java生成pdf

Posted 2020-12-21 ideaai

java创建pdf

CreatePDF

PageXofYTest

ZIPUtil

Meavn

<!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.13</version>
</dependency>

Gradle

// https://mvnrepository.com/artifact/com.itextpdf/itextpdf
compile group: ‘com.itextpdf‘, name: ‘itextpdf‘, version: ‘5.5.13‘

CreatePDF

package PDFUtil;

import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import com.itextpdf.text.pdf.draw.DottedLineSeparator;

import java.io.File;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

public class CreatePDF {
    public static void main(String[] args) throws Exception {
        createPdfAdd1("12345667");
    }

    /**
     * 创建pdf
     * @param examjson
     * @return
     */
    public static String createPdfAdd1(String examjson){
        //Map<String, Object> exam = JSONObject.parseObject(examjson, new TypeReference<Map<String, Object>>() { });
        String pathimg = "C:\Users\idea\Pictures";
        String path  = "D:\photos";
        Integer paperid = 1;
        String examPath = "";
        try{
            //创建文件
            Document document = new Document();
            //设置字体
            BaseFont bfChinese = BaseFont.createFont();
            //文件路径
            examPath = path;
            File files = new File(examPath);
            if(! files.exists() && !files.isDirectory()) {					//判断目录是否存在
                files.mkdir();
            }
            //创建PDF
            PdfWriter writer =  PdfWriter.getInstance(document, new FileOutputStream(examPath+"/test.pdf"));
            // 设置页面布局
            writer.setViewerPreferences(PdfWriter.PageLayoutOneColumn);
            // 页码
            writer.setPageEvent(new PageXofYTest());
            //打开文件
            document.open();
            //图片1
            Image image1 = Image.getInstance(pathimg+"/1.jpg");
            //设置图片的宽度和高度
            //image1.scaleAbsolute(140, 40);
            //将图片1添加到pdf文件中
            document.add(image1);
            //标题
            Paragraph paragraph = new Paragraph(150);//段落的间距
            //1 2 3  中右左
            paragraph.setAlignment(1);  //对齐方式
            Font font = new Font(bfChinese);//字体
            font.setSize(40);//字体大小
            paragraph.setFont(font);//设置段落字体
            Chunk chunk = new Chunk("Test");
            paragraph.add(chunk);
            document.add(paragraph);

            Paragraph paragraph1 = new Paragraph(40);
            //1 2 3  中右左
            paragraph1.setAlignment(1);  //对齐方式
            Font font1 = new Font(bfChinese);//字体
            font1.setSize(20);
            paragraph1.setFont(font1);
            Chunk chunk1 = new Chunk("Test1");
            paragraph1.add(chunk1);
            //paragraph1.setSpacingBefore(-15);
            //paragraph1.setSpacingAfter(-50);//往下距离200
            document.add(paragraph1);

            //点线
            DottedLineSeparator line = new DottedLineSeparator();
            //下移5个单位
            line.setOffset(-15);
            //设置点之间的距离
            //line.setGap(20);
            document.add(line);

            Paragraph paragraph3 = new Paragraph(150);
            //1 2 3  中右左
            paragraph3.setAlignment(1);  //对齐方式
            Font font3 = new Font(bfChinese);//字体
            font3.setSize(12);
            paragraph3.setFont(font3);
            Chunk chunk3 = new Chunk("编号："+getRandom(17));
            paragraph3.add(chunk3);
            paragraph3.setSpacingAfter(5);
            document.add(paragraph3);

