpty())
{
throw new RuntimeException("No FileItems exist.");
}
return files;
}
public FileItem getFirstFile()
{
if (files.isEmpty())
{
throw new RuntimeException("No FileItems exist.");
}
return files.iterator().next();
}
}
MultiUploadAction decides that the request isMultipartContent and so calls MultipartUploadParser. This class successfully
checks the directory structure and then uses its method ParseFormFields to buld up a list of files.
However it does not find any files or form fields, and so on line 62 of MultipartUploadParser files.isEmpty() is true,
and so an exception is thrown (line 70)
It doesn't matter how many files I select in the client, the file list is always empty.
Many thanks for your help in this - much appreciated
I know this is very old, but I ran into this same problem. In my implementation I had tried to adapt the example endpoint code into my Spring MVC project. I discovered that the Spring MVC framework was actually calling the same Apache ServletFileUpload.parseRequest BEFORE passing the request to my controller and detecting the multipart, fetching the params, etc. The framework was parsing the multipart request despite whether I was using MutlipartHttpServlet request, or simply HttpServletRequest as my signature for the controller method. When my code in the MultipartUploadParser hit ServletFileUpload.parseRequest again, this time it returned an empty List because they had already been parsed.
The endpoint example code in the git repo for Fine Uploader works as it is, it was just my adaptation with Spring MVC that didn't work.

Android External File Inconsistently Appearing

I'm using an IntentService to append single NMEA strings to a log file stored in the external public storage on an Android device, but I'm getting inconsistent behavior.
First off the log file does not appear when the device is connected for USB debugging. I read that many Android devices cannot write to external storage when connected via USB, but even when it is run disconnected from USB, it may take several times of turning it on and off and rerunning the applications before the log file appears in the file system. If I do not clear the log, I still have to restart the phone before it will begin appending to the file again.
How can I get the file to appear consistently everytime?
import android.app.IntentService;
import android.content.Intent;
public class LogFileService extends IntentService {
DebugLog debug = new DebugLog("LogFileService");
public static final String GPS_STR = "GPS_STR";
public static final String FILE_PATH = "FILE_PATH";
public static final String FILE_NAME = "gps_data.txt";
public LogFileService() {
super("LogFileService");
}
#Override
protected void onHandleIntent(Intent intent) {
debug.log("Handling intent");
String data = intent.getStringExtra(GPS_STR);
debug.log("Writing " + data);
GpsLogFile logFile = new GpsLogFile(FILE_NAME);
logFile.open();
logFile.write(data);
logFile.close();
}
#Override
public void onCreate() {
super.onCreate();
debug.log("Created");
}
}
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import android.content.Context;
import android.os.Environment;
public class GpsLogFile {
DebugLog debug = new DebugLog("LogFile");
private File filePath = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS
);
private File logFile = null;
private String fileName = null;
private PrintWriter fileOut = null;
public GpsLogFile(String name) {
fileName = name;
}
public void open() {
try {
filePath.mkdirs();
if (!isExternalMediaAvailable()) {
throw new IOException("External media not available.");
}
logFile = new File(filePath, fileName);
//logFile.mkdirs();
if (!logFile.exists()) {
logFile.createNewFile();
}
fileOut = new PrintWriter(
new FileOutputStream(logFile.getAbsolutePath(), true)
);
} catch (IOException e) {
debug.log("Unable to open file.");
debug.log(e.getMessage());
}
}
public void write(String data) {
debug.log("Writing to " + logFile.getAbsolutePath() + " " + data);
try {
fileOut.write(data);
//fileOut.newLine();
checkPrintWriterError(fileOut);
fileOut.flush();
} catch (IOException e) {
debug.log("Unable to write");
debug.log(e.getMessage());
}
}
public void close() {
if (null != fileOut) {
try {
fileOut.close();
checkPrintWriterError(fileOut);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void checkPrintWriterError(PrintWriter writer) throws IOException {
if (true == writer.checkError()) {
throw new IOException("Print writer error.");
}
}
}

How To Modify The Raw XML message of an Outbound CXF Request?

