Java实战之用Swing实现通讯录管理系统

一、系统介绍

 1.系统功能

• 登录系统

• 查询信息

• 新增信息

• 修改信息

• 删除信息

2.环境配置

JDK版本：1.8
Mysql:8.0.13

3.数据库

/*
Navicat Premium Data Transfer

Source Server         : MySQL
Source Server Type    : MySQL
Source Server Version : 80013
Source Host           : localhost:3306
Source Schema         : swing_address

Target Server Type    : MySQL
Target Server Version : 80013
File Encoding         : 65001

Date: 10/06/2021 23:56:16
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for my_address_book
-- ----------------------------
DROP TABLE IF EXISTS `my_address_book`;
CREATE TABLE `my_address_book`  (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `name` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `sex` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `telephone` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `mail` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `birthday` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `note` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8 COLLATE = utf8_bin ROW_FORMAT = Compact;

-- ----------------------------
-- Records of my_address_book
-- ----------------------------
INSERT INTO `my_address_book` VALUES (2, '杨XX', '男', '18911616917', '1@163.com', '20200107', 'XX');
INSERT INTO `my_address_book` VALUES (3, '222', '女', '22', '22', '22', '22');
INSERT INTO `my_address_book` VALUES (4, '1', '女', '1', '1', '1', '1');

-- ----------------------------
-- Table structure for my_address_login
-- ----------------------------
DROP TABLE IF EXISTS `my_address_login`;
CREATE TABLE `my_address_login`  (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `username` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 `password` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
 PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_bin ROW_FORMAT = Compact;

-- ----------------------------
-- Records of my_address_login
-- ----------------------------
INSERT INTO `my_address_login` VALUES (1, '1', '1');

SET FOREIGN_KEY_CHECKS = 1;

4.工程截图

二、系统展示

1.登录页

2.主页

3.查询信息

4.新增信息

5.修改信息

三、部分代码

DBConn.java

package com.txl;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBConn {
private static String driverName = "com.mysql.cj.jdbc.Driver";
private static String url = "jdbc:mysql://localhost:3306/swing_address?serverTimezone=UTC";
private static String userName = "root";
private static String password = "admin";
private Connection conn;
private Statement stmt;

public DBConn() {
try {
Class.forName(driverName);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}

/**
* 连接数据库
*
* @return
* @throws SQLException
*/
public Connection getConnection() throws SQLException {
return DriverManager.getConnection(url, userName, password);
}

/**
* 释放资源
*/
public void dispose() {
try {
if (conn != null) {
conn.close();
}
if (stmt != null) {
stmt.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}

}

Login.java

package com.txl;

import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;

import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JPasswordField;

public class Login {

public static void main(String args[]) {
Login l=new Login();
l.showUI();
}

public void showUI() {
javax.swing.JFrame login=new javax.swing.JFrame();
login.setTitle("登录通讯录");
login.setSize(340,230);
login.setDefaultCloseOperation(3);
login.setLocationRelativeTo(null);
login.setResizable(false);

java.awt.FlowLayout fl=new java.awt.FlowLayout(FlowLayout.CENTER,5,5);
login.setLayout(fl);

JLabel labname=new JLabel();
labname.setText("用户名：");
labname.setPreferredSize(new java.awt.Dimension(60, 60));
login.add(labname);

JTextField textname=new JTextField();
textname.setPreferredSize(new java.awt.Dimension(250, 30));
login.add(textname);
JLabel labpassword=new JLabel();
labpassword.setText("密     码：");
labpassword.setPreferredSize(new java.awt.Dimension(60, 60));
login.add(labpassword);

JPasswordField jp=new JPasswordField();
jp.setPreferredSize(new java.awt.Dimension(250, 30));
login.add(jp);

javax.swing.JButton button=new javax.swing.JButton();
button.setText("登录");
button.setPreferredSize(new java.awt.Dimension(100, 40));
login.add(button);
login.setVisible(true);
button.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {

DBConn dbconn = new DBConn();
Statement stmt = null;
ResultSet rs = null;
try {
stmt = dbconn.getConnection().createStatement();
rs = stmt.executeQuery("select * from my_address_login where username='"+textname.getText()+"' and password='"+jp.getText()+"'");
if (rs.next()) {
new MyAddressBook();
login.dispose();
}else{
JOptionPane.showMessageDialog(null, "用户名或密码不正确!!!");
}
rs.close();
} catch (SQLException e1) {
e1.printStackTrace();
} finally {
try {
if (stmt != null) {
stmt.close();
}
if (rs != null) {
rs.close();
}
} catch (SQLException e1) {
e1.printStackTrace();
}

}
}
});

}
}

Test.java

package com.txl;

import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;

public class Test {
public static void main(String[] args) {
DBConn dbconn = new DBConn();;;;;
try {
for(int i =0 ;i<1000000;i++){
String sql = "insert into student(name, age)values('XXX"+i+"',30)";
PreparedStatement pstmt = dbconn.getConnection().prepareStatement(sql);
System.out.println(sql);
pstmt.execute(sql);
pstmt.close();
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
}

}
}

来源：https://blog.csdn.net/helongqiang/article/details/117793756