Java Code Examples for java.io.OutputStream

@Test
public void writeRandomAccessRead() throws IOException {
    final Transaction txn = env.beginTransaction();
    final File file0 = vfs.createFile(txn, "file0");
    final OutputStream outputStream = vfs.appendFile(txn, file0);
    outputStream.write((HOEGAARDEN + HOEGAARDEN + HOEGAARDEN + HOEGAARDEN).getBytes(UTF_8));
    outputStream.close();
    txn.flush();
    InputStream inputStream = vfs.readFile(txn, file0, 0);
    Assert.assertEquals(HOEGAARDEN + HOEGAARDEN + HOEGAARDEN + HOEGAARDEN, streamAsString(inputStream));
    inputStream.close();
    inputStream = vfs.readFile(txn, file0, 10);
    Assert.assertEquals(HOEGAARDEN + HOEGAARDEN + HOEGAARDEN, streamAsString(inputStream));
    inputStream.close();
    inputStream = vfs.readFile(txn, file0, 20);
    Assert.assertEquals(HOEGAARDEN + HOEGAARDEN, streamAsString(inputStream));
    inputStream.close();
    inputStream = vfs.readFile(txn, file0, 30);
    Assert.assertEquals(HOEGAARDEN, streamAsString(inputStream));
    inputStream.close();
    txn.abort();
}
 

/**
 * Creates a new COSOutputStream writes to an encoded COS stream.
 * 
 * @param filters Filters to apply.
 * @param parameters Filter parameters.
 * @param output Encoded stream.
 * @param scratchFile Scratch file to use.
 * 
 * @throws IOException If there was an error creating a temporary buffer
 */
COSOutputStream(List<Filter> filters, COSDictionary parameters, OutputStream output,
                ScratchFile scratchFile) throws IOException
{
    super(output);
    this.filters = filters;
    this.parameters = parameters;
    this.scratchFile = scratchFile;

    if (filters.isEmpty())
    {
        this.buffer = null;
    }
    else
    {
        this.buffer = scratchFile.createBuffer();
    }
}
 

/**
 * 下载文件
 */
public static void downloadFile(HttpServletResponse response, String filePath) {
    try {
        String originalFileName = FilenameUtils.getName(filePath);
        String downloadedFileName = new String(originalFileName.getBytes("GBK"), "ISO8859_1"); // 防止中文乱码

        response.setContentType("application/octet-stream");
        response.addHeader("Content-Disposition", "attachment;filename=\"" + downloadedFileName + "\"");

        InputStream inputStream = new BufferedInputStream(new FileInputStream(filePath));
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
        StreamUtil.copyStream(inputStream, outputStream);
    } catch (Exception e) {
        logger.error("下载文件出错！", e);
        throw new RuntimeException(e);
    }
}
 

public static void CopyStream(InputStream is, OutputStream os)  
{  
    final int buffer_size=1024;  
    try  
    {  
        byte[] bytes=new byte[buffer_size];  
        for(;;)  
        {  
          int count=is.read(bytes, 0, buffer_size);  
          if(count==-1)  
              break;  
          os.write(bytes, 0, count);                 
        }
        is.close();  
        os.close(); 
    }  
    catch(Exception ex){
    	ex.printStackTrace();
    }  
}
 

@Override
public void serializeBody(OutputStream stream) throws IOException {
    StreamingUtils.writeInt(flags, stream);
    StreamingUtils.writeTLString(id, stream);
    StreamingUtils.writeTLString(type, stream);
    if ((flags & FLAG_PHOTO) != 0) {
        StreamingUtils.writeTLObject(photo, stream);
    }
    if ((flags & FLAG_DOCUMENT) != 0) {
        StreamingUtils.writeTLObject(photo, stream);
    }
    if ((flags & FLAG_TITLE) != 0) {
        StreamingUtils.writeTLString(title, stream);
    }
    if ((flags & FLAG_DESCRIPTION) != 0) {
        StreamingUtils.writeTLString(title, stream);
    }
    StreamingUtils.writeTLObject(sendMessage, stream);
}
 

