Java实现JDBC连接数据库实例
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 JDBCTest { 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 18 //2.获得数据连接 19 Connection conn = DriverManager.getConnection(URL, USER, PASSWORD); 20 21 //3.使用数据库的连接创建声明 22 Statement stmt = conn.createStatement(); 23 24 //4.使用声明执行SQL语句 25 ResultSet rs = stmt.executeQuery("select * from stu"); 26 27 //5.读取数据库的信息 28 while(rs.next()){ 29 String id = rs.getString("id"); 30 String name = rs.getString("name"); 31 String sex = rs.getString("sex"); 32 String score = rs.getString("score"); 33 System.out.println(id+"姓名:"+name+",性别:"+sex+",成绩:"+score); 34 } 35 36 } 37 38 }