人员管理程序

（1）package org.lxh.useradmin.dao;import java.util.List;import org.lxh.useradmin.vo.User;public interface IUserDAO /* * 表示数据库的增加操作 * * param user * return * throws Exception */public boolean doCreate(User user) throws Exception;public boolean doUpdate(User user) throws Exception;/* * 表示删除操作，按编号删除 * * param id * return * throws Exception */public boolean doDelete(int id) throws Exception;/* * 表示数据库的查询操作 * param id * return * throws Exception */public User findById(int id) throws Exception;/* * 查询的时候将返回一组对象 * param keyWord * return * throws Exception */public List findAll(String keyWord) throws Exception;（2）package org.lxh.useradmin.dao.impl;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.util.ArrayList;import java.util.List;import org.lxh.useradmin.dao.IUserDAO;import org.lxh.useradmin.dbc.DataBaseConnection;import org.lxh.useradmin.vo.User;public class IUserDAOImpl implements IUserDAO private DataBaseConnection dbc = null;private Connection conn = null;public IUserDAOImpl() this.dbc = new DataBaseConnection();this.conn = this.dbc.getConnection();Overridepublic boolean doCreate(User user) throws Exception boolean flag = false;PreparedStatement pstmt = null;String sql = INSERT INTO user(name,sex,birthday) VALUES (?,?,?) ;try pstmt = this.conn.prepareStatement(sql);pstmt.setString(1, user.getName(); / 所有的内容从user类中取出pstmt.setString(2, user.getSex(); / 所有的内容从user类中取出pstmt.setDate(3, new java.sql.Date(user.getBirthday().getTime();if (pstmt.executeUpdate() 0) / 至少已经更新了一行flag = true; catch (Exception e) throw e; finally / 不管如何抛出，最终肯定是要进行数据库的关闭操作的if (pstmt != null) try pstmt.close(); catch (Exception e1) this.dbc.close();return flag;Overridepublic boolean doDelete(int id) throws Exception boolean flag = false;PreparedStatement pstmt = null;String sql = DELETE FROM user WHERE id=? ;try pstmt = this.conn.prepareStatement(sql);pstmt.setInt(1, id); / 所有的内容从user类中取出if (pstmt.executeUpdate() 0) / 至少已经更新了一行flag = true; catch (Exception e) throw e; finally / 不管如何抛出，最终肯定是要进行数据库的关闭操作的if (pstmt != null) try pstmt.close(); catch (Exception e1) this.dbc.close();return flag;Overridepublic boolean doUpdate(User user) throws Exception boolean flag = false;PreparedStatement pstmt = null;String sql = UPDATE user SET name=?,sex=?,birthday=? WHERE id=?;try pstmt = this.conn.prepareStatement(sql);pstmt.setString(1, user.getName(); / 所有的内容从user类中取出pstmt.setString(2, user.getSex(); / 所有的内容从user类中取出pstmt.setDate(3, new java.sql.Date(user.getBirthday().getTime();pstmt.setInt(4, user.getId();if (pstmt.executeUpdate() 0) / 至少已经更新了一行flag = true; catch (Exception e) throw e; finally / 不管如何抛出，最终肯定是要进行数据库的关闭操作的if (pstmt != null) try pstmt.close(); catch (Exception e1) this.dbc.close();return flag;Overridepublic List findAll(String keyWord) throws Exception List all = new ArrayList();PreparedStatement pstmt = null;String sql = SELECT id,name,sex,birthday FROM user WHERE name LIKE ? OR sex LIKE ? OR birthday LIKE ?;try pstmt = this.conn.prepareStatement(sql);pstmt.setString(1, % + keyWord + %);pstmt.setString(2, % + keyWord + %);pstmt.setString(3, % + keyWord + %);ResultSet rs = pstmt.executeQuery(); / 执行查询操作while (rs.next() User user = new User();user.setId(rs.getInt(1);user.setName(rs.getString(2);user.setSex(rs.getString(3);user.setBirthday(rs.getDate(4);all.add(user); / 所有的内容向集合中插入rs.close() ; catch (Exception e) throw e; finally / 不管如何抛出，最终肯定是要进行数据库的关闭操作的if (pstmt != null) try pstmt.close(); catch (Exception e1) this.dbc.close();return all;Overridepublic User findById(int id) throws Exception User user = null ;PreparedStatement pstmt = null;String sql = SELECT id,name,sex,birthday FROM user WHERE id=?;try pstmt = this.conn.prepareStatement(sql);pstmt.setInt(1, id) ;ResultSet rs = pstmt.executeQuery(); / 执行查询操作if (rs.next() user = new User();user.setId(rs.getInt(1);user.setName(rs.getString(2);user.setSex(rs.getString(3);user.setBirthday(rs.getDate(4);rs.close() ; catch (Exception e) throw e; finally / 不管如何抛出，最终肯定是要进行数据库的关闭操作的if (pstmt != null) try pstmt.close(); catch (Exception e1) this.dbc.close();return user;（3）package org.lxh.useradmin.dbc;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;public class DataBaseConnection private static final String DBDRIVER = org.gjt.mm.mysql.Driver ;private static final String DBURL = jdbc:mysql:/localhost:3306/mldn ;private static final String DBUSER = root ;private static final String DBPASS = mysqladmin ;private Connection conn = null ;public DataBaseConnection()try Class.forName(DBDRIVER) ; catch (ClassNotFoundException e) / TODO Auto-generated catch blocke.printStackTrace();try conn = DriverManager.getConnection(DBURL, DBUSER,DBPASS) ; catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace();public Connection getConnection()return this.conn ;public void close()if(this.conn!=null)try this.conn.close() ; catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace();（4）package org.lxh.useradmin.factory;import org.lxh.useradmin.dao.IUserDAO;import org.lxh.useradmin.dao.impl.IUserDAOImpl;public class DAOFactory public static IUserDAO getIUserDAOInstance()return new IUserDAOImpl() ;（5）package org.lxh.useradmin.test;import java.util.Iterator;import java.util.List;import org.lxh.useradmin.factory.DAOFactory;import org.lxh.useradmin.vo.User;public class TestAll public static void main(String args) throws Exception List allUser = DAOFactory.getIUserDAOInstance().findAll() ;Iterator iter = allUser.iterator() ;while(iter.hasNext()User user = iter.next() ;System.out.println(user);package org.lxh.useradmin.test;import org.lxh.useradmin.factory.DAOFactory;public class TestDelete public static void main(String args) throws Exception DAOFactory.getIUserDAOInstance().doDelete(2);package org.lxh.useradmin.test;import org.lxh.useradmin.factory.DAOFactory;import org.lxh.useradmin.vo.User;public class TestId public static void main(String args) throws Exception User user = DAOFactory.getIUserDAOInstance().findById(1) ;System.out.println(user);package org.lxh.useradmin.test;import java.util.Date;import org.lxh.useradmin.factory.DAOFactory;import org.lxh.useradmin.vo.User;public class TestInsert public static void main(String args) throws Exception User user = new User();user.setName(李兴华);user.setSex(男);user.setBirthday(new Date();DAOFactory.getIUserDAOInstance().doCreate(user);package org.lxh.useradmin.test;import java.util.Date;import org.lxh.useradmin.factory.DAOFactory;import org.lxh.useradmin.vo.User;public class TestUpdate public static void main(String args) throws Exception User user = new User();user.setName(张心);user.setSex(女);user.setId(2) ;user.setBirthday(new Date();DAOFactory.getIUserDAOInstance().do