tomcat8.0配置跨域访问

    <!-- 配置跨域访问 -->
    <filter>  
        <filter-name>CorsFilter</filter-name>  
        <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>  
        <init-param>  
            <param-name>cors.allowed.origins</param-name>  
            <param-value>*</param-value>  
        </init-param>  
        <init-param>  
            <param-name>cors.allowed.methods</param-name>  
            <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>  
        </init-param>  
        <init-param>  
            <param-name>cors.allowed.headers</param-name>  
            <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>  
        </init-param>  
        <init-param>  
            <param-name>cors.exposed.headers</param-name>  
            <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>  
        </init-param>   
        <init-param>  
            <param-name>cors.support.credentials</param-name>  
            <param-value>true</param-value>  
        </init-param>   
        <init-param>  
            <param-name>cors.preflight.maxage</param-name>  
            <param-value>1800</param-value>  
        </init-param>   
    </filter>  
    <filter-mapping>  
        <filter-name>CorsFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>