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Question

用的数据库是SQLServer2005，这是什么错误？？？？ 
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket. 
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source) 
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 Source) 
at com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source) 
at com.microsoft.jdbc.base.BaseConnection.open(Unknown Source) 
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source) 
at java.sql.DriverManager.getConnection(DriverManager.java:582) 
at java.sql.DriverManager.getConnection(DriverManager.java:185) 
at com.yourcompany.struts.action.LoginAction.execute(LoginAction.java:53) 
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) 
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) 
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) 
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) 
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) 
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) 
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) 
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) 
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) 
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) 
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) 
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) 
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) 
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) 
at java.lang.Thread.run(Thread.java:619)