409 Conflict

 HTTP 409 Conflict 表示請求與伺服器目前狀態衝突

衝突通常發生於 PUT 請求。如上傳一個已經有舊版本存在於伺服器的檔案而導致版本控制衝突時，會回復一個 409 錯誤。

狀態

409 Conflict

規範

Specification Title
RFC 7231, section 6.5.8: 409 Conflict Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

參見

相關主題
  1. HTTP
  2. Guides:
  3. Resources and URIs
    1. Identifying resources on the Web
    2. Data URIs
    3. Introduction to MIME Types
    4. Complete list of MIME Types
    5. Choosing between www and non-www URLs
  4. HTTP guide
    1. Basics of HTTP
    2. Overview of HTTP
    3. Evolution of HTTP
    4. HTTP Messages
    5. A typical HTTP session
    6. Connection management in HTTP/1.x
    7. Protocol upgrade mechanism
  5. HTTP security
    1. Content Security Policy (CSP)
    2. HTTP Public Key Pinning (HPKP)
    3. HTTP Strict Transport Security (HSTS)
    4. Cookie security
    5. X-Content-Type-Options
    6. X-Frame-Options
    7. X-XSS-Protection
    8. Mozilla web security guidelines
    9. Mozilla Observatory
  6. HTTP access control (CORS)
  7. HTTP authentication
  8. HTTP caching
  9. HTTP compression
  10. HTTP conditional requests
  11. HTTP content negotiation
  12. HTTP cookies
  13. HTTP range requests
  14. HTTP redirects
  15. HTTP specifications
  16. Feature policy
  17. References:
  18. HTTP headers
    1. Accept [Translate]
    2. Accept-Charset [Translate]
    3. Accept-Encoding [Translate]
    4. Accept-Language [Translate]
    5. Accept-Patch [Translate]
    6. Accept-Ranges [Translate]
    7. Access-Control-Allow-Credentials [Translate]
    8. Access-Control-Allow-Headers [Translate]
    9. Access-Control-Allow-Methods [Translate]
    10. Access-Control-Allow-Origin [Translate]
    11. Access-Control-Expose-Headers [Translate]
    12. Access-Control-Max-Age [Translate]
    13. Access-Control-Request-Headers [Translate]
    14. Access-Control-Request-Method [Translate]
    15. Age [Translate]
    16. Allow [Translate]
    17. Alt-Svc [Translate]
    18. Authorization [Translate]
    19. Cache-Control [Translate]
    20. Clear-Site-Data [Translate]
    21. Connection [Translate]
    22. Content-Disposition [Translate]
    23. Content-Encoding [Translate]
    24. Content-Language [Translate]
    25. Content-Length [Translate]
    26. Content-Location [Translate]
    27. Content-Range [Translate]
    28. Content-Security-Policy [Translate]
    29. Content-Security-Policy-Report-Only [Translate]
    30. Content-Type [Translate]
    31. Cookie [Translate]
    32. Cookie2 [Translate]
    33. Cross-Origin-Resource-Policy [Translate]
    34. DNT
    35. Date [Translate]
    36. ETag [Translate]
    37. Early-Data [Translate]
    38. Expect [Translate]
    39. Expect-CT [Translate]
    40. Expires [Translate]
    41. Feature-Policy [Translate]
    42. Forwarded [Translate]
    43. From [Translate]
    44. Host [Translate]
    45. If-Match [Translate]
    46. If-Modified-Since [Translate]
    47. If-None-Match [Translate]
    48. If-Range [Translate]
    49. If-Unmodified-Since [Translate]
    50. Index [Translate]
    51. Keep-Alive [Translate]
    52. Large-Allocation [Translate]
    53. Last-Modified [Translate]
    54. Link [Translate]
    55. Location [Translate]
    56. Origin [Translate]
    57. Pragma [Translate]
    58. Proxy-Authenticate [Translate]
    59. Proxy-Authorization [Translate]
    60. Public-Key-Pins [Translate]
    61. Public-Key-Pins-Report-Only [Translate]
    62. Range [Translate]
    63. Referer [Translate]
    64. Referrer-Policy [Translate]
    65. Retry-After [Translate]
    66. Save-Data [Translate]
    67. Sec-WebSocket-Accept [Translate]
    68. Server
    69. Server-Timing [Translate]
    70. Set-Cookie [Translate]
    71. Set-Cookie2 [Translate]
    72. SourceMap [Translate]
    73. Strict-Transport-Security [Translate]
    74. TE [Translate]
    75. Timing-Allow-Origin [Translate]
    76. Tk [Translate]
    77. Trailer [Translate]
    78. Transfer-Encoding [Translate]
    79. Upgrade-Insecure-Requests [Translate]
    80. 用戶代理
    81. Vary [Translate]
    82. Via [Translate]
    83. WWW-Authenticate [Translate]
    84. Warning [Translate]
    85. X-Content-Type-Options [Translate]
    86. X-DNS-Prefetch-Control [Translate]
    87. X-Forwarded-For
    88. X-Forwarded-Host [Translate]
    89. X-Forwarded-Proto [Translate]
    90. X-Frame-Options 回應標頭
    91. X-XSS-Protection [Translate]
  19. HTTP request methods
    1. CONNECT
    2. DELETE [Translate]
    3. GET
    4. HEAD [Translate]
    5. OPTIONS [Translate]
    6. PATCH [Translate]
    7. POST
    8. PUT [Translate]
    9. TRACE [Translate]
  20. HTTP response status codes
    1. 100 Continue
    2. 101 Switching Protocols
    3. 103 Early Hints [Translate]
    4. 200 OK
    5. 201 Created
    6. 202 Accepted
    7. 203 Non-Authoritative Information
    8. 204 No Content
    9. 205 Reset Content
