/*
 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;

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(shù)據(jù)庫(kù)
	 * 
	 * @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();
		}
	}

}

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(hù)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(hù)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();
					}

				}
			}
		});
		
		
	}
}

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 {
		}
	
	}
}