driver_name=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ooxx?useServerPrepStmts=true&cachePrepStmts=true
name=root
password=123456

?

package com.henu.utils;

import java.sql.*;

import java.util.ResourceBundle;

public class JDBCUtil {
????public static Connection getCon(){
????????ResourceBundle rb = ResourceBundle.getBundle("db");
????????Connection con = null;

????????try {
????????????Class.forName(rb.getString("driver_name"));
????????????con = DriverManager.getConnection(rb.getString("url"),rb.getString("name"),rb.getString("password"));

????????} catch (Exception e) {
????????????e.printStackTrace();
????????}
????????return con;
????}

????public static void close(Connection con, PreparedStatement ps, ResultSet rs){
????????if (con != null){
????????????try {
????????????????con.close();
????????????} catch (SQLException e) {
????????????????e.printStackTrace();
????????????}
????????}
????????if (ps != null){
????????????try {
????????????????ps.close();
????????????} catch (SQLException e) {
????????????????e.printStackTrace();
????????????}
????????}
????????if (rs != null){
????????????try {
????????????????rs.close();
????????????} catch (SQLException e) {
????????????????e.printStackTrace();
????????????}
????????}
????}


}

?

package com.henu.utils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.SimpleFormatter;

public class DateUtil {
????public static Date StringToDate(String str){
????????SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
????????Date date = new Date();
????????try {
????????????date = sdf.parse(str);
????????} catch (ParseException e) {
????????????e.printStackTrace();
????????}
????????return date;
????}
}

?

package com.henu.bean;

import java.util.Date;

public class Student {
????private int id;
????private String name;
????private int age;
????private Date date;

????public Student() {
????}

????public Student(String name, int age, Date date) {
????????this.name = name;
????????this.age = age;
????????this.date = date;
????}

????public Student(int id, String name, int age, Date date) {
????????this.id = id;
????????this.name = name;
????????this.age = age;
????????this.date = date;
????}

????public int getId() {
????????return id;
????}

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

????public String getName() {
????????return name;
????}

????public void setName(String name) {
????????this.name = name;
????}

????public int getAge() {
????????return age;
????}

????public void setAge(int age) {
????????this.age = age;
????}

????public Date getDate() {
????????return date;
????}

????public void setDate(Date date) {
????????this.date = date;
????}

????@Override
????public String toString() {
????????return "Student{" +
????????????????"id=" + id +
????????????????", name='" + name + '\'' +
????????????????", age=" + age +
????????????????", date=" + date +
????????????????'}';
????}
}

?

package com.henu.dao;

import com.henu.bean.Student;

import java.util.List;

public interface StudentDAO {

????int insert(Student stu);
????int delect(int id);
????void update(Student stu);
????Student findStuById(int id);
????Student findStuByName(String name);
????List<Student> findAll();

}

?

package com.henu.dao.Impl;

import com.henu.bean.Student;
import com.henu.dao.StudentDAO;
import com.henu.utils.JDBCUtil;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class StudentDAOImpl implements StudentDAO {
????@Override
????public int insert(Student stu) {
????????Connection con = JDBCUtil.getCon();

????????int res = 0;
????????String sql = "insert into student values (null,?,?,?)";
????????PreparedStatement ps = null;
// ???????ps.setString();
????????try {
????????????ps = con.prepareStatement(sql);
????????????ps.setObject(1,stu.getName());
????????????ps.setObject(2,stu.getAge());
????????????ps.setObject(3,stu.getDate());
????????????res = ps.executeUpdate();
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally {
????????????JDBCUtil.close(con,ps,null);
????????}
????????return res;
????}

????@Override
????public int delect(int id) {
????????Connection con = JDBCUtil.getCon();
????????PreparedStatement ps = null;
????????String sql = "delete from student where id=?";
????????int res = 0;
????????try {
????????????ps = con.prepareStatement(sql);
????????????ps.setInt(1,id);
????????????res = ps.executeUpdate();
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally {
????????????JDBCUtil.close(con,ps,null);
????????}
????????return res;
????}

????@Override
????public void update(Student stu) {
????????Connection con = JDBCUtil.getCon();
????????PreparedStatement ps = null;
????????String sql = " update student set name=?,age=?,birthday=? where id=? ";
????????try {
????????????ps = con.prepareStatement(sql);
????????????ps.setObject(1,stu.getName());
????????????ps.setObject(2,stu.getAge());
????????????ps.setObject(3,stu.getDate());
????????????ps.setObject(4,stu.getId());
????????????int res = ps.executeUpdate();
????????????System.out.println(res >0 ? "更新成功" : "更新失敗");
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally{
????????????JDBCUtil.close(con,ps,null);
????????}
????}