    10. 206 Partial Content
    11. 300 Multiple Choices
    12. 301 Moved Permanently
    13. 302 Found [Translate]
    14. 303 See Other [Translate]
    15. 304 Not Modified [Translate]
    16. 307 Temporary Redirect [Translate]
    17. 308 Permanent Redirect [Translate]
    18. 400 Bad Request [Translate]
    19. 401 Unauthorized [Translate]
    20. 402 Payment Required [Translate]
    21. 403 Forbidden
    22. 404 Not Found
    23. 405 Method Not Allowed [Translate]
    24. 406 Not Acceptable [Translate]
    25. 407 Proxy Authentication Required [Translate]
    26. 408 Request Timeout [Translate]
    27. 409 Conflict [Translate]
    28. 410 Gone [Translate]
    29. 411 Length Required [Translate]
    30. 412 Precondition Failed [Translate]
    31. 413 Payload Too Large [Translate]
    32. 414 URI Too Long [Translate]
    33. 415 Unsupported Media Type [Translate]
    34. 416 Range Not Satisfiable [Translate]
    35. 417 Expectation Failed [Translate]
    36. 418 I'm a teapot
    37. 422 Unprocessable Entity [Translate]
    38. 425 Too Early [Translate]
    39. 426 Upgrade Required [Translate]
    40. 428 Precondition Required [Translate]
    41. 429 Too Many Requests [Translate]
    42. 431 Request Header Fields Too Large [Translate]
    43. 451 Unavailable For Legal Reasons
    44. 500 Internal Server Error
    45. 501 Not Implemented [Translate]
    46. 502 Bad Gateway [Translate]
    47. 503 Service Unavailable [Translate]
    48. 504 Gateway Timeout [Translate]
    49. 505 HTTP Version Not Supported [Translate]
    50. 511 Network Authentication Required [Translate]
  21. CSP directives
    1. CSP: base-uri [Translate]
    2. CSP: block-all-mixed-content [Translate]
    3. CSP: child-src [Translate]
    4. CSP: connect-src [Translate]
    5. CSP: default-src [Translate]
    6. CSP: font-src [Translate]
    7. CSP: form-action [Translate]
    8. CSP: frame-ancestors [Translate]
    9. CSP: frame-src [Translate]
    10. CSP: img-src [Translate]
    11. CSP: manifest-src [Translate]
    12. CSP: media-src [Translate]
    13. CSP: object-src [Translate]
    14. CSP: plugin-types [Translate]
    15. CSP: referrer [Translate]
    16. CSP: report-uri [Translate]
    17. CSP: require-sri-for [Translate]
    18. CSP: sandbox [Translate]
    19. CSP: script-src [Translate]
    20. CSP: style-src [Translate]
    21. CSP: upgrade-insecure-requests [Translate]
    22. CSP: worker-src [Translate]
    23. report-to [Translate]
  22. CORS errors
    1. Reason: CORS disabled [Translate]
    2. Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz' [Translate]
    3. 原因：缺少 CORS 標頭 'Access-Control-Allow-Origin'
    4. Reason: CORS header ‘Origin’ cannot be added [Translate]
    5. Reason: CORS preflight channel did not succeed [Translate]
    6. 原因：CORS 請求未成功
    7. Reason: CORS request external redirect not allowed [Translate]
    8. Reason: CORS request not HTTP [Translate]
    9. 原因：CORS 'Access-Control-Allow-Origin' 設定為「*」時不支援使用帳號密碼
    10. Reason: Did not find method in CORS header ‘Access-Control-Allow-Methods’ [Translate]
    11. Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed [Translate]
    12. Reason: expected ‘true’ in CORS header ‘Access-Control-Allow-Credentials’ [Translate]
    13. Reason: invalid token ‘xyz’ in CORS header ‘Access-Control-Allow-Headers’ [Translate]
    14. Reason: invalid token ‘xyz’ in CORS header ‘Access-Control-Allow-Methods’ [Translate]
    15. Reason: missing token ‘xyz’ in CORS header ‘Access-Control-Allow-Headers’ from CORS preflight channel [Translate]
  23. Feature-Policy directives
    1. Feature-Policy: accelerometer [Translate]
    2. Feature-Policy: ambient-light-sensor [Translate]
    3. Feature-Policy: autoplay [Translate]
    4. Feature-Policy: camera [Translate]
    5. Feature-Policy: display-capture [Translate]
    6. Feature-Policy: document-domain [Translate]
    7. Feature-Policy: encrypted-media [Translate]
    8. Feature-Policy: fullscreen [Translate]
    9. Feature-Policy: geolocation [Translate]
    10. Feature-Policy: gyroscope [Translate]
    11. Feature-Policy: layout-animations [Translate]
    12. Feature-Policy: legacy-image-formats [Translate]
    13. Feature-Policy: magnetometer [Translate]
    14. Feature-Policy: microphone [Translate]
    15. Feature-Policy: midi [Translate]
    16. Feature-Policy: oversized-images [Translate]
    17. Feature-Policy: payment [Translate]
    18. Feature-Policy: picture-in-picture [Translate]
    19. Feature-Policy: speaker [Translate]
    20. Feature-Policy: sync-xhr [Translate]
    21. Feature-Policy: unoptimized-images [Translate]
    22. Feature-Policy: unsized-media [Translate]
    23. Feature-Policy: usb [Translate]
    24. Feature-Policy: vibrate [Translate]
    25. Feature-Policy: vr [Translate]
    26. Feature-Policy: wake-lock [Translate]