web用戶管理系統(tǒng)源代碼

1、//連接數(shù)據(jù)庫代碼package com.tools;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;public class DBUtil {public static Connection getConnection() throws ClassNotFoundException, SQLException{/

2、/ 1. 導(dǎo)入 Jar 包// 2. 加載驅(qū)動Class.forName(“oracle.jdbc.driver.OracleDriver“);// 3. 獲得數(shù)據(jù)庫連接Connection conn = DriverManager.getConnection(“jdbc:oracle:thin:@localhost:1521:orcl“, “scott“, “tiger“);return conn;}}//EMP 表的增刪改查功能

3、實(shí)現(xiàn)package com.dao;import java.sql.Connection;import java.sql.Date;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.text.SimpleDateFormat;impor

4、t java.util.ArrayList;import com.bean.Emp;import com.tools.DBUtil;public class EmpDAO {public static void main(String[] args) throws ClassNotFoundException,SQLException {EmpDAO dao = new EmpDAO();dao.queryAll();}public A

5、rrayList queryAll() throws ClassNotFoundException,e.setManager(rs.getInt(“mgr“));e.setSal(rs.getFloat(“sal“));e.setComm(rs.getFloat(“comm“));Date d = rs.getDate(“hiredate“);java.util.Date dd = new java.util.Date(d.getTim

6、e());String str = dd.getYear() + 1900 + “-“ + (dd.getMonth() + 1) + “-“ + dd.getDate();e.setHiredate(str);e.setDeptno(rs.getInt(“deptno“));}// 7. 關(guān)閉rs.close();ps.close();conn.close();return e;}public void deleteById(int

7、id) throws ClassNotFoundException, SQLException {Connection conn = DBUtil.getConnection();String sql = “delete from emp where empno=?“;PreparedStatement ps = conn.prepareStatement(sql);ps.setInt(1, id);ps.executeUpdate()

8、;// 7. 關(guān)閉ps.close();conn.close();}public void add(Emp e) throws ClassNotFoundException, SQLException {Connection conn = DBUtil.getConnection();String sql = “insert into emp (“+ “empno, “+ // 員工編號“ename, “+ “job, “+ “mgr,