src/main/java/cn/pzhu/pserson/controller/LoginController.java

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package cn.pzhu.pserson.controller;

import cn.pzhu.pserson.domain.User;
import cn.pzhu.pserson.service.UserService;
import cn.pzhu.pserson.util.Constants;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpSession;

@Controller
public class LoginController {

    @Autowired
    private UserService userService;

    @RequestMapping("/")
    public ModelAndView index() {
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("loginForm");
        return modelAndView;
    }

    @RequestMapping(value = "/login")
    public ModelAndView login(@RequestParam("loginname") String loginname,
                              @RequestParam("password") String password,
                              HttpSession session,
                              ModelAndView mv) {
        User user = userService.login(loginname, password);
        if (user != null) {
            session.setAttribute(Constants.USER_SESSION, user);
            session.setAttribute("userid", user.getId());
            session.setAttribute("username", user.getUsername());
            mv.setViewName("redirect:/index");
        } else {
            mv.addObject("message", "登录名或密码错误!请重新输入");
            mv.setViewName("forward:/loginForm");
        }
        return mv;
    }

    @RequestMapping(value = "/guest_login")
    public ModelAndView guest_login(
                              HttpSession session,
                              ModelAndView mv) {
        User user = new User();
        user.setLoginname("guest");
        user.setUsername("访客");
        user.setLevel("2");
        user.setId(-1);
        session.setAttribute(Constants.USER_SESSION, user);
        session.setAttribute("userid", user.getId());
        session.setAttribute("username", user.getUsername());
        mv.setViewName("redirect:/index");
        return mv;
    }