Nginx rewrite 二三例

             
             在使用nginx的时候我们经常会收到开发提出的一些需求，比如访问xxx跳转到xxx, 首先想到的就是我们使用nginx  rewrite这个功能来实现这个需求，使用nginx rewrite 就必须要熟悉nginx的内嵌变量，了解每个变量的作用与区别，便于我们编写 rewrite 规则。
           
             现在就把我工作中接触到一些需求写下来，已被不时之需。
   
             

     example  1
       跳转到
            if ($query_string ~* "id=(\d+)$") {
                        set $digit $1;
                 rewrite "^/index\.php"  permanent;
}
      example 2
      把访问的请求跳转到
      if ($request_uri ~ "/a\?key=(\d+)"){
                        set $number $1;
                 rewrite ^/(.*)  last;  # 注意那个 “？” 旧链接自带的参数会默认追加到新链接后面，加上？避免这种情况
}

      example 3
      业务平台部门需要一个seo优化，提高seo权重, 所以需要一些以其他语言编写的后缀页面也rewrite到首页
      if ($uri ~ php$) {
                rewrite ^/(.*)$   permanent;
}

      example 4
      url 中参数t参数值等于 ufruit.net，跳转首页
      if ($arg_t ~ "www\.ufruit\.net") {
               rewrite ^/(.*)$   permanent;
}

     
        example 5
        "rewrite" 
        if ( $request_uri ~ "index\.php\?r=([^/]+)/([^&]+)&v=bi" ) {
                 set $s "$1";
                 set $p "$2";
                 rewrite ^/(.*)$     permanent;
}
   
     2014/08/20 23:49:31 [notice] 11049#0: *16 "index\.php\?r=([^/]+)/([^&]+)&v=bi" matches "/index.php?r=site/product&v=bi", client: 172.16.100.123, server: request: "HEAD /index.php?r=site/product&v=bi HTTP/1.1", host: ""
    2014/08/20 23:49:31 [notice] 11049#0: *16 "^/(.*)$" matches "/index.php", client: 172.16.100.123, server: request: "HEAD /index.php?r=site/product&v=bi HTTP/1.1", host: ""
    2014/08/20 23:49:31 [notice] 11049#0: *16 rewritten redirect: "", client: 172.16.100.123, server: request: "HEAD /index.php?r=site/product&v=bi HTTP/1.1", host: ""

                                                                                                                                                             未完待续 ...
                                                                                                                                                                                                    emar_Cail