SUBREPORT_DIR and Sub-SubReports

Question

Hi Experts,

I am using iReport with JasperReports 1.3.4.

A master report contains two subreports, one of which has a subreport. All .jasper files are in the same directory.

iReport generated a SUBREPORT_DIR parameter. The subreportExpression gives the subreport filename as ![CDATA[$P{SUBREPORT_DIR} + "subreport.jasper"].

Everything works when run within iReport.

The Java web application to generate reports receives a SUBREPORT_DIR parameter by calling JasperFillManager.fillReport(String sourceFileName, Map parameters, JRBeanCollectionDatasource). The SUBREPORT_DIR is set to the master report's directory.

The fillReport method throws an exception:

net.sf.jasperreports.engine.JRException: Could not load object from location : .sub-subreport.jasper.

The first subreport seems to process its subreport(embedded subreport), but SUBREPORT_DIR is not being used to generate the name of the sub-subreport.

What am I missing? How should this scenario be handled?

Thank you.

Update

In the Java class:

filepath = request.getSession(true).getServletContext().getRealPath("/jsps/jrxmls/");
param.put("SUBREPORT_DIR",filepath);

If I change it to the empty string (""). then it will pass null value right?

My report structure is like:

 MasterReport -> Subreport1 -> Sub-Subreport1

The problem is not able to load "Sub-Subreport1".

Answer 1

From the exception message it seems that you are using a "." as the SUBREPORT_DIR parameter. If so, try using "./" or just "."

Answer 2

Click in 'Subreport1', go to the properties tab -> Subreport properties -> Parameters

You will pass your 'MasterReport' SUBREPORT_DIR parameter as a parameter to 'Subreport1'. Create this entry:

Name: SUBREPORT_DIR Expression: $P{SUBREPORT_DIR}

Don't forget to recompile your reports and make sure to republish your web app in the application server.