java连接mysql数据库实例_MySQL

2、代码

package mysqltest;import java.io.*;import java.sql.*;public class test { public static void main(String[] args) {  String JDriver= "com.mysql.jdbc.Driver";  String connectdb="jdbc:mysql://127.0.0.1:3306/abc";//abc是database name  try{   Class.forName(JDriver);  }catch(ClassNotFoundException ex){   ex.printStackTrace();   System.out.println("加载数据库引擎失败！");   System.exit(0);  }   System.out.println("数据库引擎加载成功！");   try{   String user="root";   String password="123456";   Connection con=DriverManager.getConnection(connectdb, user, password);   System.out.println("连接数据库成功！");   Statement stmt=con.createStatement();   System.out.println("查询/n开始读取数据");   ResultSet rs=stmt.executeQuery("SELECT * FROM users where id=1");   while(rs.next())   {    System.out.println(rs.getString("id")+"/t"+rs.getString("name"));      }      stmt.close();   con.close();  }catch(SQLException e){   e.printStackTrace();   System.exit(0);  } }}