POST - [ HTTP 中文开发手册 ] - 在线原生手册

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目录搜索

Guides Access control CORS Authentication Browser detection using the user agent Caching Caching FAQ Compression Conditional requests Connection management in HTTP 1.x Content negotiation Content negotiation: List of default Accept values Cookies CSP Messages Overview Protocol upgrade mechanism Proxy servers and tunneling Proxy servers and tunneling: Proxy Auto-Configuration (PAC) file Public Key Pinning Range requests Redirections Resources and specifications Resources and URIs Response codes Server-Side Access Control Session Guides: Basics Basics of HTTP Choosing between www and non-www URLs Data URIs Evolution of HTTP Identifying resources on the Web MIME Types MIME types: Complete list of MIME types CSP Content-Security-Policy Content-Security-Policy-Report-Only CSP: base-uri CSP: block-all-mixed-content CSP: child-src CSP: connect-src CSP: default-src CSP: font-src CSP: form-action CSP: frame-ancestors CSP: frame-src CSP: img-src CSP: manifest-src CSP: media-src CSP: object-src CSP: plugin-types CSP: referrer CSP: report-uri CSP: require-sri-for CSP: sandbox CSP: script-src CSP: style-src CSP: upgrade-insecure-requests CSP: worker-src Headers Accept Accept-Charset Accept-Encoding Accept-Language Accept-Ranges Access-Control-Allow-Credentials Access-Control-Allow-Headers Access-Control-Allow-Methods Access-Control-Allow-Origin Access-Control-Expose-Headers Access-Control-Max-Age Access-Control-Request-Headers Access-Control-Request-Method Age Allow Authorization Cache-Control Connection Content-Disposition Content-Encoding Content-Language Content-Length Content-Location Content-Range Content-Type Cookie Cookie2 Date DNT ETag Expect Expires Forwarded From Headers Host If-Match If-Modified-Since If-None-Match If-Range If-Unmodified-Since Keep-Alive Large-Allocation Last-Modified Location Origin Pragma Proxy-Authenticate Proxy-Authorization Public-Key-Pins Public-Key-Pins-Report-Only Range Referer Referrer-Policy Retry-After Server Set-Cookie Set-Cookie2 SourceMap Strict-Transport-Security TE Tk Trailer Transfer-Encoding Upgrade-Insecure-Requests User-Agent User-Agent: Firefox Vary Via Warning WWW-Authenticate X-Content-Type-Options X-DNS-Prefetch-Control X-Forwarded-For X-Forwarded-Host X-Forwarded-Proto X-Frame-Options X-XSS-Protection Methods CONNECT DELETE GET HEAD Methods OPTIONS PATCH POST PUT Status 100 Continue 101 Switching Protocols 200 OK 201 Created 202 Accepted 203 Non-Authoritative Information 204 No Content 205 Reset Content 206 Partial Content 300 Multiple Choices 301 Moved Permanently 302 Found 303 See Other 304 Not Modified 307 Temporary Redirect 308 Permanent Redirect 400 Bad Request 401 Unauthorized 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 Payload Too Large 414 URI Too Long 415 Unsupported Media Type 416 Range Not Satisfiable 417 Expectation Failed 426 Upgrade Required 428 Precondition Required 429 Too Many Requests 431 Request Header Fields Too Large 451 Unavailable For Legal Reasons 500 Internal Server Error 501 Not Implemented 502 Bad Gateway 503 Service Unavailable 504 Gateway Timeout 505 HTTP Version Not Supported 511 Network Authentication Required Status

文字

POST将数据发送到服务器。请求主体的类型由Content-Type标题指示。

PUT和POST之间的差PUT和POST是，PUT是幂等：调用它一次或多次连续具有相同的效果（也就是没有侧面的效果），在那里连续的相同的POST可具有额外的效果，如通过顺序数次。

POST请求经由通常发送 HTML 形式在服务器上的变化和结果。在这种情况下，内容类型是通过将适当的字符串在所选enctype的属性的<form>元件或所述的formenctype属性<input>或<button>元素：

application/x-www-form-urlencoded：值被编码在由分离键-值元组'&'，具有'='键和值之间。非字母数字字符是百分比编码的：这就是为什么这种类型不适合与二进制数据一起使用的原因（用来multipart/form-data代替）

multipart/form-data

text/plain

当通过 HTML 表单以外的方法发送POST请求时 —— 例如通过XMLHttpRequest- 可以采用任何类型的主体。如 HTTP 1.1规范中所述，POST旨在允许统一的方法覆盖以下功能：

现有资源的标注

向公告板，新闻组，邮件列表或类似的文章组发布信息；

向数据处理过程提供一组数据，例如提交表单的结果；

通过追加操作扩展数据库。

请求具有正文	是
成功的回应有身体	是
安全	没有
幂等	没有
可缓存	仅在包含新鲜度信息的情况下
在HTML表单中允许	是

语法

POST /index.html

示例

使用默认的application/x-www-form-urlencoded内容类型的简单表单：

POST / HTTP/1.1Host: foo.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 13say=Hi&to=Mom

使用multipart/form-data内容类型的表单：

POST /test.html HTTP/1.1 Host: example.org 
Content-Type: multipart/form-data;boundary="boundary" --boundary 
Content-Disposition: form-data; name="field1" value1 
--boundary 
Content-Disposition: form-data; name="field2"; filename="example.txt" value2

规范

规范	标题
RFC 7231，第4.3.3节：POST	超文本传输协议（HTTP / 1.1）：语义和内容

浏览器兼容性

Feature	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic Support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

Feature	Android	Chrome for Android	Edge mobile	Firefox for Android	IE mobile	Opera Android	iOS Safari
Basic Support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

也可以看看

Content-Type

Content-Disposition