工具类系列-RequestRedirectUtil

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public static ResponseVo redirect(Class<?> controllerClazz, String methodName, Object arg) {

       if (controllerClazz == null || StringUtils.isBlank(methodName)) {
           throw new IllegalArgumentException("Argument invalid ...");
       }

       Method machedMethod = searchMachedMethod(controllerClazz, methodName);

       return doRedirect(controllerClazz, machedMethod, arg);

}

    /**
   * 根据方法名查找第一个匹配的方法对象
   * @param controllerClazz
   * @param methodName
   * @return
   */
   private static Method searchMachedMethod(Class<?> controllerClazz, String methodName) {
       Method[] methods = controllerClazz.getDeclaredMethods();
       if (ArrayUtils.isEmpty(methods)) {
           throw new NullPointerException("No method found by: " + methodName);
       }

       for (Method method : methods) {
           if (StringUtils.equals(methodName, method.getName())) {
               return method;
           }
       }

       throw new RuntimeException("No mached method found by: " + methodName);
    }

private static ResponseVo doRedirect(Class<?> controllerClazz, Method method, Object argObject) {
       RequestMapping clazzMapping = controllerClazz.getAnnotation(RequestMapping.class);
       RequestMapping methodMapping = method.getAnnotation(RequestMapping.class);
       if (clazzMapping == null || methodMapping == null) {
           throw new NullPointerException("No @RequestMapping defined for class: " + controllerClazz + " or method: " + method);
       }

       String qualifiedUrl = new StringBuilder(baseUrl)
               .append(clazzMapping.value()[0]).append(methodMapping.value()[0]).toString();
       // choose the 1st RequestMethod definition if more than 1 exists
       String requestMethod = methodMapping.method()[0].name();
       String param = JsonUtil.toString(argObject);

       if (LOGGER.isDebugEnabled()) {
           LOGGER.debug("----- redirect 2 TOF via url: " + qualifiedUrl + ", method: " + requestMethod + ", param: " + param);
       }

       String returnStr =XXX;//请求

       return JsonUtil.toBean(returnStr, ResponseVo.class);
   }

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