配置跨域访问

1、Nginx配置跨域访问

　 add_header Access-Control-Allow-Origin *; 

 2、Tomcat配置跨域访问

　　Tomcat—conf—web.xml 加入以下代码

　　参考链接：https://blog.csdn.net/weixin_40070355/article/details/94617247

    <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>
    </filter>
    <filter-mapping>
      <filter-name>CorsFilter</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>