"HTTP Status 500 - Internal Server Error" on "Technology Platform Model" View

[xiaoqi]

Hello,

We've modeled our application list into "Application Catalogue", now I have one question about the two pop-up items when clicking the application name link: "Technology Platform Model" and "Technology Strategy Alignment". (See attached picture: 20240507-app-tech-1.png).

I found both links are actually pointing to the same xsl file: technology/core_tl_app_tech_alignment.xsl (I've already enabled this report in Viewer's Report list), however with below slightly different URL:

• Technology Platform Model: https://hostname/uml_model.jsp?XML=repo ... k%26xsl%3D

• Technology Strategy Alignment: https://hostname/report?XML=reportXML.x ... 9&cl=en-gb

The difference is first loads with "uml_model.jsp", while 2nd loads with "report".

In my published viewer, I got error for "Technology Platform Model": see image 20240507-technology-platform-model.png; and OK to display on "Technology Strategy Alignment: see image 20240507-Application-Technology-Strategy-Alignment.png.

I'm using Windows 11, Essential Viewer with 6.20 Update Pack.

I've checked the viewer folder, able to find "uml_models.jsp" are in some files' code, e.g. reportXML.xml, core_menu.xsl, core_uml_model_links.xsl, core_utilities.xsl. But I don't find the file itself exists in the folder.

Any hints on this error? Thanks greatly.
Xiaoqi

Here I've paste the error message in text:

Code: Select all

HTTP Status 500 – Internal Server Error
Type Exception Report

Message An exception occurred processing [uml_model.jsp] at line [113]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: An exception occurred processing [uml_model.jsp] at line [113]

110: 	
111: 			SourceStringReader reader = new SourceStringReader(umlScript);
112: 			// Write the image to "png"
113: 			String desc = reader.generateImage(png);
114: 			png.close();
115: 		
116: 			imageMap.put(imageNameHash, imagePath);	


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:499)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	com.enterprise_architecture.essential.report.LoadCSRF.doFilter(LoadCSRF.java:109)
	com.enterprise_architecture.essential.report.FilterSetLoggingContext.doFilter(FilterSetLoggingContext.java:90)
Root Cause

java.lang.NullPointerException
	net.sourceforge.plantuml.SourceStringReader.generateImage(SourceStringReader.java:111)
	org.apache.jsp.uml_005fmodel_jsp._jspService(uml_005fmodel_jsp.java:246)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	com.enterprise_architecture.essential.report.LoadCSRF.doFilter(LoadCSRF.java:109)
	com.enterprise_architecture.essential.report.FilterSetLoggingContext.doFilter(FilterSetLoggingContext.java:90)
Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/9.0.86

[neil.walsh]

Hi,

The Technology Platform Model View is no longer supported. This should be labelled as deprecated. That's a bug we'll address in the next release. I recommend you turn off the view and menu item to prevent this being shown.

The Technology Strategy Alignment view looks like either you are accessing this view directly (without a PMA value in the URL) therefore it doesn't have any context for (i.e. an application) for showing the data; or there is a problem with the data in the View. If you have a look at the Javascript console in the browser, you might see an error. If so, post it here and we'll take a look.

Neil

[xiaoqi]

Thanks Neil, I've disabled the report "Core: Application Technology Platform Model" and also remove the Report_Menu, now it's not misleading the people when they browsing the views.

For Technology Alignment, I don't see error in JavaScript console, refer to attached image please. So I think it's due to my data issue, I'll follow the guide in university site again for making one more model and see.

Regards, Xiaoqi