Filtering of JSP request
hi all,
I want to filter my every jsp request. for that i have change my web.xml by adding the following entry
<filter>
<filter-name>FilterAllRequests </filter-name>
<filter-class>com.cdb.common.R equestFilterServlet</filter-class>
</filter>
<filter-mapping>
<filter-name>FilterAllRequests </filter-name>
<url-pattern>/*</url-patter n>
</filter-mapping>
Reques tFilterServlet filter class is in web-inf/classes/com/cdb/common
but when i restart the server... it gives following error
<Aug 10, 2004 4:10:26 PM IST> <Error> <HTTP> <101165> <Could not load user defined filter: com.cdb.common.RequestFilterServlet
jav a.lang.ClassCastException: com.cdb.common.RequestFilterServlet
at weblogic.servlet.internal.WebAppServletCon text.registerFilter(WebAppServletContext.j ava:2447)
at weblogic.servlet.internal.WebAppServletCon text.initFilters(WebAppServletContext.java :2433)
at weblogic.servlet.internal.WebAppServletCon text.preloadResources(WebAppServletContext .java:2703)
at weblogic.servlet.internal.HttpServer.prelo adResources(HttpServer.java:563)
at weblogic.servlet.internal.WebService.prelo adResources(WebService.java:476)
at weblogic.t3.srvr.ServletInitRunner$1.run(S ervletInitRunner.java:50)
at weblogic.security.service.SecurityServiceM anager.runAs(SecurityServiceManager.java:7 80)
at weblogic.t3.srvr.ServletInitRunner.run(Ser vletInitRunner.java:46)
at java.lang.Thread.run(Thread.java:479)
& gt;
<Aug 10, 2004 4:10:27 PM IST> <Notice> <WebLogicServer> <000354> <Thread "ListenThread.Default" listening on port 7001>
<Aug 10, 2004 4:10:27 PM IST> <Notice> <Management> <141030> <Starting discovery of Managed Server... This feature is on by default, you
may turn this off by passing -Dweblogic.management.discover=false><Aug 10, 2004 4:10:27 PM IST> <Notice> <WebLogicServer> <000331> <Started WebLogic Admin Server "myserver" for domain "mydomain" running
in Development Mode>
<Aug 10, 2004 4:10:27 PM IST> <Notice> <WebLogicServer> <000365> <Server state changed to RUNNING>
<Aug 10, 2004 4:10:27 PM IST> <Notice> <WebLogicServer> <000360> <Server started in RUNNING mode>
*************************< BR>what will be the problem?
Thanx in advance
Deepali
HI DIPALI >>>>>>>>>>>>>>>>>>>>>>>>>>
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<P>
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</form>
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String un = request.getParameter("un").toString();
String pw = request.getParameter("pw").toString();
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I have run into a problem where WebLogic seems to be duplicating
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===============================================================
Debug Trace during correct processing after waiting at least one minute from the
prior request
================================================================
<--- Begin Item Master JSP --->
ItemMasterBean.checkCommand: 0
Tab: Item Master Cycle Steps Tab
<--- Adding New Task... --->
MIProfileTask.add 24_1143578264_1148909342
MIProfileTaskId 1143578264_1148909342
ItemMasterBean.checkCommand: 5
SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM
tblItemMaster WHERE
fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc FROM
tblItemSupplier, tblSupplier WHERE tblItemSupplier.fdSupplierCode =
tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
BUCode: GAS
ItemCode: 0111B829
PROFILE: 24
Calling Item Master Cycle Steps JSP
ItemMasterCycleSteps.jsp
Parent Key 24_1143578049_1145772805
Item Profile 24 ItemMasterBean profile 24
After 1
<---- ItemMasterCycleSteps.jsp END ---->
Finished calling Item Master Cycle Steps JSP
<--- End Item Master JSP --->
Here is what happens when I tried to add another tasks after
updating the last task. The browser had completely stopped processing.
