1.添加pom依赖
<dependency> ????<groupId>com.thetransactioncompany</groupId> ?????<artifactId>cors-filter</artifactId> ?????<version>2.6<ersion><!--<scope>runtime</scope>--></dependency>
2.在web.xml 中增加配置
<!-- 添加解决跨域的代码配置，基于pom中有cors-filter的依赖 ，begin --> ????<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</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> ????<!-- 添加解决跨域的代码配置，基于pom中有cors-filter的依赖 ，end -->
实现AJAX跨域访问方式一
原文地址：http://www.cnblogs.com/justuntil/p/7560420.html