public class AuthenticationRequestWrapper extends HttpServletRequestWrapper {
	private static final Logger logger = LoggerFactory.getLogger(AuthenticationRequestWrapper.class);
	//post请求参数
    private final String payload;
    
    public AuthenticationRequestWrapper (HttpServletRequest request) throws AuthenticationException {
        super(request);
        // read the original payload into the payload variable
        StringBuilder stringBuilder = new StringBuilder();
        BufferedReader bufferedReader = null;
        try {
            // read the payload into the StringBuilder
            InputStream inputStream = request.getInputStream();
            if (inputStream != null) {
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                char[] charBuffer = new char[128];
                int bytesRead = -1;
                while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
                    stringBuilder.append(charBuffer, 0, bytesRead);
                }
            } else {
                // make an empty string since there is no payload
                stringBuilder.append("");
            }
        } catch (IOException ex) {
        	logger.error("Error reading the request payload", ex);
            throw new AuthenticationException("Error reading the request payload", ex);
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (IOException iox) {
                    // ignore
                }
            }
        }
        payload = stringBuilder.toString();
    }
 
    @Override
    public ServletInputStream getInputStream () throws IOException {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(payload.getBytes());
        ServletInputStream inputStream = new ServletInputStream() {
            public int read () 
                throws IOException {
                return byteArrayInputStream.read();
            }
			@Override
			public boolean isFinished() {
				
				return false;
			}
			@Override
			public boolean isReady() {
				
				return false;
			}
			@Override
			public void setReadListener(ReadListener readListener) {
			}
        };
        return inputStream;
    }
    public String getPayload() {
        return payload;
    }
}

private void checkToken(HttpServletRequest req, HttpServletResponse resp, FilterChain filterChain)
			throws IOException, ServletException, AuthenticationException {
		AuthenticationRequestWrapper request = new AuthenticationRequestWrapper((HttpServletRequest) req);
	    HttpServletResponse response = (HttpServletResponse) resp;
	    doFilter(request, response, filterChain);
}