跨域过滤器

package cn.jbolt.common.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

public class AllowOriginFilter implements Filter {

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse httpResponse =(HttpServletResponse)response;
        httpResponse.setHeader("Access-Control-Allow-Origin", "*");
        httpResponse.setHeader("Access-Control-Allow-Headers", "Authentication");
        chain.doFilter(request, httpResponse);        
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
        
    }
    
}

================================================================================================web.xml:

  <filter>
    <filter-name>AllowOriginFilter</filter-name>
    <filter-class>cn.jbolt.common.filter.AllowOriginFilter</filter-class>    
  </filter>
  <filter-mapping>
    <filter-name>AllowOriginFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <url-pattern>/*</url-pattern>
  </filter-mapping>