/**
 * Implementation only supports unix line-end format and is suitable for
 * processing HTTP and other network protocol communications. Reads and writes
 * a line of data. Returns the number of bytes read/written.
 */
public static int readLine(InputStream in,
                           OutputStream out) throws IOException {

    int count = 0;

    for (;;) {
        int b = in.read();

        if (b == -1) {
            break;
        }

        count++;

        out.write(b);

        if (b == '\n') {
            break;
        }
    }

    return count;
}
 

public void encode (@Nonnull @WillNotClose final InputStream aDecodedIS,
                    @Nonnull @WillNotClose final OutputStream aOS)
{
  ValueEnforcer.notNull (aDecodedIS, "DecodedInputStream");
  ValueEnforcer.notNull (aOS, "OutputStream");

  try
  {
    int nByte;
    while ((nByte = aDecodedIS.read ()) != -1)
    {
      aOS.write (StringHelper.getHexChar ((nByte & 0xf0) >> 4));
      aOS.write (StringHelper.getHexChar (nByte & 0x0f));
    }
  }
  catch (final IOException ex)
  {
    throw new EncodeException ("Failed to encode Base16", ex);
  }
}
 

private void write(@NonNull OutputStream out, @NonNull BackupProtos.BackupFrame frame) throws IOException {
  try {
    Conversions.intToByteArray(iv, 0, counter++);
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(cipherKey, "AES"), new IvParameterSpec(iv));

    byte[] frameCiphertext = cipher.doFinal(frame.toByteArray());
    byte[] frameMac        = mac.doFinal(frameCiphertext);
    byte[] length          = Conversions.intToByteArray(frameCiphertext.length + 10);

    out.write(length);
    out.write(frameCiphertext);
    out.write(frameMac, 0, 10);
  } catch (InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
    throw new AssertionError(e);
  }
}
 

protected WriterService createWriterService( final OutputStream out ) throws UnsupportedEncodingException {
  final String encoding =
      configuration.getConfigProperty( HtmlTableModule.ENCODING, EncodingRegistry.getPlatformDefaultEncoding() );

  if ( isCreateBodyFragment() == false ) {
    if ( isInlineStylesRequested() ) {
      return WriterService.createPassThroughService( out, encoding );
    } else {
      if ( isExternalStyleSheetRequested() && isForceBufferedWriting() == false ) {
        return WriterService.createPassThroughService( out, encoding );
      } else {
        return WriterService.createBufferedService( out, encoding );
      }
    }
  } else {
    return WriterService.createPassThroughService( out, encoding );
  }
}
 

@Override
protected void setUp() throws Exception {
    super.setUp();
    File dataDir = getDataDir();
    fname = getName().replace("test", "");
    File f = new File(dataDir, getClass().getName().
            replaceAll("\\.", "/") + "/" + fname + ".fxml");
    
    File w = new File(getWorkDir(), f.getName());
    InputStream is = new FileInputStream(f);
    OutputStream os = new FileOutputStream(w);
    FileUtil.copy(is, os);
    os.close();
    is.close();
    FileObject fo = FileUtil.toFileObject(w);
    sourceDO = DataObject.find(fo);
    document = ((EditorCookie)sourceDO.getCookie(EditorCookie.class)).openDocument();
    hierarchy = TokenHierarchy.get(document);
}
 

static void help(JkCommandSet run, Path xmlFile) {
    final Document document = JkUtilsXml.createDocument();
    final Element runEl = RunClassDef.of(run).toElement(document);
    document.appendChild(runEl);
    if (xmlFile == null) {
        JkUtilsXml.output(document, System.out);
    } else {
        JkUtilsPath.createFile(xmlFile);
        try (final OutputStream os = Files.newOutputStream(xmlFile)) {
            JkUtilsXml.output(document, os);
        } catch (final IOException e) {
            throw JkUtilsThrowable.unchecked(e);
        }
        JkLog.info("Xml help file generated at " + xmlFile);
    }
}
 

