因為要公司業務中有個要做個用手機掃描書本上二維碼的功能，我要做一個給出版社提供一個可以生成不同尺寸和顏色的二維碼功能

   先上效果圖

   先選擇顏色前端頁面程式碼我就不展示了

   生成效果圖

引入jar

<dependency>
	<groupId>com.google.zxing</groupId>
	<artifactId>javase</artifactId>
	<version>3.2.0</version>
</dependency>

工具類程式碼如下

package com.gzxtjy.resources.util;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
/**
 * @version 1.0 2014-05-04
 * @author hjn
 *
 */
public class TwoDimensionCodeUtil {
	/*背景色,預設黑色*/
	private static  int foreColor = 0xFF000000;
	/*前景色，預設白色*/
	private static  int backColor = 0xFFFFFFFF;

	public static BufferedImage toBufferedImage(BitMatrix matrix) {
		int width = matrix.getWidth();
		int height = matrix.getHeight();
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				image.setRGB(x, y, matrix.get(x, y) ? foreColor : backColor);
			}
		}
		TwoDimensionCodeUtil.foreColor = 0xFF000000;
		TwoDimensionCodeUtil.backColor = 0xFFFFFFFF;
		return image;
	}
	

	public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, file)) {
			throw new IOException("Could not write an image of format " + format + " to " + file);
		}
	}

	public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, stream)) {
			throw new IOException("Could not write an image of format " + format);
		}
	}
/**
 * 
 * @param content內容
 * @param desPath目標圖片路徑
 * @param width長
 * @param height寬
 * @return
 */
	@SuppressWarnings("unchecked")
	public static boolean stringToImage(String content, String desPath, int width, int height) {
		try {
			MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
			@SuppressWarnings("rawtypes")
			Hashtable hints = new Hashtable();
			hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
			BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
			System.out.println(desPath);
			File file1 = new File(desPath);
			if(!file1.exists()){
				File parent=file1.getParentFile();
					parent.mkdirs();
				file1.createNewFile();
			}
			MatrixToImageWriter.writeToFile(bitMatrix, "gif", file1);
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
		return false;
	}
	
	
	@SuppressWarnings("unchecked")
	public static boolean stringToImage(String content, String desPath, int width, int height,int backColor,int foreColor) {
		TwoDimensionCodeUtil.backColor=backColor;
		TwoDimensionCodeUtil.foreColor=foreColor;
		try {
			MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
			@SuppressWarnings("rawtypes")
			Hashtable hints = new Hashtable();
			hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
			BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
			System.out.println(desPath);
			File file1 = new File(desPath);
			if(!file1.exists()){
				File parent=file1.getParentFile();
					parent.mkdirs();
				file1.createNewFile();
			}
			TwoDimensionCodeUtil.writeToFile(bitMatrix, "gif", file1);
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
		return false;
	}

	public static void main(String[] args) {
		String content = "測試";
		String path = "D:/book/數學/餐巾紙.jpg";
		String b="ff";
		int a=(int) Long.parseLong("FFFF0000", 16);
		TwoDimensionCodeUtil.stringToImage(content, path, 500, 500, a, 0xff7d7d7d);
		System.out.println(a);
		System.out.println(0xffe1e1e1);
	}
}