SSM框架实现分页查询例子

项目结构

博客转载于 https://blog.csdn.net/peng_hong_fu/article/details/53645924

1.配置pom.xml

	4.0.0
	com.test
	TestMaven4
	war
	0.0.1-SNAPSHOT
	TestMaven4 Maven Webapp
	http://maven.apache.org
	
		
		4.3.3.RELEASE
		
		3.4.0
		
		1.7.7
		1.2.17
	

	
		
			junit
			junit
			4.12
			
			test
		
		
		
			org.springframework
			spring-core
			${spring.version}
		

		
			org.springframework
			spring-web
			${spring.version}
		
		
			org.springframework
			spring-oxm
			${spring.version}
		
		
			org.springframework
			spring-tx
			${spring.version}
		

		
			org.springframework
			spring-jdbc
			${spring.version}
		

		
			org.springframework
			spring-webmvc
			${spring.version}
		
		
			org.springframework
			spring-aop
			${spring.version}
		

		
			org.springframework
			spring-context-support
			${spring.version}
		

		
			org.springframework
			spring-test
			${spring.version}
		
		
		
			org.mybatis
			mybatis
			${mybatis.version}
		

		
		
			org.mybatis
			mybatis-spring
			1.3.0
		
		
		
			javax
			javaee-api
			7.0
		
		
		
			mysql
			mysql-connector-java
			5.1.25
		
		
		
			commons-dbcp
			commons-dbcp
			1.2.2
		
		
		
			jstl
			jstl
			1.2
		
		
		
		
			log4j
			log4j
			${log4j.version}
		


		
		
			com.alibaba
			fastjson
			1.1.41
		


		
			org.slf4j
			slf4j-api
			${slf4j.version}
		

		
			org.slf4j
			slf4j-log4j12
			${slf4j.version}
		
		
		
		
			com.fasterxml.jackson.core
			jackson-databind
			2.7.5
		
		
		
			commons-fileupload
			commons-fileupload
			1.3.1
		
		
			commons-io
			commons-io
			2.4
		
		
			commons-codec
			commons-codec
			1.9
		
		
		
			aspectj
			aspectjweaver
			1.5.4
		
	
	
		SSM-Project
		
			
			
				org.apache.maven.plugins
				maven-compiler-plugin
				
					1.8
					1.8
				
			
		
	

2.web.xml配置文件

	
	
		encodingFilter
		org.springframework.web.filter.CharacterEncodingFilter
		true
		
			encoding
			UTF-8
		
	
	
		encodingFilter
		/*
	
	
	
	
		contextConfigLocation
		classpath:applicationContext.xml
	
	
	
		org.springframework.web.context.ContextLoaderListener
	


	
	
	
		springDispatcherServlet
		org.springframework.web.servlet.DispatcherServlet
		
			contextConfigLocation
			classpath:springmvc.xml
		
		1
	

	
	
		springDispatcherServlet
		/
	

3.创建MySQL数据表

DROP TABLE IF EXISTS tb_user;
CREATE TABLE tb_user (
    id INT NOT NULL AUTO_INCREMENT,
    userName VARCHAR(40),
    password VARCHAR(100),
    email VARCHAR(40),
    phone VARCHAR(40),
    roleName VARCHAR(40),
    PRIMARY KEY(id)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

4.数据库配置文件

jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/test
username=root
password=root
initialSize=0 

maxActive=20 
 
maxIdle=20

minIdle=1

maxWait=60000

5.日志输出格式配置

log4j.properties

 log4j.rootLogger=INFO,Console,File  
#\u5B9A\u4E49\u65E5\u5FD7\u8F93\u51FA\u76EE\u7684\u5730\u4E3A\u63A7\u5236\u53F0  
log4j.appender.Console=org.apache.log4j.ConsoleAppender  
log4j.appender.Console.Target=System.out  
#\u53EF\u4EE5\u7075\u6D3B\u5730\u6307\u5B9A\u65E5\u5FD7\u8F93\u51FA\u683C\u5F0F\uFF0C\u4E0B\u9762\u4E00\u884C\u662F\u6307\u5B9A\u5177\u4F53\u7684\u683C\u5F0F  
log4j.appender.Console.layout = org.apache.log4j.PatternLayout  
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n  
  