            Paragraph paragraph4 = new Paragraph(15);
            //1 2 3  中右左
            paragraph4.setAlignment(1);  //对齐方式
            Font font4 = new Font(bfChinese);//字体
            font4.setSize(12);
            paragraph4.setFont(font4);
            SimpleDateFormat df = new SimpleDateFormat("yyyy年MM月dd日");
            Chunk chunk4 = new Chunk("文档生成日期："+df.format(System.currentTimeMillis()));
            paragraph4.add(chunk4);
            paragraph4.setSpacingAfter(5);
            document.add(paragraph4);

            document.newPage(); //换页

            Paragraph answerPar = new Paragraph(20);				//标准答案
            answerPar.setAlignment(3);  //对齐方式
            Font answerfont = new Font(bfChinese);//字体
            answerfont.setSize(12);
            answerPar.setFont(answerfont);
            Chunk answerchunk = new Chunk(examjson);
            answerPar.add(answerchunk);
            answerPar.setSpacingAfter(5);
            document.add(answerPar);
            //关闭文档
            document.close();
            //关闭书写器
            writer.close();
        }catch(Exception e){
            e.printStackTrace();
        }

//        ZIPUtil.compress(examPath,path+"/exam-"+paperid+".zip" );		//压缩
        System.out.println("完成");
        return "ok";
    }

    /**
     * 生成指定位数的随机数
     * @param length
     * @return
     */
    public static String getRandom(int length){
        String val = "";
        Random random = new Random();
        for (int i = 0; i < length; i++) {
            val += String.valueOf(random.nextInt(10));
        }
        return val;
    }


    /**
     * 抠模板
     * @throws Exception
     */
    /*public static void createAllPdf() throws Exception {
        //填充创建pdf
        PdfReader reader = null;
        PdfStamper stamp = null;
        try {
            reader = new PdfReader("E:/module.pdf");
            SimpleDateFormat simp = new SimpleDateFormat("yyyy-MM-dd");
            String times = simp.format(new Date()).trim();
            //创建生成报告名称
            String root = "D:photos/";
            if (!new File(root).exists())
                new File(root).mkdirs();
            File deskFile = new File(root, times + ".pdf");
            stamp = new PdfStamper(reader, new FileOutputStream(deskFile));
            //取出报表模板中的所有字段
            AcroFields form = stamp.getAcroFields();
            // 填充数据
            form.setField("name", "zhangsan");
            form.setField("sex", "男");
            form.setField("age", "15");

            //报告生成日期
            SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd");
            String generationdate = dateformat.format(new Date());
            form.setField("generationdate", generationdate);
            stamp.setFormFlattening(true);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (stamp != null) {
                stamp.close();
            }
            if (reader != null) {
                reader.close();
            }
        }
    }*/
}

PageXofYTest

package PDFUtil;

import com.itextpdf.text.Document;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.pdf.*;

import java.io.File;

//页码事件
    public  class PageXofYTest extends PdfPageEventHelper {
        public PdfTemplate total;

        public BaseFont bfChinese;

        /**
         * 重写PdfPageEventHelper中的onOpenDocument方法
         */
        @Override
        public void onOpenDocument(PdfWriter writer, Document document) {
            // 得到文档的内容并为该内容新建一个模板
            total = writer.getDirectContent().createTemplate(500, 500);
            try {

                String prefixFont = "";
                String os = System.getProperties().getProperty("os.name");
                if(os.startsWith("win") || os.startsWith("Win")){
                    prefixFont = "C:\Windows\Fonts" + File.separator;
                }else {
                    prefixFont = "/usr/share/fonts/chinese" + File.separator;
                }

                // 设置字体对象为Windows系统默认的字体
                //bfChinese = BaseFont.createFont(prefixFont + "simsun.ttc,0", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
                bfChinese = BaseFont.createFont();
            } catch (Exception e) {
                throw new ExceptionConverter(e);
            }
        }

        /**
         * 重写PdfPageEventHelper中的onEndPage方法
         */
        @Override
        public void onEndPage(PdfWriter writer, Document document) {
            // 新建获得用户页面文本和图片内容位置的对象
            PdfContentByte pdfContentByte = writer.getDirectContent();
            // 保存图形状态
            pdfContentByte.saveState();
            String text ="www.rkpass.cn   "+ writer.getPageNumber();
            // 获取点字符串的宽度
            float textSize = bfChinese.getWidthPoint(text, 15);
            pdfContentByte.beginText();
            // 设置随后的文本内容写作的字体和字号
            pdfContentByte.setFontAndSize(bfChinese, 15);

