java中JDBC連接Oracle數據庫

 

package com.xxxx.lunwen.test;
import java.sql.*;
public class DBUtil {
    static
    {
        try
        {
            // 加載Oracle驅動程序
            Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
            System.out.println("oracle驅動程序加載中！");
        }
        catch(InstantiationException e1)
        {
            System.out.println("實例異常");
        }
        catch(IllegalAccessException e2)
        {
            System.out.println("訪問異常");
        }
        catch(ClassNotFoundException e3)
        {
            System.out.println("MySQL驅動類找不到");
        }
    }

    /***
     * 返回一個數據庫連接
     */
    public static Connection getConnection()
    {
        Connection connection = null;// 創建一個數據庫連接
        try
        {
            System.out.println("開始嘗試連接數據庫！");
            String url = "jdbc:oracle:thin:@127.0.0.1:1521:xkpt";//Oracle的默認數據庫名
            String user = "xkpt";// 系統默認的用戶名
            String password = "123456";// 安裝時設置的密碼
            connection = DriverManager.getConnection(url, user, password);// 獲取連接
            System.out.println(url);
            System.out.println("用戶名："+user+"\t"+"密碼：******");
            System.out.println("數據庫連接成功！");
            return connection;
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
    }

}