JDBC操作之连接和关闭mysql数据库

首先导入jdbc所用的jar包

然后分别调用getCon()和closeCon方法

import java.sql.DriverManager;
import java.sql.SQLException;
import com.mysql.jdbc.Connection;
public class DbUtil {
private String dbUrl="jdbc:mysql://localhost:3306/student";
private String dbUserName="root";
private String dbPassword="root123";
private String jdbcName="com.mysql.jdbc.Driver";
public Connection getCon() throws Exception{
Class.forName(jdbcName);
Connection con=(Connection) DriverManager.getConnection(dbUrl, dbUserName, dbPassword);
return con;
}
public void closeCon(Connection con) throws SQLException{
if(con!=null){
con.close();
}
}
}