jdbc 数据库连接

import java.sql.Connection;
import java.sql.DriverManager;
public class DbUtil {
private String dbUrl="jdbc:mysql://localhost:3306/db_book";
private String dbUserName="root";
private String dbPassword="123456";
private String jdbcName="com.mysql.jdbc.Driver";
/**
* 获取数据库连接
* @return
* @throws Exception
*/
public Connection getCon() throws Exception{
Class.forName(jdbcName);
Connection
con=DriverManager.getConnection(dbUrl,dbUserName,dbPassword);
return con;
}
/**
* 关闭数据库连接
* @param con
* @throws Exception
*/
public void closeCon(Connection con) throws Exception{
if(con!=null){
con.close();
}
}
public static void main(String[] args) {
DbUtil dbUtil=new DbUtil();
try {
dbUtil.getCon();
System.out.println("数据库连接成功");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}