HTTP错误代码

图片纯属搞笑，写过http代码仅仅是个头，他的意思都是人赋予的，纠正几个观点，402和“当初制定出402的那帮人是怎么想的，为什么最后没有实现，将来到底有没有一天会实现”是没有关系的，402是业务逻辑返回的代码，一定是由程序员来实现，而不是由指定的那帮人来实现。并不是说payment required就一定要用402，而是402的一般是payment required。程序员可以不实现402，可以花式实现402。你没付费，我可以不让你402，从逻辑上讲，我可以让你403 forbidden，我也可以给你一个302跳转，我也可以给你一个200界面要求充值，这个并不冲突。敲黑板，相比于402，我们更需要关注5XX错误代码。下面是干货：（来源：go包源码，提供了RFC出处）

作者：大舒
链接：https://www.zhihu.com/question/30692393/answer/49099750
来源：知乎
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。

HTTP status codes, defined in RFC 2616.

   StatusContinue           = 100
   StatusSwitchingProtocols = 101

   StatusOK                   = 200
   StatusCreated              = 201
   StatusAccepted             = 202
   StatusNonAuthoritativeInfo = 203
   StatusNoContent            = 204
   StatusResetContent         = 205
   StatusPartialContent       = 206

   StatusMultipleChoices   = 300
   StatusMovedPermanently  = 301
   StatusFound             = 302
   StatusSeeOther          = 303
   StatusNotModified       = 304
   StatusUseProxy          = 305
   StatusTemporaryRedirect = 307

   StatusBadRequest                   = 400
   StatusUnauthorized                 = 401
   StatusPaymentRequired              = 402
   StatusForbidden                    = 403
   StatusNotFound                     = 404
   StatusMethodNotAllowed             = 405
   StatusNotAcceptable                = 406
   StatusProxyAuthRequired            = 407
   StatusRequestTimeout               = 408
   StatusConflict                     = 409
   StatusGone                         = 410
   StatusLengthRequired               = 411
   StatusPreconditionFailed           = 412
   StatusRequestEntityTooLarge        = 413
   StatusRequestURITooLong            = 414
   StatusUnsupportedMediaType         = 415
   StatusRequestedRangeNotSatisfiable = 416
   StatusExpectationFailed            = 417
   StatusTeapot                       = 418

   StatusInternalServerError     = 500
   StatusNotImplemented          = 501
   StatusBadGateway              = 502
   StatusServiceUnavailable      = 503
   StatusGatewayTimeout          = 504
   StatusHTTPVersionNotSupported = 505

// New HTTP status codes from RFC 6585. Not exported yet in Go 1.1.
// See discussion at https://codereview.appspot.com/7678043/
statusPreconditionRequired          = 428
   statusTooManyRequests               = 429
   statusRequestHeaderFieldsTooLarge   = 431

statusNetworkAuthenticationRequired = 511