public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
     throws ServletException, IOException {
   String contentType = req.getContentType();
   if (contentType != null && contentType.startsWith(FILTERABLE_CONTENT_TYPE))
     req.setCharacterEncoding(encoding);
   chain.doFilter(req, resp);
 }
    private void processEncrypt(final ServletRequest servletRequest ,final HttpServletRequest httpRequest,final ServletResponse servletResponse,
                          final FilterChain filterChain)throws IOException, ServletException{


        InputStream inputStream = servletRequest.getInputStream();
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byte buf[] = new byte[1024];
        int letti=-1;
        while ((letti = inputStream.read(buf)) > 0){
            byteArrayOutputStream.write(buf, 0, letti);
        }
        final BufferedRequestWrapper bufferedRequest = new BufferedRequestWrapper(httpRequest,doEncrypt(byteArrayOutputStream));

        final HttpServletResponse response = (HttpServletResponse) servletResponse;
        final ByteArrayPrintWriter pw = new ByteArrayPrintWriter();
        HttpServletResponse wrappedResp = new HttpServletResponseWrapper(response) {
            public PrintWriter getWriter() {
                return pw.getWriter();
            }
            public ServletOutputStream getOutputStream() {
                return pw.getStream();
            }
        };

        filterChain.doFilter(bufferedRequest, wrappedResp);


    }
Exemple #3
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 /**
  * Get a parameter from a ServletRequest. Return null if the parameter contains only white spaces.
  */
 public static String getParameter(ServletRequest request, String name) {
   String s = request.getParameter(name);
   if (s == null) {
     return null;
   }
   s = s.trim();
   return s.length() == 0 ? null : s;
 }
  public void service(ServletRequest request, ServletResponse response)
      throws ServletException, IOException {

    // Get print writer.
    PrintWriter pw = response.getWriter();

    // Get enumeration of parameter names.
    Enumeration e = request.getParameterNames();

    // Display parameter names and values.
    while (e.hasMoreElements()) {
      String pname = (String) e.nextElement();
      pw.print(pname + " = ");
      String pvalue = request.getParameter(pname);
      pw.println(pvalue);
    }
    pw.close();
  }
  /**
   * Parses HTTP parameters in an appropriate format and return back map of values to predefined
   * list of names.
   *
   * @param req Request.
   * @return Map of parsed parameters.
   */
  @SuppressWarnings({"unchecked"})
  private Map<String, Object> parameters(ServletRequest req) {
    Map<String, String[]> params = req.getParameterMap();

    if (F.isEmpty(params)) return Collections.emptyMap();

    Map<String, Object> map = U.newHashMap(params.size());

    for (Map.Entry<String, String[]> entry : params.entrySet())
      map.put(entry.getKey(), parameter(entry.getValue()));

    return map;
  }
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
    // session属于http范畴,所以要将ServletRequest转换成httpServletRequest

    try {
      HttpServletRequest req = (HttpServletRequest) request;
      HttpSession session = req.getSession();
      if (session.getAttribute("username") != null) {
        chain.doFilter(request, response);
      } else {
        request.getRequestDispatcher("error.jsp").forward(request, response);
      }
    } catch (RuntimeException e) {
      e.printStackTrace();
    }
  }
  /**
   * @param req Request.
   * @return Command.
   */
  @Nullable
  GridRestCommand command(ServletRequest req) {
    String cmd = req.getParameter("cmd");

    return cmd == null ? null : GridRestCommand.fromKey(cmd.toLowerCase());
  }
  /**
   * Creates REST request.
   *
   * @param cmd Command.
   * @param params Parameters.
   * @return REST request.
   * @throws GridException If creation failed.
   */
  @Nullable
  private GridRestRequest createRequest(
      GridRestCommand cmd, Map<String, Object> params, ServletRequest req) throws GridException {
    GridRestRequest restReq;

    switch (cmd) {
      case CACHE_GET:
      case CACHE_GET_ALL:
      case CACHE_PUT:
      case CACHE_PUT_ALL:
      case CACHE_REMOVE:
      case CACHE_REMOVE_ALL:
      case CACHE_ADD:
      case CACHE_CAS:
      case CACHE_METRICS:
      case CACHE_REPLACE:
      case CACHE_DECREMENT:
      case CACHE_INCREMENT:
      case CACHE_APPEND:
      case CACHE_PREPEND:
        {
          GridRestCacheRequest restReq0 = new GridRestCacheRequest();

          restReq0.cacheName((String) params.get("cacheName"));
          restReq0.key(params.get("key"));
          restReq0.value(params.get("val"));
          restReq0.value2(params.get("val2"));

