Problem in Integrate Report Engine 3.7.2 in Java App

Hi,

I am testing using BIRT Report Engine runtime 3.7.2 with Java application. I have done based on the instruction. However, when I run the Java program, it gives me several errors and complains some packages cannot be found. Here is situation.

I installed BIRT runtime 3.7.2 under Windows 7 64 bit machine on C:\Apps\birt-runtime-3_7_2.
Since I use Windows 7, I setup the BIRT_HOME in Environment Variables as System variable and the Value is C:\Apps\birt-runtime-3_7_2.
I went to C:\Apps\birt-runtime-3_7_2\ReportEngine and run genReport and got html file created successfully.
I then made a test java program in the directory of C:\Apps\src\REAPI\Test.java. the content is as follows:

package REAPI;

import java.util.logging.Level;

import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.EngineConstants;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.core.exception.CoreException;

public class Test {

public void runReport() throws EngineException
{

EngineConfig config = null;

try{
config = new EngineConfig( );
config.setLogConfig("c:/temp", Level.INFO);

try {
Platform.startup(config);
} catch (Exception e1) {
e1.printStackTrace();
}
} catch(Exception e2) {
e2.printStackTrace();
}
}

/**
* @param args
*/
public static void main(String[] args) {
try
{

Test ex = new Test( );
ex.runReport();

}
catch ( Exception e3 )
{
e3.printStackTrace();
}
}
}

I made a test.bat file to include all jar files in Report Engine\lib and use Java 1.6 to compile the java program. Here is the test.bat in C:\Apps\src

set BIRTCLASSPATH=
for %%i in (%BIRT_HOME%\ReportEngine\lib\*.jar) do set BIRTCLASSPATH=%%i;!BIRTCLASSPATH!
javac -cp "%BIRTCLASSPATH%";C:\Apps\src REAPI/Test.java

After I run this batch file, I got 9 errors and one of them is package org.eclipse.birt.core.framework doe not exist. (Please see attached file about more error information). I do not know what setup I need to do in order for finding the packages it complains or what have I done wrong.

Could anyone there lift me on this because I am really frustrated and people are waiting on me to setup this report engine for our Java application?

Appreciate ahead!!!

Richard

P.S. Please see attachment to take a look more on error messages.

Find more posts tagged with

Comments

JasonW

Can you try removing the environment variable BIRT_HOME when using the java api. Next the length of the cp string may be to long for windows. So as a test create a folder off the c drive called BirtLibs and then copy all the jars from the ReportEngine\lib directory to the new directory. Then modify your script to point at that directory.

Jason

Xuechang

Thank you for the reply! I will try it.

One more question is will the report engine start without web server running or not?

Thanks!

Richard

Xuechang

Jason,

I did based on your instruction and get the same results. Still all the packages are not found when I compile the Test java program. Please see attached file.

I guess the web server probably needs to run so that the report engine or Platform can be started.

Thanks!

Richard

johnw

This looks like a problem with your classpath. 
 
For BIRT 3.7.x, I use the following. I have a separate class that is responsible for running the report: 
 
<pre class='_prettyXprint _lang-auto _linenums:0'>
package com.digiassn.blogspot.birt;

import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunAndRenderTask;
import org.eclipse.birt.report.engine.api.PDFRenderOption;
import org.eclipse.birt.report.engine.api.impl.ReportEngine;

public class ReportExecutor {
public static void ExecuteReport(String reportDesign)
{
try {
EngineConfig config = new EngineConfig();

Platform.startup(config);

ReportEngine engine = new ReportEngine(config);

IReportRunnable reportRunnable = engine.openReportDesign(reportDesign);
IRunAndRenderTask runAndRender = engine.createRunAndRenderTask(reportRunnable);

PDFRenderOption option = new PDFRenderOption();
option.setOutputFileName("C:/TEMP/output_test.pdf");
option.setOutputFormat("PDF");
runAndRender.setRenderOption(option);

runAndRender.run();

runAndRender.close();
engine.destroy();
Platform.shutdown();
} catch (EngineException e) {
e.printStackTrace();
} catch (BirtException e) {
e.printStackTrace();
}
}
}
</pre>
 
The Main class would look something like: 
<pre class='_prettyXprint _lang-auto _linenums:0'>
package com.digiassn.blogspot.birt;

public class Runner {
/**
* @param args
*/
public static void main(String[] args) {
ReportExecutor executor = new ReportExecutor();

executor.ExecuteReport(args[0]);

}

}
</pre>
 
And when I go to run it, it looks something like: 
<pre class='_prettyXprint _lang-auto _linenums:0'>
"C:\Program Files\Java\jre6\bin\javaw.exe" -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:50354 -Dfile.encoding=Cp1252 -classpath <All of the BIRT Jars are included here> com.digiassn.blogspot.birt.Runner
</pre>
 
The easiest way to get the correct command line run parameters is to set a breakpoint in the main of your class in Eclipse, debug, then in the Debug perspective, right-mouse click on your Main class and go to Properties. It gives you the entire command line string.

Xuechang

Thanks, Jason!
I will try it later.

Richard

JasonW

It was John who responded.

Jason

Xuechang

I tried the codes and it works now!

Appreciate John and Jason for the lifting!

Richard