Streaming JasperReport to Apache Tomcat Server with OutputStream

0

Hi,

I created a JasperReport  and saved the .jrxml at <reportLocation>. It was no problem to write a Java program which creates a PDF file from this report.

But now I want to write a Spring Boot Project to stream this report to a Tomcat Server, to show it in the browser.

But the output has the wrong format. It looks like this:

output

It should have HTML layout. How can I do that?

Another problem that I have is that if the report is to long, it doesn't fit in the outputStream and I get an Error.

This is my SpringBootApplication:

@SpringBootApplication
@Controller
public class TestProject2Application {
 
 
    @RequestMapping(method = RequestMethod.GET)
    @ResponseBody
    public void RepPerformance2(OutputStream outputStream) {
 
        // create a database connection
        MyOracleConnection conManager = new MyOracleConnection("jdbc:oracle:thin:@/...");
        Connection con = conManager.openConnection(...);
 
        // create the report
        reports.createReport(outputStream);
 
        // close database connection
        conManager.closeConnection(con);
 
    }
    public static void main(String[] args) {
        SpringApplication.run(TestProject2Application.class, args);
    }
}

This runs my JasperReport:

   private boolean runReport(String reportLocation, HashMap<String, Object> parameter, OutputStream outputStream) {
        parameter.put(JRParameter.REPORT_VIRTUALIZER, virtualizer);
        try {
            JasperReport jasperReport = JasperCompileManager.compileReport(reportLocation);
            JasperFillManager.fillReportToStream(jasperReport, outputStream, parameter, con);
        } catch (JRException ex) {
            System.out.println("JRException");
            ex.printStackTrace();
            return false;
        }
        virtualizer.cleanup();
        return true;
    }


Thanks for your ideas,

Rebecca

RebeccaS.'s picture
Joined: Mar 10 2015 - 7:23am
Last seen: 4 years 2 months ago

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