[Spring Framework] :: Spring 4 + JasperReports + JsonDataSource Step 1.

pom.xml

<dependency>

<groupId>net.sf.jasperreports</groupId>

<artifactId>jasperreports</artifactId>

<version>${jasperreports.version}</version>

</dependency>

<dependency>

<groupId>com.google.code.gson</groupId>

<artifactId>gson</artifactId>

<version>2.5</version>

</dependency>

<dependency>

<groupId>net.sf.barcode4j</groupId>

<artifactId>barcode4j</artifactId>

<version>2.1</version>

</dependency>

<dependency>

    <groupId>batik</groupId>

    <artifactId>batik-bridge</artifactId>

    <version>1.6-1</version>

</dependency>

WebConfig.java

@Bean // Jasper preview bean Set.

public JasperReportsViewResolver getJasperReportsViewResolver() {

  final JasperReportsViewResolver resolver = new JasperReportsViewResolver();

  resolver.setPrefix("/resources/jasper/");

  resolver.setSuffix(".jrxml");

  resolver.setReportDataKey("datasource");

  resolver.setViewNames("report_*"); // .jrxml file name & call name

  resolver.setViewClass(JasperReportsMultiFormatView.class);

  resolver.setOrder(0);

  return resolver;

}

//preview sample code

@RequestMapping(value = "test-report", method = RequestMethod.GET)

public String companyList(final Model model) {

try {

Gson gson = new Gson();

testModel tt = new testModel();

tt.setTitle("Hello");

tt.setBarcode("HY12000");

tt.setUsers(sserService.findAllUsers());

InputStream is = new ByteArrayInputStream(gson.toJson(tt).getBytes());

JsonDataSource dataSource = new JsonDataSource(is, "");

model.addAttribute("datasource", dataSource);

model.addAttribute("format", "pdf"); // preview type

return "report_testreoprt";  // return .jrxml file name

} catch (JRException e) {

e.printStackTrace();

return "report_testreoprt"; // return .jrxml file name

}

}

//file Output code.

@Override

public void testPDFDownload(final String jsonData) throws JRException, IOException {

JasperDesign jasperDesign;

JasperPrint jasperPrint;

Resource resource = new ClassPathXmlApplicationContext().getResource("classpath:static/jasper/tesy.jrxml");

InputStream is = new ByteArrayInputStream(jsonData.getBytes());

jasperDesign = JRXmlLoader.load(resource.getInputStream());

JasperReport jasperReport  = JasperCompileManager.compileReport(jasperDesign);

JsonDataSource dataSource = new JsonDataSource(is, "");

jasperPrint = JasperFillManager.fillReport(jasperReport, new HashMap(),

dataSource);

//exportType

JasperExportManager.exportReportToPdfFile(jasperPrint,

"src/main/resources/static/jasper/report.pdf");

}