救命啊！

我的jsp   怎么连接不上sql   server数据库啊，我都急死了，谁救救我啊，错误报告如下：  
  http   status   500   -    
   
  --------------------------------------------------------------------------------  
   
  type   exception   report  
   
  message    
   
  description   the   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.  
   
  exception    
   
  org.apache.jasper.jasperexception:   [microsoft][sqlserver   2000   driver   for   jdbc]error   establishing   socket.  
  at   org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:254)  
  at   org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:295)  
  at   org.apache.jasper.servlet.jspservlet.service(jspservlet.java:241)  
  at   javax.servlet.http.httpservlet.service(httpservlet.java:853)  
  at   org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:247)  
  at   org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:193)  
  at   org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:256)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:191)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardcontext.invoke(standardcontext.java:2416)  
  at   org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:180)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.valves.errordispatchervalve.invoke(errordispatchervalve.java:171)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:641)  
  at   org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:172)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:641)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:174)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.coyote.tomcat4.coyoteadapter.service(coyoteadapter.java:223)  
  at   org.apache.coyote.http11.http11processor.process(http11processor.java:601)  
  at   org.apache.coyote.http11.http11protocol$http11connectionhandler.processconnection(http11protocol.java:392)  
  at   org.apache.tomcat.util.net.tcpworkerthread.runit(pooltcpendpoint.java:565)  
  at   org.apache.tomcat.util.threads.threadpool$controlrunnable.run(threadpool.java:619)  
  at   java.lang.thread.run(thread.java:534)  
   
   
  root   cause    
   
  javax.servlet.servletexception:   [microsoft][sqlserver   2000   driver   for   jdbc]error   establishing   socket.  
  at   org.apache.jasper.runtime.pagecontextimpl.handlepageexception(pagecontextimpl.java:536)  
  at   org.apache.jsp.testsql_jsp._jspservice(testsql_jsp.java:88)  
  at   org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:137)  
  at   javax.servlet.http.httpservlet.service(httpservlet.java:853)  
  at   org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:210)  
  at   org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:295)  
  at   org.apache.jasper.servlet.jspservlet.service(jspservlet.java:241)  
  at   javax.servlet.http.httpservlet.service(httpservlet.java:853)  
  at   org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:247)  
  at   org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:193)  
  at   org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:256)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:191)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardcontext.invoke(standardcontext.java:2416)  
  at   org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:180)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.valves.errordispatchervalve.invoke(errordispatchervalve.java:171)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:641)  
  at   org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:172)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:641)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:174)  
  at   org.apache.catalina.core.standardpipeline$standardpipelinevalvecontext.invokenext(standardpipeline.java:643)  
  at   org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:480)  
  at   org.apache.catalina.core.containerbase.invoke(containerbase.java:995)  
  at   org.apache.coyote.tomcat4.coyoteadapter.service(coyoteadapter.java:223)  
  at   org.apache.coyote.http11.http11processor.process(http11processor.java:601)  
  at   org.apache.coyote.http11.http11protocol$http11connectionhandler.processconnection(http11protocol.java:392)  
  at   org.apache.tomcat.util.net.tcpworkerthread.runit(pooltcpendpoint.java:565)  
  at   org.apache.tomcat.util.threads.threadpool$controlrunnable.run(threadpool.java:619)  
  at   java.lang.thread.run(thread.java:534)  
   
 

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