import java.sql.*;

public class Dome {
    public static void main(String[] args) {
        //定義加載驅(qū)動(dòng)
        String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
        //定義數(shù)據(jù)庫(kù)用戶(hù)
        String userName = "sa";
        //定義數(shù)據(jù)庫(kù)密碼
        String userPwd = "sasa";
        //定義數(shù)據(jù)庫(kù)連接對(duì)象
        Connection dbConn = null;
        //定義命令對(duì)象
        Statement stmt=null;
        try {
            //1.加載及注冊(cè)驅(qū)動(dòng)
            Class.forName(driverName);
            //2.定義數(shù)據(jù)庫(kù)連接字符串
            String dbURL = "jdbc:sqlserver://localhost:1433;DatabaseName=LOLDB";
            //3.數(shù)據(jù)庫(kù)連接
            dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
            System.out.println("連接數(shù)據(jù)庫(kù)成功");
            //4.定義SQL語(yǔ)句
            String sql="select * from LolNameTab";
            //5.創(chuàng)建一個(gè)執(zhí)行sql對(duì)象
            stmt=dbConn.createStatement();
            //6.執(zhí)行SQL語(yǔ)句命令
            ResultSet resultSet = stmt.executeQuery(sql);
            //7.處理結(jié)果，并獲取數(shù)據(jù)
            while (resultSet.next()){
                String userID=resultSet.getString("userID");
                String password=resultSet.getString("password");
                String name=resultSet.getString("userName");
                System.out.println(userID+"\t"+password+"\t"+name);
            }
            //8.關(guān)閉連接
            resultSet.close();
            dbConn.close();
            stmt.close();
        } catch (SQLException e) {      //數(shù)據(jù)庫(kù)的處理異常的方法
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }finally {
            if (dbConn!=null){
                try {
                    dbConn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if(stmt!=null){
                try {
                    stmt.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}