Java Web项目慧心人力资源管理系统

迈不过友情╰ 2022-11-15 15:44 256阅读 0赞

> **题目：慧心人力资源管理系统**
> 
> **文档下载：**[https://download.csdn.net/download/weixin\_44893902/16336711][https_download.csdn.net_download_weixin_44893902_16336711]
> 
> **完整项目下载：**[https://download.csdn.net/download/weixin\_44893902/16393518][https_download.csdn.net_download_weixin_44893902_16393518]

**目录**

一、语言和环境

二、实现功能

三、数据库设计

四、具体要求及推荐实现步骤

五、评分标准

六、实现代码

--------------------

# **一、语言和环境** #

1.  实现语言：JAVA语言。
2.  环境要求：MyEclipse/Eclipse + Tomcat + MySql。
3.  使用技术：Jsp+Servlet+JavaBean
4.  数据库技术：JDBC

# **二、实现功能** #

**人力资源公司为了提高管理效率，需开发一套B/S结构人力资源管理系统，对员工信息进行管理，主要功能如下：**

1、首页默认显示现有的所有员工信息

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70][] 图1 首页显示所有员工信息

2、鼠标悬停某行数据,该行样式发生变化

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 1][] 图2 鼠标悬停样式效果

3、表格最后一行为统计行，显示当前一共有多少条数据

![20210402110644486.png][] 图3 统计行效果

4、 点击右下“新增”按钮进入新增页面,输入相关信息后点击添加，完成新增员工信息功能，并且返回到首页显示最新数据，如图4、5所示

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 2][] 图4 添加员工信息

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 3][] 图5 添加成功后首页刷新数据

5、点击每行最后删除功能时弹出提示框,用户确认后删除该行数据并刷新最新员工数据，如图6所示。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 4][] 图6 删除确认提示窗口

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 5][] 图7 删除后刷新数据

6、点击每行更新链接后跳转到更新页面,更新界面显示出要修改的员工信息，更新成功后跳转到首页显示最新数据，如图8、9所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 6][]  图8 更新员工数据

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 7][] 图9 更新后刷新数据

# **三、数据库设计** #

1.  创建数据库（HRDB）。
2.  创建员工信息表（TB\_EMP），结构如下。

<table style="margin-left:6.75pt;"> 
 <tbody> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">字段名</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">说明</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">字段类型</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">长度</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">备注</p> </td> 
  </tr> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">id</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">员工编号</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">int</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">&nbsp;</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">主键，自增，增量为1</p> </td> 
  </tr> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">name</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">员工姓名</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">varchar</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">50</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">不能为空</p> </td> 
  </tr> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">gender</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">员工性别</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">varchar</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">50</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">不能为空</p> </td> 
  </tr> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">birthday</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">员工生日</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">varchar</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">50</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">不能为空</p> </td> 
  </tr> 
  <tr> 
   <td style="vertical-align:top;width:87.4pt;"> <p style="margin-left:0pt;">phone</p> </td> 
   <td style="vertical-align:top;width:66.85pt;"> <p style="margin-left:0pt;">手机号码</p> </td> 
   <td style="vertical-align:top;width:78.9pt;"> <p style="margin-left:0pt;">varchar</p> </td> 
   <td style="vertical-align:top;width:45.55pt;"> <p style="margin-left:0pt;">11</p> </td> 
   <td style="vertical-align:top;width:121.3pt;"> <p style="margin-left:0pt;">不能为空</p> </td> 
  </tr> 
 </tbody> 
</table>

# **四、具体要求及推荐实现步骤** #

1.  创建数据库，创建员工信息表，添加测试数据（至少添加4条测试数据）。
2.  创建web工程并创建各个包，导入工程所需的jar文件。
3.  创建Employee实体类。
4.  创建BaseDAO工具类使用JDBC完成数据表数据的增删改查。创建Servlet相关类完成功能对应的用户请求处理。
5.  编写JSP页面进行数据展示，以及新增、修改的界面。

