import java.sql.*;
public class Test {
public static void main(String[] srg) {
String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

//加载JDBC驱动
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=master";

//连接服务器和数据库master
String userName = "sa"; //默认用户名
String userPwd = "111111"; //密码
Connection dbConn;
try { Class.forName(driverName); dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
System.out.println("==========数据库连接成功========!");

//如果连接成功 控制台输出==========数据库连接成功========!

}catch (Exception e) {

e.printStackTrace();

}
}
}