课程作业1-简单课程设计作业——个人通讯录数据库系统（java，MySQL）
总结介绍：本次个人通讯录数据库系统主要目的是为了做出一个功能齐全、简单易用的信息管理系统提高保存联系人效率，由于能力有限，界面做的有点不好看，还有在登录的编程只做到将登录名和密码设为固定的字符值，修改只能从代码处进行修改，未做到可注册多个用户，后续会继续完善。通过本次课程设计深刻体验到自己还对于课堂知识未能做到融会贯通，对数据库的语言已经感到陌生，未能熟练应用，这提醒了我应该对学习过的知识温故，不然会把知识丢掉，而且要经常应用。
程序代码：
1.登录操作
2.实现的其他操作通讯录的增删改查
个人通讯录数据库系统信息保存
个人通讯录数据库系统信息删除
个人通讯录数据库系统信息修改
个人通讯录数据库系统信息部分和全部查找
代码块
Menu.java
package b;
import javax.swing.*;
import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
public class Menu extends JFrame{
TextField text1=new TextField(50);
TextField text2=new TextField(50);
TextField text3=new TextField(50);
TextField text4=new TextField(50);
TextField text5=new TextField(50);
TextField text6=new TextField(50);
TextField t1=new TextField(50);
TextField t2=new TextField(50);
TextField t3=new TextField(50);
TextField t4=new TextField(50);
TextField t5=new TextField(50);
TextField t6=new TextField(50);
TextField ta1=new TextField(5);
TextField ta2=new TextField(5);
TextField ta3=new TextField(5);
TextArea txt1 =new TextArea(50,50);
JButton b1=new JButton("清除");
JButton b2=new JButton("保存");
JButton b3=new JButton("修改");
JButton b4=new JButton("删除");
JButton b5=new JButton("查询");
Label l1=new Label(" 输入姓名 :");
Label l2=new Label(" 输入年龄 :");
Label l3=new Label(" 输入性别 :");
Label l4=new Label(" 输入电话 :");
Label l5=new Label(" 输入地址 :");
Label l6=new Label(" 输入其他 :");
Label a1=new Label(" 输入姓名 :");
Label a2=new Label(" 输入年龄 :");
Label a3=new Label(" 输入性别 :");
Label a4=new Label(" 输入电话 :");
Label a5=new Label(" 输入地址 :");
Label a6=new Label(" 输入其他 :");
Label a7=new Label("(输入姓名即可删除)");
Label la1=new Label("姓名:");
Label la2=new Label("年龄:");
Label la3=new Label("性别:");
Label la4=new Label(" ");
Label la8=new Label(" ");
Label la9=new Label(" ");
Label la11=new Label(" ");
Label la12=new Label(" ");
Label la5=new Label("");
Label la6=new Label("");
Label la7=new Label("");
JMenuBar bar;
JMenu file,sear,dele,order;
JMenuItem name,sex,age,show,clear,sall,dall,oage,oname;
JPanel ff=new JPanel();
JPanel f1=new JPanel();
JPanel f2=new JPanel();
JPanel f3=new JPanel();
JPanel f4=new JPanel();
JPanel f5=new JPanel();
JTabbedPane Tpan=new JTabbedPane();//定义分页面板对象
public Menu() //构造方法实现图形化界面
{
super("通讯录");//用jframe设置title
ff=(JPanel)this.getContentPane();//ff对象获取框架
text1.setLocation(900, 200);
text1.setSize(130, 20);
text2.setLocation(900, 200);
text2.setSize(130, 20);
f1.setVisible(true);
f1.setLocation(900, 200);
f1.setSize(130, 20);
f1.setLayout(new FlowLayout());//设置页面的布局
f1.add(l1);
f1.add(text1);
f1.add(l2);
f1.add(text2);
f1.add(l3);
f1.add(text3);
f1.add(l4);
f1.add(text4);
f1.add(l5);
f1.add(text5);
f1.add(l6);
f1.add(text6);
f1.add(b1);
f1.add(b2);
f2.setLayout(new BorderLayout(10,50)); //设计f2的布局
bar=new JMenuBar();
sear=new JMenu("查找");
file=new JMenu("文件");
order=new JMenu("排序");
dele=new JMenu("删除");
name =new JMenuItem("姓名");
sex =new JMenuItem("性别");
age =new JMenuItem("年龄");
show =new JMenuItem("显示");
clear=new JMenuItem("清空");
sall =new JMenuItem("查找全部");
dall =new JMenuItem("删除全部");
oage =new JMenuItem("年龄排序");
oname=new JMenuItem("姓名排序");
bar.add(file);
bar.add(order);
bar.add(sear);
bar.add(dele);
sear.add(sall);
order.add(oage);
order.add(oname);
