前端项目跨域问题

前端项目访问主干项目出现跨域问题的解决方案：

1、主干项目为maven项目

    在pox.xml文件中加入相应的包

   

     <dependency>
          <groupId>org.eclipse.jetty</groupId>
          <artifactId>jetty-servlets</artifactId>
          <version>9.3.0.M2</version>
      </dependency>

    在web.xml中配置如下：

      

<!-- 让jetty支持跨域访问 -->
    <filter>
        <filter-name>cross-origin</filter-name>
        <filter-class>org.eclipse.jetty.servlets.CrossOriginFilter</filter-class>
        <init-param>
            <param-name>allowedOrigins</param-name>
            <param-value>*</param-value>
        </init-param>
        <init-param>
            <param-name>allowedMethods</param-name>
            <param-value>GET,POST,HEAD</param-value>
        </init-param>
        <init-param>
            <param-name>allowedHeaders</param-name>
            <param-value>X-Requested-With,Content-Type,Accept,Origin</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>cross-origin</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>