Debug trace during failure:
===========================================================
<--- Begin Item Master JSP --->
ItemMasterBean.checkCommand: 0
Tab: Item Master Cycle Steps Tab
<--- Adding New Task... --->
MIProfileTask.add 24_1143578276_1149056729
MIProfileTaskId 1143578276_1149056729
ItemMasterBean.checkCommand: 5
SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM
tblItemMaster WHERE
fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc FROM
tblItemSupplier, tblSupplier WHERE
tblItemSupplier.fdSupplierCode =
tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
BUCode: GAS
ItemCode: 0111B829
PROFILE: 24
Calling Item Master Cycle Steps JSP
ItemMasterCycleSteps.jsp
Parent Key 24_1143578049_1145772805
Item Profile 24 ItemMasterBean profile 24
After 1
<---- ItemMasterCycleSteps.jsp END ---->
Finished calling Item Master Cycle Steps JSP
<--- End Item Master JSP --->
<--- Begin Item Master JSP --->
ItemMasterBean.checkCommand: 0
Tab: Item Master Cycle Steps Tab
<--- Adding New Task... --->
MIProfileTask.add 24_1143578277_1149059577
MIProfileTaskId 1143578277_1149059577
ItemMasterBean.checkCommand: 5
SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM tblItemMaster WHERE
fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc FROM
tblItemSupplier, tblSupplier WHERE
tblItemSupplier.fdSupplierCode =
tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
BUCode: GAS
ItemCode: 0111B829
PROFILE: 24
Calling Item Master Cycle Steps JSP
ItemMasterCycleSteps.jsp
Parent Key 24_1143578049_1145772805
Item Profile 24 ItemMasterBean profile 24
After 1
<---- ItemMasterCycleSteps.jsp END ---->
Finished calling Item Master Cycle Steps JSP
<--- End Item Master JSP --->
This happens in WebLogic 6.1 SP2 as well when using IE5.5 + and Netscape
6.0. It also seems to slow things down since the response waits for this
second request. I'm curious if anyone can expand on why this is happening
and what is meant by "add logic that prevents multiple updates in your
page". If you try out the BEA demo apps, you might notice that this happens
with their pages as well. At least it does with Stockportal...
"Matt Parker" <[email protected]> wrote in message
news:[email protected]...
>
> Bob,
>
> Thanks for the insight. I've been racking my brain for the last couple of
days.
> I was using IE 5.5, and found IE 6.0 to have the same problem. I'm getting
Netscape
> to test this as well.
>
> Thanks,
>
> M.
>
>
>
> "Bob Lee" <[email protected]> wrote:
> >I'v run into this, too. The issue ended up being with Internet Explorer
> >5.5.
> >You can either add logic that prevents multiple updates in your page,
> >or you
> >can play around and try a different method for redirecting to that page.
> >
> >If the data is mission critical, go with the first because this could
> >be a
> >potential security hole (i.e. users could corrupt data).
> >
> >If it's logging or something like that (it was in my case), use the
latter
> >solution.
> >
> >Bob
> >
> >
> >"Matt Parker" <[email protected]> wrote in message
> >news:[email protected]...
> >>
> >> I have run into a problem where WebLogic seems to be duplicating
> >> page requests, which causes my web application to enter duplicate data
> >items.
> >> Essentially I have one JSP page,
> >> ItemMaster.jsp, that includes a couple of pages that do
> >> supplemental processing depending on which tab is chosen by the user.
> >The
> >error
> >> only seems to occur when adding records, as processing the other
requests
> >twice
> >> in succession doesn't duplicate database data. I have placed debug
> >statements
> >> at the
> >> beginning and ending of the main page, ItemMaster.jsp. Once the
> >> app server hits "End Item Master JSP", there should be no processing
> >left,
> >as
> >> it is the last line in the JSP. The first set of trace statements
executes
> >correctly
> >> if I wait at least one minute from the end of processing the last
request.
> >Otherwise
> >> at the bottom set of trace statements, you see that it
> >> processes the same page twice, duplicating data.
> >>
> >> One other note, the browser window the JSP is processing in is
> >> another spawned window to create a dialog like look-and-feel. So there
> >are
> >two
> >> physical browser windows open at the same time. Coincidence? I don't
> >know.
> >>
> >> I'm using WebLogic 6.0 SP1.
> >>
> >> Any help you can provide would be greatly appreciated.
