http - QueryString/GET/URL 参数的限制是什么

Question

QueryString/GET/URL 参数有什么限制

Answer 1

理论上没有限制。对于 HTTP URL，HTTP 1.1 specification状态:

The HTTP protocol does not place any a priori limit on the length ofa URI. Servers MUST be able to handle the URI of any resource theyserve, and SHOULD be able to handle URIs of unbounded length if theyprovide GET-based forms that could generate such URIs. A serverSHOULD return 414 (Request-URI Too Long) status if a URI is longerthan the server can handle (see section 10.4.15).

但实际上，许多客户端和服务器只支持一定长度的 URL。 rule of thumb is not to use URLs longer than 2000 characters (已考虑百分比编码)。