java二维码生成

import java.io.File;
import java.nio.file.Path;
import java.util.HashMap;
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;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

//生成二维码
public class CreateQRCode {

	public static void main(String[] args) {
		int width=300;
		int height=300;
        String format="jpg";
        String content="http://www.zjjansens.com";
        //定义二维码参数
        HashMap hashMap=new HashMap();
        hashMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        hashMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        hashMap.put(EncodeHintType.MARGIN,2);                        
        try {
			BitMatrix bitMatrix=new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height,hashMap);
			Path file=new File("d:/img.jpg").toPath();
			MatrixToImageWriter.writeToPath(bitMatrix,format, file);;
		} catch (Exception e) {
			e.printStackTrace();
		}                
	}
}