public class BodyReaderHttpServletRequestWrapper extends HttpServletRequestWrapper {private final byte[] body;public BodyReaderHttpServletRequestWrapper(HttpServletRequest request) throws IOException {super(request);body =  getBodyString(request).getBytes(Charset.forName("UTF-8"));}@Overridepublic BufferedReader getReader() throws IOException {return new BufferedReader(new InputStreamReader(getInputStream()));}@Overridepublic ServletInputStream getInputStream() throws IOException {final ByteArrayInputStream bais = new ByteArrayInputStream(body);return new ServletInputStream() {@Overridepublic int read() throws IOException {return bais.read();}@Overridepublic boolean isFinished() {return false;}@Overridepublic boolean isReady() {return false;}@Overridepublic void setReadListener(ReadListener readListener) {}};}public static String getBodyString(ServletRequest request) {try {return StreamUtil.readText(request.getInputStream());} catch (IOException e1) {throw ReqErrCodes.CUSTOM_PROMPT.exception("流内容解析失败");}}
}

@Order(1)
@WebFilter(filterName = "checkSignFilter", urlPatterns = "/*")
public class CheckSignFilter implements Filter {@Overridepublic void init(FilterConfig filterConfig) throws ServletException {}@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {System.out.println("CheckSignFilter");HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;ServletRequest requestWrapper = new BodyReaderHttpServletRequestWrapper(httpRequest);String str = BodyReaderHttpServletRequestWrapper.getBodyString(requestWrapper);HttpServletRequest request = null;if(servletRequest instanceof HttpServletRequest){request = (HttpServletRequest)servletRequest;}String md5code = request.getHeader("MD5Code");String MD5ecode = MD5.getMessageDigest(str);if(!md5code.equals(MD5ecode)){// TODO}filterChain.doFilter(requestWrapper, servletResponse);}@Overridepublic void destroy() {}
}