Preface
There's a person (dead demand) running over to tell you, these are all output to me as a report, pdf format, so there's the following one, take notes, later useful directly come to get it. Looking online, we found that everyone is using itext.
IText is a well-known open project, a java class library for generating PDF documents. Through iText, not only PDF or rtf documents can be generated, but also XML and Html files can be transformed into PDF files.
maven dependence
<dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.10</version> </dependency> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itext-asian</artifactId> <version>5.2.0</version> </dependency>
Basic operation
itext has many functions, so let's start with the basic operations. More advanced operations, you can continue to see the following.
The basic processing steps are pseudocode as follows:
//Step 1—Create a Document. Document document = new Document(); //Step 2—Get a PdfWriter instance. PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createSamplePDF.pdf")); //Step 3—Open the Document. document.open(); //Step 4—Add content. document.add(new Paragraph("Hello World")); //Step 5—Close the Document. document.close();
1. Direct output data to pdf file
A special note here is that Chinese must specify a font, that is, BaseFont.
public class PDFReport { private final static String REPORT_PATH = "C:/air-navi-monitor/report"; private static void exportReport() { BaseFont bf; Font font = null; Font font2 = null; try { bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);//Create font font = new Font(bf, 12);//Using fonts font2 = new Font(bf, 12, Font.BOLD);//Using fonts } catch (Exception e) { e.printStackTrace(); } Document document = new Document(); try { PdfWriter.getInstance(document, new FileOutputStream("E:/2.pdf")); document.open(); Paragraph elements = new Paragraph("Flight Report of Changzhou Wujin Area 1", font2); elements.setAlignment(Paragraph.ALIGN_CENTER); document.add(elements); Image png = Image.getInstance("E:\\test.png"); png.setAlignment(Image.ALIGN_CENTER); document.add(png); document.add(new Paragraph("Task number: 20190701 Start date: 20190701", font)); document.add(new Paragraph("Task Name: Wujin District 1, Changzhou End date: 20190701", font)); document.add(new Paragraph("Average flight altitude: 100 m Average flight speed: 100 km/h", font)); document.add(new Paragraph("Task area: 1000㎡ End date: 20190701", font)); document.add(new Paragraph("Total length of flight: 1000㎡", font)); document.addCreationDate(); document.close(); } catch (Exception e) { System.out.println("file create exception"); } } /** * Generate pdf file * * @param missionReport * @return */ public static String exportReport(MissionReportTb missionReport) throws AirNaviException { String pdfPath = null; String imgPath = Shape2Image.getImgPath(missionReport.getMissionID()); // String imgPath = "E:\\test.png"; String finalReportStr = missionReport.getMissionReport(); MissionReport finalReport = JSONObject.parseObject(finalReportStr, MissionReport.class); BaseFont bf; Font font = null; Font font2 = null; try { bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);//Create font font = new Font(bf, 12);//Using fonts font2 = new Font(bf, 12, Font.BOLD);//Using fonts } catch (Exception e) { e.printStackTrace(); } Document document = new Document(); try { File dir = new File(REPORT_PATH); if (!dir.exists()) { dir.mkdirs(); } File file = new File(REPORT_PATH + File.separator + missionReport.getMissionID() + ".pdf"); if (!file.exists()) { file.createNewFile(); } PdfWriter.getInstance(document, new FileOutputStream(REPORT_PATH + File.separator + missionReport.getMissionID() + ".pdf")); document.open(); Paragraph elements = new Paragraph(missionReport.getMissionName() + "Flight report", font2); elements.setAlignment(Paragraph.ALIGN_CENTER); document.add(elements); Image png = Image.getInstance(imgPath); // https://blog.csdn.net/lingbo89/article/details/76177825 float documentWidth = document.getPageSize().getWidth() - document.leftMargin() - document.rightMargin(); float documentHeight = documentWidth / 580 * 320;//Reset width and height png.scaleAbsolute(documentWidth, documentHeight);//Reset width and height png.scalePercent(50); // Scale pictures by domain size // image.scaleToFit(signRect.getWidth(), signRect.getHeight()); png.setAlignment(Image.ALIGN_CENTER); document.add(png); document.add(new Paragraph("Task number:" + missionReport.getMissionCode() + ",Start date:" + finalReport.getStartTime(), font)); document.add(new Paragraph("Task name:" + missionReport.getMissionName() + ",Ending date:" + finalReport.getEndTime(), font)); document.add(new Paragraph("Average flight altitude:" + finalReport.getAvgFlightHeight() + "m" + ",Average flight speed:" + finalReport.getAvgFlightSpeed() + "km/h", font)); document.add(new Paragraph("Task area:" + finalReport.getMissionArea() + "㎡" + ",Total length of flight:" + finalReport.getFlightDuration() + "min", font)); document.addCreationDate(); document.close(); pdfPath = file.getAbsolutePath(); } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage()); System.out.println("file create exception"); throw new AirNaviException("generate PDF Failure:" + e.getMessage()); } return pdfPath; } public static void main(String[] args) throws AirNaviException { String report = "{\"detailMissionReport\":[{\"avgFlightHeight\":119.7,\"avgFlightSpeed\":71.1,\"endPoint\":\"113.27484,22.86843\",\"endTime\":\"2019-09-17 17:47:07\",\"flightDuration\":9,\"reportID\":1,\"startPoint\":\"113.31429,22.78240\",\"startTime\":\"2019-09-17 17:38:03\",\"statisticsTimes\":505}],\"missionReport\":{\"avgFlightHeight\":119.7,\"avgFlightSpeed\":71.1,\"endPoint\":\"113.31429,22.78240\",\"endTime\":\"2019-09-17 17:47:07\",\"flightDuration\":9,\"reportID\":1,\"startPoint\":\"113.31429,22.78240\",\"startTime\":\"2019-09-17 17:38:03\",\"statisticsTimes\":0},\"missionArea\":0.0,\"missionCode\":\"M001\",\"missionID\":\"888813ddef6646cd9bfaba5abb748a43\",\"missionName\":\"Desheng navigation point M008\",\"missionStatus\":1,\"missionType\":0,\"plannedFlightTime\":\"20190909\"}"; MissionReportTb missionReportTb = JSONObject.parseObject(report, MissionReportTb.class); exportReport(missionReportTb); } }
2. Generate pdf files from templates and export them
First you make a pdf template:
1. Make template interface with word first
2. Files are saved in pdf format
3. Open the pdf file just converted into word by Adobe Acrobat pro software. (Note: If there is no software that can be downloaded through my Baidu cloud, link: http://pan.baidu.com/s/1pL2klzt ) If you can't download it, you can go to Google.
4. Click the "Prepare Form" button on the right and select "Test. pdf" to start.
Go into the edit page, open it, it will automatically detect and name the form field, right-click the form field, click on the properties, appear the text field properties dialog box (actually no operation, generally do not need to modify anything, at least I did not modify oh). If you want to modify fill1 and other information, you can modify it.
5. After completing the above work, you can store pdf directly by "save as"
The above part is the operation of making pdf template. After the above-mentioned completion, we begin to generate pdf files by program according to pdf template. Upon java program:
public class Snippet { // Generating pdf by template public static void fillTemplate() { // Template path String templatePath = "E:/Test 3.pdf"; // Generated new file path String newPDFPath = "E:/ceshi.pdf"; PdfReader reader; FileOutputStream out; ByteArrayOutputStream bos; PdfStamper stamper; try { out = new FileOutputStream(newPDFPath);// Output stream reader = new PdfReader(templatePath);// Read pdf template bos = new ByteArrayOutputStream(); stamper = new PdfStamper(reader, bos); AcroFields form = stamper.getAcroFields(); String[] str = {"123456789", "TOP__ONE", "male", "1991-01-01", "130222111133338888", "Baoding City, Hebei Province"}; int i = 0; java.util.Iterator<String> it = form.getFields().keySet().iterator(); while (it.hasNext()) { String name = it.next().toString(); System.out.println(name); form.setField(name, str[i++]); } stamper.setFormFlattening(true);// If it's false, then the generated PDF file can be edited. Make sure it's true. stamper.close(); Document doc = new Document(); PdfCopy copy = new PdfCopy(doc, out); doc.open(); PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), 1); copy.addPage(importPage); doc.close(); } catch (IOException e) { System.out.println(1); } catch (DocumentException e) { System.out.println(2); } } public static void main(String[] args) { fillTemplate(); } }
The results are as follows.
