Dear all,
I hope you are doing good. I would like to know whether we can generate a
jasper report in java <http://www.javaranch.com/> without using any database
connection. I know we can generate jasper report in java with database
connection. I have generated few reprts in .pdf and .xls format. Now I want
to display some text on the the jasper report in java without database, say
"hello jasper". I am using ireport. I have creaated a file and in that file,
I have added a title in the title section $P{Report_title} . Now in the
program, i am declaring a hashmap and trying put value in the hasmap like,
hm.put("Report_title","Hello Report");
Later I am declaring JasperPrint like as follows.
JasperPrint print=JasperFillManager.fillReportToFile(fileName,
outFileNamePDF, hm);
Here I am having problem about type mismatch:cannot convert from void to
JasperPrint. I am not fully familiar with JasperReport API. I am trying to
learn it with some simple examples first.In order to get the data on the
report what I am supposed to do? Passing value from hashmap? Or shall use
any collections? I would appreciate your suggestions. Thanks in advance.
Please find the code. It's vary simple at the moment.
import java.util.HashMap;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
@SuppressWarnings("unchecked")
public class JasperSimple {
String fileName = "C:\\Documents and
Settings\\abhijit\\JasperSimpleReport.jasper";
String outFileNamePDF = "c:\\JasperSimpleReport.pdf";
HashMap hm = new HashMap();
public JasperSimple() {
super();
}
@SuppressWarnings("deprecation")
public void generateReport() throws ClassNotFoundException,
InstantiationException, IllegalAccessException {
try {
System.out.println("Filling report...");
hm.put("$P{Report_title}","Hello Report");
//JasperReport manager=JasperManager.compileReport(fileName);
JasperPrint print=JasperFillManager.fillReport(fileName, hm);
//byte[] bytes = JasperExportManager.exportReportToPdf(print);
//define and initialize jasperreport engine's exporter for .pdf
JRExporter exporter = new
net.sf.jasperreports.engine.export.JRPdfExporter();
//parameter used for the destined file.
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,
outFileNamePDF);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
//export to .pdf
exporter.exportReport();
System.out.println("Created file: " + outFileNamePDF);
System.out.println("Done!");
} catch (JRException e) {
e.printStackTrace();
}
catch(Exception e1){
e1.printStackTrace();
}
}
public static void main(String[] args) throws ClassNotFoundException,
InstantiationException, IllegalAccessException {
new JasperSimple().generateReport();
System.out.println("No. of argumetns are: " + args.length);
for(int i= 0;i < args.length;i++)
System.out.println("Argument " + i + " is : " + args[i]);
}
}
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