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//Read request input
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
InputStream requestInput = request.getInputStream();
byte[] temp = new byte[4086];
int n;
while ( (n = requestInput.read(temp, 0, temp.length)) >= 0) {
buffer.write(temp, 0, n);
}
//Discard buffer to limit memory usage
final byte[] bytes = buffer.toByteArray();
buffer = null;
HttpServletRequestWrapper requestWrapper = new HttpServletRequestWrapper(request) {
InputStream inputStream = null;
BufferedReader reader = null;
public synchronized InputStream getInputStream() {
if (reader != null) throw new IllegalStateException("Reader was already opened");
if (inputStream == null) {
inputStream = new ByteArrayInputStream(bytes);
}
return inputStream;
}
public synchronized BufferedReader getReader() {
if (inputStream != null) throw new IllegalStateException("InputStream was already opened");
if (reader == null) {
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
String encoding = getCharacterEncoding();
InputStreamReader isr;
if (encoding != null) {
isr = new InputStreamReader(bais, encoding);
}
else {
//See specification (Servlet | HTTP) for default encoding
isr = new InputStreamReader(bais);
}
reader = new BufferedReader(isr);
}
return reader;
}
}
chain.doFilter(requestWrapper, response); |
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