More operations
1. Page size, page background color, margin blank, Title,Author,Subject,Keywords
Core code:
//Page size Rectangle rect = new Rectangle(PageSize.B5.rotate()); //Page background color rect.setBackgroundColor(BaseColor.ORANGE); Document doc = new Document(rect); PdfWriter writer = PdfWriter.getInstance(doc, out); //PDF version (default 1.4) writer.setPdfVersion(PdfWriter.PDF_VERSION_1_2); //document property doc.addTitle("Title@sample"); doc.addAuthor("Author@rensanning"); doc.addSubject("Subject@iText sample"); doc.addKeywords("Keywords@iText"); doc.addCreator("Creator@iText"); //Margins doc.setMargins(10, 20, 30, 40); doc.open(); doc.add(new Paragraph("Hello World"));
Output results:
2. Setting Password
Core code:
PdfWriter writer = PdfWriter.getInstance(doc, out); // Set the password to "World" writer.setEncryption("Hello".getBytes(), "World".getBytes(), PdfWriter.ALLOW_SCREENREADERS, PdfWriter.STANDARD_ENCRYPTION_128); doc.open(); doc.add(new Paragraph("Hello World"));
Output results:
3. Adding Page
Core code:
document.open(); document.add(new Paragraph("First page")); document.add(new Paragraph(Document.getVersion())); document.newPage(); writer.setPageEmpty(false); document.newPage(); document.add(new Paragraph("New page"));
4. Watermarking (background image)
//Picture watermark PdfReader reader = new PdfReader(FILE_DIR + "setWatermark.pdf"); PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "setWatermark2.pdf")); Image img = Image.getInstance("resource/watermark.jpg"); img.setAbsolutePosition(200, 400); PdfContentByte under = stamp.getUnderContent(1); under.addImage(img); //Text watermarking PdfContentByte over = stamp.getOverContent(2); over.beginText(); BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED); over.setFontAndSize(bf, 18); over.setTextMatrix(30, 30); over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE", 230, 430, 45); over.endText(); //Background map Image img2 = Image.getInstance("resource/test.jpg"); img2.setAbsolutePosition(0, 0); PdfContentByte under2 = stamp.getUnderContent(3); under2.addImage(img2); stamp.close(); reader.close();
5. Insert Chunk, Phrase, Paragraph, List
Core code
//Chunk objects: a String, a Font, and some attributes document.add(new Chunk("China")); document.add(new Chunk(" ")); Font font = new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE); Chunk id = new Chunk("chinese", font); id.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f); id.setTextRise(6); document.add(id); document.add(Chunk.NEWLINE); document.add(new Chunk("Japan")); document.add(new Chunk(" ")); Font font2 = new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE); Chunk id2 = new Chunk("japanese", font2); id2.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f); id2.setTextRise(6); id2.setUnderline(0.2f, -2f); document.add(id2); document.add(Chunk.NEWLINE); //Phrase object: a List of Chunks with leading document.newPage(); document.add(new Phrase("Phrase page")); Phrase director = new Phrase(); Chunk name = new Chunk("China"); name.setUnderline(0.2f, -2f); director.add(name); director.add(new Chunk(",")); director.add(new Chunk(" ")); director.add(new Chunk("chinese")); director.setLeading(24); document.add(director); Phrase director2 = new Phrase(); Chunk name2 = new Chunk("Japan"); name2.setUnderline(0.2f, -2f); director2.add(name2); director2.add(new Chunk(",")); director2.add(new Chunk(" ")); director2.add(new