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• 100 "continue"

• 101 "switching protocols"

• 102 "processing"

• 200 "ok"

• 201 "created"

• 202 "accepted"

• 203 "non-authoritative information"

• 204 "no content"

• 205 "reset content"

• 206 "partial content"

• 207 "multi-status"

• 300 "multiple choices"

• 301 "moved permanently"

• 302 "moved temporarily"

• 303 "see other"

• 304 "not modified"

• 305 "use proxy"

• 307 "temporary redirect"

• 400 "bad request"

• 401 "unauthorized"

• 402 "payment required"

• 403 "forbidden"

• 404 "not found"

• 405 "method not allowed"

• 406 "not acceptable"

• 407 "proxy authentication required"

• 408 "request time-out"

• 409 "conflict"

• 410 "gone"

• 411 "length required"

• 412 "precondition failed"

• 413 "request entity too large"

• 414 "request-uri too large"

• 415 "unsupported media type"

• 416 "requested range not satisfiable"

• 417 "expectation failed"

• 418 "i‘m a teapot"

• 422 "unprocessable entity"

• 423 "locked"

• 424 "failed dependency"

• 425 "unordered collection"

• 426 "upgrade required"

• 428 "precondition required"

• 429 "too many requests"

• 431 "request header fields too large"

• 500 "internal server error"

• 501 "not implemented"

• 502 "bad gateway"

• 503 "service unavailable"

• 504 "gateway time-out"

• 505 "http version not supported"

• 506 "variant also negotiates"

• 507 "insufficient storage"

• 509 "bandwidth limit exceeded"

• 510 "not extended"

• 511 "network authentication required"

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原文：http://my.oschina.net/imot/blog/512068