Content-Length 是一个实体消息首部，用来指明发送给接收方的消息主体的大小，即用十进制数字表示的八位元组的数目。
| Header type | Entity header |
|---|---|
| Forbidden header name | yes |
语法
Content-Length: <length>
指令
- <length>
- 消息的长度，用十进制数字表示的八位字节的数目。
规范
| Specification | Title |
|---|---|
| RFC 7230, section 3.3.2: Content-Length | Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing |
浏览器兼容性
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Content-Length | Chrome Full support Yes | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support