Editing Troubleshooting of HTTP errors in Mandarin

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HTTP status code

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== 400 Bad Request ==

Root cause of 400 Bad Request. HTTP Error 400. The request is badly formed.
* "the server cannot or will not process the request due to something that is perceived to be a client error (for example, malformed request syntax, invalid request message framing, or deceptive request routing)"<ref>[https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400 400 Bad Request - HTTP | MDN]</ref>

Possibile solution:
* Modify the request headers

== 403 Forbidden Error ==

[[How to fix the 403 forbidden error]]

== 404 File Not Found ==
解決方法：檢查存取的連結是否正確，詳見 [[404 Not Found | 找不到網頁的可能解決方法]]

== 405 Method Not Allowed Error ==
解決方法：檢查存取的文件或資源支援呼叫使用的 HTTP protocol <ref>[https://dotblogs.com.tw/cotton/2018/03/01/132336 使用Http Post呼叫api卻收到405 method not allowed | 攻城獅的學習筆記 - 點部落]</ref>，例如限制使用 POST ，卻使用 GET 存取。

== 414 Request-URI Too Large ==
解決方法：請求協議改用 POST 而不是 GET<ref>[https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/414 414 URI Too Long - HTTP | MDN]</ref>

== 415 Unsupported Media Type ==

解決方法：「於請求中設置的 {{kbd | key=Content-Type}} 或 {{kbd | key=Content-Encoding}} 或對資料的直接訪問」。參考資料：[https://developer.mozilla.org/zh-TW/docs/Web/HTTP/Status/415 415 Unsupported Media Type - HTTP | MDN]

例如：RESTful API 遇到該錯誤，可能解決方式是 HTTP Headers 加入
<pre>
Content-Type: application/json
</pre>

== 429 Too Many Requests ==
原因：
* 太頻繁存取網站資源

解決方法：
* 調整存取頻率
* 如果是存取網路服務 API，請閱讀文件了解 API 本身的存取頻率限制 (Rate Limits)

參考資料
* [https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/429 429 Too Many Requests - HTTP | MDN]

== 502 Bad Gateway ==
原因：
* 因為是網路設備間發生錯誤，使用者並無法直接處理<ref>[https://hostingpill.com/zh-TW/502%E9%8C%AF%E8%AA%A4%E7%9A%84%E7%B6%B2%E9%97%9C/ 什麼是502 Bad Gateway錯誤以及如何解決（輕鬆修復指南）]</ref>。

解決方法：
* [https://zh.wikipedia.org/zh-tw/Help:%E7%BB%95%E8%BF%87%E6%B5%8F%E8%A7%88%E5%99%A8%E7%BC%93%E5%AD%98 繞過瀏覽器快取]，瀏覽器重新整理頁面
* 過一陣子再重新連線

參考資料
* [https://developer.mozilla.org/zh-TW/docs/Web/HTTP/Status/502 502 Bad Gateway - HTTP | MDN]

== Error 1020: Access Denied ==
* [https://www.affde.com/zh-TW/error-1020-access-denied.html 了解如何解決錯誤 1020 訪問被拒絕以使您的網站重新上線 - Affde營銷]

<pre>
Content-Type: application/json
</pre>

: https://http.cat/200.jpg
: From [https://http.cat/ HTTP Cats]

Related websites
* [https://httpstatusdogs.com/ HTTP Status Dogs]

== 其他可能原因 ==
* CDN ([https://en.wikipedia.org/wiki/Content_delivery_network Content delivery network])

== Related pages ==

* [[Troubleshooting of curl errors]]
* [[Test connectivity for the web service]]

== References ==

<references />

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[[Category: Web server]] [[Category:Programming]] [[Category:Web scraping]]