tomcat配置允许跨域访问

1. 下载两个jar包，并将其放置到tomcat/lib目录下

• cors-filter-1.8.jar (opens new window)
• java-property-utils-1.9.jar (opens new window)

2. 修改web.xml文件，在filter处添加以下代码后，重启tomcat

	<!--tomcat跨域配置-->
<filter>
       <filter-name>CORS</filter-name>
       <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
       <init-param>
           <param-name>cors.allowOrigin</param-name>
           <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>
<!--tomcat跨域配置-->