JAVA：后台解决跨域问题

版权声明：本文出自艾派儿的博客，转载必须注明出处。 https://blog.csdn.net/ljl940811/article/details/90690818

试了一下可以直接用就解决了前端跨域请求。。。。
package com.ljl.util;

import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


/**
 * 解决ajax跨域问题
 * @author yaoshuo
 * @version v0.1.0
 */
@Component
public class CORSFilter implements Filter {
    public void destroy() {
    }

	public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletResponse response = (HttpServletResponse) resp;
        response.setHeader("Access-Control-Allow-Origin","*");
        response.setHeader("Access-Control-Allow-Method","POST,GET,OPTIONS,DELETE");
        response.setHeader("Access-Control-Max-Age","3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        chain.doFilter(req,resp);
    }

    public void init(FilterConfig config) {
    }

}