The response is being comitted before the erro is being thrown. You need to
set the buffer size to be larger. Its a page directive.
-Tim
Adile Abbadi wrote:
Hi Tim,
Thank you very much - that has helped - however I discovered that the
problem still exists if I have an include within an include - ie.
I have an include called this
<jsp:include page="navmenu.jsp" flush="false">
Inside that include I have another include also with flush set to false -
and I still get a blank page - however if I remove the includes within the
include then the exception is visible. Any ideas on this?
Cheers
Adile
-----Original Message-----
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: July 22, 2005 12:42 PM
To: Tomcat Users List
Subject: Re: Error 500 messages
flush="false"
-Tim
Adile Abbadi wrote:
Hi Tim,
Thanx for the information - I forgot about that. I guess the question is
why
did it work in Tomcat 3 and not Tomcat 4 and second is there a workaround
to
get it to work?
Adile
-----Original Message-----
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: July 22, 2005 12:20 PM
To: Tomcat Users List
Subject: Re: Error 500 messages
This line <jsp:include page="top.html" flush="true"> will commit the
response
and send html back to the client. Once that is done - no error messages
will
be sent back to the client and you will end up with a blank screen.
-Tim
Adile Abbadi wrote:
Hi Rob,
Thanx for this - this is great - I may have to use this because I think I
have truly found a bug in Tomcat as this issue is not happening on my
Tomcat
3 server. I did a bit more investigation and I found some interesting
things. This is going to be a long email with code and stuff but whoever
wants to read it please do - because the results are weird.
I created the following simple JSP page
<%@ page language="java"
import="javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager" %>
<%^M
String query = "select * from patient_info where ref_client = 38
and
pat_lname like '%SM'ITH%';";
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection("podb");
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
while(rs.next()) {
col1 = rs.getString("pat_id");
col2 = rs.getString("pat_fname");
%>
<%=col1%>: <%=col2%><br>
<br>
<%
}
rs.close();
SQLS.close();
connMgr.freeConnection("podb",Conn);
%>
As you can see I did a syntax error in the query and the error comes to
the
screen as expected
javax.servlet.ServletException: ERROR: syntax error at or near "ITH" at
character 74
I said that's weird so I tried to compare my complicated JSP files to what
I
have here to see what is different (if I did something wrong) and I found
this
If I add an include at certain parts of the page - I see the result I was
talking about. For example if I do this:
<jsp:include page="top.html" flush="true">
<%@ page language="java"
import="javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager" %>
<%^M
String query = "select * from patient_info where ref_client = 38
and
pat_lname like '%SM'ITH%';";
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection("podb");
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
while(rs.next()) {
col1 = rs.getString("pat_id");
col2 = rs.getString("pat_fname");
%>
<%=col1%>: <%=col2%><br>
<br>
<%
}
rs.close();
SQLS.close();
connMgr.freeConnection("podb",Conn);
%>
I get the error page as I should - however If I move the include to below
the <%@ page language="java".... - I get a blank page!!
Now here is where it gets weirder - if I force a java syntax error like as
follows (I corrected the query):
<jsp:include page="top.html" flush="true">
<%@ page language="java"
import="javax.crypto.*,java.sql.*,java.net.*,dbc.DBConnectionManager" %>
<%^M
String query = "select * from patient_info where ref_client = 38
and
pat_lname like '%SMITH%';";
DBConnectionManager connMgr;
connMgr = DBConnectionManager.getInstance();
Connection Conn = connMgr.getConnection("podb");
Statement SQLS = Conn.createStatement();
ResultSet rs = SQLS.executeQuery(query);
String col1 = null;
String col2 = null;
if (col1.equals("yes") {
//test
}
while(rs.next()) {
col1 = rs.getString("pat_id");
col2 = rs.getString("pat_fname");
%>
<%=col1%>: <%=col2%><br>
<br>
<%
}
rs.close();
SQLS.close();
connMgr.freeConnection("podb",Conn);
%>
An error will get thrown to the screen
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 2 in the jsp file: /testdb.jsp
/var/lib/tomcat4/work/Standalone/localhost/podims/testdb_jsp.java:57: ')'
expected
if (col1.equals("yes") {
However if I try to force a null pointer error by correcting my syntax
error - I get a blank screen! If remove the include I get the null pointer
error no problem. The other behaviour I noticed as well is that as I said
before if the include is above the <%@ page language.... piece it works
fine - only if its an html - if its another jsp file - I get a blank
screen
as well.
So has anyone else seen this behaviour - is there a fix or a work around -
should I got back to Tomcat 3?? I'm going to try your suggestion Rob and
see
if that helps at all, but to me its seems like an issue with the JSP
compiler.
Cheers
Adile
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