connectionmanager.java

来自「是个swing 写的好的通信程序,里面有数据库和原码,运行就可以了,希望好好的」· Java 代码 · 共 40 行

package smoker.db;

import java.sql.*;
import java.util.*;
import javax.swing.*;

public class ConnectionManager {
	private static ResourceBundle res = ResourceBundle.getBundle("smoker/db/DBConfig");
	private static Connection conn;
	private static String driver;
	private static String url;
	private static String username;
	private static String password;

	private static void init() {
		driver = res.getString("Driver");
		url = res.getString("URL");
		username = res.getString("UserName");
		password = res.getString("Password");
	}

	public static Connection CreateConnection() {
		try {
			init();
			Class.forName(driver);
			conn = DriverManager.getConnection(url, username, password);
			return conn;
		} catch (ClassNotFoundException e) {
			JOptionPane.showMessageDialog(null, "ClassNotFoundException:\n"
					+ e.getMessage());
			System.exit(0);
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "SQLException:\n"
					+ e.getMessage(), "数据库连接失败", JOptionPane.ERROR_MESSAGE);
			System.exit(1);
		}
		return null;
	}
}