HTTP 400 - 请求错误:bad_request
HTTP 406 错误 – 无法接受 (Not acceptable)
422 Unprocessable Entity - 请求格式正确
附：对照表
| Response Class | HTTP Status Code | Symbol |
|---|---|---|
| 消息 | 100 | :continue |
| 101 | :switching_protocols | |
| 102 | :processing | |
| 成功 | 200 | :ok |
| 201 | :created | |
| 202 | :accepted | |
| 203 | :non_authoritative_information | |
| 204 | :no_content | |
| 205 | :reset_content | |
| 206 | :partial_content | |
| 207 | :multi_status | |
| 208 | :already_reported | |
| 226 | :im_used | |
| 重定向 | 300 | :multiple_choices |
| 301 | :moved_permanently | |
| 302 | :found | |
| 303 | :see_other | |
| 304 | :not_modified | |
| 305 | :use_proxy | |
| 306 | :reserved | |
| 307 | :temporary_redirect | |
| 308 | :permanent_redirect | |
| 客户端错误 | 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_timeout | |
| 409 | :conflict | |
| 410 | :gone | |
| 411 | :length_required | |
| 412 | :precondition_failed | |
| 413 | :request_entity_too_large | |
| 414 | :request_uri_too_long | |
| 415 | :unsupported_media_type | |
| 416 | :requested_range_not_satisfiable | |
| 417 | :expectation_failed | |
| 422 | :unprocessable_entity | |
| 423 | :locked | |
| 424 | :failed_dependency | |
| 426 | :upgrade_required | |
| 428 | :precondition_required | |
| 429 | :too_many_requests | |
| 431 | :request_header_fields_too_large | |
| 服务端错误 | 500 | :internal_server_error |
| 501 | :not_implemented | |
| 502 | :bad_gateway | |
| 503 | :service_unavailable | |
| 504 | :gateway_timeout | |
| 505 | :http_version_not_supported | |
| 506 | :variant_also_negotiates | |
| 507 | :insufficient_storage | |
| 508 | :loop_detected | |
| 510 | :not_extended | |
| 511 | :network_authentication_required |