简单的问题，清高手们帮忙，多谢了。

Question

请问exception 在哪里定义？谢谢

Answer 1

请问哪部分代码？是JSP还是BEANS？

Answer 2

<%
ColNewsListUQ.DatabaseQuery("rd1","works","sa","sa");
Vector vt = new Vector();
String sqlString = "select * from js ";
String fieldName[] ={"id","biaoti","zuozhe","shijian"};
int countOfResult = ColNewsListUQ.getCountQuery("select count(*) from js ");
            if(countOfResult<=0){
            String vs=exception.getMessage();
            }
else{
int maxOfPage = countOfResult/5;
int pageNumber = ColNewsListUQ.getPageNumber(request,"pageNumber",maxOfPage);
vt = ColNewsListUQ.getGeneralTable(sqlString,fieldName,pageNumber,5);
int sizeOfVector = vt.size();
%>
            <table width="95%" valign="top" border="0" cellpadding="0" cellspacing="0" bgcolor="#eff3de" align="center">
          <tr align="center" bgcolor="#C6CF8c"> 
            <td width="55%"  align="left" >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;产品名称</td>
            <td width="20%" align="left">产地</td>
<td width="25%" align="center">提交时间</td>
            </tr>
          <tr> 
   <%
GeneralTable gt = new GeneralTable();
for (int i=0; i<sizeOfVector; i++){
gt = (GeneralTable)vt.elementAt(i);
  %>
            <td height="24"  style="line-height:24px">&nbsp;&nbsp;&nbsp;<img src="image/tb.gif">&nbsp;&nbsp;
              <a href="detail.jsp?id=<%=gt.getId()%>" target="new"><%=gt.getTitle()%></a><br> </td>
  <td><%=gt.getDetail()%></td>
<% String temp=gt.getAddDate();
       String upd=temp.substring(0,5);
   %>
            <td align="center" style="line-height:24px"><%=upd%></td>
           </tr>
   <%
}
  %>

Answer 3

try....?
我帮你up吧，我也不太清楚 接分

Answer 4

int countOfResult = ColNewsListUQ.getCountQuery("select count(*) from js ");
            if(countOfResult<=0){
            String vs=exception.getMessage();
            }
上面代码什么意思?
应该如下写啊!
int countOfResult = 0;
try
{
  countOfResult = ColNewsListUQ.getCountQuery("select count(*) from js ");
}
catch(Exception exception)
{
   String vs=exception.getMessage();
}

Answer 5

我的意思是想如果 if(countOfResult<=0)，那么显示出抱错的原因

Answer 6

我改过来了，写成
int countOfResult = 0;
try
{
  countOfResult = ColNewsListUQ.getCountQuery("select count(*) from js ");
}
catch(Exception exception)
{
   String vs=exception.getMessage();
}
可是刷新快了就会抱错
Error 500--Internal Server Error 
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:
10.5.1 500 Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.
 
这是WEBLOGIC报的错
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Software cause
d connection abort: recv failed
java.lang.NullPointerException
<2003-6-30 下午06时05分49秒> <Error> <HTTP> <101017> <[ServletContext(id=1502691
4,name=DefaultWebApp,context-path=)] Root cause of ServletException
java.lang.NullPointerException
        at jsp_servlet._test1.__cpzs._jspService(__cpzs.java:141)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
        at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:945)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:332)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:242)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:5363)
        at weblogic.security.service.SecurityServiceManager.runAs(SecurityServic
eManager.java:721)
        at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3043)
        at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2466)
        at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:152)
        at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:133)
>