我用jdbc连接SQL2005，出现了这样的问题，请位高手指点一下

Question

import java.sql.Connection;
import java.sql.DriverManager;下面是代码：
import java.sql.Connection;
import java.sql.DriverManager;import javax.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=sample";  //连接服务器和sample 
  //String userName = "";  //默认用户名 
  //String userPwd = "";  //密码 
  Connection dbConn;    try { 
   Class.forName(driverName); 
   dbConn = DriverManager.getConnection(dbURL,"",""); 
   System.out.println("Connection Successful!");  //如果连接成功 控制台输出Connection Successful! 
  } catch (Exception e) { 
   e.printStackTrace(); 
  } 
} 
} 
出现的错误是：
com.microsoft.sqlserver.jdbc.SQLServerException: 用户 '' 登录失败。该用户与可信 SQL Server 连接无关联。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:197)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:246)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:83)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:2529)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:1905)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:1893)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:4575)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1400)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1045)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:817)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:700)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at Test.main(Test.java:16)

Answer 1

dbConn = DriverManager.getConnection(dbURL,"xxxxxx","xxxxxx");那你就把密码和用户名写上  

Answer 2

控制台出现这样的错误信息：
com.microsoft.sqlserver.jdbc.SQLServerException: 用户 'sa' 登录失败。该用户与可信 SQL Server 连接无关联。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:197)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:246)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:83)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:2529)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:1905)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:1893)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:4575)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1400)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1045)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:817)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:700)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at Test.main(Test.java:16)

Answer 3

数据库安全选项中，登录模式，要设置为：MSSQL和windows混合登录模式！

Answer 4

还要启用sqlserver和windos验证和启用sa用户

Answer 5

String dbURL = "jdbc:sqlserver://localhost:1433;DatabaseName=sample"; //连接服务器和sample 1433;后面空格了？

Answer 6

先把服务打开  在dos命令中输入services.msc 
把驱动加到程序中  注意你写的driver 、url 和 驱动要对应  
把数据库的用户名和密码给改了