I would like to modify an outgoing SOAP Request.
I would like to remove 2 xml nodes from the Envelope's body.
I managed to set up an Interceptor and get the generated String value of the message set to the endpoint.
However, the following code does not seem to work as the outgoing message is not edited as expected. Does anyone have some code or ideas on how to do this?
public class MyOutInterceptor extends AbstractSoapInterceptor {
public MyOutInterceptor() {
super(Phase.SEND);
}
public void handleMessage(SoapMessage message) throws Fault {
// Get message content for dirty editing...
StringWriter writer = new StringWriter();
CachedOutputStream cos = (CachedOutputStream)message.getContent(OutputStream.class);
InputStream inputStream = cos.getInputStream();
IOUtils.copy(inputStream, writer, "UTF-8");
String content = writer.toString();
// remove the substrings from envelope...
content = content.replace("<idJustification>0</idJustification>", "");
content = content.replace("<indicRdv>false</indicRdv>", "");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
outputStream.write(content.getBytes(Charset.forName("UTF-8")));
message.setContent(OutputStream.class, outputStream);
}
Based on the first comment, I created an abstract class which can easily be used to change the whole soap envelope.
Just in case someone wants a ready-to-use code part.
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.log4j.Logger;
/**
* http://www.mastertheboss.com/jboss-web-services/apache-cxf-interceptors
* http://stackoverflow.com/questions/6915428/how-to-modify-the-raw-xml-message-of-an-outbound-cxf-request
*
*/
public abstract class MessageChangeInterceptor extends AbstractPhaseInterceptor<Message> {
public MessageChangeInterceptor() {
super(Phase.PRE_STREAM);
addBefore(SoapPreProtocolOutInterceptor.class.getName());
}
protected abstract Logger getLogger();
protected abstract String changeOutboundMessage(String currentEnvelope);
protected abstract String changeInboundMessage(String currentEnvelope);
public void handleMessage(Message message) {
boolean isOutbound = false;
isOutbound = message == message.getExchange().getOutMessage()
|| message == message.getExchange().getOutFaultMessage();
if (isOutbound) {
OutputStream os = message.getContent(OutputStream.class);
CachedStream cs = new CachedStream();
message.setContent(OutputStream.class, cs);
message.getInterceptorChain().doIntercept(message);
try {
cs.flush();
IOUtils.closeQuietly(cs);
CachedOutputStream csnew = (CachedOutputStream) message.getContent(OutputStream.class);
String currentEnvelopeMessage = IOUtils.toString(csnew.getInputStream(), "UTF-8");
csnew.flush();
IOUtils.closeQuietly(csnew);
if (getLogger().isDebugEnabled()) {
getLogger().debug("Outbound message: " + currentEnvelopeMessage);
}
String res = changeOutboundMessage(currentEnvelopeMessage);
if (res != null) {
if (getLogger().isDebugEnabled()) {
getLogger().debug("Outbound message has been changed: " + res);
}
}
res = res != null ? res : currentEnvelopeMessage;
InputStream replaceInStream = IOUtils.toInputStream(res, "UTF-8");
IOUtils.copy(replaceInStream, os);
replaceInStream.close();
IOUtils.closeQuietly(replaceInStream);
os.flush();
message.setContent(OutputStream.class, os);
IOUtils.closeQuietly(os);
} catch (IOException ioe) {
getLogger().warn("Unable to perform change.", ioe);
throw new RuntimeException(ioe);
}
} else {
try {
InputStream is = message.getContent(InputStream.class);
String currentEnvelopeMessage = IOUtils.toString(is, "UTF-8");
IOUtils.closeQuietly(is);
if (getLogger().isDebugEnabled()) {
getLogger().debug("Inbound message: " + currentEnvelopeMessage);
}
String res = changeInboundMessage(currentEnvelopeMessage);
if (res != null) {
if (getLogger().isDebugEnabled()) {
getLogger().debug("Inbound message has been changed: " + res);
}
}
res = res != null ? res : currentEnvelopeMessage;