> >>
> >> Regards,
> >>
> >> Matt Parker
> >>
> >> ===============================================================
> >>
> >>
> >> Debug Trace during correct processing after waiting at least one minute
> >from the
> >> prior request
> >>
> >> ================================================================
> >>
> >>
> >> <--- Begin Item Master JSP --->
> >> ItemMasterBean.checkCommand: 0
> >> Tab: Item Master Cycle Steps Tab
> >> <--- Adding New Task... --->
> >> MIProfileTask.add 24_1143578264_1148909342
> >> MIProfileTaskId 1143578264_1148909342
> >> ItemMasterBean.checkCommand: 5
> >> SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM
> >> tblItemMaster WHERE
> >> fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc
> >FROM
> >> tblItemSupplier, tblSupplier WHERE tblItemSupplier.fdSupplierCode =
> >> tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
> >> tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
> >> BUCode: GAS
> >> ItemCode: 0111B829
> >> PROFILE: 24
> >> Calling Item Master Cycle Steps JSP
> >>
> >> ItemMasterCycleSteps.jsp
> >> Parent Key 24_1143578049_1145772805
> >> Item Profile 24 ItemMasterBean profile 24
> >> After 1
> >> <---- ItemMasterCycleSteps.jsp END ---->
> >> Finished calling Item Master Cycle Steps JSP
> >> <--- End Item Master JSP --->
> >>
> >>
> >>
> >>
> >> Here is what happens when I tried to add another tasks after
> >> updating the last task. The browser had completely stopped processing.
> >>
> >> Debug trace during failure:
> >> ===========================================================
> >>
> >> <--- Begin Item Master JSP --->
> >> ItemMasterBean.checkCommand: 0
> >> Tab: Item Master Cycle Steps Tab
> >> <--- Adding New Task... --->
> >> MIProfileTask.add 24_1143578276_1149056729
> >> MIProfileTaskId 1143578276_1149056729
> >> ItemMasterBean.checkCommand: 5
> >> SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM
> >> tblItemMaster WHERE
> >> fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc
> >FROM
> >> tblItemSupplier, tblSupplier WHERE
> >> tblItemSupplier.fdSupplierCode =
> >> tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
> >> tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
> >> BUCode: GAS
> >> ItemCode: 0111B829
> >> PROFILE: 24
> >> Calling Item Master Cycle Steps JSP
> >> ItemMasterCycleSteps.jsp
> >> Parent Key 24_1143578049_1145772805
> >> Item Profile 24 ItemMasterBean profile 24
> >> After 1
> >> <---- ItemMasterCycleSteps.jsp END ---->
> >> Finished calling Item Master Cycle Steps JSP
> >> <--- End Item Master JSP --->
> >> <--- Begin Item Master JSP --->
> >> ItemMasterBean.checkCommand: 0
> >> Tab: Item Master Cycle Steps Tab
> >> <--- Adding New Task... --->
> >> MIProfileTask.add 24_1143578277_1149059577
> >> MIProfileTaskId 1143578277_1149059577
> >> ItemMasterBean.checkCommand: 5
> >> SQL: SELECT fdMIProfileId, 'Default' AS fdSupplierDesc FROM
tblItemMaster
> >WHERE
> >>
> >> fdBUCode=? AND fdItemCode=? UNION SELECT fdMIProfileId, fdSupplierDesc
> >FROM
> >> tblItemSupplier, tblSupplier WHERE
> >> tblItemSupplier.fdSupplierCode =
> >> tblSupplier.fdSupplierCode AND tblItemSupplier.fdItemCode=? AND
> >> tblItemSupplier.fdBUCode=? ORDER BY fdSupplierDesc
> >> BUCode: GAS
> >> ItemCode: 0111B829
> >> PROFILE: 24
> >> Calling Item Master Cycle Steps JSP
> >> ItemMasterCycleSteps.jsp
> >> Parent Key 24_1143578049_1145772805
> >> Item Profile 24 ItemMasterBean profile 24
> >> After 1
> >> <---- ItemMasterCycleSteps.jsp END ---->
> >> Finished calling Item Master Cycle Steps JSP
> >> <--- End Item Master JSP --->
> >>
> >
> >
>
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Multiple Vendor URL JSP Request Source Code Disclosure Vulnerability
Has anybody heard about this vulnerability in weblogic web server? If so, is there
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The problem exists in the way the web server handles decoding a requested URL.
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http://developer.bea.com
"Jay Reynolds" <[email protected]> wrote:
>
>Has anybody heard about this vulnerability in weblogic web server? If
>so, is there
>a fix now or is BEA planning one soon? This is a potentially serious
>security
>hole.
>
>The problem exists in the way the web server handles decoding a requested
>URL.
