Servlet跨域请求

java

public class WebCORSFliter implements Filter{
    @Override
    public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {
        // TODO Auto-generated method stub
        HttpServletResponse resp=(HttpServletResponse) response;
        resp.setHeader("Access-Control-Allow-Headers", "*");
        //允许所有的方法访问 如post , get方法
        resp.setHeader("Access-Control-Allow-Method", "*");
        //允许所有的域
        resp.setHeader("Access-Control-Allow-Origin","*");
        //放行
        chain.doFilter(request, resp);
    }
}