vue中跨域以及sessionId不一致問題及解決

更新時間：2023年12月06日 15:49:09 作者：花和尚也有春天

這篇文章主要介紹了vue中跨域以及sessionId不一致問題及解決方案,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教

情景

使用Vue和SpringBoot做前后端分離項目，出現(xiàn)跨域問題，因為前端訪問調(diào)用后端3個接口

第一：session校驗
第二：登錄
第三：查詢接口

但是將session分別獲取，然后打印出來，發(fā)現(xiàn)sessionid不一致，導致訪問第三個查詢數(shù)據(jù)接口而失敗。

后端springboot處理

攔截器preHandle中加入如下代碼：

 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
 
    	response.setHeader("Access-Control-Allow-Origin",request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Methods", "*");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", "Authorization,Origin, X-Requested-With, Content-Type, Accept,Access-Token");//Origin, X-Requested-With, Content-Type, Accept,Access-Token
        return true;
    }

關(guān)鍵是這兩句

response.setHeader("Access-Control-Allow-Origin",request.getHeader("Origin"));//支持跨域請求

response.setHeader("Access-Control-Allow-Credentials", "true");//是否支持cookie跨域

注意：

當Access-Control-Allow-Credentials設置為ture時，Access-Control-Allow-Origin不能設置為*

package com.huayong.bi.web.interceptor;
 
import com.huayong.bi.inter.constants.EnumHttpStatusType;
import com.huayong.bi.inter.util.LogUtil;
import com.huayong.bi.web.common.util.SpringUtil;
import com.huayong.bi.web.dao.impl.PermissionCheckImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.alibaba.fastjson.JSONObject;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Set;
 
public class LoginInterceptor implements HandlerInterceptor {
 
    private static final Logger log = LoggerFactory.getLogger(LoginInterceptor.class);
 
    PermissionCheckImpl pci = null;
 
 
    /**
     * 進入controller層之前攔截請求
     * @param request
     * @param
     * @param
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        PrintWriter out = null;
        JSONObject jo = null;
        try {
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json; charset=utf-8");
//        response.setHeader("Access-Control-Allow-Origin", "*");
//        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
//        response.setHeader("Access-Control-Max-Age", "3600");
//        response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
 
 
            response.setHeader("Access-Control-Allow-Origin",request.getHeader("Origin"));
            response.setHeader("Access-Control-Allow-Methods", "*");
            response.setHeader("Access-Control-Allow-Credentials", "true");
            response.setHeader("Access-Control-Allow-Headers", "Authorization,Origin, X-Requested-With, Content-Type, Accept,Access-Token");//Origin, X-Requested-With, Content-Type, Accept,Access-Token
            
 
        //本地調(diào)試將if-else注釋 直接返回true
        if ("".equals((String) request.getSession().getAttribute("token")) || (String) request.getSession().getAttribute("token") == null) {
            PrintWriter writer = response.getWriter();
            writer.print("login");
            return false;
        } else {
            System.out.println("=====LoginInterceptor=======");
            //校驗權(quán)限
            String userName = (String) request.getSession().getAttribute("userName");
            String mobile = (String) request.getSession().getAttribute("mobile");
            LogUtil.print("---userName---" + userName);
            LogUtil.print("---mobile---" + mobile);
            LogUtil.print("URL : " + request.getRequestURL().toString());
            System.out.println("URL : " + request.getRequestURL().toString());
            System.out.println("RequestURI : " + request.getRequestURI());
            pci = (PermissionCheckImpl) SpringUtil.getBean("permissionCheckImpl");
            String uri = request.getRequestURI();
            Set<String> set = pci.queryPermissions(userName, mobile);
            if(null==set || set.size()<1){
                //默認用戶
                userName="普通用戶";
                mobile="0";
                set = pci.queryPermissions(userName, mobile);
            }
            boolean per = false;
                if (null != set && set.size() > 0) {
                    for (String se : set) {
                        LogUtil.print("---se---" + se);
                        if (uri.split("/")[1].equals(se.replace("/", ""))) {
                            if (per == false) {
                                per = true;
                            }
                        }
                    }
                }else{
                    jo = new JSONObject();
                    jo.put("code", EnumHttpStatusType.no_permission.getCode());
                    jo.put("msg", EnumHttpStatusType.no_permission.getStatus());
                    jo.put("data", "");
                    out = response.getWriter();
                    out.append(jo.toString());
                    return false;
                }
                if (per == true) {
                    return true;
                } else {
                        jo = new JSONObject();
                        jo.put("code", EnumHttpStatusType.no_permission.getCode());
                        jo.put("msg", EnumHttpStatusType.no_permission.getStatus());
                        jo.put("data", "");
                        out = response.getWriter();
                        out.append(jo.toString());
                        return false;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            response.sendError(500);
            return false;
        }
    }
 
    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        //log.info("--------------處理請求完成后視圖渲染之前的處理操作---------------");
    }
 
    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        //log.info("---------------視圖渲染之后的操作-------------------------0");
    }
 
}