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	private ModelAndView createContract(Map<String, Object> contractor, ModelAndView mv) {
		try {
			// Initial setup, create credentials instance.
			Credentials credentials = Credentials.serviceAccountCredentialsBuilder()
					.fromFile("pdfservices-api-credentials.json")
					.build();

			//Create an ExecutionContext using credentials and create a new operation instance.
			ExecutionContext executionContext = ExecutionContext.create(credentials);
			CreatePDFOperation htmlToPDFOperation = CreatePDFOperation.createNew();

			// Set operation input from a source file.
			FileRef source = FileRef.createFromLocalFile("src/main/webapp/WEB-INF/jsp/st/contractors/index.zip");

			htmlToPDFOperation.setInput(source);

			// Provide any custom configuration options for the operation
			// We pass person data here to dynamically fill out the HTML
			setCustomOptionsAndPersonData(htmlToPDFOperation, contractor.get("workers["+1+"][full_name]"));

			// Execute the operation.
			FileRef result = htmlToPDFOperation.execute(executionContext);

			// Save the result to the specified location. Delete previous file if exists
			File file = new File(contractFilePath);
			Files.deleteIfExists(file.toPath());

			result.saveAs(file.getPath());

		} catch (ServiceApiException | IOException | SdkException | ServiceUsageException ex) {
			LOG.error("Exception encountered while executing operation", ex);
		}
		mv.setViewName("jsonView");
		return mv;
	}

	private static void setCustomOptionsAndPersonData(CreatePDFOperation htmlToPDFOperation, Object str) {
		//Set the dataToMerge field that needs to be populated in the HTML before its conversion
		JSONObject dataToMerge = new JSONObject();
		dataToMerge.put("contractorWorker", str);

		// Set the desired HTML-to-PDF conversion options.
		CreatePDFOptions htmlToPdfOptions = CreatePDFOptions.htmlOptionsBuilder()
				.includeHeaderFooter(false)
				.withDataToMerge(dataToMerge)
				.build();
		htmlToPDFOperation.setOptions(htmlToPdfOptions);
	}

	@RequestMapping(value="/st/contractors/pdf.do")
	public void downloadContract(HttpServletResponse response) {
		Path file = Paths.get(contractFilePath);

		response.setContentType("application/pdf");
		response.addHeader("Content-Disposition", "attachment; filename=econtract.pdf");
		try {
			Files.copy(file, response.getOutputStream());
			response.getOutputStream().flush();
		} catch (IOException ex) {
			ex.printStackTrace();
		}
	}