dele.add(dall);
file.add(show);
file.add(clear);
setJMenuBar(bar);//现实或隐藏此组件
setVisible(true);
//设置文本框
f2.add(txt1,BorderLayout.CENTER);
f2.add(bar ,BorderLayout.NORTH);
f2.add(f4 ,BorderLayout.WEST);
f2.add(la5 ,BorderLayout.EAST);
f2.add(la6 ,BorderLayout.SOUTH);
//****************************************************************************
b1.addActionListener(new clean());
b2.addActionListener(new sav());
b3.addActionListener(new alter());
b4.addActionListener(new delec());
b5.addActionListener(new search()); //添加相应的监听者
show.addActionListener(new shower());
sall.addActionListener(new shower());
dall.addActionListener(new dall());
clear.addActionListener(new clean());
oname.addActionListener(new order());
oage.addActionListener(new order());
//*************************************************************************************
ff.add(Tpan);//把两个容器放到分页面板tpan中然后放入同一个容器ff中
Tpan.add(f1,0);
Tpan.add(f2,1);
Tpan.add(f3,2);
Tpan.setTitleAt(0, "输入信息");
Tpan.setTitleAt(1, "查看信息");
Tpan.setTitleAt(2, "修改信息");
Tpan.setSelectedIndex(0); //设置初始页
//设置第三个面板***********************************************************************************
f1.setLayout(new FlowLayout());
f3.add(a1); f3.add(t1);
f3.add(a2); f3.add(t2);
f3.add(a3); f3.add(t3);
f3.add(a4); f3.add(t4);
f3.add(a5); f3.add(t5);
f3.add(a6); f3.add(t6);
f3.add(b3); f3.add(b4);
f3.add(a7);
//****************设置第二个中的West面板************************************************
f4.setLayout(new GridLayout(4,5));
f4.add(la1);f4.add(ta1);
f4.add(la2);f4.add(ta2);
f4.add(la3);f4.add(ta3);
f4.add(la4);f4.add(b5);
f4.add(la7);
f4.add(la8);f4.add(la9);
f4.add(la11);f4.add(la12);
txt1.setSize(50, 50);
/***************************************************************************
setSize(500,400);
show();
}
class clean implements ActionListener{
//实现“清除”功能
public void actionPerformed(ActionEvent e){
Object source=e.getSource();
if(source==b1)
text1.setText("");
text2.setText("");
text3.setText("");
text4.setText("");
text5.setText("");
text6.setText("");
txt1 .setText("");
}
}
class dall implements ActionListener{
//类dall实现删除全部数据
public void actionPerformed(ActionEvent e)
{
String driver="com.mysql.jdbc.Driver";
//jdbc协议：数据库子协议：主机：端口/连接的数据库
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
try{
//加载驱动程序
// 通过得到字节码对象的方式加载静态代码块，从而注册驱动程序
Class.forName(driver); //建立连接
Connection con=DriverManager.getConnection(url,use,password);//执行sql语句
Statement stmt=con.createStatement();
String sql="delete from ziliao";
stmt.executeUpdate(sql);
}
catch(Exception ce)
{
ce.printStackTrace();
}
}
}
class shower implements ActionListener{
//类shower用来实现将数据从文件读如到文本区域中
public void actionPerformed(ActionEvent e)
{
Object source=e.getSource();
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
if(source==show | source==sall)
{
try
{
Class.forName(driver);
Connection con=DriverManager.getConnection(url,use,password);
Statement stmt=con.createStatement();
String sql="select * from ziliao ";
ResultSet rs=stmt.executeQuery(sql);
txt1 .setText("");
while(rs.next())
{
txt1.insertText("其他： "+rs.getObject(6)+"\n\n\n",0);
txt1.insertText("地址： "+rs.getString(5)+"\n",0);
txt1.insertText("电话： "+rs.getString(4)+"\n",0);
txt1.insertText("性别： "+rs.getString(3)+"\n",0);
