public static void write(HttpServletResponse response, File file) throws IOException {
if (response instanceof ByteBufferServletResponse) {
ByteBufferServletResponse byteBufferResponse = (ByteBufferServletResponse) response;
ByteBuffer byteBuffer = ByteBuffer.wrap(FileUtil.getBytes(file));
byteBufferResponse.setByteBuffer(byteBuffer);
} else if (response instanceof StringServletResponse) {
StringServletResponse stringResponse = (StringServletResponse) response;
String s = FileUtil.read(file);
stringResponse.setString(s);
} else {
FileInputStream fileInputStream = new FileInputStream(file);
FileChannel fileChannel = fileInputStream.getChannel();
try {
int contentLength = (int) fileChannel.size();
response.setContentLength(contentLength);
response.flushBuffer();
fileChannel.transferTo(0, contentLength, Channels.newChannel(response.getOutputStream()));
} finally {
fileChannel.close();
}
}
}
public static void write(HttpServletResponse response, ByteBuffer byteBuffer) throws IOException {
if (response instanceof ByteBufferServletResponse) {
ByteBufferServletResponse byteBufferResponse = (ByteBufferServletResponse) response;
byteBufferResponse.setByteBuffer(byteBuffer);
} else {
write(response, byteBuffer.array(), byteBuffer.position(), byteBuffer.limit());
}
}
@Override
protected void processFilter(
HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws Exception {
ByteBufferServletResponse byteBufferResponse = new ByteBufferServletResponse(response);
processFilter(ETagFilter.class, request, byteBufferResponse, filterChain);
if (!ETagUtil.processETag(request, response, byteBufferResponse)) {
ServletResponseUtil.write(response, byteBufferResponse.getByteBuffer());
}
}
public static void write(
HttpServletResponse response, byte[] bytes, int offset, int contentLength)
throws IOException {
try {
// LEP-3122
if (!response.isCommitted()) {
// LEP-536
if (contentLength == 0) {
contentLength = bytes.length;
}
response.setContentLength(contentLength);
response.flushBuffer();
if (response instanceof ByteBufferServletResponse) {
ByteBufferServletResponse byteBufferResponse = (ByteBufferServletResponse) response;
byteBufferResponse.setByteBuffer(ByteBuffer.wrap(bytes, offset, contentLength));
} else {
ServletOutputStream servletOutputStream = response.getOutputStream();
servletOutputStream.write(bytes, offset, contentLength);
}
}
} catch (IOException ioe) {
if (ioe instanceof SocketException
|| ioe.getClass().getName().equals(_CLIENT_ABORT_EXCEPTION)) {
if (_log.isWarnEnabled()) {
_log.warn(ioe);
}
} else {
throw ioe;
}
}
}