> If the URL contains hex encoded values for characters in a filename,
>the contents
>of the requested file will be served to the client. If the requested
>file type
>is jsp the source will be sent to the client instead of the compiles
>version.
>
>If anybody has a fix, please post.
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Problems with filters and jsp pages.
I have the following simple filter that checks if there is user information in the session object and redirects accordingly:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class LoginFilter implements Filter
public void init(FilterConfig filterConfig) {}
public void destroy() {}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException
System.out.println("filter");
HttpSession session = ((HttpServletRequest)request).getSession();
String action = request.getParameter("action");
if(action != null && !action.equals("login") && !action.equals("wronglogin"))
if(session.getAttribute("username") == null)
((HttpServletResponse)response).sendRedirect("index.jsp?action=wronglogin");
System.out.println("User not OK, kicking out...");
else
chain.doFilter(request, response);
System.out.println("User OK, letting in...");
else
chain.doFilter(request, response);
}The filter is mapped to an admin page with the name index.jsp. However, I get an error for every <% and %> tag in the file (there are quite a few) when I use the filter with the page. The page works fine without the filter, and the filter seems to work with pages without scriptlets (without the <% and %> tags). Here is the beginning of the error report:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 6 in the jsp file: /admin/index.jsp
Generated servlet error:
Syntax error on tokens, AnnotationName expected instead
An error occurred at line: 6 in the jsp file: /admin/index.jsp
Generated servlet error:
Syntax error on tokens, delete these tokens
An error occurred at line: 6 in the jsp file: /admin/index.jsp
Generated servlet error:
Syntax error on token ";", [ expected
An error occurred at line: 6 in the jsp file: /admin/index.jsp
Generated servlet error:
Syntax error on token ";", [ expected
An error occurred at line: 6 in the jsp file: /admin/index.jsp
Generated servlet error:
Syntax error on token ";", [ expected
Jasper gives me many errors per <% and %> tag. As you can see there is a <% tag on line 6. Any idea, why this does not work?
Thanks!
Message was edited by:
chincillyaWhat is the JSP scriptlet code at line 6 ?
By looking at the code we can identify if there are any syntax errors, otherwise we can't really guess what might be the problem. -
Hi, friends, I need an ergent help !
We are using Weblogic 6.0 without service pack, and using some third-party tag
library in our JSPs. Without HTTPs, everything works fine. After we install SSL
with Weblogic demo certificates, some JSPs hang when tag library is used. It looks
like tag library does its job, but never returns. The JSP returns only when we
close the browser.
I believe when the request reaches inside a JSP, it is nothing to do with SSL
anymore, am I right ?
Any help would be appreciated !
Thanks
JohnThanks, Jerry,
I think the problem is because of request.getParameterNames() doesn't work correctly
for SSL in Weblogic 6.0, do you know if sp2 will fix that problem ?
By the way, I posted another question for specific title.
Thanks
John
Jerry <[email protected]> wrote:
>
Hi John
I believe when the request reaches inside a JSP, it is nothing to dowith SSL
anymore, am I right ?
Yes, that's right, to the best of my knowledge
I strongly recommend putting SP2 on WLS 6.0 -- a ton of kinks were
worked out in the
first 2 service packs.
See if you're still having this problem, and post again --
Cheers
Joe Jerry -
Can i assume that the scopes in JSP work like hashtables?
if i do
Object object = new ReallyBigObjectThing();
request.put("key1", object);
request.put("key2", object);then i am not wasting much resources because references in JSP work just like references in java?
(yes this is the wrong forum, but its more active, so blow me)then i am not wasting much resources because
references in JSP work just like references in java?Just to clarify, a Java Server Page (JSP) is Java. There is no difference, so the comparison in your question does not make sense.
The purpose of the JSP Engine in a Java-based webserver is to take the JSP file and create a Java servlet. The HTML tags that are in the JSP page get integrated into the servlet code. Any custom tag libraries get integrated into the servlet code. Any scriplet code in the JSP file gets transferred into the servlet code. A servlet is basically a Java program that executes inside a web server with a JVM.
At this point, the servlet container prepares the HTTP Response and the web server sends the HTTP Response to the client. -
Loading JSP Request Object on Application Init
Background:
I've been searching for close to two days for an answer to this question, it's full of gotchas and I can't quite get it figured out.