@Override
public void serializeBody(OutputStream stream) throws IOException {
    computeFlags();

    writeInt(flags, stream);
    writeTLObject(peer, stream);
    writeInt(topMessage, stream);
    writeInt(readInboxMaxId, stream);
    writeInt(readOutboxMaxId, stream);
    writeInt(unreadCount, stream);
    writeTLObject(notifySettings, stream);
    if ((flags & 1) != 0) {
        if (pts == null) throwNullFieldException("pts", flags);
        writeInt(pts, stream);
    }
    if ((flags & 2) != 0) {
        if (draft == null) throwNullFieldException("draft", flags);
        writeTLObject(draft, stream);
    }
}
 

public static long copy(@WillNotClose InputStream in, @WillNotClose OutputStream out, long maxBytes)

            throws IOException {
        long total = 0;

        int sz = 0;

        byte buf[] = myByteBuf.get();

        while (maxBytes > 0 && (sz = in.read(buf, 0, (int) Math.min(maxBytes, buf.length))) > 0) {
            total += sz;
            maxBytes -= sz;
            out.write(buf, 0, sz);
        }

        return total;
    }
 

@Override
public int serialize(OutputStream out, Tuple input) throws IOException {
  JSONObject jsonObject = new JSONObject();

  for (int i = 0; i < projectedPaths.length; i++) {
    String [] paths = projectedPaths[i].split(NestedPathUtil.PATH_DELIMITER);
    putValue(jsonObject, paths[0], paths, 0, i, input);
  }

  String jsonStr = jsonObject.toJSONString();
  byte [] jsonBytes = jsonStr.getBytes(TextDatum.DEFAULT_CHARSET);
  out.write(jsonBytes);
  return jsonBytes.length;
}
 

/**
 * Saves the mesh as OBJ format to the given {@link OutputStream}. Currently
 * no texture coordinates are supported or written.
 * 
 * @param stream
 */
public void saveAsOBJ(OutputStream stream) {
    OBJWriter obj = new OBJWriter();
    obj.beginSave(stream);
    saveAsOBJ(obj);
    obj.endSave();
}
 

public void getOutputStream(TGBrowserCallBack<OutputStream> cb, TGBrowserElement element) {
	try {
		throw new TGBrowserException("No writable file system");
	} catch (Throwable e) {
		cb.handleError(e);
	}
}
 

public static void writeIntMM(OutputStream os, int value) throws IOException {
	os.write(new byte[] {
		(byte)(value >>> 24),
		(byte)(value >>> 16),
		(byte)(value >>> 8),
		(byte)value});
}
 

public LinkHamp(InputStream is,
                OutputStream os)
{
  this(ServicesAmp.newManager().start(),
       "remote://",
       is, os);
}
 

/**
 * Helper method trying to ensure that the file location provided by the user
 * exists. If that is not the case it prompts the user if an empty
 * configuration file should be created.
 *
 * @param location
 *          the configuration file location
 * @throws CheckstylePluginException
 *           error when trying to ensure the location file existance
 */
private boolean ensureFileExists(String location) throws CheckstylePluginException {

  // support dynamic location strings
  String resolvedLocation = ExternalFileConfigurationType.resolveDynamicLocation(location);

  File file = new File(resolvedLocation);
  if (!file.exists()) {
    boolean confirm = MessageDialog.openQuestion(mBtnBrowse.getShell(),
            Messages.ExternalFileConfigurationEditor_titleFileDoesNotExist,
            Messages.ExternalFileConfigurationEditor_msgFileDoesNotExist);
    if (confirm) {

      if (file.getParentFile() != null) {
        file.getParentFile().mkdirs();
      }

      try (OutputStream out = new BufferedOutputStream(new FileOutputStream(file))) {
        ConfigurationWriter.writeNewConfiguration(out, mWorkingCopy);
      } catch (IOException ioe) {
        CheckstylePluginException.rethrow(ioe);
      }
      return true;
    }
    return false;
  }

  return true;
}
 

static void writeLong(OutputStream os, long n) throws IOException {
    os.write((byte)(n >>> 0));
    os.write((byte)(n >>> 8));
    os.write((byte)(n >>> 16));
    os.write((byte)(n >>> 24));
    os.write((byte)(n >>> 32));
    os.write((byte)(n >>> 40));
    os.write((byte)(n >>> 48));
    os.write((byte)(n >>> 56));
}
 

