sqlserver数据如下；

TestSQL.java；

import java.sql.*;public class TestSQL {public static void main(String[] args) throws ClassNotFoundException, SQLException {String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //加载JDBC驱动
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=test1"; //连接服务器和数据库
String user = "rabbit";
String pwd = "rabbit";
Connection dbConn;Class.forName(driverName);
System.out.println("数据库驱动程序注册成功");
dbConn = DriverManager.getConnection(dbURL,user, pwd);Statement stmt = dbConn.createStatement();
ResultSet rs = stmt.executeQuery("select id,name,salary from salary1");while(rs.next()){//如果对象中有数据，就会循环打印出来System.out.println(rs.getInt("id")+","+rs.getString("name")+","+rs.getInt("salary"));}rs.close();
dbConn.close();
}
}

编译；jar包和源代码在同一目录；java执行的时候指定classpath；

出现下图错误； 

 

看一下目录下有2个sqljdbc的jar包；

 

删掉一个，保留带4的这个；然后执行，输出数据如下；