Chunk("japanese")); director2.setLeading(24); document.add(director2); //Paragraph object: a Phrase with extra properties and a newline document.newPage(); document.add(new Paragraph("Paragraph page")); Paragraph info = new Paragraph(); info.add(new Chunk("China ")); info.add(new Chunk("chinese")); info.add(Chunk.NEWLINE); info.add(new Phrase("Japan ")); info.add(new Phrase("japanese")); document.add(info); //List object: a sequence of Paragraphs called ListItem document.newPage(); List list = new List(List.ORDERED); for (int i = 0; i < 10; i++) { ListItem item = new ListItem(String.format("%s: %d movies", "country" + (i + 1), (i + 1) * 100), new Font( Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE)); List movielist = new List(List.ORDERED, List.ALPHABETICAL); movielist.setLowercase(List.LOWERCASE); for (int j = 0; j < 5; j++) { ListItem movieitem = new ListItem("Title" + (j + 1)); List directorlist = new List(List.UNORDERED); for (int k = 0; k < 3; k++) { directorlist.add(String.format("%s, %s", "Name1" + (k + 1), "Name2" + (k + 1))); } movieitem.add(directorlist); movielist.add(movieitem); } item.add(movielist); list.add(item); } document.add(list);
6. Insert tables
PdfPTable table = new PdfPTable(3); PdfPCell cell; cell = new PdfPCell(new Phrase("Cell with colspan 3")); cell.setColspan(3); table.addCell(cell); cell = new PdfPCell(new Phrase("Cell with rowspan 2")); cell.setRowspan(2); table.addCell(cell); table.addCell("row 1; cell 1"); table.addCell("row 1; cell 2"); table.addCell("row 2; cell 1"); table.addCell("row 2; cell 2"); document.add(table);
7. Form nesting
PdfPTable table = new PdfPTable(4); //1 rows and 2 columns PdfPTable nested1 = new PdfPTable(2); nested1.addCell("1.1"); nested1.addCell("1.2"); //2 rows and 1 columns PdfPTable nested2 = new PdfPTable(1); nested2.addCell("2.1"); nested2.addCell("2.2"); //Insert the table into the specified location for (int k = 0; k < 24; ++k) { if (k == 1) { table.addCell(nested1); } else if (k == 20) { table.addCell(nested2); } else { table.addCell("cell " + k); } } document.add(table);
8. Setting Table Header
String[] bogusData = { "M0065920", "SL", "FR86000P", "PCGOLD", "119000", "96 06", "2001-08-13", "4350", "6011648299", "FLFLMTGP", "153", "119000.00" }; int NumColumns = 12; // 12 PdfPTable datatable = new PdfPTable(NumColumns); int headerwidths[] = { 9, 4, 8, 10, 8, 11, 9, 7, 9, 10, 4, 10 }; // percentage datatable.setWidths(headerwidths); datatable.setWidthPercentage(100); datatable.getDefaultCell().setPadding(3); datatable.getDefaultCell().setBorderWidth(2); datatable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); datatable.addCell("Clock #"); datatable.addCell("Trans Type"); datatable.addCell("Cusip"); datatable.addCell("Long Name"); datatable.addCell("Quantity"); datatable.addCell("Fraction Price"); datatable.addCell("Settle Date"); datatable.addCell("Portfolio"); datatable.addCell("ADP Number"); datatable.addCell("Account ID"); datatable.addCell("Reg Rep ID"); datatable.addCell("Amt To Go "); datatable.setHeaderRows(1); //Frame datatable.getDefaultCell().setBorderWidth(1); //Background color for (int i = 1; i < 1000; i++) { for (int x = 0; x < NumColumns; x++) { datatable.addCell(bogusData[x]); } } document.add(datatable);
Limited space, if you need more operation, you can refer to the article:
https://www.cnblogs.com/liaojie970/p/7132475.html
Last
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