nginx_解决无限跳转问题

01. 用户访问www.oldboy.com/test/oldboy.jpg 目录下任何内容, 实际上真实访问是http://www.oldboy.com
    www.oldboy.com/test/oldboy.jpg ==> www.oldboy.com/oldboy.jpg
    第一个历程: 编写配置文件    
    server {
      listen       80;
      server_name  www.jd.com;
      root         /html/www;
      index        index.html;
      location /test/ {
         rewrite /test/(.*)  http://www.oldboy.com/$1 permanent;
      }
    }
    
    
02. 用户访问course-11-22-33.html实际上真实访问是/course/11/22/33/course_33.html
    #http://www.oldboy.com/course-11-22-33.html ==> http://www.oldboy.com/course/11/22/33/course_33.html 

    server {
       listen            80;
       root           /html/www;
       server_name       www.oldboy.com;
       index          index.html;
       location / {
       rewrite (.*)-(.*)-(.*)-(.*).(.*) $1/$2/$3/$4/course_$4.$5 last;
       #灵活rewrite ^/course-(.*)-(.*)-(.*).html$ /course/$1/$2/$3/course_$3.html redirect;
       #固定rewrite ^/course-(.*)  /course/11/22/33/course_33.html redirect;
       }
    }

    
03. 用户访问 www.jd.com 跳转成 www.oldboy.com (难点) -- 无限跳转
    方法一:
    server {
      listen       80;
      server_name  www.jd.com;
      rewrite ^/(.*) http://www.oldboy.com/$1 permanent;
    }
    
    server {
       listen            80;
       server_name       www.oldboy.com;
       root              /html/www;
       index             index.html;
    } 

    方法二:
    server {
       listen            80;
       server_name       www.oldboy.com www.jd.com;
       root              /html/www;
       index             index.html;
       location  / {
          if ($http_host ~* ^www.jd.com$) {
            rewrite ^/(.*) http://www.oldboy.com/$1 permanent;
          }
       }
    }
    
    curl -v    --- 显示详细访问过程
    curl -L    --- 追踪跳转过程,显示页面信息