tomcat 解决跨域 Access-Control-Allow-Origin

例如：

Access to Font at ‘http://cdn.luzhiwei.com/wp-content/themes/yusi1.0/fonts/fontawesome-webfont.woff?v=4.1.0’ from origin ‘http://luzhiwei.com’ has been blocked by **CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.**

解决方案：
tomcat -> config -> web.xml

<!-- The mapping for the HTTP header security Filter -->

找到这行，在这行下添加

<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>