# **五、评分标准** #

<table style="margin-left:25.65pt;width:441.9pt;"> 
 <tbody> 
  <tr> 
   <td colspan="3" style="width:441.9pt;"> <p><strong><strong>题目：</strong></strong>慧心人力资源管理系统</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>数据库（提交数据库脚本）</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p>创建数据库及添加测试数据</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>正确创建和编写实体类，包含所有属性及方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:0pt;">2</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>正确创建BaseDao类，包含获取连接及关闭资源方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">35</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>正确创建EmployeeDAO类或者EmployeeMapper接口，使用jdbc</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">10</p> </td> 
   <td style="width:374pt;"> <p>正确创建查询数据返回集合的方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p style="margin-left:0pt;">正确创建删除数据的方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">10</p> </td> 
   <td style="width:374pt;"> <p style="margin-left:0pt;">正确创建更新数据的方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">10</p> </td> 
   <td style="width:374pt;"> <p style="margin-left:0pt;">正确创建新增数据的方法</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">30</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>Servlet相关处理类</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">10</p> </td> 
   <td style="width:374pt;"> <p style="margin-left:0pt;">正确创建处理全部数据查询查询请求Servlet类，web.xml中请求映射配置或注解正确&nbsp;</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p>正确创建处理新增数据请求Servlet类，web.xml中请求映射配置或注解正确</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p>正确创建处理删除数据请求Servlet类，web.xml中请求映射配置或注解正确</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p style="margin-left:0pt;">正确创建处理更新数据时单个数据查询请求Servlet类，web.xml中请求映射配置或注解正确</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p>正确创建处理数据更新请求Servlet类，web.xml中请求映射配置或注解正确</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">18</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>JSP相关页面</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">10</p> </td> 
   <td style="width:374pt;"> <p>展示所有数据页面 7分</p> <p>显示统计信息3分</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">3</p> </td> 
   <td style="width:374pt;"> <p>修改员工信息页面</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td style="width:374pt;"> <p>新增员工信息页面</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:0pt;">5</p> </td> 
   <td colspan="2" style="width:408.85pt;"> <p>总体编程技术</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">2</p> </td> 
   <td style="width:374pt;"> <p>编码命名规范</p> </td> 
  </tr> 
  <tr> 
   <td style="width:33.05pt;"> <p style="margin-left:24pt;">&nbsp;</p> </td> 
   <td style="width:34.85pt;"> <p style="margin-left:0pt;">3</p> </td> 
   <td style="width:374pt;"> <p>程序正常运行，无异常</p> </td> 
  </tr> 
  <tr> 
   <td colspan="2" style="width:67.9pt;"> <p><strong><strong>总分</strong></strong></p> </td> 
   <td style="width:374pt;"> <p><strong><strong>100</strong></strong><strong><strong>分</strong></strong></p> </td> 
  </tr> 
 </tbody> 
</table>

# 六、实现代码 #

## 1、目录结构： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 8][]

## 2、使用到的包： ##

![20210403183927871.png][]

## 3、Java代码： ##

### util ###

BaseDao.java

package util;
    
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.SQLException;
    import java.util.Properties;
    
    
    public class BaseDao {
    	
    	private static String url="jdbc:mysql://localhost:3306/hrdb?useUnicode=true&characterEncoding=UTF-8&useSSL=false";
    	private static String userName="root";
    	private static String password="root";
    	private static String driver="com.mysql.jdbc.Driver";
    	private static Connection connection;
    	private static Properties properties = new Properties();
    	
    	static{
    		try {
    			Class.forName(driver);
    		} catch (ClassNotFoundException e) {
    			e.printStackTrace();
    		}
    	}
    	
    	public static Connection getConnection(){
    		try {
    			if(connection==null||connection.isClosed()){
    				connection = DriverManager.getConnection(url,userName,password);
    			}
    		} catch (SQLException e) {
    			e.printStackTrace();
    		}
    		return connection;
    	}
    
    	public static void close(Connection connection) throws Exception {
    		try {
    			if (connection != null) {
    				connection.close();
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    			throw new Exception();
    		}
    	}
    	public static void main(String[] args) {
    		System.out.println(getConnection());
    	}
    }