/** {@inheritDoc} */
@Override protected void writeToSocket(
    ClusterNode node,
    Socket sock,
    OutputStream out,
    TcpDiscoveryAbstractMessage msg,
    long timeout
) throws IOException, IgniteCheckedException {
    if (isDrop(msg))
        return;

    super.writeToSocket(node, sock, out, msg, timeout);
}
 

private void writeRecordFields(final Record record, final RecordSchema schema, final OutputStream out) throws IOException {
    final DataOutputStream dos = out instanceof DataOutputStream ? (DataOutputStream) out : new DataOutputStream(out);
    for (final RecordField field : schema.getFields()) {
        final Object value = record.getFieldValue(field);

        try {
            writeFieldRepetitionAndValue(field, value, dos);
        } catch (final Exception e) {
            throw new IOException("Failed to write field '" + field.getFieldName() + "'", e);
        }
    }
}
 

/**
 * 書込みのテスト - メソッドにアノテーションを付与
 */
@Test
public void test_save_comment_method_anno() throws Exception {
    
    // テストデータの作成
    final MethodAnnoSheet outSheet = new MethodAnnoSheet();
    
    outSheet.comment1("コメント1")
        .comment2("コメント2");
    
    // ファイルへの書き込み
    XlsMapper mapper = new XlsMapper();
    mapper.getConfiguration().setContinueTypeBindFailure(true);

    File outFile = new File(OUT_DIR, outFilename);
    try(InputStream template = new FileInputStream(templateFile);
            OutputStream out = new FileOutputStream(outFile)) {

        mapper.save(template, out, outSheet);
    }

    // 書き込んだファイルを読み込み値の検証を行う。
    try(InputStream in = new FileInputStream(outFile)) {
        SheetBindingErrors<MethodAnnoSheet> errors = mapper.loadDetail(in, MethodAnnoSheet.class);

        MethodAnnoSheet sheet = errors.getTarget();
        
        assertThat(sheet.comment1Position).isEqualTo(CellPosition.of("B3"));
        assertThat(sheet.comment2Position).isEqualTo(CellPosition.of("C5"));
    
        assertThat(sheet.labels).isNull();
        
        assertThat(sheet.comments).isNull();

        assertThat(sheet.comment1).isEqualTo(outSheet.comment1);
        assertThat(sheet.comment2).isEqualTo(outSheet.comment2);
    }
        
}
 

private boolean copyFile(InputStream in, OutputStream out) throws IOException {
  byte[] buffer = new byte[1024];
  int read;
  while((read = in.read(buffer)) != -1){
    out.write(buffer, 0, read);
  }
  return true;
}
 

public void save(@NonNull MultiProfile profile) throws IOException, JSONException {
    File file = new File(profilesPath, profile.id + ".profile");
    try (OutputStream out = new FileOutputStream(file)) {
        out.write(profile.toJson().toString().getBytes());
        out.flush();
    }
}
 

@Override
public void writeTo(DatasetConfig dataset, Class<?> type, Type genericType, Annotation[] annotations,
    MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
    throws IOException, WebApplicationException {

  List<ViewFieldType> viewFieldTypes = ViewFieldsHelper.getViewFields(dataset);

  ImmutableListMultimap<QlikFieldType, ViewFieldType> mapping = FluentIterable.from(viewFieldTypes).index(FIELD_TO_QLIKTYPE);

  DatasetPath datasetPath = new DatasetPath(dataset.getFullPathList());

