package com.whyc.filter;

import org.springframework.core.annotation.Order;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @Description :
 * @date 2020/09/11
 **/
@WebFilter
public class CrossDomainFilter implements Filter {


    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        System.out.println("执行了过滤器CrossDomainFilter");
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse resp= (HttpServletResponse) response;
        HttpServletRequest req= (HttpServletRequest) request;
        String origin = req.getHeader("Origin");
        // String origin = "http://localhost:8080";
        resp.setHeader("Access-Control-Allow-Origin", origin);
        resp.setHeader("Access-Control-Allow-Headers", "X-Requested-With,content-type,token");
        resp.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
        resp.setHeader("Access-Control-Allow-Credentials", "true");

        chain.doFilter(request, resp);
    }

    @Override
    public void destroy() {

    }
}