### entity ###

TbEmp.java

package entity;
    
    import java.io.Serializable;
    
    public class TbEmp implements Serializable{
    
    	private static final long serialVersionUID = 1L;
    	private Integer id;
    	private String name;
    	private String gender;
    	private String birthday;
    	private String phone;
    	public TbEmp() {
    		super();
    	}
    	@Override
    	public String toString() {
    		return "TbEmp [id=" + id + ", name=" + name + ", gender=" + gender + ", birthday=" + birthday + ", phone="
    				+ phone + "]";
    	}
    	public TbEmp(Integer id, String name, String gender, String birthday, String phone) {
    		super();
    		this.id = id;
    		this.name = name;
    		this.gender = gender;
    		this.birthday = birthday;
    		this.phone = phone;
    	}
    	public Integer getId() {
    		return id;
    	}
    	public void setId(Integer id) {
    		this.id = id;
    	}
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	public String getGender() {
    		return gender;
    	}
    	public void setGender(String gender) {
    		this.gender = gender;
    	}
    	public String getBirthday() {
    		return birthday;
    	}
    	public void setBirthday(String birthday) {
    		this.birthday = birthday;
    	}
    	public String getPhone() {
    		return phone;
    	}
    	public void setPhone(String phone) {
    		this.phone = phone;
    	}
    	
    }

### mapper ###

EmpMapper.java

package mapper;
    
    import java.util.List;
    
    import entity.TbEmp;
    
    public interface EmpMapper {
    	//查询所有
    	List<TbEmp> queryAll();
    	//添加
    	int addEmp(TbEmp tbEmp);
    	//更新
    	int updateEmp(TbEmp tbEmp);
    	//删除
    	int del(int id);
    }

### service ###

EmpService.java

package service;
    
    import java.sql.PreparedStatement;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.util.ArrayList;
    import java.util.List;
    
    import com.mysql.jdbc.Connection;
    
    import entity.TbEmp;
    import mapper.EmpMapper;
    import util.BaseDao;
    
    public class EmpService implements EmpMapper {
    
    	@Override
    	public List<TbEmp> queryAll() {
    		Connection conn = null;
    		String sql = null;
    		try {
    			sql = "select * from tb_emp";
    			conn = (Connection) BaseDao.getConnection();
    			PreparedStatement ps = conn.prepareStatement(sql);
    			ResultSet resultSet = ps.executeQuery();
    			ArrayList<TbEmp> arrayList = new ArrayList<TbEmp>();
    			while (resultSet.next()) {
    				TbEmp tbEmp = new TbEmp();
    				tbEmp.setId(resultSet.getInt("id"));
    				tbEmp.setName(resultSet.getString("name"));
    				tbEmp.setGender(resultSet.getString("gender"));
    				tbEmp.setBirthday(resultSet.getString("birthday"));
    				tbEmp.setPhone(resultSet.getString("phone"));
    				arrayList.add(tbEmp);
    			}
    			if (arrayList.size() > 0) {
    				return arrayList;
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			try {
    				conn.close();
    			} catch (SQLException e) {
    				e.printStackTrace();
    			}
    		}
    		return null;
    	}
    
    	@Override
    	public int addEmp(TbEmp tbEmp) {
    		Connection connection = null;
    		try {
    			String sql = "insert into tb_emp(name,gender,birthday,phone) values(?,?,?,?)";
    			connection = (Connection) BaseDao.getConnection();
    			PreparedStatement ps = connection.prepareStatement(sql);
    			ps.setString(1, tbEmp.getName());
    			ps.setString(2, tbEmp.getGender());
    			ps.setString(3, tbEmp.getBirthday());
    			ps.setString(4, tbEmp.getPhone());
    			int add = ps.executeUpdate();
    			if (add > 0) {
    				return add;
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			try {
    				connection.close();
    			} catch (SQLException e) {
    				e.printStackTrace();
    			}
    		}
    		return 0;
    	}
    
    	@Override
    	public int updateEmp(TbEmp tbEmp) {
    		Connection connection = null;
    		try {
    			String sql = "update tb_emp set name='" + tbEmp.getName() + "',gender='" + tbEmp.getGender()
    					+ "',birthday='" + tbEmp.getBirthday() + "',phone='" + tbEmp.getPhone() + "' where id='"
    					+ tbEmp.getId() + "'";
    			System.out.println(sql);
    			connection = (Connection) BaseDao.getConnection();
    			PreparedStatement ps = connection.prepareStatement(sql);
    			int update = ps.executeUpdate();
    			if (update > 0) {
    				return update;
    			}
    		} catch (Exception e) {
    		}
    		return 0;
    	}
    
