java,spring,tomcat,跨域设置

通过工具远程访问rest会出现

 

 已阻止跨源请求：同源策略禁止读取位于 http://XXXXX:1200/gyly/busData 的远程资源。（原因：CORS 请求失败）。 

修改方法

添加Filter

import java.io.IOException;  
  
import javax.servlet.FilterChain;  
import javax.servlet.ServletException;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
import org.springframework.web.filter.OncePerRequestFilter;  
  
public class CorsFilter extends OncePerRequestFilter {  
  
 @Override  
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)  
            throws ServletException, IOException {  
    response.addHeader("Access-Control-Allow-Origin", "*");  
    response.addHeader("Access-Control-Allow-Methods",  
            "GET, POST, PUT, DELETE, OPTIONS");  
    response.addHeader("Access-Control-Allow-Headers",  
            "origin, content-type, accept, x-requested-with, sid, mycustom, smuser");  
        filterChain.doFilter(request, response);  
    }  
}  

修改web.xml

<filter>  
  <filter-name>CorsFilter</filter-name>  
  <filter-class>com.interfaceservice.filter.CorsFilter</filter-class>  
</filter>  
<filter-mapping>  
  <filter-name>CorsFilter</filter-name>  
  <url-pattern>/*</url-pattern>  
</filter-mapping>