java export pdf function

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• First add dependencies, the version must be consistent, here is a pit, otherwise the font cannot be recognized

• <!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf -->
          <dependency>
              <groupId>com.itextpdf</groupId>
              <artifactId>itextpdf</artifactId>
              <version>5.2.0</version>
          </dependency>
   
          <!-- https://mvnrepository.com/artifact/com.itextpdf/itext-asian -->
          <dependency>
              <groupId>com.itextpdf</groupId>
              <artifactId>itext-asian</artifactId>
              <version>5.2.0</version>

• java code

• /**
  	 * Export PDF file java project www.fhadmin.org
  	 * @param orkQ
  	 * @param request
  	 * @param response
  	 * @return
  	 */
  	@ResponseBody
  	@RequestMapping(value = "exportPdf")
  	public AjaxJson exportPdf(orkQ orkQ, HttpServletRequest request, HttpServletResponse response) throws Exception {
  		AjaxJson j = new AjaxJson();
  		Page<orkQ> page = orkQService.findPage(new Page<orkQ>(request, response, -1), orkQ);
  		List<orkQ> list = page.getList();
  		// The first step is to instantiate a document object
  		Document document = new Document(new RectangleReadOnly(842F, 595F));
  		// The second step is to set the path to out
  		// The second step is to set the path to out
  		//FileOutputStream out = new FileOutputStream("D:/workbook111.pdf");
  		//If the browser needs to output in the browser through request, use the following method
  		OutputStream out = response.getOutputStream();
  		// The third step, set the character
  		BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
  		Font fontZH = new Font(bfChinese, 12.0F, 0);
  		// The fourth step is to output the pdf file to disk
  		PdfWriter writer = PdfWriter.getInstance(document, out);
  		// The fifth step, open the generated pdf file
  		document.open();
  		// The sixth step, set the content
  		String title = "IT事";
  		try {
  			Paragraph elements = new Paragraph(title, fontZH);
  			elements.setAlignment(Paragraph.TITLE);
   
  			document.add(elements);
  //			document.add(new Paragraph(new Chunk(title,fontZH).setLocalDestination(title)));
  			document.add(new Paragraph("\n"));
  		} catch (DocumentException e) {
  			e.printStackTrace ();
  		}
  		// add pictures
   
  		/*Image image = Image.getInstance("Picture Path");
  		image.setAlignment(Image.ALIGN_CENTER);
  		image.scalePercent(40); //Scaling according to proportion
  		//image.setAbsolutePosition(40,60);
  		document.add(image);*/
  		// Create a table. Note that the 3 here means three columns. When adding through table.addCell, you must add all the columns of the entire row.
  		//Create table object
  		PdfPTable table = new PdfPTable(3);
  		PdfPCell cell = new PdfPCell();
  		Paragraph zhi = new Paragraph("Event Summary",fontZH);
  		cell.setPhrase(zhi);
  		//Cells are aligned horizontally in the center
  		cell.setUseAscender(true);
  		cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  		table.addCell(cell);
   
  		zhi = new Paragraph("Contact",fontZH);
  		cell.setPhrase(zhi);
  		cell.setUseAscender(true);
  		cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  		table.addCell(cell);
   
  		zhi = new Paragraph("Event Type",fontZH);
  		cell.setPhrase(zhi);
  		cell.setUseAscender(true);
  		cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  		table.addCell(cell);
  		for (int i = 0;i<list.size();i++) {
  			zhi = new Paragraph(list.get(i).getItSummary(),fontZH);
  			cell.setPhrase(zhi);
  			cell.setUseAscender(true);
  			cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  			table.addCell(cell);
  			zhi = new Paragraph(list.get(i).getContacts(),fontZH);
  			cell.setPhrase(zhi);
  			cell.setUseAscender(true);
  			cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  			table.addCell(cell);
  			zhi = new Paragraph(list.get(i).getItType(),fontZH);
  			cell.setPhrase(zhi);
  			cell.setUseAscender(true);
  			cell.setHorizontalAlignment(Element.ALIGN_CENTER);
  			table.addCell(cell);
   
  		}
  		document.add(table);
  		document.add(new Paragraph("\n"));
  		// The seventh step, close the document
  		document.close();
   
   
  	
  		return j;
  }

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