package com.moral.Webinterceptor;

import com.alibaba.fastjson.JSONObject;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.HashMap;

public class WebInterceptor implements HandlerInterceptor {
    public static final String SESSION_KEY = "USER_LOGIN";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
        if (request.getSession().getAttribute(SESSION_KEY) == null) {
            HashMap resultMap = new HashMap<String, Object>();
            resultMap.put("msg", "未登录");
            resultMap.put("accountId", -1);
            JSONObject json = new JSONObject(resultMap);
            response.setContentType("application/json; charset=utf-8");
            PrintWriter writer = response.getWriter();
            writer.write(json.toString());
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}