#\u6587\u4EF6\u5927\u5C0F\u5230\u8FBE\u6307\u5B9A\u5C3A\u5BF8\u7684\u65F6\u5019\u4EA7\u751F\u4E00\u4E2A\u65B0\u7684\u6587\u4EF6  
log4j.appender.File = org.apache.log4j.RollingFileAppender  
#\u6307\u5B9A\u8F93\u51FA\u76EE\u5F55  
log4j.appender.File.File = logs/ssm.log  
#\u5B9A\u4E49\u6587\u4EF6\u6700\u5927\u5927\u5C0F  
log4j.appender.File.MaxFileSize = 10MB  
# \u8F93\u51FA\u6240\u4EE5\u65E5\u5FD7\uFF0C\u5982\u679C\u6362\u6210DEBUG\u8868\u793A\u8F93\u51FADEBUG\u4EE5\u4E0A\u7EA7\u522B\u65E5\u5FD7  
log4j.appender.File.Threshold = ALL  
log4j.appender.File.layout = org.apache.log4j.PatternLayout  
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n  

6.Spring 配置文件

applicationContext.xml

7.SpringMVC 配置文件

springmvc.xml

7.Java 文件

7.1实体类User和PageBean

user.java

package com.ssmtest.entity;
/**
 * 用户实体类
 * 对应数据表tb_user
 * @author Peng
 * @Date2016年12月13日上午9:36:23
 */
public class User {
    private Integer id;

    private String username;

    private String password;

    private String email;

    private String phone;

    private String rolename;
    //角色名称 系统管理员、销售主管、客户经理、高管

    
    public Integer getId() {
        return id;
    }

    public User() {
		super();
	}

	public User(String username, String password, String email, String phone, String rolename) {
		super();
		this.username = username;
		this.password = password;
		this.email = email;
		this.phone = phone;
		this.rolename = rolename;
	}

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

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username == null ? null : username.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email == null ? null : email.trim();
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone == null ? null : phone.trim();
    }

    public String getRolename() {
        return rolename;
    }

    public void setRolename(String rolename) {
        this.rolename = rolename == null ? null : rolename.trim();
    }

	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + username + ", password=" + password + ", email=" + email + ", phone="
				+ phone + ", rolename=" + rolename + "]";
	}
    
}

PageBean.java

package com.ssmtest.entity;

import java.util.List;
/**
 * 分页实体类
 * @author Peng
 * @Date2016年12月13日 上午9:40:10
 */
public class PageBean {

	private int currPage;//当前页数
    private int pageSize;//每页显示的记录数
    private int totalCount;//总记录数
    private int totalPage;//总页数
    private List lists;//每页的显示的数据
	
	public PageBean() {
		super();
	}

	public int getCurrPage() {
		return currPage;
	}

	public void setCurrPage(int currPage) {
		this.currPage = currPage;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public int getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(int totalCount) {
		this.totalCount = totalCount;
	}

	public int getTotalPage() {
		return totalPage;
	}

	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}

	public List getLists() {
		return lists;
	}

	public void setLists(List lists) {
		this.lists = lists;
	}
	
}

7.2 User实体类映射文件

UserMapper.xml

	
	
		
		
		
		
		
		
	

	
		id, userName, password, email, phone, roleName
	

	
	
		select
		
		from tb_user
		where id = #{id,jdbcType=INTEGER}
	

	
	
		select 
		
		 from tb_user 
		 where 
		 userName = #{username} 
		 and password = #{password} 
	
	
	
	
		select
		
		from tb_user
		
			limit #{start},#{size}
		
	

	
	
		select
		
		from tb_user
	

	
	
		select count(*) from tb_user
	

	
	
		delete from tb_user
		where id = #{id,jdbcType=INTEGER}
	

	
	
		insert into tb_user (id, userName, password,
		email, phone, roleName
		)
		values (#{id,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR},
		#{password,jdbcType=VARCHAR},
		#{email,jdbcType=VARCHAR}, #{phone,jdbcType=VARCHAR}, #{rolename,jdbcType=VARCHAR}
		)
	

	
	
		insert into tb_user
		
			
				id,
			
			
				userName,
			
			
				password,
			
			
				email,
			
			
				phone,
			
			
				roleName,
			
		
		
			
				#{id,jdbcType=INTEGER},
			
			
				#{username,jdbcType=VARCHAR},
			
			
				#{password,jdbcType=VARCHAR},
			
			
				#{email,jdbcType=VARCHAR},
			
			
				#{phone,jdbcType=VARCHAR},
			
			
				#{rolename,jdbcType=VARCHAR},
			
		
	