  // qlik doesn't like certain characters as an identifier, so lets remove them
  String sanitizedDatasetName = dataset.getName().replaceAll("["+ Pattern.quote("/[email protected] *-=+{}<>,~")+"]+", "_");

  try (PrintWriter pw = new PrintWriter(entityStream)) {
    pw.println("SET DirectIdentifierQuoteChar='" + QUOTE + "';");
    pw.println();
    pw.println("LIB CONNECT TO 'Dremio';");
    pw.println();
    // Create a resident load so that data can be referenced later
    pw.format("%s: DIRECT QUERY\n", sanitizedDatasetName);
    for(Map.Entry<QlikFieldType, Collection<ViewFieldType>> entry: mapping.asMap().entrySet()) {
      writeFields(pw, entry.getKey().name(), entry.getValue());
    }

    /* Qlik supports paths with more than 2 components ("foo"."bar"."baz"."boo"), but each individual path segment
     * must be quoted to work with Dremio.  SqlUtils.quoteIdentifier will only quote when needed, so we do another
     * pass to ensure they are quoted. */
    final List<String> quotedPathComponents = Lists.newArrayList();
    for (final String component : dataset.getFullPathList()) {
      String quoted = SqlUtils.quoteIdentifier(component);
      if (!quoted.startsWith(String.valueOf(SqlUtils.QUOTE)) || !quoted.endsWith(String.valueOf(SqlUtils.QUOTE))) {
        quoted = quoteString(quoted);
      }
      quotedPathComponents.add(quoted);
    }

    pw.format("  FROM %1$s;\n", Joiner.on('.').join(quotedPathComponents));
  }
}
 

/**
 * engineStore currently is a No-op.
 * Entries are stored to the token during engineSetEntry
 *
 * @param stream this must be <code>null</code>
 * @param password this must be <code>null</code>
 */
public synchronized void engineStore(OutputStream stream, char[] password)
    throws IOException, NoSuchAlgorithmException, CertificateException {
    token.ensureValid();
    if (stream != null && !token.config.getKeyStoreCompatibilityMode()) {
        throw new IOException("output stream must be null");
    }

    if (password != null && !token.config.getKeyStoreCompatibilityMode()) {
        throw new IOException("password must be null");
    }
}
 

/**
 * Unpack matching files from a jar. Entries inside the jar that do
 * not match the given pattern will be skipped.
 *
 * @param jarFile the .jar file to unpack
 * @param toDir the destination directory into which to unpack the jar
 * @param unpackRegex the pattern to match jar entries against
 */
public static void unJar(File jarFile, File toDir, Pattern unpackRegex)
  throws IOException {
  JarFile jar = new JarFile(jarFile);
  try {
    Enumeration<JarEntry> entries = jar.entries();
    while (entries.hasMoreElements()) {
      final JarEntry entry = entries.nextElement();
      if (!entry.isDirectory() &&
          unpackRegex.matcher(entry.getName()).matches()) {
        InputStream in = jar.getInputStream(entry);
        try {
          File file = new File(toDir, entry.getName());
          ensureDirectory(file.getParentFile());
          OutputStream out = new FileOutputStream(file);
          try {
            IOUtils.copyBytes(in, out, 8192);
          } finally {
            out.close();
          }
        } finally {
          in.close();
        }
      }
    }
  } finally {
    jar.close();
  }
}
 

void Write(OutputStream output) throws IOException {
	BitUtils.WriteWord(output, localScreenWidth_);
	BitUtils.WriteWord(output, localScreenHeight_);
	output.write(byte_);
	output.write(backgroundColorIndex_);
	output.write(pixelAspectRatio_);
}
 

private void writeSignoff(OutputStream output, ImapSession session) {
    try {
        output.write(MAILBOX_DELETED_SIGNOFF);
    } catch (IOException e) {
        LOGGER.warn("Failed to write signoff");
        LOGGER.debug("Failed to write signoff:", e);
    }
}