@Overridepublic String invoke(ServletInputStream inputStream) throws WeixinException {try {//将输入流转换为字符串String xmlMsg = XStreamFactory.inputStream2String(inputStream);if (Configuration.isDebug()) {System.out.println("获取POST的消息:");System.out.println(xmlMsg);System.out.println("------------------------");/*** 获取扫码时的用户数据,EventKey (包含扫码登录和扫码推广二维码)*/try {System.out.println("test");Map<String, String> xmlMap = MapUtil.xmlToMap(xmlMsg);System.out.println("xmlMap.get(\"ToUserName\"):"+xmlMap.get("ToUserName"));if(xmlMap.get("ToUserName")!=null){xmlObj = new ScanQrcodeXml();xmlObj.setToUserName(xmlMap.get("ToUserName"));//wechat Original idxmlObj.setFromUserName(xmlMap.get("FromUserName"));//openid
                        System.out.println(xmlObj.getFromUserName());scanQrcodeXmlLoader.setScanQrcodeXml(xmlObj);if(xmlMap.get("EventKey")!=null && xmlMap.get("EventKey").startsWith("qrscene_")){System.out.println("xmlMap.get(\"EventKey\"):"+xmlMap.get("EventKey"));xmlObj.setEventKey(xmlMap.get("EventKey"));scanQrcodeXmlLoader.setScanQrcodeXml(xmlObj);}}} catch (Exception e) {e.printStackTrace();}}return this.invoke(xmlMsg);} catch (IOException ex) {throw new WeixinException("输入流转换错误：", ex);}}

@Overridepublic OutputMessage qrsceneSubscribe(QrsceneSubscribeEventMessage msg) {TextOutputMessage out = new TextOutputMessage();out.setContent("扫码场景关注事件");//TODO 在这里执行A君的推广二维码图片生成及推送return out;}

package com.baigehuidi.demo.weixin4j.util;import com.baigehuidi.demo.loader.WeixinInsLoader;
import com.baigehuidi.demo.weixin4j.WeixinException;
import com.baigehuidi.demo.weixin4j.model.message.MediaType;
import com.baigehuidi.demo.weixin4j.model.qrcode.Qrcode;
import com.baigehuidi.demo.weixin4j.model.qrcode.QrcodeType;import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Date;/*** TODO 待完善将D:盘符下的图片(底部海报)改为参数传入.(涉及到Weixin类) 2018-12-19*/
public class QrcodeSpreadUtil {/*** 该方法将用户A扫码用户B后,关注微信平台时,可以获取到一个含有A自身openid参数的推广二维码* @param openid 传入用户的openid* @return 新的二维码图片的MediaId*/public static String getNewQrcodeMediaId(String openid) {Qrcode qrcode = null;String qrcodeUrl = null;String picUrlOnServer = null;String imgMediaId = null;try {//永久二维码过期时间不会被加入参数qrcode = WeixinInsLoader.getWeixinInstance().qrcode().create(QrcodeType.QR_LIMIT_STR_SCENE, openid, 99);//获取推广二维码图片URL
//                qrcodeUrl = WeixinInsLoader.getWeixinInstance().qrcode().showQrcode(qrcode.getTicket());//将二维码图片保存//图片保存地址: 从weixin4j.properties中获取保存路径,图片格式为.jpgpicUrlOnServer = WeixinInsLoader.getWeixinInstance().getWeixinConfig().getQrcodeSaveUrl() + new Date().getTime() + openid + ".jpg";//保存单纯的推广二维码到服务器路径
            WeixinInsLoader.getWeixinInstance().qrcode().saveQrcode(qrcode.getTicket(), picUrlOnServer);/*** 设置图片重叠,将二维码放到推广海报上.*///顶部二维码BufferedImage top = ModifyImageUtil.loadImageLocal(picUrlOnServer);//底部海报BufferedImage bottom = ModifyImageUtil.loadImageLocal("D:/img/action-adventure-flight-918648.jpg");//生成带海报的二维码,x,y值需要根据前端设定String qrcodeImgUrl = ModifyImageUtil.writeImageLocal(picUrlOnServer, ModifyImageUtil.modifyImageTogether(top, bottom, 220, 220));//上传至微信服务器素材中心,获取图片的mediaId 用户回复给用户imgMediaId = WeixinInsLoader.getWeixinInstance().media().upload(MediaType.Image, new File(qrcodeImgUrl));System.err.println("imgMediaId:" + imgMediaId);return imgMediaId;} catch (WeixinException e) {e.printStackTrace();return null;}}
}

 /* 之下为新加的方法,将图片处理为圆形图片 */public static BufferedImage transferImgForRoundImage(String url){BufferedImage resultImg = null;try {if (StringUtils.isEmpty(url)) {return null;}BufferedImage buffImg1 = ImageIO.read(new File(url));resultImg = new BufferedImage(buffImg1.getWidth(), buffImg1.getHeight(), BufferedImage.TYPE_INT_RGB);Graphics2D g = resultImg.createGraphics();Ellipse2D.Double shape = new Ellipse2D.Double(0, 0, buffImg1.getWidth(), buffImg1.getHeight());//使用setRenderingHint 设置抗锯齿
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);resultImg = g.getDeviceConfiguration().createCompatibleImage(buffImg1.getWidth(), buffImg1.getHeight(),Transparency.TRANSLUCENT);g = resultImg.createGraphics();// 使用 setRenderingHint 设置抗锯齿
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);g.setClip(shape);g.drawImage(buffImg1, 0, 0, null);g.dispose();}catch(MalformedURLException e){e.printStackTrace();System.err.println("MalformedURLException in ModifyImageUtil.java");}catch(IOException e){e.printStackTrace();System.err.println("IOException in ModifyImageUtil.java");}return resultImg;}