有哪位能告诉我怎么用SQL server进行连接吗？我一直在连接不上，驱动链接了
package jdbcTest;
import java.sql.Connection;
import java.sql.DriverManager;
public class JdbcTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
String driverName="com.microsoft.sqlserver.jdbc.SQLServerDriver";
String dbURL="jdbc:sqlserver://localhost:1433;DatabaseName=.";
String userName="***";
String userPwd="";
try
{
Class.forName(driverName);
System.out.println("加载驱动成功！");
}catch(Exception e){
e.printStackTrace();
System.out.println("加载驱动失败！");
}
try{
Connection dbConn=DriverManager.getConnection(dbURL,userName,userPwd);
System.out.println("连接数据库成功！");
}catch(Exception e)
{
e.printStackTrace();
System.out.print("SQL Server连接失败！");
}
}
}
/*加载驱动成功！
com.microsoft.sqlserver.jdbc.SQLServerException: 通过端口 1433 连接到主机 localhost 的 TCP/IP 连接失败。错误:“Connection refused: connect。请验证连接属性。确保 SQL Server 的实例正在主机上运行，且在此端口接受 TCP/IP 连接，还要确保防火墙没有阻止到此端口的 TCP 连接。”。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:241)
at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2243)
at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:491)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1309)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at jdbcTest.JdbcTest.main(JdbcTest.java:24)
SQL Server连接失败！*/
