后端代码：

public void getIntegralQrcode(HttpServletResponse response, String token) throws BizException, IOException, WriterException {        logger.info("qrcode info ...");                response.setCharacterEncoding("UTF-8");         response.reset();         ServletOutputStream os = response.getOutputStream();                // 请求地址        String url = ConfigProperties.getUrl();        logger.info("qrcode info request url -- > {}", url);                // 加密内容        String base64Code = Base64Utils.getBase64Code(WechatQrcodeTypeEnum.H5.getValue(), maculaConfig.getIntegralQrcodeScanName(), null);        logger.info("qrcode info base64Code -- > {}", base64Code);                // 二维码内容        String content = WechatQrcodeUtil.getRequestUrl(url, "2", base64Code);        logger.info("qrcode info -- > {}", content);                QRCodUtil.encodeQRCodeImage(content, null, WechatQrcodeUtil.IMAGE_WIDTH, WechatQrcodeUtil.IMAGE_HEIGHT, os);        os.flush();         os.close();    }

后端工具类：

public class WechatQrcodeUtil {        static Logger logger = LoggerFactory.getLogger(WechatQrcodeUtil.class);        private static final String TYPE = "type";    private static final String NAME = "name";    private static final String PARAM = "param";        // 加密内容定义区域key    private static final String base64= "base64";        private static final String EQUAL_STR = "=";    private static final String AND_STR = "&";    private static final String QUE_STR = "?";        public static final int IMAGE_WIDTH = 262;    public static final int IMAGE_HEIGHT = 262;            /**     * 放入二维码内容     *      * @param url 请求地址     * @param modelType 请求模块名称     * @param base64 加密内容     * @return     */    public static String getRequestUrl(String url, String modelType, String base64){        StringBuffer sb = new StringBuffer();        sb.append(url);        sb.append(QUE_STR);        sb.append(TYPE).append(EQUAL_STR).append(modelType);        sb.append(AND_STR);        sb.append(base64).append(EQUAL_STR).append(base64);        logger.info("request address: {}", sb.toString());        return sb.toString();    }            /**     * 获取加密参数内容     * @param type 类型 @see{WechatQrcodeTypeEnum}     * @param name      *  
channelName：
     *  
moduleName：
     *  
httpurl：在线页面地址
     * @param urlParams key:value,key:value,...     *      * @return     * @throws UnsupportedEncodingException     */    public static String getBase64Code(String type, String name, Object... urlParams) throws UnsupportedEncodingException{        StringBuffer sb = new StringBuffer();        sb.append(TYPE).append(EQUAL_STR).append(type);        sb.append(AND_STR);        sb.append(NAME).append(EQUAL_STR).append(name);        if(urlParams != null){            sb.append(AND_STR);            sb.append(PARAM).append(EQUAL_STR).append(urlParams);        }        logger.info("request params: {}", sb.toString());        return Base64.encode(sb.toString().getBytes());    }       }

 

 

前端Ajax请求：

<#--  * README * 在页面定义页面token<@macula.formToken /> *  * @author add by liuyc in 2018-11-28 * -->
     

 

 写入页面后的展示：