is = IOUtils.toInputStream(res, "UTF-8");
message.setContent(InputStream.class, is);
IOUtils.closeQuietly(is);
} catch (IOException ioe) {
getLogger().warn("Unable to perform change.", ioe);
throw new RuntimeException(ioe);
}
}
}
public void handleFault(Message message) {
}
private class CachedStream extends CachedOutputStream {
public CachedStream() {
super();
}
protected void doFlush() throws IOException {
currentStream.flush();
}
protected void doClose() throws IOException {
}
protected void onWrite() throws IOException {
}
}
}
I had this problem as well today. After much weeping and gnashing of teeth, I was able to alter the StreamInterceptor class in the configuration_interceptor demo that comes with the CXF source:
OutputStream os = message.getContent(OutputStream.class);
CachedStream cs = new CachedStream();
message.setContent(OutputStream.class, cs);
message.getInterceptorChain().doIntercept(message);
try {
cs.flush();
CachedOutputStream csnew = (CachedOutputStream) message.getContent(OutputStream.class);
String soapMessage = IOUtils.toString(csnew.getInputStream());
...
The soapMessage variable will contain the complete SOAP message. You should be able to manipulate the soap message, flush it to an output stream and do a message.setContent(OutputStream.class... call to put your modifications on the message. This comes with no warranty, since I'm pretty new to CXF myself!
Note: CachedStream is a private class in the StreamInterceptor class. Don't forget to configure your interceptor to run in the PRE_STREAM phase so that the SOAP interceptors have a chance to write the SOAP message.
Following is able to bubble up server side exceptions. Use of os.close() instead of IOUtils.closeQuietly(os) in previous solution is also able to bubble up exceptions.
public class OutInterceptor extends AbstractPhaseInterceptor<Message> {
public OutInterceptor() {
super(Phase.PRE_STREAM);
addBefore(StaxOutInterceptor.class.getName());
}
public void handleMessage(Message message) {
OutputStream os = message.getContent(OutputStream.class);
CachedOutputStream cos = new CachedOutputStream();
message.setContent(OutputStream.class, cos);
message.getInterceptorChain.aad(new PDWSOutMessageChangingInterceptor(os));
}
}
public class OutMessageChangingInterceptor extends AbstractPhaseInterceptor<Message> {
private OutputStream os;
public OutMessageChangingInterceptor(OutputStream os){
super(Phase.PRE_STREAM_ENDING);
addAfter(StaxOutEndingInterceptor.class.getName());
this.os = os;
}
public void handleMessage(Message message) {
try {
CachedOutputStream csnew = (CachedOutputStream) message .getContent(OutputStream.class);
String currentEnvelopeMessage = IOUtils.toString( csnew.getInputStream(), (String) message.get(Message.ENCODING));
csnew.flush();
IOUtils.closeQuietly(csnew);
String res = changeOutboundMessage(currentEnvelopeMessage);
res = res != null ? res : currentEnvelopeMessage;
InputStream replaceInStream = IOUtils.tolnputStream(res, (String) message.get(Message.ENCODING));
IOUtils.copy(replaceInStream, os);
replaceInStream.close();
IOUtils.closeQuietly(replaceInStream);
message.setContent(OutputStream.class, os);
} catch (IOException ioe) {
throw new RuntimeException(ioe);
}
}
}
Good example for replacing outbound soap content based on this
package kz.bee.bip;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
public class SOAPOutboundInterceptor extends AbstractPhaseInterceptor<Message> {
public SOAPOutboundInterceptor() {
super(Phase.PRE_STREAM);
addBefore(SoapPreProtocolOutInterceptor.class.getName());
}
public void handleMessage(Message message) {
boolean isOutbound = false;
isOutbound = message == message.getExchange().getOutMessage()
|| message == message.getExchange().getOutFaultMessage();
if (isOutbound) {
OutputStream os = message.getContent(OutputStream.class);
CachedStream cs = new CachedStream();
message.setContent(OutputStream.class, cs);
