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 {
}
}
}
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