某马旅游网姓名提示时无法获取session
只需要在loginServlet上加一个键为"user"的user对象即可
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 {
// 获取用户名和密码数据
Map<String, String[]> map = request.getParameterMap();
HttpSession session = request.getSession();
// 封装对象
User user = new User();
try {
BeanUtils.populate(user,map);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
// 3. 调用Service查询
UserService service = new UserServiceImpl();
User u = service.login(user);
ResultInfo info = new ResultInfo();
// 4. 判断用户对象是否为null
if ( u == null){
// 用户名密码错误
info.setFlag(false);
info.setErrorMsg("用户名或密码错误");
}
// 判断用户是否激活
if (u != null && !"Y".equals(u.getStatus())){
// 用户尚未激活
info.setFlag(false);
info.setErrorMsg("您尚未激活请登录邮箱激活");
}
// 6.判断登陆成功
if (u != null && "Y".equals(u.getStatus())){
//登陆成功
info.setFlag(true);
// 一定一定要注意 ,我们登陆完一定要把用户数据存入session
session.setAttribute("user",u);
}
// 相应数据
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);
}
}