jdbc连接sql server问题

[shenjiang0203]

当我用jdbc连接sqlserver2000时,出现如下错误:
java.sql.SQLException: [Microsoft][SQLServer JDBC Driver]Error establishing sock
et.
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSConnection.<init>(Unknown Source)

at com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Sou
rce)
at com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown S
ource)
at com.microsoft.jdbc.base.BaseConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at sqlconnect.<init>(sqlconnect.java:19)
at sqlconnect.main(sqlconnect.java:33)
我的连接语法是:
try
{

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
}
catch(java.lang.ClassNotFoundException e)
{
System.out.println(e.toString());
}
try
{
con = DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=ids","sj","");

System.out.println("连接成功!");
}
catch(SQLException se)
{
se.printStackTrace();
}

[shenjiang0203]

如果,在安装数据库时用默认的实例,不要创建实例,即可解决上述问题