DBHelper我是copy上一个jsp项目的代码，但就是要报异常这个怎么解决？
package util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DBHelper {
//数据库驱动
private static final String driver = "com.mysql.jdbc.Driver";
//链接数据库的URL地址
private static final String url="jdbc:mysql://localhost:3306/shopping?useUnicode=true&characterEncoding=UTF-8";
//数据库的用户名
private static final String username = "root";
//数据库的密码
private static final String password = "root";
private static Connection conn = null;
//静态代码块负责加载驱动
static
{
try
{
Class.forName(driver);
}
catch(Exception ex)
{
ex.getStackTrace();
}
}
//单例模式返回数据库连接对象
public static Connection getConnection() throws Exception
{
if(conn==null)
{
conn = DriverManager.getConnection(url, username, password);
return conn;
}
return conn;
}
public static void main(String[] args) {
try
{
Connection conn = DBHelper.getConnection();
if(conn != null)
{
System.out.println("数据库连接正常！");
}
else
{
System.out.println("数据库连接异常！");
}
}
catch(Exception ex)
{
ex.getStackTrace();
}
}
}
这个是报的异常：java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/shopping?useUnicode=true&characterEncoding=UTF-8
