总结之lowagie.text合并PDF文件

我就是我 2022-12-01 14:24 218阅读 0赞

通过itext合并PDF

#### 引入依赖 ####

<dependency>
    <groupId>com.lowagie.text</groupId>
    	<artifactId>com.springsource.com.lowagie.text</artifactId>
    	<version>${com.lowagie.text.version}</version>
    </dependency>

#### 工具类 ####

public class MergePDFUtil {
    
        public static void main(String[] args) {
            //String[] files = {"d:\\HT_15965121390002824.pdf", "d:\\HT_159609896500035153.pdf", "d:\\HT_159609993800046541.pdf"};
            String savepath = "d:\\temp.pdf";
            String[] files = new String[1];
            files[0] = "d:\\test1.pdf";
            mergePdfFiles(files, savepath);
        } /*
         * * 合並pdf文件 * * @param files 要合並文件數組(絕對路徑如{ "e:\\1.pdf", "e:\\2.pdf" ,
         * "e:\\3.pdf"}) * @param newfile
         * 合並後新產生的文件絕對路徑如e:\\temp.pdf,請自己刪除用過後不再用的文件請 * @return boolean
         * 產生成功返回true, 否則返回false
         */
    
        public static boolean mergePdfFiles(String[] files, String newfile) {
            boolean retValue = false;
            Document document = null;
            try {
                document = new Document(new PdfReader(files[0]).getPageSize(1));
                PdfCopy copy = new PdfCopy(document, new FileOutputStream(newfile));
                document.open();
                for (int i = 0; i < files.length; i++) {
                    PdfReader reader = new PdfReader(files[i]);
                    int n = reader.getNumberOfPages();
                    for (int j = 1; j <= n; j++) {
                        document.newPage();
                        PdfImportedPage page = copy.getImportedPage(reader, j);
                        copy.addPage(page);
                    }
                }
                retValue = true;
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                document.close();
            }
            return retValue;
        }
    }