ssm搭建半成品＋登录功能实现+查询

User.java

public class User {
    public User() {
    }

    public User(int id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }

    public User(String username, String password) {
        this.username = username;
        this.password = password;
    }

    private int id;
    private String username;
    private String password;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

UserController.java

import com.wjn.bean.User;
import com.wjn.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping("/login.do")
    public ModelAndView login(User user){
        boolean flag = userService.login(user.getUsername(), user.getPassword());
        ModelAndView modelAndView=new ModelAndView();
        if (flag){
            modelAndView.setViewName("main");
        }else {
            modelAndView.setViewName("../failer");
        }
        return modelAndView;
    }

    @RequestMapping("/findAll.do")
    public ModelAndView findAll(){
        List<User> userList=userService.findAll();
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("userList",userList);
        modelAndView.setViewName("user-list");
        return modelAndView;
    }
}

UserDao.java

import com.wjn.bean.User;

import java.util.List;

public interface UserDao {
    User findUserByUserName(String username);

    List<User> findAll();
}

UserService.java

import com.wjn.bean.User;
import com.wjn.dao.UserDao;
import com.wjn.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService implements IUserService {
    @Autowired
    private UserDao userDao;

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

    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }
}

IUserService.java

import com.wjn.bean.User;

import java.util.List;

public interface IUserService {
    boolean login(String username,String password);

    List<User> findAll();
}

UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.wjn.dao.UserDao" >
    <select id="findUserByUserName" parameterType="String" resultType="user">
        select * from tb_user where username=#{username}
    </select>

    <select id="findAll" resultType="user">
        select * from tb_user
    </select>
</mapper>

aside.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
   pageEncoding="UTF-8" isELIgnored="false"%>
<aside class="main-sidebar">
   <!-- sidebar: style can be found in sidebar.less -->
   <section class="sidebar">
      <!-- Sidebar user panel -->
      <div class="user-panel">
         <div class="pull-left image">
            <img src="${pageContext.request.contextPath}/img/user2-160x160.jpg"
               class="img-circle" alt="User Image">
         </div>
         <div class="pull-left info">
            <a href="#"><i class="fa fa-circle text-success"></i> 在线</a>
         </div>
      </div>

      <!-- sidebar menu: : style can be found in sidebar.less -->
      <ul class="sidebar-menu">
         <li class="header">菜单</li>
         <li id="admin-index"><a
            href="#"><i
               class="fa fa-dashboard"></i> <span>首页</span></a></li>

         <li class="treeview"><a href="#"> <i class="fa fa-cogs"></i>
               <span>系统管理</span> <span class="pull-right-container"> <i
                  class="fa fa-angle-left pull-right"></i>
            </span>
         </a>
            <ul class="treeview-menu">
               <li id="system-setting">
                  <a
                  href="/user/findAll.do"> <i
                     class="fa fa-circle-o"></i> 用户管理
               </a>
               </li>
               <li id="system-setting"><a
                  href="#"> <i
                     class="fa fa-circle-o"></i> 角色管理
               </a></li>

            </ul>

         </li>


      </ul>
   </section>
   <!-- /.sidebar -->
</aside>