itext 生成pdf、pdf模板生成pdf

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itext生成PDF、PDF模板生成PDF

一、itxet生成PDF五个步骤

二、itext生成pdf

1.代码

 1.1.依赖

<!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf --> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.13</version> </dependency> <!-- https://mvnrepository.com/artifact/com.itextpdf/itext-asian --> <!--字体集--> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itext-asian</artifactId> <version>5.2.0</version> </dependency> 

 1.2基本使用

代码如下

/ * * @param value 文本 * @param font 字体 * @param horizontalAlignment 水平样式 0-left, 1-center, 2-right * @param verticalAlignment 垂直样式 4-top, 5-middle, 6-bottom; * @param colspan 列合并 * @param rowspan 行合并 * @param borderSide 外边框 * 0-默认 * 1-隐藏上边框 * 2-隐藏下边框 * 3-隐藏上、下边框 * 4-隐藏左边框 * 5-隐藏左、上边框 * 6-隐藏左、下边框 * 7-隐藏左、上、下边框 * 8-隐藏右边框 * 9-隐藏右、上边框 * 10-隐藏右、下边框 * 11-隐藏右、上、下边框 * 12-隐藏左、右边框 * 13-隐藏上、左、右边框 * 14-隐藏下、左、右边框 * 15-隐藏全部 * @return */ public static PdfPCell createCell(String value, Font font, int horizontalAlignment, int verticalAlignment, int colspan, int rowspan, int borderSide) { 
     PdfPCell cell = new PdfPCell(); cell.setPhrase(new Phrase(value, font));//存值 cell.setHorizontalAlignment(horizontalAlignment);//水平居中 if(verticalAlignment>0){ 
     cell.setUseAscender(true);//垂直居中 } cell.setVerticalAlignment(verticalAlignment);//垂直居中 if(colspan>0 ){ 
     cell.setColspan(colspan); } if(rowspan>0){ 
     cell.setRowspan(rowspan); } if(borderSide>0){ 
     cell.disableBorderSide(borderSide); } return cell; } public static void generatePDFDoc(){ 
     Document doc = new Document(PageSize.A4);//定义doc try { 
     File file = new File("C:\\Users\\cbh17\\Desktop\\test.pdf");//生成目标文件 file.createNewFile(); PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(file)); writer.setPageEvent(new Watermark("LeaSoft"));// 水印 doc.open();//open BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); //2. BaseFont.createFont("C:/WINDOWS/Fonts/simsun.ttc", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED); //3. BaseFont.createFont("/simsun.ttc", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);  Font font = new Font(bf, 10, Font.NORMAL, BaseColor.BLACK);//字体 //使用中文字体有三种方式 //1.使用itext自带的字体集包 //2.使用本地的 字体资源 // 2.1 windows下，字体资源在目录 C:/WINDOWS/Fonts，注意 ttc后缀要 加 ',1' // 2.2 linux 未尝试，不过同理，找到字体资源的绝对路径即可 //3.可以将 字体资源 放到项目 当中 Paragraph paragraph1 = new Paragraph("XXXXXXXXX", font);//段落 paragraph1.setAlignment(PdfPCell.ALIGN_CENTER); paragraph1.setLeading(14f); //行间距 //paragraph1.setIndentationLeft(12); //设置左缩进 //paragraph1.setIndentationRight(12); //设置右缩进 //paragraph1.setFirstLineIndent(24); //设置首行缩进 //paragraph1.setSpacingBefore(5f); //设置段落上空白 //paragraph1.setSpacingAfter(10f); //设置段落下空白 //itext中没有行和列的概念，只有单元格，因此在声明table时就要指定列数 //然后按table.addCell(cell)顺序添加 PdfPTable table = new PdfPTable(new float[] { 
     1f, 1.5f, 1f, 1.5f}); //表头 table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE, 0,0,15)); table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE,3,0,15)); table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE,0,0,15)); table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE,0,0,15)); table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE,0,0,15)); table.addCell(createCell("XXX", font, PdfPCell.ALIGN_LEFT, PdfPCell.ALIGN_MIDDLE,0,0,15)); //动态表格 for(int i = 0; i<6; i++){ 
     table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("v", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); } doc.add(paragraph1); doc.add(table1); }catch (Exception e){ 
     e.printStackTrace(); }finally { 
     // 5.关闭文档 if(doc!=null){ 
     doc.close(); } } } 