	
	
		update tb_user
		
			
				userName = #{username,jdbcType=VARCHAR},
			
			
				password = #{password,jdbcType=VARCHAR},
			
			
				email = #{email,jdbcType=VARCHAR},
			
			
				phone = #{phone,jdbcType=VARCHAR},
			
			
				roleName = #{rolename,jdbcType=VARCHAR},
			
		
		where id = #{id,jdbcType=INTEGER}
	

	
	
		update tb_user
		set userName = #{username,jdbcType=VARCHAR},
		password = #{password,jdbcType=VARCHAR},
		email = #{email,jdbcType=VARCHAR},
		phone = #{phone,jdbcType=VARCHAR},
		roleName = #{rolename,jdbcType=VARCHAR}
		where id = #{id,jdbcType=INTEGER}
	

7.3 Dao层接口

UserDao.java

package com.ssmtest.dao;

import java.util.HashMap;
import java.util.List;

import com.ssmtest.entity.User;

public interface UserDao {
	/**
	 * 根据主键删除一条用户数据
	 * @param id
	 * @return
	 */
    int deleteByPrimaryKey(Integer id);
    /**
     * 插入一条用户数据 ，可以不完整
     * @param record
     * @return
     */
    int insertSelective(User record);
    /**
     * 根据主键查询一条用户数据
     * @param id
     * @return
     */
    User selectByPrimaryKey(Integer id);
    /**
     * 用户登录
     * @param record
     * @return
     */
    User loginByUserNameAndPassword(User record);
    /**
     * 根据主键更新一条用户数据，可以不完整 -
     * @param record
     * @return
     */
    int updateByPrimaryKeySelective(User record);

    /**
     * 查询所有用户数据
     * @return
     */
    List selectUserList();
    /**
     * 查询用户记录总数
     * @return
     */
    int selectCount();
    /**
     * 分页操作，调用findByPage limit分页方法
     * @param map
     * @return
     */
    List findByPage(HashMap map);
}

7.4 Service层

userService.java

package com.ssmtest.service;

import java.util.List;

import com.ssmtest.entity.PageBean;
import com.ssmtest.entity.User;
/**
 * User类业务层接口
 * @author Peng
 * @Date2016年12月13日上午9:54:40
 */
public interface UserService {
	
	int deleteByPrimaryKey(Integer id);

    int insertSelective(User record);

    User selectByPrimaryKey(Integer id);
    
    User loginByUserNameAndPassword(User record);
    
    List selectUserList();
    
    int selectCount();
    
    int updateByPrimaryKeySelective(User record);

    PageBean findByPage(int currentPage);
}

UserServiceImpl.java

package com.ssmtest.service.impl;

import java.util.HashMap;
import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.ssmtest.dao.UserDao;
import com.ssmtest.entity.PageBean;
import com.ssmtest.entity.User;
import com.ssmtest.service.UserService;
/**
 * User类业务层实现类
 * @author Peng
 * @Date2016年12月13日上午9:54:56
 */
@Service("userService")
public class UserServiceImpl implements UserService {

	@Resource
	private UserDao userDao;
	@Override
	public int deleteByPrimaryKey(Integer id) {
		return userDao.deleteByPrimaryKey(id);
	}

	@Override
	public int insertSelective(User record) {
		
		return userDao.insertSelective(record);
	}

	@Override
	public User selectByPrimaryKey(Integer id) {
	
		return userDao.selectByPrimaryKey(id);
	}

	@Override
	public int updateByPrimaryKeySelective(User record) {
		return userDao.updateByPrimaryKeySelective(record);
	}

	@Override
	public List selectUserList() {
		
		return userDao.selectUserList();
	}

	@Override
	public int selectCount() {
		return userDao.selectCount();
	}

	@Override
	public User loginByUserNameAndPassword(User record) {
		
		return userDao.loginByUserNameAndPassword(record);
	}

	@Override
	public PageBean findByPage(int currentPage) {
		HashMap map = new HashMap();
		PageBean pageBean = new PageBean();
		
	    //封装当前页数
        pageBean.setCurrPage(currentPage);
        
		//每页显示的数据
		int pageSize=5;
		pageBean.setPageSize(pageSize);
		
