JSP Migration

I am trying to move a site to a new server, and am having multiple troubles in accomplishing what I thought would be an easy task.
I believe one of the problems is the old server had Tomcat 4 or earlier, and we are now working with Tomcat 5.
Here is a URI of a page in question:
http://legarza.nkv1.com/webapps/legarza/s_page1.jsp
Error message is:
org.apache.jasper.JasperException: /legarza/s_page1.jsp(1,1) The value for the useBean class attribute CCampersBean is invalid.
     org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
     org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
     org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:150)
     org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1227)
     org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
     org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
     org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
     org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:495)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:476)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:464)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
So I change the "class" attribute to "type" and I then get the following errors:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 1 in the jsp file: /legarza/s_page1.jsp
Generated servlet error:
/usr/share/tomcat5/work/PSA/legarza.nkv1.com/webapps/org/apache/jsp/legarza/s_005fpage1_jsp.java:42: cannot resolve symbol
symbol : class CCampersBean
location: class org.apache.jsp.legarza.s_005fpage1_jsp
CCampersBean campers = null;
^
An error occurred at line: 1 in the jsp file: /legarza/s_page1.jsp
Generated servlet error:
/usr/share/tomcat5/work/PSA/legarza.nkv1.com/webapps/org/apache/jsp/legarza/s_005fpage1_jsp.java:44: cannot resolve symbol
symbol : class CCampersBean
location: class org.apache.jsp.legarza.s_005fpage1_jsp
campers = (CCampersBean) jspxpage_context.getAttribute("campers", PageContext.PAGE_SCOPE);
^
2 errors
     org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
     org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
     org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:437)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:497)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:476)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:464)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
I have done many things (and spent a full day trying to get this), but have had no luck past these error points. A list of things I have done includes:
recompiling all .java files
restarting apache after compiles
setting classpath to servlet-api.jar (which is named [servletapi5].jar on this new server)
Any help appreciated. I am at wits end.
Cheers and thanks in advance for any light you can shed on this problem.
Kawhileiwhilei

Ok, taking a stab in the dark at the cause: Probably your classes are not in packages.
As of Java1.4 all classes must be in packages.
If they are not, they cannot be accessed from other packages.
The JSP compiles into a package, ergo it cannot access classes in the "unnamed" package.
At a guess, your old server was running on Java1.3 and didn't have this problem.
Solution
1 - refactor your classes so that they are in a package.
2 - change all your <jsp:useBean> tags so that they have the full class/package name
ie instead of <jsp:useBean id="camper" class="CCampersBean"/>
You need <jsp:useBean id="camper" class="com.mypackage.CCampersBean"/>
3 - recompile, redeploy your app, and restart the server.

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So having to decide between go back to webserver 6.x or adapt the ASP code to JSP, I'm considering the last one. I belong to those who think a native solution is better than any pluggin or something like that.
So far, so good... but then I got stuck. In the whole application (in fact by my suggestion and insistence - my big mouth again -) we used the getstring method from ADODB a lot, which returns the values in the recordset into a formatted string, based on patterns. We can get XML, HTML table, JS arrays, etc. in the blink of an eye.
I tried to google it, but find anything in JSP that allows me to do this without any loop, the (BIG) improvement in performance (my main argument for the change) was dramatic once we take out the loops, and it allowed us to make deeper changes in the code. They can beat-the-damm-loop-out-of-me, if I try to get those loops back�
Does somebody knows a workaround in JSP?

Thanks for your quick response.
Usually there is no problem with use the output parameter as nvarchar in our Stored Procedures (mssql), in fact I was trying that this weekend as alternative, but this add complexity to the SP and drop the performance.
I guess I can take the time to optimize the SQL code, and maintaining backward compatibility for any other system that uses it, but there is a lot of another applications (desktop and web) that use those procedures, and the cost is overwhelming.
Is a lot better to reimplement the "while (Recordset.next()){" instead of mess with the backbone of our applications.
If there is no replacement for the ASP getstring, maybe I need to downgrade to webserver 6.x, (in order to install ASP) or try to implement some similar myself in JSP as a class or something, and test the performance.

Migration to JSF 2.0 - JSP/JspWriter

I am migrating an application from JSF 1.2 to JSF 2.0. In parts of my application, I was using JSP to render part of pages. Specifically, I was using a JspWriter to render some of the content that required streaming the output. My understanding is that Facelets replaced JSP for the view technology in JSF 2.0. I am wondering how I can achieve something similar to JspWriter if I am not using JSP.
Martin

so from where i have to start migration? is there any step by step document? the system is already in production and i have to evaluate the risks of migration.Do you actually NEED Jsf 2.0? The application is already working I presume, so it would seem a huge waste of time, money and effort to migrate it without a good reason to do so. If it isn't broken, don't fix it.
I'd wait until a new application needs to be implemented and then make the choice to use JSF 2.0. A review of all the changes done in JSF 2.0 can be a good place to start to make the decision.

Migrating PCR frontend-JSP forms to Adobe interactive forms-WD Abap Comp

Hi All,
We are currently on Netweaver 7.0 & ECC 6.0 and ESS - MSS Business Package 50.4. We are using JSP Forms on portal front for Personnel Change Requests (PCR's ) where in all the scenarios in the backend are heavily customized with good amount of usage of Javascripts. For certain scenarios, where in a huge amount of information is fetched from ECC 6.0 backend system, JSP are performing really bad and the total time taken to display the form is actually causing a lot of irritation to the end user.
We are planning to propose an upgrade to SAP adobe interactive forms. The prerequisite is that the business wants to reuse all the customized scenarios without any changes and just want to move towards better front end forms.
My questions are:
1. Please list benefits of SAP Adobe interactive forms - ABAP component over JSP forms (performance wise)
2. Issues with SAP Adobe Interactive forms?
3. Since Javascripts do not work in Webdynpro ABAP. How can we implement those front end checks and validations.
3. Any other options available for UI that can be suggested?
All suggestions are welcome. Quick response is appreciated.
Thanks a lot for your time and help.
Best Regards,
Anupama

Is your performance issue with the Javascript with JSP pages? or the Java script you are using within the Adobe form in your WDJ custom application using Adobe form? I have worked on PCR's using ISR framework old school it used to call as PCR and now HCM Processes and form, Developed PCR's using WDJ also integrated workflow with the WDJ PCR for approval(we never had any performance issue) infact ISR frame work was kind of slow compare to custom WDJ solution and less flexible for a developer to develop.
I have also worked created WDA custom application for PCR's , WDA is definitely better when you compare it with WDJ but I have not seen much performance issue with WDJ atleast on custom PCR solutions.
I don't have any case study to share with you, can you please tell what kind of PCR's your client is using and what kind of performance issue you are experiencing and where and why you guys are using Javascript.

JSP Migration

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