二、pdf模板生成pdf

1.制作pdf模板

1.1下载Adobe Acrobat DC

官网比较慢 百度网盘永久链接

2.制作

1. 使用word制作，填充完文本样式之后，转pdf
2. 使用Adobe编辑打开
   
   

点击准备表单，会自动帮你创建好表单，要是没有这个按钮，就去 更多工具 里添加

3.代码

 public static void generateTempPDF() throws Exception { 
      PdfReader reader = null; PdfStamper ps = null; OutputStream fos = null; ByteArrayOutputStream bos = null; try { 
      String fileName = "C:\\Users\\cbh17\\Desktop\\bb1.pdf";//模板绝对路径 reader = new PdfReader(fileName); bos = new ByteArrayOutputStream(); ps = new PdfStamper(reader, bos); // 使用中文字体 BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); ArrayList<BaseFont> fontList = new ArrayList<BaseFont>(); fontList.add(bf); AcroFields fields = ps.getAcroFields(); fields.setSubstitutionFonts(fontList); fillData(fields, data());//渲染 //必须要调用这个，否则文档不会生成的 ps.setFormFlattening(true); if(ps != null){ 
      ps.close(); } //生成pdf路径存放的路径 fos = new FileOutputStream("C:\\Users\\cbh17\\Desktop\\bb2.pdf"); fos.write(bos.toByteArray()); }catch (Exception e){ 
      e.printStackTrace(); }finally { 
      if(fos!=null){ 
      fos.flush(); fos.close(); } if (bos != null){ 
      bos.close(); } if(reader != null){ 
      reader.close(); } } } / * 填充模板中的数据 */ public static void fillData(AcroFields fields, Map<String, String> data) { 
      try { 
      for (String key : data.keySet()) { 
      String value = data.get(key); // 为字段赋值,注意字段名称是区分大小写的 fields.setField(key, value); } } catch (Exception e) { 
      e.printStackTrace(); } } / * 填充数据源 * 其中data存放的key值与pdf模板中的文本域值相对应 */ public static Map<String, String> data() { 
      Map<String, String> data = new HashMap<String, String>(); //key要与模板中的别名一一对应 data.put("customerName", "bb2"); data.put("houseName", "bb2"); data.put("buildArea", "2020/7"); data.put("code", "2020/7"); data.put("operateDate", "2020/7"); data.put("chargeEndDate", "2020/7"); return data; } 

