高手们.看看这个异常......搞死我了。~~~

description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: 在此上下文中不允许使用名称 "sadf"。有效表达式包括常量、常量表达式和变量(在某些上下文中)。不允许使用列名。
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.process_jsp._jspService(org.apache.jsp.process_jsp:80)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause com.microsoft.sqlserver.jdbc.SQLServerException: 在此上下文中不允许使用名称 "sadf"。有效表达式包括常量、常量表达式和变量(在某些上下文中)。不允许使用列名。
com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)
com.microsoft.sqlserver.jdbc.IOBuffer.processPackets(Unknown Source)
com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(Unknown Source)
com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteStatement(Unknown Source)
com.microsoft.sqlserver.jdbc.SQLServerStatement$StatementExecutionRequest.executeStatement(Unknown Source)
com.microsoft.sqlserver.jdbc.CancelableRequest.execute(Unknown Source)
com.microsoft.sqlserver.jdbc.SQLServerConnection.executeRequest(Unknown Source)
com.microsoft.sqlserver.jdbc.SQLServerStatement.execute(Unknown Source)
org.apache.tomcat.dbcp.dbcp.DelegatingStatement.execute(DelegatingStatement.java:261)
org.apache.jsp.process_jsp._jspService(org.apache.jsp.process_jsp:67)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.9 logs.