insert into user values(null,'测试用户1','password1');
insert into user values(null,'测试用户2','password2');
insert into user values(null,'测试用户3','password3');
insert into user values(null,'测试用户4','password4');
insert into user values(null,'测试用户5','password5');

package com.how2java.tmall.service;
 
import java.util.List;

import com.how2java.tmall.pojo.User;

public interface UserService {
    void add(User c);
    void delete(int id);
    void update(User c);
    User get(int id);
    List list();
}

package com.how2java.tmall.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.how2java.tmall.mapper.UserMapper;
import com.how2java.tmall.pojo.User;
import com.how2java.tmall.pojo.UserExample;
import com.how2java.tmall.service.UserService;

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    UserMapper userMapper;

    @Override
    public void add(User u) {
        userMapper.insert(u);
    }

    @Override
    public void delete(int id) {
        userMapper.deleteByPrimaryKey(id);
    }

    @Override
    public void update(User u) {
        userMapper.updateByPrimaryKeySelective(u);
    }

    @Override
    public User get(int id) {
        return userMapper.selectByPrimaryKey(id);
    }

    public List<User> list(){
        UserExample example =new UserExample();
        example.setOrderByClause("id desc");
        return userMapper.selectByExample(example);

    }

}

package com.how2java.tmall.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.how2java.tmall.pojo.User;
import com.how2java.tmall.service.UserService;
import com.how2java.tmall.util.Page;

@Controller
@RequestMapping("")
public class UserController {
    @Autowired
    UserService userService;
 
    @RequestMapping("admin_user_list")
    public String list(Model model, Page page){
        PageHelper.offsetPage(page.getStart(),page.getCount());

        List<User> us= userService.list();

        int total = (int) new PageInfo<>(us).getTotal();
        page.setTotal(total);

        model.addAttribute("us", us);
        model.addAttribute("page", page);

        return "admin/listUser";
    }

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
		 pageEncoding="UTF-8" import="java.util.*"%>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@include file="../include/admin/adminHeader.jsp"%>
<%@include file="../include/admin/adminNavigator.jsp"%>

<script>
</script>

<title>用户管理</title>

<div class="workingArea">
	<h1 class="label label-info" >用户管理</h1>

	<br>
	<br>

	<div class="listDataTableDiv">
		<table class="table table-striped table-bordered table-hover  table-condensed">
			<thead>
			<tr class="success">
				<th>ID</th>
				<th>用户名称</th>
			</tr>
			</thead>
			<tbody>
			<c:forEach items="${us}" var="u">
				<tr>
					<td>${u.id}</td>
					<td>${u.name}</td>
				</tr>
			</c:forEach>
			</tbody>
		</table>
	</div>

	<div class="pageDiv">
		<%@include file="../include/admin/adminPage.jsp" %>
	</div>

</div>

<%@include file="../include/admin/adminFooter.jsp"%>

	
    @RequestMapping("admin_user_list")
    public String list(Model model, Page page){
        PageHelper.offsetPage(page.getStart(),page.getCount());

        List<User> us= userService.list();

        int total = (int) new PageInfo<>(us).getTotal();
        page.setTotal(total);

        model.addAttribute("us", us);
        model.addAttribute("page", page);

        return "admin/listUser";
    }

				<c:forEach items="${us}" var="u">
				<tr>
					<td>${u.id}</td>
					<td>${u.name}</td>
				</tr>
				</c:forEach>