apache pdfbox demo on W-8BEN irs form

pom.xml

@@ -35,6 +35,7 @@
         <jstl-version>1.2</jstl-version>
         <junit-version>4.10</junit-version>
         <mail-version>1.4.5</mail-version>
+        <pdfbox.version>1.8.2</pdfbox.version>
         <servlet-api-version>2.5</servlet-api-version>
         <slf4j-version>1.5.10</slf4j-version>
         <spring-security-version>3.1.3.RELEASE</spring-security-version>
@@ -304,6 +305,11 @@
             <version>${fest-assert.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.pdfbox</groupId>
+            <artifactId>pdfbox</artifactId>
+            <version>${pdfbox.version}</version>
+        </dependency>
 
         <!-- ==============================================================================================  -->
         <!-- Runtime only dependencies (runtime scoped)                                                      -->

src/main/java/com/lagnada/xmx1024/controller/w8/W8Controller.java

@@ -0,0 +1,112 @@
+package com.lagnada.xmx1024.controller.w8;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.Resource;
+import org.springframework.stereotype.Controller;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletResponse;
+import javax.validation.Valid;
+import java.io.IOException;
+import java.io.InputStream;
+
+import static java.lang.String.format;
+import static org.apache.commons.io.IOUtils.closeQuietly;
+import static org.springframework.web.bind.annotation.RequestMethod.GET;
+import static org.springframework.web.bind.annotation.RequestMethod.POST;
+
+@Controller
+@RequestMapping(value = "/w8")
+public class W8Controller
+{
+    @Value("classpath:fw8ben.pdf")
+    private Resource blankW8Pdf;
+
+    @ModelAttribute("w8Model")
+    private W8Model w8Model()
+    {
+        return new W8Model();
+    }
+
+    @RequestMapping(method = GET)
+    public String handleView()
+    {
+        return "w8";
+    }
+
+    @RequestMapping(method = POST)
+    public String handlePost(@Valid W8Model w8Model, BindingResult bindingResult, HttpServletResponse response) throws Exception
+    {
+        if (bindingResult.hasErrors())
+        {
+            return "w8";
+        }
+
+        PDDocument pdf = loadPdfDoc();
+        try
+        {
+            PDDocumentCatalog docCatalog = pdf.getDocumentCatalog();
+            PDAcroForm acroForm = docCatalog.getAcroForm();
+            PDField nameOfIndividualOrOrganizationField = acroForm.getField("f1-1.f1-1");
+            nameOfIndividualOrOrganizationField.setValue(w8Model.getPartOne().getBeneficialOwnerName());
+
+            PDField incorporationCountryField = acroForm.getField("f1-2.f1-2");
+            incorporationCountryField.setValue(w8Model.getPartOne().getIncorporationCountry());
+
+            PDField streetField = acroForm.getField("f1-3.f1-3");
+            streetField.setValue(w8Model.getPartOne().getPermanentResidenceAddress().getStreetAddress());
+
+            PDField cityField = acroForm.getField("f1-4.f1-4");
+            cityField.setValue("Hilsinki");
+
+            PDField countryField = acroForm.getField("f1-5.f1-5");
+            countryField.setValue("Finland");
+
+            PDField aCheckbox = acroForm.getField("c1-3.c1-3");
+            aCheckbox.setValue("Yes");
+
+            String test = "that";
+            System.out.println(test);
+
+            response.setContentType("application/pdf");
+            response.setHeader("Content-Disposition", format("attachment; filename=%s.pdf", "fw8ben_filled"));
+            pdf.save(response.getOutputStream());
+        }
+        finally
+        {
+            closePdfQuietly(pdf);
+        }
+        return null;
+    }
+
+    private PDDocument loadPdfDoc() throws IOException
+    {
+        InputStream is = null;
+        PDDocument pdfDoc;
+        try
+        {
+            is = blankW8Pdf.getInputStream();
+            pdfDoc = PDDocument.load(is);
+        }
+        finally
+        {
+            closeQuietly(is);
+        }
+        return pdfDoc;
+    }
+
+    private void closePdfQuietly(PDDocument pdf) throws IOException
+    {
+        if (pdf != null)
+        {
+            pdf.close();
+        }
+    }
+
+}