java完整的利用itext7制作pdf、二维码图片插入pdf，并解析pdf中的二维码信息
利用itext7、zxing、QRCore制作pdf、二维码图片插入pdf，并解析pdf中的二维码信息，手机可以实现扫描获取二维码的信息，并进行验证你的解析是否正确。
先是生成二维码图片并插入pdf中
package com.parseImage;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import java.io.FileOutputStream;
import java.io.IOException;
public class CreateBarcodePdf {
public static void main(String... args) throws IOException, DocumentException {
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new
//pdf输出地址
FileOutputStream("./src/test/resources/scanner.pdf"));
document.open();
PdfContentByte cb = writer.getDirectContent();
BarcodeQRCode barcodeQRCode = new BarcodeQRCode("http://memorynotfound.com", 1000, 1000, null);
Image codeQrImage = barcodeQRCode.getImage();
codeQrImage.scaleAbsolute(100, 100);
document.add(codeQrImage);
document.close();
}
}效果图 
抽取pdf中二维码图片
package com.parseImage;
import java.io.IOException;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.PdfReaderContentParser;
/**
* Extracts images from a PDF file.
*/
public class ExtractImages {
/**
* PDF to extract images from
*/
//pdf路径
public static final String SOURCE_PDF = "./src/test/resources/scanner.pdf";
/**
* Parses a PDF and extracts all the images.
*
* @param filename the source PDF
* @param destination the directory to save images
*/
public void extractImages(String filename, String destination)
throws IOException, DocumentException {
System.out.println("Processing PDF at " + filename);
System.out.println("Saving images to " + destination);
PdfReader reader = new PdfReader(filename);
PdfReaderContentParser parser = new PdfReaderContentParser(reader);
ImageRenderListener listener = new ImageRenderListener(destination + "/Img");
for (int i = 1; i <= reader.getNumberOfPages(); i++) {
parser.processContent(i, listener);
}
reader.close();
}
/**
* Main method.
*
* @param args no arguments needed
* @throws DocumentException
* @throws IOException
*/
public static void main(String[] args) throws IOException, DocumentException {
String sourcePDF = SOURCE_PDF;//读取图片地址
String destination = "target";//图片输出地址
if (args.length > 0) {
sourcePDF = args[0];
if (args.length > 1) {
destination = args[1];
}
}
new ExtractImages().extractImages(sourcePDF, destination);
}
}效果图 
识别二维码图片中的二维码信息
package com.parseImage.parse;
import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import javax.imageio.ImageIO;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.parseImage.BufferedImageLuminanceSource;
public class ParseImage {
public static void main(String[] args) throws NotFoundException, IOException {
String decode = decode("./target/Img-1.png");//识别图片路径
System.out.println(decode)//输出到控制台
}
public static String decode(String filepath) throws IOException, NotFoundException {
BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filepath));
LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
Binarizer binarizer = new HybridBinarizer(source);
BinaryBitmap bitmap = new BinaryBitmap(binarizer);
HashMap decodeHints = new HashMap();
decodeHints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
Result result = new MultiFormatReader().decode(bitmap, decodeHints);
return result.getText();
}
}
**控制台信息解析二维码信息** 
手机扫描二维码信息 
由于官方版本更新过快导致有些类已经改变或者丢失，需要添加自己写的必不可少的两个辅助类。
图片监听
package com.parseImage;
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.pdf.PRStream;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.parser.ImageRenderInfo;
import com.itextpdf.text.pdf.parser.PdfImageObject;
import com.itextpdf.text.pdf.parser.RenderListener;
import com.itextpdf.text.pdf.parser.TextRenderInfo;
public class ImageRenderListener implements RenderListener
{
final String name;
int counter = 100000;
public ImageRenderListener(String name)
{
this.name = name;
}
public void beginTextBlock() { }
public void renderText(TextRenderInfo renderInfo) { }
public void endTextBlock() { }
public void renderImage(ImageRenderInfo renderInfo)
{
try
{
PdfImageObject image = renderInfo.getImage();
