常见的http返回代码

　　CONTINUE(100, ＂Continue＂),     SWITCHING_PROTOCOLS(101, ＂Switching Protocols＂),     PROCESSING(102, ＂Processing＂),     CHECKPOINT(103, ＂Checkpoint＂),     OK(200, ＂OK＂),     CREATED(201, ＂Created＂),     ACCEPTED(202, ＂Accepted＂),     NON_AUTHORITATIVE_INFORMATION(203, ＂Non-Authoritative Information＂),     NO_CONTENT(204, ＂No Content＂),     RESET_CONTENT(205, ＂Reset Content＂),     PARTIAL_CONTENT(206, ＂Partial Content＂),     MULTI_STATUS(207, ＂Multi-Status＂),     ALREADY_REPORTED(208, ＂Already Reported＂),     IM_USED(226, ＂IM Used＂),     MULTIPLE_CHOICES(300, ＂Multiple Choices＂),     MOVED_PERMANENTLY(301, ＂Moved Permanently＂),     FOUND(302, ＂Found＂),     /** @deprecated */     @Deprecated     MOVED_TEMPORARILY(302, ＂Moved Temporarily＂),     SEE_OTHER(303, ＂See Other＂),     NOT_MODIFIED(304, ＂Not Modified＂),     /** @deprecated */     @Deprecated     USE_PROXY(305, ＂Use Proxy＂),     TEMPORARY_REDIRECT(307, ＂Temporary Redirect＂),     PERMANENT_REDIRECT(308, ＂Permanent Redirect＂),     BAD_REQUEST(400, ＂Bad Request＂),     UNAUTHORIZED(401, ＂Unauthorized＂),     PAYMENT_REQUIRED(402, ＂Payment Required＂),     FORBIDDEN(403, ＂Forbidden＂),     NOT_FOUND(404, ＂Not Found＂),     METHOD_NOT_ALLOWED(405, ＂Method Not Allowed＂),     NOT_ACCEPTABLE(406, ＂Not Acceptable＂),     PROXY_AUTHENTICATION_REQUIRED(407, ＂Proxy Authentication Required＂),     REQUEST_TIMEOUT(408, ＂Request Timeout＂),     CONFLICT(409, ＂Conflict＂),     GONE(410, ＂Gone＂),     LENGTH_REQUIRED(411, ＂Length Required＂),     PRECONDITION_FAILED(412, ＂Precondition Failed＂),     PAYLOAD_TOO_LARGE(413, ＂Payload Too Large＂),     /** @deprecated */     @Deprecated     REQUEST_ENTITY_TOO_LARGE(413, ＂Request Entity Too Large＂),     URI_TOO_LONG(414, ＂URI Too Long＂),     /** @deprecated */     @Deprecated     REQUEST_URI_TOO_LONG(414, ＂Request-URI Too Long＂),     UNSUPPORTED_MEDIA_TYPE(415, ＂Unsupported Media Type＂),     REQUESTED_RANGE_NOT_SATISFIABLE(416, ＂Requested range not satisfiable＂),     EXPECTATION_FAILED(417, ＂Expectation Failed＂),     I_AM_A_TEAPOT(418, ＂I＂m a teapot＂),     /** @deprecated */     @Deprecated     INSUFFICIENT_SPACE_ON_RESOURCE(419, ＂Insufficient Space On Resource＂),     /** @deprecated */     @Deprecated     METHOD_FAILURE(420, ＂Method Failure＂),     /** @deprecated */     @Deprecated     DESTINATION_LOCKED(421, ＂Destination Locked＂),     UNPROCESSABLE_ENTITY(422, ＂Unprocessable Entity＂),     LOCKED(423, ＂Locked＂),     FAILED_DEPENDENCY(424, ＂Failed Dependency＂),     TOO_EARLY(425, ＂Too Early＂),     UPGRADE_REQUIRED(426, ＂Upgrade Required＂),     PRECONDITION_REQUIRED(428, ＂Precondition Required＂),     TOO_MANY_REQUESTS(429, ＂Too Many Requests＂),     REQUEST_HEADER_FIELDS_TOO_LARGE(431, ＂Request Header Fields Too Large＂),     UNAVAILABLE_FOR_LEGAL_REASONS(451, ＂Unavailable For Legal Reasons＂),     INTERNAL_SERVER_ERROR(500, ＂Internal Server Error＂),     NOT_IMPLEMENTED(501, ＂Not Implemented＂),     BAD_GATEWAY(502, ＂Bad Gateway＂),     SERVICE_UNAVAILABLE(503, ＂Service Unavailable＂),     GATEWAY_TIMEOUT(504, ＂Gateway Timeout＂),     HTTP_VERSION_NOT_SUPPORTED(505, ＂HTTP Version not supported＂),     VARIANT_ALSO_NEGOTIATES(506, ＂Variant Also Negotiates＂),     INSUFFICIENT_STORAGE(507, ＂Insufficient Storage＂),     LOOP_DETECTED(508, ＂Loop Detected＂),     BANDWIDTH_LIMIT_EXCEEDED(509, ＂Bandwidth Limit Exceeded＂),     NOT_EXTENDED(510, ＂Not Extended＂),     NETWORK_AUTHENTICATION_REQUIRED(511, ＂Network Authentication Required＂);