1.系統功能

2.環境配置

JDK版本：1.8Mysql:8.0.13

3.數據庫

/* 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, ’楊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.工程截圖

1.登錄頁

2.主頁

3.查詢信息

4.新增信息

5.修改信息

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();}}/** * 連接數據庫 * * @return * @throws SQLException */public Connection getConnection() throws SQLException {return DriverManager.getConnection(url, userName, password);}/** * 釋放資源 */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('登錄通訊錄');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('用戶名：');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 碼：');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('登錄');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, '用戶名或密碼不正確!!!');}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 blocke.printStackTrace();} finally {}}}

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