Apache如何解决跨域资源访问

1. 找到配置文件 httpd.conf
   #LoadModule headers_module modules/mod_headers.so
   去掉#注释（开启apache头信息自定义模块）
2. 配置文件 httpd.conf
   大概295行，改为 Require all granted
   
   Require all granted
   
3. 如果项目里有.htaccess文件
   放入这段代码

    Header set Access-Control-Allow-Origin: "*"
    Header set Access-Control-Allow-Methods: "GET,POST,PUT,DELETE,OPTIONS"
    Header set Access-Control-Allow-Headers: "DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization"

或者配置域名里加 Header set Access-Control-Allow-Origin “*”

   DocumentRoot /var/www/host.example.com
   ServerName host.example.com
   JkMount /webapp/* jkworker
   Header set Access-Control-Allow-Origin "*"
   RewriteEngine on
   RewriteRule   ^/otherhost  http://otherhost.example.com/webapp [R,L]

或者在httpd.conf最下面添加配置（全局配置）：

    Header set Access-Control-Allow-Origin: "*"
    Header set Access-Control-Allow-Methods: "GET,POST,PUT,DELETE,OPTIONS"
    Header set Access-Control-Allow-Headers: "Content-Type"

4. 重启apache，强刷页面，搞定！