返回状态码

? 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"