大侠门帮帮忙看看这几行日志
<2012-2-16 ????07ê±10·?48?? GMT+08:00> <Error> <HTTP> <BEA-101017> <[ServletContext@1444697628[app:ifmis module:ifmis path: spec-version:null]] Root cause of ServletException.
java.net.UnknownHostException: www.sian.com.cn
  at java.net.InetAddress.getAllByName0(InetAddress.java:1274)
  at java.net.InetAddress.getAllByName(InetAddress.java:1196)
  at java.net.InetAddress.getAllByName(InetAddress.java:1118)
  at weblogic.net.http.HttpClient.openServer(HttpClient.java:309)
  at weblogic.net.http.HttpClient.openServer(HttpClient.java:425)
  Truncated. see log file for complete stacktrace

------解决方案--------------------
java.net.UnknownHostException: www.sian.com.cn
应该是socket不认识这个链接，新浪的是www.sina.com.cn吧