    	@Override
    	public int del(int id) {
    		Connection connection = null;
    		String sql = null;
    		try {
    			sql = "delete from tb_emp where id=" + id;
    			connection = (Connection) BaseDao.getConnection();
    			PreparedStatement ps = connection.prepareStatement(sql);
    			int delUpdate = ps.executeUpdate();
    			if (delUpdate > 0) {
    				return delUpdate;
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			try {
    				connection.close();
    			} catch (SQLException e) {
    				e.printStackTrace();
    			}
    		}
    		return 0;
    	}
    
    }

### controller ###

EmpController.java

package controller;
    
    import java.util.List;
    
    import entity.TbEmp;
    import mapper.EmpMapper;
    import service.EmpService;
    
    public class EmpController {
    	EmpMapper empMapper=new EmpService();
    	public List<TbEmp> allInfoList(){
    		List<TbEmp> queryAll = empMapper.queryAll();
    		return queryAll;
    	}
    	//添加
    	public int addEmp(TbEmp tbEmp){
    		return empMapper.addEmp(tbEmp);
    	}
    	//更新
    	public int updataEmp(TbEmp tbEmp){
    		return empMapper.updateEmp(tbEmp);
    	}
    	//删除
    	public int delInfo(int id){
    		return empMapper.del(id);
    	}
    	
    }

### servlet ###

EmpShowServlet.java

package servlet;
    
    import java.io.IOException;
    import java.util.List;
    
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    
    import controller.EmpController;
    import entity.TbEmp;
    
    @WebServlet("/EmpShowServlet")
    public class EmpShowServlet extends HttpServlet {
    	private static final long serialVersionUID = 1L;
           
        public EmpShowServlet() {
            super();
        }
    
    	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		doPost(request, response);
    	}
    
    	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		request.setCharacterEncoding("utf-8");
    		response.setCharacterEncoding("utf-8");
    		EmpController controller=new EmpController();
    		List<TbEmp> tbemp = controller.allInfoList();	
    		HttpSession session = request.getSession();
    		session.setAttribute("empsList", tbemp);
    		request.getRequestDispatcher("main.jsp").forward(request, response);
    	}
    
    }

AddEmpServlet.java

package servlet;
    
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import controller.EmpController;
    import entity.TbEmp;
    
    @WebServlet("/AddEmpServlet")
    public class AddEmpServlet extends HttpServlet {
    	private static final long serialVersionUID = 1L;
    
    	public AddEmpServlet() {
    		super();
    	}
    
    	protected void doGet(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		doPost(request, response);
    	}
    
    	protected void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		request.setCharacterEncoding("utf-8");
    		response.setCharacterEncoding("utf-8");
    		EmpController controller = new EmpController();
    		String name = request.getParameter("name");
    		String gender = request.getParameter("gender");
    		String birthday = request.getParameter("birthday");
    		String phone = request.getParameter("phone");
    		TbEmp emp = new TbEmp(0, name, gender, birthday, phone);
    		int addEmp = controller.addEmp(emp);
    		if (addEmp > 0) {
    			response.sendRedirect("EmpShowServlet");
    		}
    	}
    
    }

DelServlet.java

package servlet;
    
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import controller.EmpController;
    
    @WebServlet("/DelServlet")
    public class DelServlet extends HttpServlet {
    	private static final long serialVersionUID = 1L;
           
        public DelServlet() {
            super();
        }
    
    	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		doPost(request, response);
    	}
    
    	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		EmpController controller=new EmpController();
    		String id=request.getParameter("id");
    		int id1=Integer.parseInt(id);
    		int del = controller.delInfo(id1);
    		if (del>0) {
    			response.sendRedirect("EmpShowServlet");
    		}
    	}
    
    }

UpdatEmpServlet.java

package servlet;
    
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import controller.EmpController;
    import entity.TbEmp;
    
    @WebServlet("/UpdatEmpServlet")
    public class UpdataEmpServlet extends HttpServlet {
    	private static final long serialVersionUID = 1L;
           
        public UpdataEmpServlet() {
            super();
        }
    
    	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		doPost(request, response);
    	}
    
