package com.yitong.cn.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class ConnectionDB {
private static final String DBDRIVER = "com.mysql.jdbc.Driver";
private static final String DBUSER = "root";
private static final String DBPASSWORD = "mysqladmin";
private static Connection conn ; //定義全局變量
public static Connection getConnection(){
try {
// 加載驅動程序
Class.forName(DBDRIVER);
// 連續數據庫
conn = DriverManager.getConnection(DBURL, DBUSER, DBPASSWORD);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection conn){
if(conn!=null){
try {
conn.close();
} catch (Exception e) {
}
}
}
public static void main(String[] args) {
Connection conn = ConnectionDB.getConnection();
System.out.println(conn);
if(conn!=null){
System.out.println("數據庫連接成功");
ConnectionDB.closeConnection(conn);
}
}
}