txt1.insertText("年龄： "+rs.getString(2)+"\n",0);
txt1.insertText("姓名： "+rs.getString(1)+"\n",0);
}
rs.close();
stmt.close();
}
catch(Exception ce)
{
ce.printStackTrace();
}
}
}}
class order implements ActionListener{
//order 用来实现排序功能
public void actionPerformed(ActionEvent e)
{
Object source=e.getSource();
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
if(source==oname)
{
try
{
Class.forName(driver);
Connection con=DriverManager.getConnection(url,use,password);
Statement stmt=con.createStatement();
String sql="select * from ziliao order by sname";
ResultSet rs=stmt.executeQuery(sql);
txt1 .setText("");
while(rs.next())
{
txt1.insertText("其他： "+rs.getObject(6)+"\n\n\n",0);
txt1.insertText("地址： "+rs.getString(5)+"\n",0);
txt1.insertText("电话： "+rs.getString(4)+"\n",0);
txt1.insertText("性别： "+rs.getString(3)+"\n",0);
txt1.insertText("年龄： "+rs.getString(2)+"\n",0);
txt1.insertText("姓名： "+rs.getString(1)+"\n",0);
}
rs.close();
stmt.close();
}
catch(Exception ce)
{
ce.printStackTrace();
}
}
if(source==oage)
{
try
{
Class.forName(driver);
Connection con=DriverManager.getConnection(url,use,password);
Statement stmt=con.createStatement();
String sql="select * from ziliao order by sage desc";
ResultSet rs=stmt.executeQuery(sql);
txt1 .setText("");
while(rs.next())
{
txt1.insertText("其他： "+rs.getObject(6)+"\n\n\n",0);
txt1.insertText("地址： "+rs.getString(5)+"\n",0);
txt1.insertText("电话： "+rs.getString(4)+"\n",0);
txt1.insertText("性别： "+rs.getString(3)+"\n",0);
txt1.insertText("年龄： "+rs.getString(2)+"\n",0);
txt1.insertText("姓名： "+rs.getString(1)+"\n",0);
}
rs.close();
stmt.close();
}
catch(Exception ce)
{
ce.printStackTrace();
}
}
}}
class sav implements ActionListener{
//类sav用来实现将数据读入到数据库中
public void actionPerformed(ActionEvent e)
{
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
try
{
Class.forName(driver);
Connection con=DriverManager.getConnection(url,use,password);
Statement stmt=con.createStatement();
String sql="insert into ziliao values('"+text1.getText()+"','"+text2.getText()+"','"+text3.getText()+"','"+text4.getText()+"','"+text5.getText()+"','"+text6.getText()+"')";
if (text1.getText().length() == 0|text2.getText().length() ==0|text3.getText().length() == 0|text4.getText().length() == 0|text5.getText().length() == 0|text6.getText().length() == 0)
{
String t="错误";
String d="请输入整信息后保存";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE; //错误的处理
JOptionPane.showMessageDialog(null,d,t,dtype);
text1.setText("");
text2.setText("");
text3.setText("");
text4.setText("");
text5.setText("");
text6.setText("");
}
else if(text3.getText().equals("男")||text3.getText().equals("女")){
stmt.executeUpdate(sql);
String t="成功";
String d="保存成功";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
text1.setText("");
text2.setText("");
text3.setText("");
text4.setText("");
text5.setText("");
text6.setText("");
}
else {
String t="错误";
String d="请重新输入性别";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE; //错误的处理
JOptionPane.showMessageDialog(null,d,t,dtype);
text3.setText("");
}
}
catch(SQLException ex) // 捕捉异常
{
String t="错误";
String d="年龄、电话应为数字";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE; //错误的处理
