设计模式

/**
 * 处理页面过来的请求
 * @param req 请求信息
 * @return 请求返回结果
 */
@Override
public String service(String serverName, String methodName, HttpServletRequest req, HttpServletResponse response)
{
    String jsonStr = super.parseRequest(req);
    String serviceUrl = HttpRequestUtils.getRequestServiceUrl(serverName, methodName, StringUtils.EMPTY);
    log.debug("//// 请求URL:{} || 参数:{}", serviceUrl, jsonStr);
    preHandle(req);
    String ret;
    HttpHeaders reqHttpHeaders;
    try
    {
        reqHttpHeaders = getHeaders(req);
        ResponseEntity<String> responseEntity = invokeRestful(serviceUrl, jsonStr, reqHttpHeaders);
        HttpHeaders respHttpHeaders = responseEntity.getHeaders();
        setResponseHeaders(response, respHttpHeaders);
        ret = responseEntity.getBody();
    }
    catch (Exception e)
    {
        log.error("//// 请求URL:{} || 参数:{}", serviceUrl, jsonStr, e);
        throw new DispatchException(ErrorCodeConsts.REQ_SERVER_EXCEPTION, e.getMessage());
    }
    afterCompletion(req);
    // 返回重复提交的值
    ret = setRepeatAct(req, ret);
    log.debug("//// 请求URL:{} || 头信息:{} || 参数:{} || 结果:{} ", serviceUrl, JsonUtils.toJSONString(reqHttpHeaders),
              jsonStr, ret);
    return ret;
}