SpringBoot如何配置CROS 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.HttpServletRequest;

　　import javax.servlet.http.HttpServletResponse;

　　import org.slf4j.Logger;

　　import org.slf4j.LoggerFactory;

　　import org.springframework.context.annotation.Configuration;

　　import org.springframework.stereotype.Component;

　　/**

　　*

　　* @ClassName: CorsFilter

　　* @Description: SpringBoot 跨域处理拦截器

　　*/

　　@Component

　　public class CROSFilter implements Filter {

　　public static final Logger logger = LoggerFactory.getLogger(CROSFilter.class);

　　@Override

　　public void init(FilterConfig filterConfig) throws ServletException {

　　// TODO Auto-generated method stub

　　}

　　@Override

　　public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)

　　throws IOException, ServletException {

　　HttpServletResponse response = (HttpServletResponse) res;

　　HttpServletRequest reqs = (HttpServletRequest) req;

　　/*

　　* 跨域设置允所有请求跨域

　　* 如果允许指定的客户端跨域设置: http://127.0.0.1:8020

　　*/

　　response.setHeader("Access-Control-Allow-Origin","*");

　　response.setHeader("Access-Control-Allow-Credentials", "true");

　　response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");

　　response.setHeader("Access-Control-Max-Age", "3600");

　　response.setHeader("Access-Control-Allow-Headers", "Content-Type");

　　if (((HttpServletRequest) req).getMethod().equals("OPTIONS")) {

　　response.getWriter().println("ok");

　　return;

　　}

　　chain.doFilter(req, res);

　　}

　　@Override

　　public void destroy() {

　　// TODO Auto-generated method stub

　　}

　　}