JOptionPane.showMessageDialog(null,d,t,dtype);
while (ex != null)
{
ex = ex.getNextException();
}
}
catch(Exception ce)
{
ce.printStackTrace();
}
}
}
class alter implements ActionListener{
//修改按钮
public void actionPerformed(ActionEvent e) // 处理修改按钮的ActionEvent
{
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
try
{
try {
Class.forName(driver);
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
}
Connection con=DriverManager.getConnection(url,use,password);
Statement stmt=con.createStatement();
if (t1.getText().length() == 0)
{
String t="错误";
String d="姓名为必填项目";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
}
else {
if (t2.getText().length() != 0)
stmt.executeUpdate("update ziliao set sage='" +
t2.getText() + "' where sname='" +
t1.getText() + "'"); // 更新表中姓名相关的年龄记录
if (t3.getText().length() != 0)
stmt.executeUpdate("update ziliao set sex='" +
t3.getText() + "' where sname='" +
t1.getText() + "'"); // 更新表中姓名相关的性别记录
if (t4.getText().length() != 0)
stmt.executeUpdate("update ziliao set telephone='" +
t4.getText() + "' where name='" +
t1.getText() + "'"); // 更新表中与姓名相关的电话记录
if (t5.getText().length() != 0)
stmt.executeUpdate("update ziliao set address='" +
t5.getText() + "' where sname='" +
t1.getText() + "'"); // 更新表中与姓名相关的地址的记录
if (t6.getText().length() != 0)
stmt.executeUpdate("update ziliao set other='" +
t6.getText() + "' where sname='" +
t1.getText() + "'"); // 更新表中与姓名相关的其他的记录
}
if (t2.getText().length() == 0 &t3.getText().length() == 0 &t4.getText().length() == 0&t5.getText().length() == 0&t6.getText().length() == 0)
{
String t="错误";
String d="修改不成功请重新输入";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
t1.setText("");
t2.setText("");
t3.setText("");
t4.setText("");
t5.setText("");
t6.setText("");
}
else {
String t="成功";
String d="修改成功";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
t1.setText("");
t2.setText("");
t3.setText("");
t4.setText("");
t5.setText("");
t6.setText("");
}
}
catch(SQLException ex) // 捕捉异常
{
String t="错误";
String d="修改类型错误电话年龄为数字";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
t1.setText("");
t2.setText("");
t3.setText("");
t4.setText("");
t5.setText("");
t6.setText("");
}
}
}
class delec implements ActionListener
{
public void actionPerformed(ActionEvent e) // 处理修改按钮的ActionEvent
{
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
try
{
Class.forName(driver); // 实例化JDBC-ODBC桥的驱动
Connection con=DriverManager.getConnection(url,use,password); // 连接数据库
String sql="select sname from ziliao";
Statement stmt=con.createStatement();
ResultSet rs = stmt.executeQuery(sql);
if (rs.next()==false) // 判断数据库中是否有要删除的记录，如没有则显示提示框
{
t1.setText("");
String t="提示";
String d="没有您要删除的记录";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
}
else
{
String sql2="delete from ziliao where sname='"+t1.getText()+"'";
stmt.executeUpdate(sql2); // 删除表中对应姓名的数据记录
// 清空信息框
t1.setText("");
t2.setText("");
t3.setText("");
t4.setText("");
t5.setText("");
t6.setText("");
String t="提示";
String d="删除记录成功";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
}
}
catch(SQLException ex) // 捕捉异常
{
while (ex != null)
{
ex = ex.getNextException();
}
}
catch(Exception ex )
{
ex.printStackTrace();
}
}
}
class search implements ActionListener
