myecilpse已经和mysql连接成功了,为什么运行java文件会报错啊
代码如下:
package com.imooc.db; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class DBUtil { private static final String URL="jdbc:mysql://127.0.0.1:3306/imooc"; private static final String USER="root"; private static final String PASSWORD="root"; public static void main(String[] args) throws Exception{ try{ //1.加载驱动程序 Class.forName("com.mysql.jdbc.Driver"); //2.获得数据库的连接 Connection conn=DriverManager.getConnection(URL, USER, PASSWORD); //3.通过数据库的连接操作数据库,实现增删改查 Statement stmt=conn.createStatement(); ResultSet rs=stmt.executeQuery("select user_name,age from imooc_goddness"); while(rs.next()){ System.out.println(rs.getString("user_name")+","+rs.getInt("age")); } } catch(ClassNotFoundException e){ e.printStackTrace(); }catch(SQLException e){ e.printStackTrace(); } } }