JAVA高级面试进阶训练营视频教程

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这几天和前端对接接口，前端的错误信息是：

 

　注释：
　　Failed to load http://192.168.3.3:8080/Light_Push/webFrames.action?page=1&searchProject=1&page=1&searchProject=1: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin 　　　　　　       'http://localhost:8080' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

前端用了vue，axios（http客户端）
后端ssm框架，spring版本是3.2.13

发现可以从后台spring跨域着手解决

解决跨域方法：

第一步：导入jar包

　　cors-filter-1.7.jar、java-property-utils-1.9.jar

　　下载地址：http://pan.baidu.com/s/1pLkLPGJ

第二步：在web.xml文件配置

<filter>
  <filter-name>CORS</filter-name>
  <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
  <init-param>
   <param-name>cors.allowOrigin</param-name>   <!--配置授信的白名单的域名！ -->
   <param-value>*</param-value>
  </init-param>
  <init-param>
   <param-name>cors.supportedMethods</param-name>
   <param-value> GET, POST, HEAD, PUT, DELETE </param-value>
  </init-param>
  <init-param>
   <param-name>cors.supportedHeaders</param-name>
   <param-value> Accept, Origin, X-Requested-With, Content-Type, Last-Modified </param-value>
  </init-param>
  <init-param>
   <param-name>cors.exposedHeaders</param-name>
   <param-value>Set-Cookie</param-value>
  </init-param>
  <init-param>
   <param-name>cors.supportsCredentials</param-name>
   <param-value>true</param-value>
  </init-param>
 </filter>
 <filter-mapping>
  <filter-name>CORS</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>