JasperReports Installation and Setup in WebSphere Studio 5.1.1
Wow!

I love JasperReports!

Alright, I had to download JasperAssistant and JasperReports version 0.6.4 and iText-1.2.jar to get everything running.

Since I am using WSAD 5.1.1 I needed to install JasperAssistant like so:
1. I downloaded JasperAssistant_1.5.1_Eclipse2.1.3.zip
2. I unzipped the .zip file and found a features folder and a plugins folder.
3. I placed plugins/com.jasperassistant.designer_1.5.1 into the c:/program files/ibm/websphere studio/eclipse/plugins folder.
4. I placed the features/com.jasperassistant.designer_1.5.1 into the c:/program files/ibm/websphere studio/eclipse/features folder.
5. I started up Websphere Studio 5.1.1 and whaddayaknow JasperAssistant's Welcome screen appeared.

Then I simply created a DataSource that implements JRDataSource and added a constructor that recieves a List of objects. (in this case County objects)

The class that I needed to create looks like the following:

public class WorkCountyDataSource implements JRDataSource{

public WorkCountyDataSource(List list){
this.data = list;
}

private List data;
private int index;

/* (non-Javadoc)
* @see net.sf.jasperreports.engine.JRDataSource#next()
*/
public boolean next() throws JRException {
index ++;
return (index < data.size());
}

/* (non-Javadoc)
* @see net.sf.jasperreports.engine.JRDataSource#getFieldValue(net.sf.jasperreports.engine.JRField)
*/
public Object getFieldValue(JRField field) throws JRException {
County county = (County) data.get(index);
Object value = null;
try{
Object [] args = { };
Class [] paramTypes = { };
Class countyClass = county.getClass();
Method getMethod = countyClass.getMethod(field.getName(), paramTypes);
value = getMethod.invoke(county, args);

}
catch(Exception e){
throw new JRException(e.getMessage());
}
return value;
}

}

My WorkCountyReportAction class looks like the following:

public ActionForward unspecified(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception{

// Get the userid out of the session
String userId = getUser(request.getSession());
if(StringUtils.isEmpty(userId)){
return mapping.findForward("logoff");
}

BudgetDevelopmentManager mgr = (BudgetDevelopmentManager) getBean("budgetDevelopmentManager");

List workCounties = mgr.getWorkCounties();

Map parameterMap = new HashMap();
parameterMap.put("countyId", "Something Crazy");

WorkCountyDataSource workCountyDataSource = new WorkCountyDataSource(workCounties);

response.setContentType("application/pdf");
try {
JasperRunManager.runReportToPdfStream(
getClass().getClassLoader().getResourceAsStream(
"/WEB-INF/reports/workCounty.jasper"),
response.getOutputStream(),
parameterMap,
workCountyDataSource
);
} catch (Exception e) {
e.printStackTrace(System.out);
}

// return to the page that invoked this action
return null;
}

JasperAssistant:
http://www.jasperassistant.com/installation.html
http://www.jasperassistant.com/download.html

iText:
http://www.lowagie.com/iText/download.html

JasperReports:
http://jasperreports.sourceforge.net/
http://sourceforge.net/projects/jasperreports

- posted by ThinkEddy @ 4:38 PM