ssm登录页面

今天老师教我们做了ssm项目的登录页面以及增删改查
相比以前的代码更加精简易懂

登录页面可以从上一个项目中复制过来

@Controller
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping("/findAll.do")
    public ModelAndView findAll(){
        List<User>users=userService.findAll();
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.setViewName("allUser.jsp");
        modelAndView.addObject("users",users);
        return modelAndView;
    }
    @RequestMapping("/login.do")
    public String login(User user){
        Boolean flag = userService.login(user.getUsername(),user.getPassword());
        if(flag){
            return "redirect:/findAll.do";
        }else {
            return "failure.jsp";
        }
    }
    @RequestMapping("/delete.do")
    public String deleteById(int id){
        userService.deleteById(id);
        return "redirect:/findAll.do";
    }
}

@Service
public class UserService implements IUserService {
    @Autowired
    private IUserDao userDao;
    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }

    @Override
    public Boolean login(String username, String password) {
        User user = userDao.selectByUserName(username);
        if (user!=null && password.equals(user.getPassword())){
            return true;
        }
        return false;
    }

    @Override
    public void deleteById(int id) {
        userDao.deleteById(id);
    }
}

public interface IUserDao {
    List<User>findAll();
    User selectByUserName(String name);
    void deleteById(int id);
}

public interface IUserService {
    List<User> findAll();
    Boolean login(String username,String password);
    void deleteById(int id);
}