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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將數(shù)據(jù)發(fā)送到服務(wù)器。請(qǐng)求主體的類(lèi)型由Content-Type標(biāo)題指示。

PUT和POST之間的差PUT和POST是，PUT是冪等：調(diào)用它一次或多次連續(xù)具有相同的效果（也就是沒(méi)有側(cè)面的效果），在那里連續(xù)的相同的POST可具有額外的效果，如通過(guò)順序數(shù)次。

POST請(qǐng)求經(jīng)由通常發(fā)送 HTML 形式在服務(wù)器上的變化和結(jié)果。在這種情況下，內(nèi)容類(lèi)型是通過(guò)將適當(dāng)?shù)淖址谒xenctype的屬性的<form>元件或所述的formenctype屬性<input>或<button>元素：

  • application/x-www-form-urlencoded：值被編碼在由分離鍵-值元組'&'，具有'='鍵和值之間。非字母數(shù)字字符是百分比編碼的：這就是為什么這種類(lèi)型不適合與二進(jìn)制數(shù)據(jù)一起使用的原因（用來(lái)multipart/form-data代替）

  • multipart/form-data

  • text/plain

當(dāng)通過(guò) HTML 表單以外的方法發(fā)送POST請(qǐng)求時(shí) —— 例如通過(guò)XMLHttpRequest- 可以采用任何類(lèi)型的主體。如 HTTP 1.1規(guī)范中所述，POST旨在允許統(tǒng)一的方法覆蓋以下功能：

  • 現(xiàn)有資源的標(biāo)注

  • 向公告板，新聞組，郵件列表或類(lèi)似的文章組發(fā)布信息；

  • 向數(shù)據(jù)處理過(guò)程提供一組數(shù)據(jù)，例如提交表單的結(jié)果；

  • 通過(guò)追加操作擴(kuò)展數(shù)據(jù)庫(kù)。

請(qǐng)求具有正文

是

成功的回應(yīng)有身體

是

安全

沒(méi)有

冪等

沒(méi)有

可緩存

僅在包含新鮮度信息的情況下

在HTML表單中允許

是

語(yǔ)法

POST /index.html

示例

使用默認(rèn)的application/x-www-form-urlencoded內(nèi)容類(lèi)型的簡(jiǎn)單表單：

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

使用multipart/form-data內(nèi)容類(lèi)型的表單：

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

規(guī)范

規(guī)范

標(biāo)題

RFC 7231，第4.3.3節(jié)：POST

超文本傳輸協(xié)議（HTTP / 1.1）：語(yǔ)義和內(nèi)容

瀏覽器兼容性

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

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