package JDBC.WildCat.com; import java.sql.*; public class TestJdbc1 { /**标准版 * MySql数据库小程序 实现wild_java数据库里student表的查询 * * @param args * @throws SQLException * @throws ClassNotFoundException */ public static void main(String[] args) { Connection conn=null; Statement stmt=null; ResultSet rs=null; try{ // step1. new一个Driver Class.forName("com.mysql.jdbc.Driver"); //step2. 拿到一个连接 String url = "jdbc:mysql://localhost/wild_java?user=root&password=family"; conn = DriverManager.getConnection(url); //step3.创建一个Statement stmt=conn.createStatement(); //step4. 获得一个结果集 rs=stmt.executeQuery("select * from student"); //step5.遍历结果集 while (rs.next()) { System.out.println(rs.getString("NAME")); } }catch(ClassNotFoundException e){ e.printStackTrace(); }catch (SQLException e){ e.printStackTrace(); } finally{ //step6. 关闭对象 try{ if (rs!=null){ rs.close(); rs=null;//放入垃圾回收站 } if (stmt!=null){ stmt.close(); stmt=null; } if (conn!=null){ conn.close(); conn=null; } }catch (SQLException e){ e.printStackTrace(); } } } }