见标题

以下是使用pdfbox提取pdf的文字，现在想提取pdf里面的印章，有朋友在线帮忙么

import org.apache.pdfbox.pdmodel.PDDocument;

import org.apache.pdfbox.pdmodel.PDDocumentCatalog;

import org.apache.pdfbox.text.PDFTextStripper;

import java.io.File;

import java.io.IOException;

public class Test {

public static void main(String[] args) {

File pdfFile = new File(“D:\\test.pdf”);

PDDocument document = null;

try {

document = PDDocument.load(pdfFile);

// 获取页码

int pages = document.getNumberOfPages();

// 读文本内容

PDFTextStripper stripper = new PDFTextStripper();

// 设置按顺序输出

stripper.setSortByPosition(true);

stripper.setStartPage(1);

stripper.setEndPage(pages);

PDDocumentCatalog cata = document.getDocumentCatalog();

String content = stripper.getText(document);

System.out.println(content);

} catch (IOException e) {

e.printStackTrace();

}

}

}

提取图片见代码：一般的图片可以提取，唯独pdf中是印章的时候提取不了

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import org.apache.pdfbox.pdmodel.PDDocument;

import org.apache.pdfbox.pdmodel.PDDocumentCatalog;

import org.apache.pdfbox.pdmodel.PDDocumentInformation;

import org.apache.pdfbox.pdmodel.PDPage;

import org.apache.pdfbox.pdmodel.PDResources;

import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;

import org.apache.pdfbox.util.PDFTextStripper;

/**

* 使用 pdfbox 解析pdf 文档信息

*

* @author diaodiaofly

*/

public class PDFParse {

public static final String DATE_FORMAT = “yyyy-MM-dd HH:mm:ss”;

/**

* 解析pdf文档信息

*

* @param pdfPath pdf文档路径

* @throws Exception

*/

public static void pdfParse(String pdfPath, String imgSavePath) throws Exception {

InputStream input = null;

File pdfFile = new File(pdfPath);

PDDocument document = null;

try {

input = new FileInputStream(pdfFile);

//加载 pdf 文档

document = PDDocument.load(input);

/** 文档属性信息 **/

PDDocumentInformation info = document.getDocumentInformation();

System.out.println(“标题:” + info.getTitle());

System.out.println(“主题:” + info.getSubject());

System.out.println(“作者:” + info.getAuthor());

System.out.println(“关键字:” + info.getKeywords());

System.out.println(“应用程序:” + info.getCreator());

System.out.println(“pdf 制作程序:” + info.getProducer());

System.out.println(“作者:” + info.getTrapped());

System.out.println(“创建时间:” + dateFormat(info.getCreationDate()));

System.out.println(“修改时间:” + dateFormat(info.getModificationDate()));

//获取内容信息

PDFTextStripper pts = new PDFTextStripper();

String content = pts.getText(document);

System.out.println(“内容:” + content);

/** 文档页面信息 **/

PDDocumentCatalog cata = document.getDocumentCatalog();

List pages = cata.getAllPages();

System.out.println(pages.size());

int count = 1;

for (int i = 0; i < pages.size(); i++) {

PDPage page = (PDPage) pages.get(i);

if (null != page) {

PDResources res = page.findResources();

//获取页面图片信息

Map imgs = res.getImages();

System.out.println(imgs);

if (null != imgs) {

Set keySet = imgs.keySet();

Iterator it = keySet.iterator();

while (it.hasNext()) {

Object obj = it.next();

PDXObjectImage img = (PDXObjectImage) imgs.get(obj);

img.write2file(imgSavePath + count);

count++;

}

}

}

}

} catch (Exception e) {

throw e;

} finally {

if (null != input)

input.close();

if (null != document)

document.close();

}

}

/**

* 获取格式化后的时间信息

*

* @param dar 时间信息

* @return

* @throws Exception

*/

public static String dateFormat(Calendar calendar) throws Exception {

if (null == calendar)

return null;

String date = null;

try {

String pattern = DATE_FORMAT;

SimpleDateFormat format = new SimpleDateFormat(pattern);

date = format.format(calendar.getTime());

} catch (Exception e) {

throw e;

}

return date == null ? “” : date;

}

public static void main(String[] args) throws Exception {

pdfParse(“D:/test.pdf”, “D:/img/”);

}

}