一 简介
由于不同PDF合同有不同的条文,故需要拼接多个PDF
二 项目依赖
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.4.2</version>
</dependency>
三 测试代码
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
/**
* @author yinxinyao
* @date 2019/5/21 15:06
*/
public class MergePdfTest {
public static void main(String[] args) throws IOException, DocumentException {
String[] files = {"C:\\Users\\yinxinyao\\Desktop\\part2.pdf", "C:\\Users\\yinxinyao\\Desktop\\part3.pdf"};
String savepath = "C:\\Users\\yinxinyao\\Desktop\\final.pdf";
mergePdfFiles(Arrays.asList(files), savepath);
}
/**
* 合并原pdf为新文件
*
* @param files pdf绝对路径集
* @param newfile 新pdf绝对路径
* @return
* @throws IOException
* @throws DocumentException
*/
public static void mergePdfFiles(List<String> files, String newfile) throws IOException, DocumentException {
Document document = new Document(new PdfReader(files.get(0)).getPageSize(1));
PdfCopy copy = new PdfCopy(document, new FileOutputStream(newfile));
document.open();
for (int i = 0; i < files.size(); i++) {
PdfReader reader = new PdfReader(files.get(i));
int n = reader.getNumberOfPages();
for (int j = 1; j <= n; j++) {
document.newPage();
PdfImportedPage page = copy.getImportedPage(reader, j);
copy.addPage(page);
}
}
document.close();
}
}