I have an application which contains several web services. These services load up listeners when the services are invoked which makes them available for input. The user has the option of disabling automatic load of these services and invoking them manually by typing in the local url and starting the app. The can allow the autoload which uses a the or allowing the auto load to start. Currently the local url is hardcoded in a property file and this is how the services knows the local endpoint to envoke when it autostarts.
<servlet id="AutoStart_01">
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<servlet-class>com.loadmy.StartupClass.Here</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
This works all fine and well until it's deployed onto a machine that runs a local weblogic cluster that has more than one jvm (and multiple ports) loading the application up.
Problem
The question is, how can you get the applicaton to recoginize the local url for the jvm that is running which can be on different ports? Here's what I've tried
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B - Using the load servlet on start up ( Only the init() function is called and the request object hasn't been created and the request object is what contains ther protocol, server and port information)
C - Loading a jsp page (READ... purposefully loading a jsp page) on application start. The thought here is that this contains a request object, but unfortunately on this doesn't work in my servlet container (currently tomcat 6 but the application is for a web logic machine)
D - I thought about possibly using System.properties() but no luck there
I'm at witts end on this one and I know there is something that can recoginze the local servlet container and extract the url and port from it.
Any suggestions would be great.
Flabergasted [sic]When you request from jsp1 comes to jsp2, it gets the request object.
Now if you want to pass the same request object ot next jsp3, then please call the forward(request, response) as below:
<jsp:forward page="jsp3.jsp">
//This will forward the same request, response object which is there in jsp2 -
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request.getRemoteUser() ;
%>
this jsp will be accessed when the remote user clicks a link from a normal web page...request.getRemoteUser usually gives the user name if the Authentication header is present and in case the user is authenticated via http authentication based mechanism.. when you want the ip address of a machine try the methods in socket.
Something like this,
InetAddress ia=<socketobject>.getInetAddress();
String str=ia.getCanonicalHostName();
Hope this Helps
Hi,
How do i in my jsp, get the user ip address or any
y other kind of identification via JSP..
issit something like this...
<%
request.getRemoteUser() ;
%>
this jsp will be accessed when the remote user
r clicks a link from a normal web page... -
Saving the output from a JSP request
I have developed a decision support web site that amongst other things generates a "report" page. Now my client would like to add the ability for users of the site to have that report emailed out to them.
Sending the email obviously isn't a problem, but getting the content into it is. I really don't want to have to duplicate all the JSP code from the report page (there's a lot, including calls to beans etc), and reformat the entire thing with hundreds of out.write("<table>") like statements, or nasty plain-text formatted equivalents.
So...is there a way to "save" the output generated by the server before it gets sent back to the user - ideally to a local file that I can then just dump straight into the email message. I can't just call the page (internally on the server) to see its output, as it's user-specific and uses a lot of session-related information.
Cheers for any advice...
IainIt's actually possible to do what I want to do by getting the server to call the page internally (I didn't think it was).
A simple URLConnection to the appropriate page with the jessionid appended gives me back the page as the user would see it. I can then just stream the response from that to file/email/whatever.
When the user clicks on their "email" link, I just call a jsp file (or a servlet) with the following code:
URLConnection uc;
BufferedInputStream fin;
BufferedOutputStream fout;
String location = "http://localhost:8080/blah/report.jsp"
+ ";jsessionid=" + session.getId();
String filename = "C:\\output.html";
try
uc = new URL(location).openConnection();
fin = new BufferedInputStream(uc.getInputStream());
fout = new BufferedOutputStream(new FileOutputStream(filename));
int byteRead = fin.read();
while (byteRead != -1)
fout.write(byteRead);
byteRead = fin.read();
fout.close();
fin.close();
catch (Exception e) {}Now all I have to do is go learn how to write multipart emails using JavaMail... -
Generating a XML file from a JSP request Page
Hi,
I am very new to JAVA with XML. My need is i want to capture some data in in a JSP page then after submitting ,it will generate a XML file. How can i do that??? Any help will be highly appriciated. If anybody can give me a good example....
Thx<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Steven Muench ([email protected]):
Are you using our XML SQL Utility that comes with the Oracle XDK for Java? Is the correct result produced, but you are having trouble writing it to a file?<HR></BLOCKQUOTE>
hi steven,
yes i am using xml sql utility and have solved the problem..... as i was working from a remote system i didnot give the correct path that is the c:\.....etc of the machine i was giving http:// thats why i did not write to a file... now its working
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