jdbc連接mysql入門程序

1假設你已在MySQL數據庫服務器中創建了jdbc數據庫和users表，並且表中有記錄

  select id,name,sal from users;

    2創建一個javase或javaweb應用

3創建com.aaa.jdbc包名

4將mysql-connector-java-5.1.7-bin.jar(版本無所謂)導入工程的classpath中去

5創建Demo01程序，查詢所有用戶

public class Demo01 {

public static void main(String[] args) throws Exception{

DriverManager.registerDriver(new Driver());

         //URL,數據庫用戶名,密碼

Connection conn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/jdbc","root","root");

Statement stmt = conn.createStatement();

ResultSet rs = stmt.executeQuery("select * from users");

while(rs.next()){

Object id = rs.getObject("id");

Object name = rs.getObject("name");

Object sal = rs.getObject("sal");

System.out.println(id);

System.out.println(name);

System.out.println(sal);

System.out.println("------------------------");

}

rs.close();

stmt.close();

conn.close();

}

}