package util; import java.sql.Connection; import java.sql.DriverManager; public class DBHelper { private static final String driver="com.mysql.jdbc.Driver"; private static final String url="jdbc:mysql://localhost:3006/imooc"; private static final String username="root"; private static final String password="123456"; 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.printStackTrace(); } } //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; } //判断连接是否成功 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 e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
代码如上?请问要怎么处理?
梦影剑魂