            // 定位‘X/‘
            //System.out.println(document.right() +"...."+ document.left());
           // float x = (document.right() + document.left())/2;
            float x = (document.right()-150f);
            float y = 20f;
            pdfContentByte.setTextMatrix(x, y);
            pdfContentByte.showText(text);
            pdfContentByte.endText();

            // 将模板加入到内容（content）中- // 定位‘Y‘
            pdfContentByte.addTemplate(total, x + textSize, y);

            pdfContentByte.restoreState();
        }

        /**
         * 重写PdfPageEventHelper中的onCloseDocument方法
         */
       /* @Override
        public void onCloseDocument(PdfWriter writer, Document document) {
            total.beginText();
            try {
                String prefixFont = "";
                String os = System.getProperties().getProperty("os.name");
                if(os.startsWith("win") || os.startsWith("Win")){
                    prefixFont = "C:\Windows\Fonts" + File.separator;
                }else {
                    prefixFont = "/usr/share/fonts/chinese" + File.separator;
                }

                bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                total.setFontAndSize(bfChinese, 15);
            } catch (DocumentException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            total.setTextMatrix(0, 0);
            // 设置总页数的值到模板上，并应用到每个界面
            total.showText(String.valueOf(writer.getPageNumber() - 1));
            total.endText();
        }*/
    }

ZIPUtil

package PDFUtil;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;



public class ZIPUtil {
//	private static Logger logger = LoggerFactory.getLogger(ZIPUtil.class);
	 /**s
     * 压缩文件
     * @param srcFilePath 压缩源路径
     * @param destFilePath 压缩目的路径
     */
    public static void compress(String srcFilePath, String destFilePath) {
        //
        File src = new File(srcFilePath);
 
        if (!src.exists()) {
            throw new RuntimeException(srcFilePath + "不存在");
        }
        File zipFile = new File(destFilePath);
 
        try {
 
            FileOutputStream fos = new FileOutputStream(zipFile);
            ZipOutputStream zos = new ZipOutputStream(fos);
            String baseDir = "";
            compressbyType(src, zos, baseDir);
            zos.close();
 
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
 
        }
    }
    /**
     * 按照原路径的类型就行压缩。文件路径直接把文件压缩，
     * @param src
     * @param zos
     * @param baseDir
     */
     private static void compressbyType(File src, ZipOutputStream zos,String baseDir) {
 
            if (!src.exists())
                return;
//            logger.info("压缩路径" + baseDir + src.getName());
            //判断文件是否是文件，如果是文件调用compressFile方法,如果是路径，则调用compressDir方法；
            if (src.isFile()) {
                //src是文件，调用此方法
                compressFile(src, zos, baseDir);
                 
            } else if (src.isDirectory()) {
                //src是文件夹，调用此方法
                compressDir(src, zos, baseDir);
 
            }
 
        }
     /**
      * 压缩文件
     */
     private static void compressFile(File file, ZipOutputStream zos,String baseDir) {
         if (!file.exists())
             return;
         try {
             BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
             ZipEntry entry = new ZipEntry(baseDir + file.getName());
             zos.putNextEntry(entry);
             int count;
             byte[] buf = new byte[1024];
             while ((count = bis.read(buf)) != -1) {
                 zos.write(buf, 0, count);
             }
             bis.close();

         } catch (Exception e) {
           // TODO: handle exception

         }
     }
      
     /**
      * 压缩文件夹
      */
     private static void compressDir(File dir, ZipOutputStream zos,String baseDir) {
         if (!dir.exists())
             return;
         File[] files = dir.listFiles();
         if(files.length == 0){
             try {
                 zos.putNextEntry(new ZipEntry(baseDir + dir.getName()+File.separator));
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
         for (File file : files) {
             compressbyType(file, zos, baseDir + dir.getName() + File.separator);
         }
     }

}