java连接sql2005问题

用jsp连接sql2005总是不成功！所以写了个java代码测试一下，也不成功！


 import java.sql.*;
import javax.sql.*;
import com.microsoft.sqlserver.jdbc.*;
public class Test{
	public static void main(String args[]){
		String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
	 	String URL1="jdbc:sqlserver://localhost:1433;DatabaseName=db_shopping";
	 	String USER="sa";
	 	String PASSWORD="";
	 	try{
	 		
	 	Class.forName(DRIVER).newInstance();
	 	 	
	 	Connection conn=DriverManager.getConnection(URL1,USER,PASSWORD);
	 	
	 	Statement stmt=conn.createStatement();
	 	
	 	ResultSet rs=stmt.executeQuery("select * from dbo.tab_sex");
	 	
	 	while(rs.next()){
	 		System.out.println(rs.getString("sex"));
	 		}}catch(Exception e){e.printStackTrace();}
	 }
 
 
	}

2005的驱动已经搞定！这个代码总是出错说：com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'sa'. The
user is not associated with a trusted SQL Server connection.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError
(Unknown Source)
at com.microsoft.sqlserver.jdbc.IOBuffer.processPackets(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(Unknown Source
)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Sour
ce)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Test.main(Test.java:14)
高手帮帮忙啊！为什么会Login failed for user 'sa'. ？谢谢！