动态遍历接收的参数

    /**
     * 动态遍历获取所有收到的参数,此步非常关键,因为以后可能会加字段,动态获取可以兼容由于加字段而引起的签名异常
     *
     * @param request
     * @return
     */
    private TreeMap<String, String> getParams(HttpServletRequest request) {
        TreeMap<String, String> map = new TreeMap<String, String>();
        Map reqMap = request.getParameterMap();
        for (Object key : reqMap.keySet()) {
            String value = ((String[]) reqMap.get(key))[0];
            System.out.println(key + ";" + value);
            map.put(key.toString(), value);
        }
        return map;
    }