| commit | author | age | ||
| d73443 | 1 | package vip.xiaonuo.modular.blogarticle; |
| I | 2 | |
| 3 | import com.itextpdf.text.Document; | |
| 4 | import com.itextpdf.text.DocumentException; | |
| 5 | import com.itextpdf.text.pdf.PdfCopy; | |
| 6 | import com.itextpdf.text.pdf.PdfImportedPage; | |
| 7 | import com.itextpdf.text.pdf.PdfReader; | |
| 8 | ||
| 9 | import java.io.FileOutputStream; | |
| 10 | import java.io.IOException; | |
| 11 | import java.util.List; | |
| 12 | ||
| 13 | /** | |
| 14 | * pdf 切割合并demo | |
| 15 | */ | |
| 16 | public class PdfUtils { | |
| 17 | ||
| 18 | public static void main(String args[]) throws IOException, DocumentException { | |
| 19 | try { | |
| 20 | //抽取页面 | |
| 21 | ||
| 22 | splitPDF("D:\\inleft\\Redis开发与运维(付磊).pdf", "D:\\inleft\\redis-split-1.pdf", | |
| 23 | 28, 59); | |
| 24 | ||
| 25 | // splitPDF("D:\\桌面\\翻译任务\\IEC-61158-2-2003.pdf", "D:\\桌面\\翻译任务\\output1.pdf", | |
| 26 | // 231, 243); | |
| 27 | // splitPDF("D:\\桌面\\翻译任务\\IEC-61158-2-2003.pdf", "D:\\桌面\\翻译任务\\output2.pdf", | |
| 28 | // 260, 261); | |
| 29 | // //合并页面 | |
| 30 | // String[] files = {"C:\\Users\\Administrator\\Desktop\\毕业设计.pdf", "C:\\Users\\Administrator\\Desktop\\毕业论文中期检查表.pdf"}; | |
| 31 | // String savepath = "C:\\Users\\Administrator\\Desktop\\K.pdf"; | |
| 32 | // mergePdfFiles(Arrays.asList(files), savepath); | |
| 33 | } catch (Exception e) { | |
| 34 | e.printStackTrace(); | |
| 35 | } | |
| 36 | ||
| 37 | } | |
| 38 | ||
| 39 | /** | |
| 40 | * 合并原pdf为新文件 | |
| 41 | * | |
| 42 | * @param files pdf绝对路径集 | |
| 43 | * @param newfile 新pdf绝对路径 | |
| 44 | * @return | |
| 45 | * @throws IOException | |
| 46 | * @throws DocumentException | |
| 47 | */ | |
| 48 | public static void mergePdfFiles(List<String> files, String newfile) throws IOException, DocumentException { | |
| 49 | Document document = new Document(new PdfReader(files.get(0)).getPageSize(1)); | |
| 50 | PdfCopy copy = new PdfCopy(document, new FileOutputStream(newfile)); | |
| 51 | document.open(); | |
| 52 | for (int i = 0; i < files.size(); i++) { | |
| 53 | PdfReader reader = new PdfReader(files.get(i)); | |
| 54 | int n = reader.getNumberOfPages(); | |
| 55 | for (int j = 1; j <= n; j++) { | |
| 56 | document.newPage(); | |
| 57 | PdfImportedPage page = copy.getImportedPage(reader, j); | |
| 58 | copy.addPage(page); | |
| 59 | } | |
| 60 | } | |
| 61 | document.close(); | |
| 62 | } | |
| 63 | ||
| 64 | public static void splitPDF(String bytes, String newFile, int start, int end) { | |
| 65 | Document document = null; | |
| 66 | PdfCopy copy = null; | |
| 67 | try { | |
| 68 | //源读取 | |
| 69 | PdfReader reader = new PdfReader(bytes); | |
| 70 | //获取pdf页数 | |
| 71 | int n = reader.getNumberOfPages(); | |
| 72 | if (end == 0) { | |
| 73 | end = n; | |
| 74 | } | |
| 75 | ||
| 76 | document = new Document(reader.getPageSize(1));//读取源第一页 | |
| 77 | copy = new PdfCopy(document, new FileOutputStream(newFile));//输出pdf初始化 | |
| 78 | ||
| 79 | document.open(); | |
| 80 | for (int j = start; j <= end; j++) { | |
| 81 | document.newPage(); | |
| 82 | PdfImportedPage page = copy.getImportedPage(reader, j);//翻页到初始页 | |
| 83 | copy.addPage(page);//输出文件追加内容 | |
| 84 | } | |
| 85 | document.close(); | |
| 86 | } catch (Exception e) { | |
| 87 | e.printStackTrace(); | |
| 88 | System.err.println("split pdf file error:" + e.getMessage()); | |
| 89 | } | |
| 90 | } | |
| 91 | ||
| 92 | } | |