if (image == null) return;
int number = renderInfo.getRef() != null ? renderInfo.getRef().getNumber() : counter++;
String filename = String.format("%s-%s.%s", name, number, image.getFileType());
FileOutputStream os = new FileOutputStream(filename);
os.write(image.getImageAsBytes());
os.flush();
os.close();
PdfDictionary imageDictionary = image.getDictionary();
PRStream maskStream = (PRStream) imageDictionary.getAsStream(PdfName.SMASK);
if (maskStream != null)
{
PdfImageObject maskImage = new PdfImageObject(maskStream);
filename = String.format("%s-%s-mask.%s", name, number, maskImage.getFileType());
os = new FileOutputStream(filename);
os.write(maskImage.getImageAsBytes());
os.flush();
os.close();
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
buffer图片资源
package com.parseImage;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import com.google.zxing.LuminanceSource;
public class BufferedImageLuminanceSource extends LuminanceSource {
private final BufferedImage image;
private final int left;
private final int top;
public BufferedImageLuminanceSource(BufferedImage image) {
this(image, 0, 0, image.getWidth(), image.getHeight());
}
public BufferedImageLuminanceSource(BufferedImage image, int left,
int top, int width, int height) {
super(width, height);
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
if (left + width > sourceWidth || top + height > sourceHeight) {
throw new IllegalArgumentException(
"Crop rectangle does not fit within image data.");
}
for (int y = top; y < top + height; y++) {
for (int x = left; x < left + width; x++) {
if ((image.getRGB(x, y) & 0xFF000000) == 0) {
image.setRGB(x, y, 0xFFFFFFFF); // = white
}
}
}
this.image = new BufferedImage(sourceWidth, sourceHeight,
BufferedImage.TYPE_BYTE_GRAY);
this.image.getGraphics().drawImage(image, 0, 0, null);
this.left = left;
this.top = top;
}
public byte[] getRow(int y, byte[] row) {
if (y < 0 || y >= getHeight()) {
throw new IllegalArgumentException(
"Requested row is outside the image: " + y);
}
int width = getWidth();
if (row == null || row.length < width) {
row = new byte[width];
}
image.getRaster().getDataElements(left, top + y, width, 1, row);
return row;
}
public byte[] getMatrix() {
int width = getWidth();
int height = getHeight();
int area = width * height;
byte[] matrix = new byte[area];
image.getRaster().getDataElements(left, top, width, height, matrix);
return matrix;
}
public boolean isCropSupported() {
return true;
}
public LuminanceSource crop(int left, int top, int width, int height) {
return new BufferedImageLuminanceSource(image, this.left + left,
this.top + top, width, height);
}
public boolean isRotateSupported() {
return true;
}
public LuminanceSource rotateCounterClockwise() {
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0,
0.0, 0.0, sourceWidth);
BufferedImage rotatedImage = new BufferedImage(sourceHeight,
sourceWidth, BufferedImage.TYPE_BYTE_GRAY);
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();
int width = getWidth();
return new BufferedImageLuminanceSource(rotatedImage, top,
sourceWidth - (left + width), getHeight(), width);
}
}
pom.xml
请完整的参考我的jar和版本（尤其是版本，因为不同的版本，类可能有改变或者缺失）
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>com.itext.parse.imagegroupId>
<artifactId>parseImageartifactId>
<version>0.0.1-SNAPSHOTversion>
<packaging>warpackaging>
<dependencies>
<dependency>
<groupId>com.itextpdfgroupId>
<artifactId>itextpdfartifactId>
<version>5.1.3version>
<type>jartype>
dependency>
<dependency>
<groupId>com.google.zxinggroupId>
<artifactId>coreartifactId>
<version>2.3.0version>
dependency>
<dependency>
<groupId>commons-langgroupId>
<artifactId>commons-langartifactId>
<version>2.6version>
dependency>
<dependency>
<groupId>org.apache.pdfboxgroupId>
<artifactId>pdfboxartifactId>
<version>2.0.7version>
dependency>
dependencies>
project>附上我的源码连接
http://download.csdn.net/download/qq_36832411/9971701
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