          Object val1 = params.get("val1");

          if (val1 != null) restReq0.value(val1);

          restReq0.cacheFlags(intValue("cacheFlags", params, 0));
          restReq0.ttl(longValue("exp", params, null));
          restReq0.initial(longValue("init", params, null));
          restReq0.delta(longValue("delta", params, null));

          if (cmd == CACHE_GET_ALL || cmd == CACHE_PUT_ALL || cmd == CACHE_REMOVE_ALL) {
            List<Object> keys = values("k", params);
            List<Object> vals = values("v", params);

            if (keys.size() < vals.size())
              throw new GridException(
                  "Number of keys must be greater or equals to number of values.");

            Map<Object, Object> map = U.newHashMap(keys.size());

            Iterator<Object> keyIt = keys.iterator();
            Iterator<Object> valIt = vals.iterator();

            while (keyIt.hasNext()) map.put(keyIt.next(), valIt.hasNext() ? valIt.next() : null);

            restReq0.values(map);
          }

          restReq = restReq0;

          break;
        }

      case TOPOLOGY:
      case NODE:
        {
          GridRestTopologyRequest restReq0 = new GridRestTopologyRequest();

          restReq0.includeMetrics(Boolean.parseBoolean((String) params.get("mtr")));
          restReq0.includeAttributes(Boolean.parseBoolean((String) params.get("attr")));

          restReq0.nodeIp((String) params.get("ip"));

          restReq0.nodeId(uuidValue("id", params));

          restReq = restReq0;

          break;
        }

      case EXE:
      case RESULT:
      case NOOP:
        {
          GridRestTaskRequest restReq0 = new GridRestTaskRequest();

          restReq0.taskId((String) params.get("id"));
          restReq0.taskName((String) params.get("name"));

          restReq0.params(values("p", params));

          restReq0.async(Boolean.parseBoolean((String) params.get("async")));

          restReq0.timeout(longValue("timeout", params, 0L));

          restReq = restReq0;

          break;
        }

      case LOG:
        {
          GridRestLogRequest restReq0 = new GridRestLogRequest();

          restReq0.path((String) params.get("path"));

          restReq0.from(intValue("from", params, -1));
          restReq0.to(intValue("to", params, -1));

          restReq = restReq0;

          break;
        }

      case VERSION:
        {
          restReq = new GridRestRequest();

          break;
        }

      default:
        throw new GridException("Invalid command: " + cmd);
    }

    restReq.address(new InetSocketAddress(req.getRemoteAddr(), req.getRemotePort()));

    restReq.command(cmd);

    if (params.containsKey("gridgain.login") || params.containsKey("gridgain.password")) {
      GridSecurityCredentials cred =
          new GridSecurityCredentials(
              (String) params.get("gridgain.login"), (String) params.get("gridgain.password"));

      restReq.credentials(cred);
    }

    String clientId = (String) params.get("clientId");

    try {
      if (clientId != null) restReq.clientId(UUID.fromString(clientId));
    } catch (Exception ignored) {
      // Ignore invalid client id. Rest handler will process this logic.
    }

    String destId = (String) params.get("destId");

    try {
      if (destId != null) restReq.destinationId(UUID.fromString(destId));
    } catch (IllegalArgumentException ignored) {
      // Don't fail - try to execute locally.
    }

