摘要：
http_status_bad_request (400) the request could not be processed by the server due to invalid syntax. 因为语法不能被服务器处理 http_status_denied (401) the requested resource requires user authentication. 请求资源命令必须被验证（拒绝访问） http_status_payment_req (402) not currently implemented in the http protocol. 没有完全实现http协 阅读全文
