java连接mysql数据库

package day_09; import java.sql.*; public class Test { public static void main(String[] args) { String url="jdbc:mysql://localhost:3306/mydb"; String user="root"; String password="281889"; Connection conn=null; Statement stmt=null; ResultSet rs=null; try { Class.forName("com.mysql.jdbc.Driver"); conn=DriverManager.getConnection(url,user,password); stmt=conn.createStatement(); String sql; sql="insert into student values(2014218,'李月','女')"; stmt.execute(sql); sql="select * from student"; rs = stmt.executeQuery(sql); System.out.println("学号" + " " + " 姓名"+" "+"性别"); String name = null; while(rs.next()) { name = rs.getString("sname"); System.out.println(rs.getString("sno") + " " + name+" "+rs.getString("sex")); } } catch(ClassNotFoundException e1) { System.out.println("数据库驱动不存在！"+e1.toString()); } catch(SQLException e2) { System.out.println("数据库存在异常"+e2.toString()); } finally { try { if(rs!=null) rs.close(); if(stmt!=null) stmt.close(); if(conn!=null) conn.close(); } catch(SQLException e) { System.out.println(e.toString()); } } } }