Google zxing 生成 QRcode（谷歌浏览器二维码生成器插件）

import com.google.zxing.BarcodeFormat;

import com.google.zxing.client.j2se.MatrixToImageWriter;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.qrcode.QRCodeWriter;

import java.io.OutputStream;

public class ZXingCodeUtil {

public static void generatorCode(String url, OutputStream outputStream) throws Exception {

QRCodeWriter qrCodeWriter = new QRCodeWriter();

BitMatrix bitMatrix = qrCodeWriter.encode(url, BarcodeFormat.QR_CODE, 60, 60);

MatrixToImageWriter.writeToStream(bitMatrix, "PNG", outputStream);

}

}