{
public void actionPerformed(ActionEvent e) // 处理查询按钮的ActionEvent
{
String driver="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/test";
String use="root";
String password="123456";
try
{
Class.forName(driver); // 实例化JDBC-ODBC桥的驱动
Connection con=DriverManager.getConnection(url,use,password); // 连接数据库
String sql = null;
Statement stmt=con.createStatement();
if (ta1.getText().length() == 0&ta2.getText().length() == 0&ta3.getText().length() == 0)
{
String t="错误";
String d="您没有输入要查询的项目";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
}
else {
if (ta1.getText().length() != 0)
sql="select * from ziliao where sname='" +
ta1.getText() + "'"; // 查询表中相关姓名的记录
if (ta2.getText().length() != 0)
sql="select * from ziliao where sage='" +
ta2.getText() + "'"; // 查询表中相关年龄的记录
if (ta3.getText().length() != 0)
sql="select * from ziliao where sex='" +
ta3.getText() + "'"; // 查询表中相关性别的记录
}
ResultSet rs = stmt.executeQuery(sql);
while(rs.next())
{
txt1 .setText("");
txt1.insertText("其他： "+rs.getObject(6)+"\n\n\n",0);
txt1.insertText("地址： "+rs.getString(5)+"\n",0);
txt1.insertText("电话： "+rs.getString(4)+"\n",0);
txt1.insertText("性别： "+rs.getString(3)+"\n",0);
txt1.insertText("年龄： "+rs.getString(2)+"\n",0);
txt1.insertText("姓名： "+rs.getString(1)+"\n",0);
}
rs.close();
stmt.close();
if (txt1.getText().length() == 0)
{
String t="错误";
String d="表中没有你要查询的记录";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
ta1.setText("");
ta2.setText("");
ta3.setText("");
}
else {
String t="成功";
String d="查找成功";
int dtype=JOptionPane.PLAIN_MESSAGE;
dtype=JOptionPane.WARNING_MESSAGE;
JOptionPane.showMessageDialog(null,d,t,dtype);
ta1.setText("");
ta2.setText("");
ta3.setText("");
}
}
catch(SQLException ex) // 捕捉异常
{
while (ex != null)
{
ex = ex.getNextException();
}
}
catch(Exception ex )
{
ex.printStackTrace();
}
}
}
public static void main(String args[])
{
Menu app=new Menu();
app.addWindowListener
(
new WindowAdapter()
{
public void windowClosing(WindowEvent e){
System.exit(0);}
}
);
}
}
ShowFlowLayout.java
package cjb;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JFrame;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.swing.*;
public class ShowFlowLayout extends JFrame {
static Connection con = null;
public ShowFlowLayout() {
setLayout(new FlowLayout(FlowLayout.LEFT, 15, 25));
}
public static void main(String[] args) {
final ShowFlowLayout frame = new ShowFlowLayout();
JLabel jlbl = new JLabel(" 欢迎使用通讯录数据库系统 ");
frame.add(jlbl);
JLabel jlb2 = new JLabel("用户名 ");
frame.add(jlb2);
final JTextField jtf = new JTextField(16);
frame.add(jtf);
JLabel jlb3 = new JLabel(" 密码 ");
frame.add(jlb3);
final JTextField jtf2 = new JTextField(16);
frame.add(jtf2);
JButton jbt = new JButton(" 登录 ");
frame.add(jbt);
JButton jbt2 = new JButton(" 退出 ");
frame.add(jbt2);
frame.setTitle("通讯录数据库系统 ");
frame.setLocation(900, 200);
frame.setSize(230, 380);
frame.setVisible(true);
jbt.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (jtf.getText().equals("1111111") && jtf2.getText().equals("123456")) {
frame.dispose();
new Menu();
} else
JOptionPane.showMessageDialog(null, " 用户名或密码错！");
}
});
jbt2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
}
}