message.getInterceptorChain().doIntercept(message);
try {
cs.flush();
IOUtils.closeQuietly(cs);
CachedOutputStream csnew = (CachedOutputStream) message.getContent(OutputStream.class);
String currentEnvelopeMessage = IOUtils.toString(csnew.getInputStream(), "UTF-8");
csnew.flush();
IOUtils.closeQuietly(csnew);
/* here we can set new data instead of currentEnvelopeMessage*/
InputStream replaceInStream = IOUtils.toInputStream(currentEnvelopeMessage, "UTF-8");
IOUtils.copy(replaceInStream, os);
replaceInStream.close();
IOUtils.closeQuietly(replaceInStream);
os.flush();
message.setContent(OutputStream.class, os);
IOUtils.closeQuietly(os);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
public void handleFault(Message message) {
}
private static class CachedStream extends CachedOutputStream {
public CachedStream() {
super();
}
protected void doFlush() throws IOException {
currentStream.flush();
}
protected void doClose() throws IOException {
}
protected void onWrite() throws IOException {
}
}
}
a better way would be to modify the message using the DOM interface, you need to add the SAAJOutInterceptor first (this might have a performance hit for big requests) and then your custom interceptor that is executed in phase USER_PROTOCOL
import org.apache.cxf.binding.soap.SoapMessage;
import org.apache.cxf.binding.soap.interceptor.AbstractSoapInterceptor;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.phase.Phase;
import org.w3c.dom.Node;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPMessage;
abstract public class SoapNodeModifierInterceptor extends AbstractSoapInterceptor {
SoapNodeModifierInterceptor() { super(Phase.USER_PROTOCOL); }
#Override public void handleMessage(SoapMessage message) throws Fault {
try {
if (message == null) {
return;
}
SOAPMessage sm = message.getContent(SOAPMessage.class);
if (sm == null) {
throw new RuntimeException("You must add the SAAJOutInterceptor to the chain");
}
modifyNodes(sm.getSOAPBody());
} catch (SOAPException e) {
throw new RuntimeException(e);
}
}
abstract void modifyNodes(Node node);
}
this one's working for me. It's based on StreamInterceptor class from configuration_interceptor example in Apache CXF samples.
It's in Scala instead of Java but the conversion is straightforward.
I tried to add comments to explain what's happening (as far as I understand).
import java.io.OutputStream
import org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor
import org.apache.cxf.helpers.IOUtils
import org.apache.cxf.io.CachedOutputStream
import org.apache.cxf.message.Message
import org.apache.cxf.phase.AbstractPhaseInterceptor
import org.apache.cxf.phase.Phase
// java note: base constructor call is hidden at the end of class declaration
class StreamInterceptor() extends AbstractPhaseInterceptor[Message](Phase.PRE_STREAM) {
// java note: put this into the constructor after calling super(Phase.PRE_STREAM);
addBefore(classOf[SoapPreProtocolOutInterceptor].getName)
override def handleMessage(message: Message) = {
// get original output stream
val osOrig = message.getContent(classOf[OutputStream])
// our output stream
val osNew = new CachedOutputStream
// replace it with ours
message.setContent(classOf[OutputStream], osNew)
// fills the osNew instead of osOrig
message.getInterceptorChain.doIntercept(message)
// flush before getting content
osNew.flush()
// get filled content
val content = IOUtils.toString(osNew.getInputStream, "UTF-8")
// we got the content, we may close our output stream now
osNew.close()
// modified content
val modifiedContent = content.replace("a-string", "another-string")
// fill original output stream
osOrig.write(modifiedContent.getBytes("UTF-8"))
// flush before set
osOrig.flush()
// replace with original output stream filled with our modified content
message.setContent(classOf[OutputStream], osOrig)
}
}

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