    	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    		request.setCharacterEncoding("utf-8");
    		response.setCharacterEncoding("utf-8");
    		EmpController controller=new EmpController();
    		Integer id= Integer.parseInt(request.getParameter("id").toString());
    		String name = request.getParameter("name");
    		String gender = request.getParameter("gender");
    		String birthday = request.getParameter("birthday");
    		String phone = request.getParameter("phone");
    		TbEmp emp=new  TbEmp(id,name,gender,birthday,phone);
    		System.out.println(emp.toString());
    		int updatEmp = controller.updataEmp(emp);
    		if (updatEmp>0) {
    			response.sendRedirect("EmpShowServlet");
    		}
    	}
    
    }

## 4、HTML代码： ##

### main.jsp ###

<%@page import="entity.TbEmp"%>
    <%@page import="java.util.List"%>
    <%@ page language="java" contentType="text/html; charset=utf-8"
    	pageEncoding="utf-8"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>慧心人力资源管理系统</title>
    <style type="text/css">
    body {
    	width: 100%;
    }
    
    .wrap_table {
    	width: 60%;
    	margin: 0 auto;
    	text-align: center;
    }
    
    table {
    	text-align: center;
    	margin: 0 auto;
    }
    
    table tr:nth-last-child(1) {
    	padding-right: 20px;
    }
    
    table th {
    	padding: 10px;
    }
    
    table:nth-last-child(2) tr:hover, table tr:hover a {
    	color: white;
    	background-color: black;
    }
    
    table:nth-last-child(1) tr {align ="left";
    	
    }
    
    table:nth-last-child(1) td {
    	padding: 10px;
    }
    
    table:nth-last-child(2) td {
    	padding: 5px;
    }
    
    #end {
    	text-align: right;
    }
    
    #name {
    	margin-bottom: 10px;
    }
    
    #price {
    	margin-bottom: 10px;
    }
    
    #num {
    	margin-bottom: 10px;
    }
    
    #type {
    	margin-bottom: 10px;
    }
    </style>
    </head>
    <body >
    	<div class="wrap_table">
    		<table border="1" cellspacing="0" cellpadding="0" height="300px">
    			<caption align="top"
    				style="font-size: 1.6rem; height: 50px; font-weight: bold;">人力资源管理</caption>
    			<tr>
    				<th width="80">员工编号</th>
    				<th width="120">员工姓名</th>
    				<th width="80">员工性别</th>
    				<th width="140">员工生日</th>
    				<th width="140">员工手机</th>
    				<th width="120">操作</th>
    			</tr>
    			<%
    				List<TbEmp> empsList = (List<TbEmp>) session.getAttribute("empsList");
    				int i = 0;
    			%>
    			<c:forEach items="${empsList}" var="emp">
    				<tr>
    					<td>${emp.id }</td>
    					<td>${emp.name }</td>
    					<td>${emp.gender }</td>
    					<td>${emp.birthday }</td>
    					<td>${emp.phone }</td>
    					<td><input type="button" onclick="update(this)" class="updata"
    						value="更新" /> <input type="button" onclick="del(${emp.id })"
    						value="删除" /></td>
    				</tr>
    
    			</c:forEach>
    			<tr>
    				<td colspan="6" id="end"><span>共计<%=empsList.size() + 1%>条数据
    				</span> <a href="addEmp.jsp">新增</a></td>
    			</tr>
    
    		</table>
    		<div
    			style="width: 500px; height: 400px; border: 1px solid #000; background-color: white; display: none; position: absolute; left: 40%; top: 10%;"
    			id="UpdataDiv">
    			<form action="UpdatEmpServlet" method="post" id="UpdataForm">
    				<br /> <br />
    				<table border="1" cellspacing="0" cellpadding="0"
    					style="text-align: left;" width="400" height="200">
    					<caption align="top"
    						style="font-size: 1.6rem; height: 50px; font-weight: bold;">更新员工信息</caption>
    					<tr style="display: none">
    						<td><input type="text" name="id" id="id" value=""></td>
    					</tr>
    					<tr>
    						<td>员工姓名：<input type="text" name="name" id="name" value=""></td>
    					</tr>
    					<tr>
    						<td>员工性别：<input id="man" type="radio" name="gender" value="男" />男
    							<input id="woman" type="radio" name="gender" value="女">女
    						</td>
    					</tr>
    					<tr>
    						<td>员工生日：<input id="birthday" name="birthday" type="date"
    							value="" /></td>
    					</tr>
    					<tr>
    						<td>员工号码：<input type="text" name="phone" id="phone" value=""></td>
    					</tr>
    					<tr align="center">
    						<td><input type="submit" value="提交"> <input
    							type="button" value="取消" class="updata2"></td>
    					</tr>
    				</table>
    			</form>
    		</div>
    	</div>
    	<script src="js/jquery-1.9.1.min.js" type="text/javascript"></script>
    	<script type="text/javascript">
    		$(".updata").click(function(){
    			$("#UpdataDiv").css("display","block");
    			
