nginx rewite指令模块

引言：nginx作为反向代理服务器, 有时候需要修改http请求中的uri;

nginx rewrite模块包含的指令

• break
• if
• return
• rewrite
• rewrite_log

nginx rewrite模块简介

The ngx_http_rewrite_module module is used to change request URI using regular expressions, return redirects, and conditionally select configurations.

主要包含三种方式，正则表达式改变uri, 直接返回跳转301，302、返回404、501错误； 根据条件修改uri;

nginx rewrite模块指令的执行顺序

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该模块的指令可以出现在server/location下面，当然还有if块中；

• the directives of this module specified on the server level are executed sequentially;
• repeatedly:
  
  • a location is searched based on a request URI;
  • the directives of this module specified inside the found location are executed sequentially;
  • the loop is repeated if a request URI was rewritten, but not more than 10 times.

rewrite指令的标记

<code><span>Syntax</span>: <span>rewrite regex replacement [flag];</span><span>Default</span>: <span>   —</span><span>Context</span>: <span>   server, location, if</span></code>

• last ; stops processing the current set of ngx_http_rewrite_module directives and starts a search for a new location matching the changed URI;
• break ; stops processing the current set of ngx_http_rewrite_module directives as with the break directive;
• redirect; returns a temporary redirect with the 302 code; used if a replacement string does not start with “http://” or “https://”;
• permanent ; returns a permanent redirect with the 301 code.

这四个标记并非是必须的，如果缺失[flag],则顺序向下执行；

流程图

以上就介绍了nginx rewite指令模块，包括了正则表达式方面的内容，希望对PHP教程有兴趣的朋友有所帮助。