first commit

whyczh

2021-09-08 8c51c3807befed873a7ab86c0e1e52dd189a8b3f

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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() {
 
    }
}