 至此模板填充完毕，但是使用 pdf模板 无法制作动态的 表格，因为并不能预知有多少数据，所以别名就不知道要用多少

3.通过pdf模板制作 除了表格以外的 临时文件，然后解析临时文件再进行填充

3.1代码

private void exportOrderDetailPdf()throws Exception { 
      List<String> pdfData = analysisPDF(); List<HashMap<String, String>> tableData = data(); generateNewPDF(pdfData,tableData); } / * 解析 临时文件 * 不清楚itext 有没有获取类似 line对象的办法，保证样式不丢失，否则只能获取文本 * 这里 我是在模板中 加入了一个 table 字符串 用作表格位置的标识 */ private List<String> analysisPDF() throws Exception{ 
      String tempFilePath = "C:\\Users\\cbh17\\Desktop\\bb2.pdf";//临时文件路径 File tempFile = new File(tempFilePath); PdfReader reader = null; List<String> list = new ArrayList<String>(); FileInputStream fileInputStream = null; boolean deleteSign = true; try { 
      fileInputStream = new FileInputStream(tempFile); reader = new PdfReader(fileInputStream); int pageNum = reader.getNumberOfPages(); String pageContent = ""; for (int i = 1; i <= pageNum; i++) { 
     // 只能从第1页开始读 pageContent += PdfTextExtractor.getTextFromPage(reader, i); } String[] strArr = pageContent.split("\n"); list = Arrays.asList(strArr); }catch (Exception e){ 
      e.printStackTrace(); deleteSign = false; }finally { 
      if (reader!=null){ 
      reader.close(); } if(fileInputStream!=null){ 
      fileInputStream.close(); } if(tempFile.exists() && deleteSign){ 
      tempFile.delete(); } } return list; } / *制作假数据 */ private List<HashMap<String,String>> data(){ 
      List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>(); int x = 0; while (x < 10) { 
      HashMap<String, String> map = new HashMap<String, String>(); map.put("Key1", "Value1"); map.put("Key2", "Value2"); map.put("Key3", "Value3"); map.put("Key4", "Value4"); map.put("Key5", "Value5"); map.put("Key6", "Value6"); map.put("Key7", "Value7"); map.put("Key8", "Value8"); list.add(map); x++; } return list; } / * 生成pdf * 有两种情况 * 一种是获取 临时文件的流对象，然后对其做 增 的操作，因此后续添加的 内容只能在后边 不能插入 * 水印也会覆盖临时文件的内容， * 另一种就是 我这种，获取临时文件的文本，然后 一起生成 */ private void generateNewPDF(List<String> pdfData, List<HashMap<String, String>> tableData) throws Exception { 
      Document document = new Document(); FileOutputStream fileOutputStream = null; PdfWriter writer = null; try { 
      File file = new File("C:\\Users\\cbh17\\Desktop\\bb3.pdf"); file.createNewFile(); fileOutputStream = new FileOutputStream(file); writer = PdfWriter.getInstance(document, fileOutputStream); writer.setPageEvent(new Watermark("LeaSoft"));// 水印 document.open(); BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); Font font = new Font(bf, 10, Font.NORMAL, BaseColor.BLACK); for (String str : pdfData) { 
      if(str.equalsIgnoreCase(TABLE_SIGN)){ 
      PdfPTable table = new PdfPTable(new float[] { 
      100, 100, 100, 100, 100, 100, 100, 100 }); table.setLockedWidth(true); table.setTotalWidth(550); table.addCell(createCell("XXXXXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("XXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,3,0,0)); table.addCell(createCell("XXXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("XXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("XXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("XXXXX", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); for (HashMap<String, String> tableDatum : tableData) { 
      table.addCell(createCell(tableDatum.get("Key1"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key2"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key3"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key4"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key5"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key6"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key7"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell(tableDatum.get("Key8"), font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); } table.addCell(createCell("hhh", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,6,3,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); table.addCell(createCell("a", font, Element.ALIGN_CENTER, PdfPCell.ALIGN_MIDDLE,0,0,0)); document.add(table); }else{ 
      Paragraph paragraph = new Paragraph(str, new Font(bf, 11, Font.BOLD, BaseColor.BLACK)); paragraph.setAlignment(PdfPCell.ALIGN_LEFT); paragraph.setLeading(14f); //行间距 document.add(paragraph); } } }catch (Exception e){ 
      e.printStackTrace(); }finally { 
      if(document!=null && document.isOpen()){ 
      document.close(); } if (writer!=null && !writer.isCloseStream()){ 
      writer.close(); } if (fileOutputStream!=null){ 
      fileOutputStream.close(); } } } / * * @param value 文本 * @param font 字体 * @param horizontalAlignment 水平样式 0-left, 1-center, 2-right * @param verticalAlignment 垂直样式 4-top, 5-middle, 6-bottom; * @param colspan 列合并 * @param rowspan 行合并 * @param borderSide 外边框 * 0-默认 * 1-隐藏上边框 * 2-隐藏下边框 * 3-隐藏上、下边框 * 4-隐藏左边框 * 5-隐藏左、上边框 * 6-隐藏左、下边框 * 7-隐藏左、上、下边框 * 8-隐藏右边框 * 9-隐藏右、上边框 * 10-隐藏右、下边框 * 11-隐藏右、上、下边框 * 12-隐藏左、右边框 * 13-隐藏上、左、右边框 * 14-隐藏下、左、右边框 * 15-隐藏全部 * @return */ public static PdfPCell createCell(String value, Font font, int horizontalAlignment, int verticalAlignment, int colspan, int rowspan, int borderSide) { 
      PdfPCell cell = new PdfPCell(); cell.setPhrase(new Phrase(value, font)); cell.setHorizontalAlignment(horizontalAlignment);//水平居中 if(verticalAlignment>0){ 
      cell.setUseAscender(true);//垂直居中 } cell.setVerticalAlignment(verticalAlignment);//垂直居中 if(colspan>0 ){ 
      cell.setColspan(colspan); } if(rowspan>0){ 
      cell.setRowspan(rowspan); } if(borderSide>0){ 
      cell.disableBorderSide(borderSide); } return cell; }