openlayer3跨域问题解决方法
我用Geoserver发布的图层，里面遇到的跨域问题，具体解决方案如下。
1.把CORS文件里面的解压文件org放到D:\GeoServer 2.7.2\webapps\geoserver\WEB-INF\classes目下
2.修改D:\GeoServer 2.7.2\webapps\geoserver\WEB-INF\目录下的web.xml;如下：
在filter集合末尾额外添加一个filter：
<filter>
<filter-name>cross-origin</filter-name>
<filter-class>org.mortbay.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</param-value>
</init-param>
<init-param>
<param-name>allowedHeaders</param-name>
<param-value>x-requested-with,content-type</param-value>
</init-param>
</filter>
<filter-name>cross-origin</filter-name>
<filter-class>org.mortbay.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</param-value>
</init-param>
<init-param>
<param-name>allowedHeaders</param-name>
<param-value>x-requested-with,content-type</param-value>
</init-param>
</filter>
在filter-mapping末尾额外添加一个filter-mapping
<filter-mapping>
<filter-name>cross-origin</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-name>cross-origin</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.重启
转载自：https://blog.csdn.net/jsboy123/article/details/49383613
