import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class TestOne {  private static Connection connection;  private static Statement statement;  private static ResultSet result;  public static void main(String[] args) {    try {      //加載jdbc驅動程序      Class.forName("com.mysql.jdbc.Driver");      //指明主機名（默認為：127.0.0.1）和端口號（默認為：3306）以及數據庫名（必須指定）      String url = "jdbc:mysql://localhost:3306/test1";      //與數據庫建立連接      connection =  DriverManager.getConnection(url, "root", "123456");      //創建一個Statement對象將SQL語句發送到數據庫      statement = connection.createStatement();      //將查詢結果返回給result      result = statement.executeQuery("select *from user");      while(result.next()){        System.out.println("name:" + result.getString(1) + "      password:" + result.getString(2));      }      connection.close();      result.close();      statement.close();    } catch (ClassNotFoundException e) {      // TODO Auto-generated catch block      e.printStackTrace();    } catch (SQLException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }finally{      try {        if(connection != null)          connection.close();        if(result != null)          result.close();        if(statement != null)          statement.close();      } catch (SQLException e) {        // TODO Auto-generated catch block        e.printStackTrace();      }    }  }}/** * mysql> select *from user; *+----------+----------+ *| name   | password | *+----------+----------+ *| lisi   | 123456  | *| wangwu  | 123456  | *| zhangsan | 123456  | *+----------+----------+ *3 rows in set (0.54 sec) * *在java中的輸出結果 *name:lisi    password:123456 *name:wangwu    password:123456 *name:zhangsan    password:123456 */

import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class TestDemo {  public static void main(String[] args) {    String url="jdbc:sqlserver://localhost:1433;DatabaseName=Contellation";    Connection conn = null;    try {      Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");      conn = DriverManager.getConnection(url, "sa", "");      Statement statement=conn.createStatement();      ResultSet rs = statement.executeQuery("select * from dbo.登陸表 ");      while(rs.next()){        System.out.println("用戶名：" + rs.getString(1) + "  密碼：" + rs.getString(2));      }      conn.close();    } catch (ClassNotFoundException e) {      // TODO Auto-generated catch block      e.printStackTrace();    } catch (SQLException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }   }}/** * java中的輸出結果 * 用戶名：張三  密碼：123456 *用戶名：李四  密碼：111111 *用戶名：王五  密碼：123654 *用戶名：王延暾  密碼：0123456789 *用戶名：曾安新 密碼：123456 */