NullPointerException at "engine = factory.createReportEngine(config);"

I am using:
eclipse luna 64bit 
windows 8.1
 
birt-runtime-4_4_1 from the following downloadside 
"<a data-ipb='nomediaparse' href='http://www.eclipse.org/downloads/download.php?file=/birt/downloads/drops/R-R1-4_4_1-201409161320/birt-runtime-4_4_1-20140916.zip'>http://www.eclipse.org/downloads/download.php?file=/birt/downloads/drops/R-R1-4_4_1-201409161320/birt-runtime-4_4_1-20140916.zip"</a>
 
 
I have added BirtReport to Classpath
I have copied "birt-runtime-4_4_1/ReportEngine/lib/*" to "/project/WebContent/WEB-INF/lib/*"
 
I write the following servlet:
 
<div>
<pre class="_prettyXprint">
package org.report.print;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;
import java.util.logging.Level;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.birt.core.framework.IPlatformContext;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.core.framework.PlatformFileContext;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportEngineFactory;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.PDFRenderOption;

/**
* Servlet implementation class ReportPrintingServlet
*/
@WebServlet("/print")
public class ReportPrintingServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
// private static String REPORT_ENGINE ="C:/dev/libraries/birt-runtime-4_4_1/ReportEngine;
private static String REPORTS_PATH = "C:/dev/workspace/ws05/BirtReportProject01/utilities/reports";
private static String LOG_PATH = "C:/dev/workspace/ws05/BirtReportProject01/utilities/logs";

/**
* @see HttpServlet#HttpServlet()
*/
public ReportPrintingServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter printWriter = response.getWriter();
printWriter.println("<h1>Hello World!</h1>");

ServletContext servletContext = getServletConfig().getServletContext();
Object attribute = servletContext.getAttribute("reportprintproperties");
Properties properties = (Properties) attribute;
try {
generatePDFFile(properties, request);
} catch (Exception e) {
e.printStackTrace();
}

}

@SuppressWarnings("deprecation")
private void generatePDFFile(Properties properties,
HttpServletRequest request) throws Exception {

IReportEngine engine = null;
IReportRunnable runnable = null;

PDFRenderOption options = new PDFRenderOption();
EngineConfig config = new EngineConfig();
// config.setEngineHome(REPORT_ENGINE);
config.setLogConfig(LOG_PATH, Level.FINE);
IPlatformContext context = new PlatformFileContext();
config.setEngineContext(context);
IReportEngineFactory factory = (IReportEngineFactory) Platform
.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
engine = factory.createReportEngine(config);
try {
runnable = engine.openReportDesign(REPORTS_PATH);
} catch (EngineException e) {
System.err.println("Design " + REPORTS_PATH + " not found!");
e.printStackTrace();
engine.destroy();
}

}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}

}</pre>
I get in the code above a NullPointerException at the CodeLine:
<pre class="_prettyXprint">
engine = factory.createReportEngine(config);</pre>
The error message is:
<div>
<pre class="_prettyXprint">
INFORMATION: Reloading Context with name [/BirtReportPrinting] is completed
java.lang.NullPointerException
at org.report.print.ReportPrintingServlet.generatePDFFile(ReportPrintingServlet.java:132)
at org.report.print.ReportPrintingServlet.doGet(ReportPrintingServlet.java:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Dez 10, 2014 9:14:24 AM org.apache.catalina.core.StandardContext reload</pre>
</div>
 
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Comments

mwilliams

I think there have been some issues on Windows 8 and Java 8. What version of Java are you using? Unfortunately I don't have a Windows 8 machine to test on.

skumarcse

I think Platform.startup( config ) is missing after config.setLogConfig(LOG_PATH, Level.FINE); in your program. it should print **** World on your report page. But, i do not see any .rptdesign file feed into openReportDesign method as in REPORTS_PATH. How you generate a report without BIRT design feed.

mwilliams

Good call skumarcse. I should have looked closer.
 
haglo, did this solve your issue?