jsp - 如何将 Jsp 页面转换为 PDF 以及如何进一步保存

Question

我正在制作一个基于 Web 的计费系统，首先我要获取用户填写的表格，然后需要将其转换为 PDF .. 我正在使用 JSP 所以我想问的是我不知道如何转换将 JSP 表单转换为 Pdf 并保存该 pdf 文件？请告诉我如何将该表格转换为 pdf 并将其保存到用户的机器中。？

Answer 1

package com.sample.pdfconvertor;       
import com.lowagie.text.Document;    
import com.lowagie.text.Paragraph;    
import com.lowagie.text.pdf.PdfWriter;    
import java.io.File;    
import java.io.FileOutputStream;    
public class PDFConversion    
{    
 /**   
  * This method is used to convert the given file to a PDF format   
  * @param inputFile - Name and the path of the file   
  * @param outputFile - Name and the path where the PDF file to be saved   
  * @param isPictureFile   
  */   

  private void createPdf(String inputFile, String outputFile, boolean isPictureFile)    
  {    
   /**   
    * Set the page size for the image   
    */   
     Rectangle pageSize = new Rectangle(2780, 2525);    
     Document pdfDocument = new Document(pageSize);    
     String pdfFilePath = outputFile;    

     try    
     {    
       FileOutputStream fileOutputStream = new FileOutputStream(pdfFilePath);    

       PdfWriter writer = null;    

       writer = PdfWriter.getInstance(pdfDocument, fileOutputStream);    

       writer.open();    

       pdfDocument.open();    

       /**   
        * Proceed if the file given is a picture file   
       */   

       if (isPictureFile)    
       {    
          pdfDocument.add(com.lowagie.text.Image.getInstance(inputFile));    
       }    

       /**  
        * Proceed if the file given is (.txt,.html,.doc etc)   
        */   

      else      
      {    
          File file = new File(inputFile);    
         pdfDocument.add(new Paragraph(org.apache.commons.io.FileUtils.readFileToString(file)));    

      }    

      pdfDocument.close();    

      writer.close();    
  }    
  catch (Exception exception)    
  {    
     System.out.println("Document Exception!" + exception);    
  }    

 }     


 public static void main(String args[])    
 {    

   PDFConversion pdfConversion = new PDFConversion();    

  //pdfConversion.createPdf("C:/shunmuga/tajmahal.jpg", "C:/shunmuga/tajmahal.pdf", true);    


  // For other files    

  pdfConversion.createPdf("a.html","sample.pdf", false);    

}