JasperReport Nullpointer exception in

[anieshuk]

Hai all

I am trying to show a jasper report through COntroller instead of what is followed in the CVS.when iam using the report i am getting following error


java.lang.NullPointerException
org.springframework.web.servlet.view.jasperreports .AbstractJasperReportsView.populateHeaders(Abstrac tJasperReportsView.java:561)
org.springframework.web.servlet.view.jasperreports .AbstractJasperReportsView.renderMergedOutputModel (AbstractJasperReportsView.java:497)
org.springframework.web.servlet.view.AbstractView. render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet. render(DispatcherServlet.java:928)
org.springframework.web.servlet.DispatcherServlet. doDispatch(DispatcherServlet.java:705)
org.springframework.web.servlet.DispatcherServlet. doService(DispatcherServlet.java:625)
org.springframework.web.servlet.FrameworkServlet.s erviceWrapper(FrameworkServlet.java:386)
org.springframework.web.servlet.FrameworkServlet.d oGet(FrameworkServlet.java:346)
javax.servlet.http.HttpServlet.service(HttpServlet .java:689)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)

mycode is

ReportController2 implements Controller{
protected final Log logger=LogFactory.getLog(getClass());
private DataSource datasource;
JasperReportsPdfView reportView=new JasperReportsPdfView();
public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response)
{
//Set the source jasper file
reportView.setUrl("/WEB-INF/reports/Springreport.jasper");
//set the jdbcdatasource
reportView.setJdbcDataSource(datasource);
//set the exp params for the html format
Map expparams=new HashMap();
expparams.put("net.sf.jasperreports.engine.export. JRHtmlExporterParameter.IMAGES_URI","/WEB-INF/reports/images");
reportView.setExporterParameters(expparams);

logger.info("The class is"+reportView.getClass());

Map model=new HashMap();
model.put("format",".pdf");
model.put("Springparameter","Good Try");


return new ModelAndView(reportView,model);
}

public void setDataSource(DataSource ds)
{
logger.info("The datasource in reportview is"+ds);
this.datasource =ds;
}


Help pls
Aniesh U.K

[robh]

Aniesh,

Check out the posting here on JIRA [http://opensource2.atlassian.com/pro...owse/SPR-1241] for more details on this.

In 1.3 you will be able to use the JasperReportsViewResolver. You can manually construct a report instance and the code is shown in the JIRA post.

Rob

[anieshuk]

Hai robh

Thanks for u kind reply.I got an idea.I think i was missing applicationContext in mycode.Let me try with that and report to u.


Thanks
Aniesh U.K