package?llj.mf.utils;

import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.io.IOException;
import?java.io.OutputStream;
import?java.text.SimpleDateFormat;
import?java.util.Date;
import?java.util.HashMap;
import?java.util.Map;

import?javax.imageio.ImageIO;
import?javax.swing.filechooser.FileSystemView;

import?com.google.zxing.BarcodeFormat;
import?com.google.zxing.EncodeHintType;
import?com.google.zxing.MultiFormatWriter;
import?com.google.zxing.common.BitMatrix;

public?class?QrCodeUtil?{

	public?static?void?main（String[]?args）?{
		String?url?=?“http://baidu.com“;
		String?path?=?FileSystemView.getFileSystemView（）.getHomeDirectory（）?+?File.separator?+?“testQrcode“;
		String?fileName?=?new?SimpleDateFormat（“yyyyMMddHHmmss“）.format（new?Date（））?+?“.jpg“;
		createQrCode（url?path?fileName）;
	}

	public?static?String?createQrCode（String?url?String?path?String?fileName）?{
		try?{
			Map?hints?=?new?HashMap<>（）;
			hints.put（EncodeHintType.CHARACTER_SET?“UTF-8“）;
			BitMatrix?bitMatrix?=?new?MultiFormatWriter（）.encode（url?BarcodeFormat.QR_CODE?400?400?hints）;
			File?file?=?new?File（path?fileName）;
			if?（file.exists（）?||?（（file.getParentFile（）.exists（）?||?file.getParentFile（）.mkdirs（））?&&?file.createNewFile（）））?{
				writeToFile（bitMatrix?“jpg“?file）;
				System.out.println（“搞定：“?+?file）;
			}

		}?catch?（Exception?e）?{
			e.printStackTrace（）;
		}
		return?null;
	}

	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）;
		}
	}

	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）;
		}
	}

	private?static?final?int?BLACK?=?0xFF000000;
	private?static?final?int?WHITE?=?0xFFFFFFFF;

	private?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?			for?（int?y?=?0;?y?				image.setRGB（x?y?matrix.get（x?y）???BLACK?:?WHITE）;
			}
		}
		return?image;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????????0??2018-10-23?14:23??sss.html
?????文件???????35417??2018-10-15?14:44??testQrcode\sss.html
?????目錄???????????0??2018-10-16?11:15??testQrcode\
?????目錄???????????0??2017-04-16?11:38??Javademon\
?????文件??????538421??2016-08-10?12:00??Javademon\core-3.1.0.jar
?????文件????????2558??2017-04-16?11:33??Javademon\QrCodeUtil.java