SSM跨域配置

1.后台跨域要引用两个jar包（cors-filter-1.7.jar、java-property-utils-1.9.jar）

提供下载地址：

链接: https://pan.baidu.com/s/1QHsKnlTZ2oknkRO06TqxyA
密码: e44u
2.在web.xml中配置跨域过滤器

<!-- 跨域过滤器 -->
  	<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>

此时便可跨域访问项目。