java+vue跨域每次請求獲取不同session問題

描述

vue在做登錄的時候，明明已經把用戶數據存入了httpsession中，但在后面的請求攔截中發現獲取的session屬性size為0

斷點發現登錄用的session和攔截得到的session不是一個id，也就是說不是同一個session

查資源得到解決辦法

java端

import org.springframework.stereotype.Component;

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

@Component
public class CorsFilter implements Filter {

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse resp = (HttpServletResponse) response;
        resp.addHeader("Access-Control-Allow-Credentials", "true");
        //允許前端跨域攜帶cookie   axios.defaults.withCredentials = true;
        resp.addHeader("Access-Control-Allow-Origin", req.getHeader("origin"));
        resp.addHeader("Access-Control-Allow-Methods", "*");
        resp.addHeader("Access-Control-Allow-Headers", "Content-Type,token");
        //前端ajax請求OPTIONS直接放行，解決不能得到header里token問題
        if (req.getMethod().equals("OPTIONS")) {
            response.getWriter().println("ok");
            return;
        }
        chain.doFilter(request, response);
    }
    @Override
    public void destroy() {
    }
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
}

vue端

axios.defaults.withCredentials = true;// 允許跨域攜帶cookie