/**
   * @throws Exception
   *     <p>Description:解密URL请求的参数<br>
   * @author 胡建盼
   * @version 0.1 2014年10月15日
   * @param map void
   * @throws
   */
  public static Map<String, String> buildDecryptionParameter(
      Map<String, String> map, String askMode, String timestamp) throws Exception {
    Map<String, String> returnMap = new TreeMap<String, String>();
    StringBuilder paramsUncoded = new StringBuilder(map.size() * 16);
    StringBuilder paramsDecoded = new StringBuilder(map.size() * 16);
    returnMap.put("timestamp", timestamp);
    for (Map.Entry<String, String> entry : map.entrySet()) {
      String key = entry.getKey();
      // sign参数放在最后
      if (!"sign".equals(key) && !"timestamp".equals(key)) {
        String value = null;
        if (TZJConstants.GET_URL.equals(askMode)) { // GET 请求
          value =
              DES3.decryptModeTzj(
                  new String(((entry.getValue()).getBytes(EncapUrlParameter.UTF_8_CHARSET))),
                  timestamp);
        } else if (TZJConstants.POST_URL.equals(askMode)) {
          value =
              DES3.decryptModeTzj(
                  new String((entry.getValue().getBytes(EncapUrlParameter.UTF_8_CHARSET))),
                  timestamp);
        }

        paramsUncoded.append(key).append("=").append(value).append("&");

        paramsDecoded.append(key).append("=").append(value).append("&");
        returnMap.put(key, value);
      }
    }
    /** 计算MD5值 */
    String src =
        new String(
            paramsUncoded
                .toString()
                .substring(0, paramsUncoded.toString().length() - 1)
                .getBytes(UTF_8_CHARSET),
            UTF_8_CHARSET);
    String paramDM5 = EncryptMD5.toMD5(src);
    paramsDecoded.append("sign").append("=").append(paramDM5);

    // 校验MD5值是否正确
    if (paramDM5.equals(map.get("sign"))) {
      returnMap.put("sign", paramDM5);

    } else {
      returnMap.put("sign", null);
    }
    return returnMap;
  }
  /**
   * Description:构造URL请求的加密参数<br>
   *
   * @author 胡建盼
   * @version 0.1 2014年10月15日
   * @param map
   * @return
   * @throws Exception String
   */
  public static String buildEncryptParameter(
      Map<String, String> map, String askMode, String timestamp) throws Exception {

    StringBuilder paramsUncoded = new StringBuilder(map.size() * 16);
    StringBuilder paramsEncoded = new StringBuilder(map.size() * 16);
    for (Map.Entry<String, String> entry : map.entrySet()) {
      // sign参数放在最后
      if (!"sign".equals(entry.getKey()) && !"timestamp".equals(entry.getKey())) {
        paramsUncoded.append(entry.getKey()).append("=").append(entry.getValue()).append("&");

        if (TZJConstants.GET_URL.equals(askMode)) { // GET 请求
          paramsEncoded
              .append(entry.getKey())
              .append("=")
              //
              .append(
                  URLEncoder.encode(
                      new String(
                          (DES3.encryptModeTzj(entry.getValue(), timestamp)
                              .getBytes(EncapUrlParameter.UTF_8_CHARSET))),
                      EncapUrlParameter.UTF_8_CHARSET))
              .append("&");
        } else if (TZJConstants.POST_URL.equals(askMode)) { // POST 请求
          paramsEncoded
              .append(entry.getKey())
              .append("=")
              .append(
                  new String(
                      (DES3.encryptModeTzj(entry.getValue(), timestamp)
                          .getBytes(EncapUrlParameter.UTF_8_CHARSET))))
              .append("&");
        }
      }
    }
    final String substring =
        new String(
            paramsUncoded
                .toString()
                .substring(0, paramsUncoded.toString().length() - 1)
                .getBytes(UTF_8_CHARSET),
            UTF_8_CHARSET);
    paramsEncoded.append("sign").append("=").append(EncryptMD5.toMD5(substring));
    paramsEncoded.append("timestamp").append("=").append(timestamp);
    System.out.println(paramsEncoded.toString());
    return paramsEncoded.toString();
  }