    String sesTokStr = (String) params.get("sessionToken");

    try {
      if (sesTokStr != null) restReq.sessionToken(U.hexString2ByteArray(sesTokStr));
    } catch (IllegalArgumentException ignored) {
      // Ignore invalid session token.
    }

    return restReq;
  }
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
    if (filterConfig == null) return;
    StringWriter sw = new StringWriter();
    PrintWriter writer = new PrintWriter(sw);
    writer.println(
        (new StringBuilder("Request Received at "))
            .append(new Timestamp(System.currentTimeMillis()))
            .toString());
    writer.println(
        (new StringBuilder(" characterEncoding="))
            .append(request.getCharacterEncoding())
            .toString());
    writer.println(
        (new StringBuilder("     contentLength=")).append(request.getContentLength()).toString());
    writer.println(
        (new StringBuilder("       contentType=")).append(request.getContentType()).toString());
    writer.println(
        (new StringBuilder("            locale=")).append(request.getLocale()).toString());
    writer.print("           locales=");
    Enumeration locales = request.getLocales();
    boolean first = true;
    Locale locale;
    for (; locales.hasMoreElements(); writer.print(locale.toString())) {
      locale = (Locale) locales.nextElement();
      if (first) first = false;
      else writer.print(", ");
    }

    writer.println();
    for (Enumeration names = request.getParameterNames();
        names.hasMoreElements();
        writer.println()) {
      String name = (String) names.nextElement();
      writer.print((new StringBuilder("         parameter=")).append(name).append("=").toString());
      String values[] = request.getParameterValues(name);
      for (int i = 0; i < values.length; i++) {
        if (i > 0) writer.print(", ");
        writer.print(values[i]);
      }
    }

    writer.println(
        (new StringBuilder("          protocol=")).append(request.getProtocol()).toString());
    writer.println(
        (new StringBuilder("        remoteAddr=")).append(request.getRemoteAddr()).toString());
    writer.println(
        (new StringBuilder("        remoteHost=")).append(request.getRemoteHost()).toString());
    writer.println(
        (new StringBuilder("            scheme=")).append(request.getScheme()).toString());
    writer.println(
        (new StringBuilder("        serverName=")).append(request.getServerName()).toString());
    writer.println(
        (new StringBuilder("        serverPort=")).append(request.getServerPort()).toString());
    writer.println(
        (new StringBuilder("          isSecure=")).append(request.isSecure()).toString());
    if (request instanceof HttpServletRequest) {
      writer.println("---------------------------------------------");
      HttpServletRequest hrequest = (HttpServletRequest) request;
      writer.println(
          (new StringBuilder("       contextPath=")).append(hrequest.getContextPath()).toString());
      Cookie cookies[] = hrequest.getCookies();
      if (cookies == null) cookies = new Cookie[0];
      for (int i = 0; i < cookies.length; i++)
        writer.println(
            (new StringBuilder("            cookie="))
                .append(cookies[i].getName())
                .append("=")
                .append(cookies[i].getValue())
                .toString());

      String name;
      String value;
      for (Enumeration names = hrequest.getHeaderNames();
          names.hasMoreElements();
          writer.println(
              (new StringBuilder("            header="))
                  .append(name)
                  .append("=")
                  .append(value)
                  .toString())) {
        name = (String) names.nextElement();
        value = hrequest.getHeader(name);
      }

      writer.println(
          (new StringBuilder("            method=")).append(hrequest.getMethod()).toString());
      writer.println(
          (new StringBuilder("          pathInfo=")).append(hrequest.getPathInfo()).toString());
      writer.println(
          (new StringBuilder("       queryString=")).append(hrequest.getQueryString()).toString());
      writer.println(
          (new StringBuilder("        remoteUser="******"requestedSessionId="))
              .append(hrequest.getRequestedSessionId())
              .toString());
      writer.println(
          (new StringBuilder("        requestURI=")).append(hrequest.getRequestURI()).toString());
      writer.println(
          (new StringBuilder("       servletPath=")).append(hrequest.getServletPath()).toString());
    }
    writer.println("=============================================");
    writer.flush();
    filterConfig.getServletContext().log(sw.getBuffer().toString());
    chain.doFilter(request, response);
  }