    			});
    		$(".updata2").click(function(){
    			$("#UpdataDiv").css("display","none");
    			});
    			
    		</script>
    	<script type="text/javascript">
    		function update(obj) {
    			   var id=$(obj).parents("tr").children("td").eq(0).text();
    			   var name=$(obj).parents("tr").children("td").eq(1).text();
    			   var gender=$(obj).parents("tr").children("td").eq(2).text();
    			   var birthday=$(obj).parents("tr").children("td").eq(3).text();
    			   var phone=$(obj).parents("tr").children("td").eq(4).text();
    			   document.getElementById("id").value = id;
    			   document.getElementById("name").value = name;
    			   if (gender=="男") {
    					document.getElementById("man").checked = true
    			   }
    			   if (gender=="女") {
    			   		document.getElementById("woman").checked = true
    			   }
    			   document.getElementById("birthday").value = birthday;
    			   document.getElementById("phone").value = phone;  
    			}
    		function  del(id) {
    			 if (confirm("确定删除该数据？")) {
    				window.location.href="DelServlet?id="+id;
    	         }
    		}
    		function a(){
    			$.ajax({  
    	    		url:"EmpShowServlet",//servlet文件的名称
    	    		type:"POST",
    	    		success:function(e){
    	    			alert("servlet调用成功！");
    	    		}
    	    	});
    			
    		}
    		</script>
    </body>
    </html>

### addEmp.jsp ###

<%@ page language="java" contentType="text/html; charset=UTF-8"
    	pageEncoding="UTF-8"%>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>慧心人力资源管理系统-添加员工信息</title>
    <style type="text/css">
    body {
    	width: 100%;
    }
    
    .wrap_table {
    	width: 40%;
    	margin: 0 auto;
    	text-align: center;
    }
    
    table {
    	text-align: left;
    	margin: 0 auto;
    	height: 200px;
    	width: 400px;
    }
    
    table td {
    	padding: 10px;
    }
    
    .button_class input {
    	padding: 3px 10px;
    }
    </style>
    </head>
    <body>
    	<div class="wrap_table">
    		<form action="AddEmpServlet" method="post">
    			<table border="1" cellspacing="0" cellpadding="0">
    				<caption align="top"
    					style="font-size: 1.6rem; height: 50px; font-weight: bold;">添加员工信息</caption>
    				<tr>
    					<td>员工姓名：</td>
    					<td><input type="text" name="name" id="name" value="" /></td>
    				</tr>
    				<tr>
    					<td>性别：</td>
    					<td><input id="man" type="radio" checked="checked"
    						name="gender" value="男" />男 <input id="woman" type="radio"
    						name="gender" / value="女">女</td>
    				</tr>
    				<tr>
    					<td>员工生日：</td>
    					<td><input id="birthday" name="birthday" type="date" value="" />
    				</tr>
    				<tr>
    					<td>员工手机：</td>
    					<td><input type="text" name="phone" id="" value="" /></td>
    				</tr>
    				<tr>
    					<td colspan="2" align="center" class="button_class"><input
    						type="submit" name="" id="" value="添加" /> <input type="reset"
    						name="" id="" value="重置" /></td>
    				</tr>
    			</table>
    		</form>
    	</div>
    </body>
    </html>

[https_download.csdn.net_download_weixin_44893902_16336711]: https://download.csdn.net/download/weixin_44893902/16336711
[https_download.csdn.net_download_weixin_44893902_16393518]: https://download.csdn.net/download/weixin_44893902/16393518
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[20210403183927871.png]: https://img-blog.csdnimg.cn/20210403183927871.png