带有iText和Spring MVC的Pdf模板

Question

我想从模板创建一个PDF(用PDF形式显示这里在Spring MVC),并输出到浏览器中使用AbstractPdfView,但我不知道如何获得一个Document从PdfStamper,或者如果我应该使用PdfWriter..任何想法？以下是我到目前为止的代码,谢谢

public class RecipePdf extends AbstractPdfView {

@Override
protected void buildPdfDocument(Map<String, Object> model, Document document,
        PdfWriter pdfWriter, HttpServletRequest request, HttpServletResponse response)
        throws Exception {

    PdfReader pdfTemplate = new PdfReader ("/WEB-INF/template/recipe.pdf");
    FileOutputStream fileOutputStream = new FileOutputStream("test.pdf");
    PdfStamper stamper = new PdfStamper(pdfTemplate, fileOutputStream);
    stamper.setFormFlattening(true);

    stamper.getAcroFields().setField("number", "12345");

    stamper.close();
    pdfTemplate.close();

Answer 1

Spring的AbstractPdfStamperView和iText可用于使用预定义的模板生成PDF.

package com.pdf.view;

import java.util.Locale;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.MessageSource;
import org.springframework.context.MessageSourceAware;
import org.springframework.web.servlet.view.document.AbstractPdfStamperView;

import com.lowagie.text.pdf.PdfStamper;

public class PDFView extends AbstractPdfStamperView implements
        MessageSourceAware {

    private MessageSource messageSource;

    @Override
    public void setMessageSource(MessageSource messageSource) {
        this.messageSource = messageSource;
    }

    @Override
    protected void mergePdfDocument(Map<String, Object> model,
            PdfStamper stamper, HttpServletRequest request,
            HttpServletResponse response) throws Exception {

        stamper.setFormFlattening(true);
            String customerName = (String) model.get("customerName");

        Locale locale = request.getLocale();
        stamper.getAcroFields().setField("customerNameLabel",
                messageSource.getMessage("label.customername", null, locale));

        stamper.getAcroFields().setField("customerNameValue", customerName);

        stamper.close();
    }
}

我使用了XMLViewResolver.下面是spring-servlet.xml中的条目:

   <bean class="org.springframework.web.servlet.view.XmlViewResolver">
      <property name="location">
         <value>/WEB-INF/spring-pdf-views.xml</value>
      </property>
   </bean>

以下是spring-pdf-views.xml的内容

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">

    <bean id="invoicePDF"
        class="com.pdf.view.PDFView">
        <property name="url" value = "/WEB-INF/resources/templates/invoiceTemplate.pdf" />
    </bean>
 </beans>

下面是控制器代码中定义的方法,它将呈现视图.此处在ModelAndView中设置的视图名称与上面的spring-pdf-views.xml中定义的相同.

@RequestMapping(value = "/pdf",method = RequestMethod.POST)
public ModelAndView renderPDF(HttpServletRequest request,
        HttpServletResponse response) throws Exception {

        ModelAndView mav = new ModelAndView("invoicePDF");
        mav.addObject("customerName", "XYZ"); 
        return mav;
    }