????@Override
????public Student findStuById(int id) {
????????Connection con = JDBCUtil.getCon();
????????PreparedStatement ps = null;
????????ResultSet rs = null;
????????Student stu = null;
????????String sql = " select *?from student where id=? ";
????????try {
????????????ps = con.prepareStatement(sql);
????????????ps.setInt(1,id);
????????????rs = ps.executeQuery();
????????????while(rs.next()){
????????????????stu = new Student(rs.getInt("id"),rs.getString("name"),
????????????????????????+rs.getInt("age"),rs.getDate("birthday"));
????????????}
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally{
????????????JDBCUtil.close(con,ps,rs);
????????}
????????return stu;
????}

????@Override
????public Student findStuByName(String name) {
????????Connection con = JDBCUtil.getCon();
????????PreparedStatement ps = null;
????????ResultSet rs = null;
????????Student stu = null;
????????String sql = " select *?from student where name=? ";
????????try {
????????????ps = con.prepareStatement(sql);
????????????ps.setString(1,name);
????????????rs = ps.executeQuery();
????????????while(rs.next()){
????????????????stu = new Student(rs.getInt("id"),rs.getString("name"),
????????????????????????+rs.getInt("age"),rs.getDate("birthday"));
????????????}
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally{
????????????JDBCUtil.close(con,ps,rs);
????????}
????????return stu;
????}

????@Override
????public List<Student> findAll() {
????????Connection con = JDBCUtil.getCon();
????????PreparedStatement ps = null;
????????ResultSet rs = null;
????????Student stu = null;
????????List<Student> list = new ArrayList<>();
????????String sql = " select *?from student";
????????try {
????????????ps = con.prepareStatement(sql);
????????????rs = ps.executeQuery();
????????????while(rs.next()){
????????????????stu = new Student(rs.getInt("id"),rs.getString("name"),
????????????????????????+rs.getInt("age"),rs.getDate("birthday"));
????????????????list.add(stu);
????????????}
????????} catch (SQLException e) {
????????????e.printStackTrace();
????????}finally{
????????????JDBCUtil.close(con,ps,rs);
????????}
????????return list;
????}
}

?

package com.henu.test;

import com.henu.bean.Student;
import com.henu.dao.Impl.StudentDAOImpl;
import com.henu.dao.StudentDAO;
import com.henu.utils.DateUtil;
import com.henu.utils.JDBCUtil;

import java.sql.Connection;
import java.util.Date;
import java.util.List;

public class Test {

????//測試數據庫測試類的連接
????@org.junit.Test
????public void ooxx1(){
????????Connection con = JDBCUtil.getCon();
????????System.out.println(con);
????????JDBCUtil.close(con,null,null);
????}
????//測試StringToDate的方法
????@org.junit.Test
????public void StringToDate(){
????????String str = "1997-10-24";
????????Date date = DateUtil.StringToDate(str);
????????System.out.println(date);
????}

????//實例化dao
????StudentDAO stuDAO = new StudentDAOImpl();
????//測試插入
????@org.junit.Test
????public void ooxx2(){
????????int res = stuDAO.insert(new Student("李冬",22,DateUtil.StringToDate("1997-10-27")));
// ???????Student stu = new Student();
// ???????stu.setName("李冬");
// ???????stu.setAge(22);
// ???????stu.setDate(DateUtil.StringToDate("1997-10-27"));
// ???????int res = stuDAO.insert(stu);
????????System.out.println(res>0? "插入正確" : "插入錯誤");
????}
????//測試刪除
????@org.junit.Test
????public void delete(){
????????int res = stuDAO.delect(3);
????????System.out.println(res>0? "刪除正確" : "刪除錯誤");
????}
????//測試更新
????@org.junit.Test
????public void update(){
????????stuDAO.update(new Student(4,"天使",18,DateUtil.StringToDate("1999-02-08")));
????}
????//測試查詢id
????@org.junit.Test
????public void findbyid(){
????????System.out.println(stuDAO.findStuById(1));
????}

????//測試查詢名字
????@org.junit.Test
????public void findbyname(){
????????System.out.println(stuDAO.findStuByName("天使"));
????}
????//測試查詢全部
????@org.junit.Test
????public void findall(){
????????List<Student> list = stuDAO.findAll();
????????for (Student s : list
?????????????) {
????????????System.out.println(s);
????????}
????}


}

?