		//封装总记录数
		int totalCount = userDao.selectCount();
		pageBean.setTotalCount(totalCount);
		
		//封装总页数
		double tc = totalCount;
        Double num =Math.ceil(tc/pageSize);//向上取整
        pageBean.setTotalPage(num.intValue());
      
		map.put("start",(currentPage-1)*pageSize);
		map.put("size", pageBean.getPageSize());
		//封装每页显示的数据
		List lists = userDao.findByPage(map);
		pageBean.setLists(lists);
		
		return pageBean;
	}
}

7.5 controller

package com.ssmtest.controller;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;

import com.ssmtest.entity.User;
import com.ssmtest.service.UserService;

@SessionAttributes("currentUser")
@Controller
public class UserController {

	@Resource
	private UserService userService;
	/**
	 * 用户登录
	 * @param user
	 * @param request
	 * @return
	 * @throws Exception
	 */
	@RequestMapping("/login")
	public String login(@RequestParam("userName")String userName,
			@RequestParam("password")String password,Model model) throws Exception{
		User user = new User();
		user.setUsername(userName);
		user.setPassword(password);
		User userresult = userService.loginByUserNameAndPassword(user);
		if(userresult!=null){
			//登录成功
			List lists = userService.selectUserList();
			model.addAttribute("userLists", lists);//回显用户信息
			model.addAttribute("currentUser", userresult.getUsername());	
			return "redirect:main";
		}
		return "error";
	}
	@RequestMapping("/main")
	public String  main(@RequestParam(value="currentPage",defaultValue="1",required=false)int currentPage,Model model){
		model.addAttribute("pagemsg", userService.findByPage(currentPage));//回显分页数据
		return "main";
	}
	/**
	 * 跳到编辑页面
	 * @param currentPage
	 * @param model
	 * @return
	 */
	@RequestMapping("/edit")
	public String editpage(@RequestParam("id") int id,Model model){
		User user =userService.selectByPrimaryKey(id);
		model.addAttribute("returnUser", user);
		return "edit";
	}
	/**
	 * 保存用户数据
	 * @return
	 */
	@RequestMapping("/save")
	public String save(User user){
		System.out.println(user.toString());
		if(user.getId()==null){
			//id为null是保存
			userService.insertSelective(user);
		}else{
			//有id值为修改
			userService.updateByPrimaryKeySelective(user);
		}	
		return "redirect:main";
	}
	/**
	 * 删除用户数据
	 * @param id
	 * @return
	 */
	@RequestMapping("/delete")
	public String delete(@RequestParam("id") int id){
		userService.deleteByPrimaryKey(id);
		return "redirect:main";
	}
	/**
	 * 添加一个用户数据
	 * @return
	 */
	@RequestMapping("/add")
	public String add(Model model){
		model.addAttribute("returnUser", new User());
		return "edit";
	}
}

8.JSP页面

index.jsp

<%@ page language="java" import="java.util.*" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>








欢迎登陆
	
	

		用户名:

		密  码:

		
	

main.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>








	欢迎你：${currentUser}
	

 	<%-- 当前用户：${pageScope.currentUser} 

	当前用户：${requestScope.currentUser}-${roleName} 有重定向数据就访问不到

	当前用户：${sessionScope.currentUser}-${roleName} 可以使用
 --%> 
	

	 添加用户

	
		没有任何用户信息！
	
	
		
				

		

			

				
编号
				
用户名
				
密码
				
邮件
				
联系电话
				
职位
				
Edit
				
Delete
			
			
			

					
${u.id }
					
${u.username }
					
${u.password }
					
${u.email }
					
${u.phone }
					
${u.rolename }
					
Edit
					
Delete
				
					
		
	
	
	






   第${requestScope.pagemsg.currPage }/ ${requestScope.pagemsg.totalPage}页  
   总记录数：${requestScope.pagemsg.totalCount }  每页显示:${requestScope.pagemsg.pageSize}  
   
       
           [首页]  
           [上一页]  
       
       
       
           [下一页]  
           [尾页]  
       
   

error.jsp

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







	登录发生错误，请重新登录

edit.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>







	欢迎你：${currentUser}
	

	
		
		用户名:

		密码:

		邮件:

		联系电话:

		职位:
				请选择职位
				客户经理
				高管
				销售主管
				系统管理员
			

			
	

码代码下载https://download.csdn.net/download/sinat_37001576/10502521