在borland的网站上查到了解决方法

borland网站原文地址http://qc.borland.com/wc/qcmain.aspx?d=2614

解决的过程是:

1.Add the following to the library path: $(DELPHI)/Source/Soap 

2.Open /Source/Soap/SoapHTTPTrans.pas, and make a backup of it!
3.Line 13 should currently read:
//{$DEFINE USE_INDY}
4.Remove the comment symbols to make it read
{$DEFINE USE_INDY}
5 - Rebuild your client side project (clicking run won't work)

我的delphi7没有使用自带的indy,经过测试不行!!!