Group Tree: Error in Ajax response - message: missing } in XML expression

Question

Hi,
We were using a previous version of Crystal libs and viewer. I wanted to get up to date with the latest jars and viewer so I downloaded and installed the version with Eclipse 3.4.1 and crystal development bundled together.
I've copied the new jars from there into my existing project. I've also copied the folder cyrstalreportviewers into the project. We're using Tomcat 6.
I've now got a problem with the Group Tree at the moment since I started using the latest libraries and crystal report viewers.
My web.xml looks like this.
        <context-param>
          <param-name>crystal_image_uri</param-name>
          <param-value>/crystalreportviewers</param-value>
     </context-param>
     <context-param>
          <param-name>crystal_image_use_relative</param-name>
          <param-value>webapp</param-value>
     </context-param>
        <servlet id="CrystalReportViewerServlet">
          <servlet-name>CrystalReportViewerServlet</servlet-name>
          <display-name>CrystalReportViewerServlet</display-name>
          <servlet-class>
               web.servlet.ReportingViewerServlet
          </servlet-class>
          <load-on-startup>1</load-on-startup>
     </servlet>
       <servlet-mapping id="CrystalReportViewerServletMapping">
          <servlet-name>CrystalReportViewerServlet</servlet-name>
          <url-pattern>/CrystalReportViewerHandler</url-pattern>
     </servlet-mapping>
A request to the uri https://......../WebApp/CrystalReportViewerHandler?id=3
The servlet doesn't do anything that seems to be uncommon. I can post more precisely what it does if needed.
The report will load correctly, I don't get an error page asking if my crystalreportviewers/ path is accessable to the server.
I get a parameter page asking for a value. I enter that and click OK.
The viewer sends a POST request to my Servlet and is handled correctly.
The report is then loaded.
On the click of an item in the Group Tree it sends an Ajax POST request and I then get the following error:
message: missing } in XML expression
fileName: https://localhost:8080/WebApp/crystalreportviewers/allInOne.js
lineNumber: 10
stack: ()@:0
eval("(\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n)")@:0
([object XMLHttpRequest])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
([object Object],[object Object],[object XMLHttpRequest])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:12
([object XMLHttpRequest])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
()@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
([object XMLHttpRequest])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
([object XMLHttpRequest])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
([object Object],[object Event])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
([object Event])@https://localhost:8080/WebApp/crystalreportviewers/allInOne.js:10
name: SyntaxError
Clicking on the Groups headers on the right hand pane work as expected. Although I notice they are not Ajax requests.
I've spent a few days at this now and I feel like I'm running out of options but to revert back to the previous version we were using. I presume this works elsewhere so I've got to be doing something incorrectly with my setup.
If anyone needs more info then please ask.
Thanks,
Patrick

Answer 1

Hi Ted,
Thanks for your reply.
That's our own Servlet. It extends javax.servlet.http.HttpServlet
doGet does the following stuff:
Creates a ReportClientDocument.
Sets the ReportAppServer to "inproc:jrc".
Opens the report as read only.
Gets the DBController and calls logon on it.
Then calls replaceConnection.
Adds some discrete param values.
Creates a CrystalReportViewer.
gets the report source from the report client document.
sets the report source on the crystal report viewer.
set own page to true.
sets the report source in the session.
The crystal Report Viewer then processes the Http Request.
doPost:
gets the report source from the session.
creates a CrystalReportViewer.
sets the report source on the crystal report viewer.
set own page to true.
The crystal Report Viewer then processes the Http Request.
One thing I changed in there was the way the data source was changed. It used to loop through tables.
Tables tables = clientDoc.getDatabaseController().getDatabase().getTables();
newTable.setQualifiedName(qualifiedName);
clientDoc.getDatabaseController().setTableLocation(origTable, newTable);
Now it does this:
DatabaseController dbController = clientDoc.getDatabaseController();
dbController.logon(username, password);
dbController.replaceConnection(new ConnectionInfo(), connectionInfo, null, DBOptions._useDefault);
If you need more info please do let me know. Thanks for your help.
Patrick