某馬旅遊網姓名提示時無法獲取session

某馬旅遊網姓名提示時無法獲取session

只需要在loginServlet上加一個鍵爲"user"的user對象即可

package cn.itcast.travel.web.servlet;

import cn.itcast.travel.domain.ResultInfo;
import cn.itcast.travel.domain.User;
import cn.itcast.travel.service.UserService;
import cn.itcast.travel.service.impl.UserServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.beanutils.BeanUtils;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 獲取用戶名和密碼數據
        Map<String, String[]> map = request.getParameterMap();
        HttpSession session = request.getSession();
        // 封裝對象
        User user = new User();
        try {
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

        // 3. 調用Service查詢
        UserService service = new UserServiceImpl();
        User u = service.login(user);

        ResultInfo info = new ResultInfo();
        // 4. 判斷用戶對象是否爲null
        if ( u == null){
            // 用戶名密碼錯誤
            info.setFlag(false);
            info.setErrorMsg("用戶名或密碼錯誤");
        }
        // 判斷用戶是否激活
        if (u != null && !"Y".equals(u.getStatus())){
            // 用戶尚未激活
            info.setFlag(false);
            info.setErrorMsg("您尚未激活請登錄郵箱激活");
        }
        // 6.判斷登陸成功
        if (u != null && "Y".equals(u.getStatus())){
            //登陸成功
            info.setFlag(true);
            // 一定一定要注意 ，我們登陸完一定要把用戶數據存入session
            session.setAttribute("user",u);
        }

        // 相應數據
        ObjectMapper mapper = new ObjectMapper();
        response.setContentType("application/json;charset=utf-8");
        mapper.writeValue(response.getOutputStream(),info);

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}