JDBC连接数据库演示案例
1 import java.sql.Connection; 2 import java.sql.DriverManager; 3 import java.sql.ResultSet; 4 import java.sql.SQLException; 5 import java.sql.Statement; 6 7 public class DBUtil { 8 9 private static final String URL="jdbc:mysql://127.0.0.1:3306/student"; 10 private static final String USER="root"; 11 private static final String PASSWORD="root"; 12 13 public static void main(String[] args) throws ClassNotFoundException, SQLException { 14 15 //1、加载驱动程序 16 Class.forName("com.mysql.jdbc.Driver"); 17 //2、获得数据库的连接 18 Connection conn = DriverManager.getConnection(URL, USER, PASSWORD); 19 //3、通过数据的连接来操作数据库,实现增删改查 20 Statement stmt = conn.createStatement(); 21 ResultSet rst = stmt.executeQuery("select name,age from stu"); 22 while(rst.next()){ 23 System.out.println(rst.getString("name")+","+rst.getInt("age")); 24 } 25 26 } 27 28 }