public void testSendCustomMessage() throws WxErrorException {
    ApiTestModule.WxXmlMpInMemoryConfigStorage configStorage =
        (ApiTestModule.WxXmlMpInMemoryConfigStorage) wxService.wxMpConfigStorage;
    WxMpCustomMessage message = new WxMpCustomMessage();
    message.setMsgType(WxConsts.CUSTOM_MSG_TEXT);
    message.setToUser(configStorage.getOpenId());
    message.setContent("欢迎欢迎,热烈欢迎\n换行测试\n超链接:<a href=\"http://www.baidu.com\">Hello World</a>");

    wxService.customMessageSend(message);
  }
  public JsonElement serialize(
      WxMpCustomMessage message, Type typeOfSrc, JsonSerializationContext context) {
    JsonObject messageJson = new JsonObject();
    messageJson.addProperty("touser", message.getToUser());
    messageJson.addProperty("msgtype", message.getMsgType());

    if (WxConsts.CUSTOM_MSG_TEXT.equals(message.getMsgType())) {
      JsonObject text = new JsonObject();
      text.addProperty("content", message.getContent());
      messageJson.add("text", text);
    }

    if (WxConsts.CUSTOM_MSG_IMAGE.equals(message.getMsgType())) {
      JsonObject image = new JsonObject();
      image.addProperty("media_id", message.getMediaId());
      messageJson.add("image", image);
    }

    if (WxConsts.CUSTOM_MSG_VOICE.equals(message.getMsgType())) {
      JsonObject voice = new JsonObject();
      voice.addProperty("media_id", message.getMediaId());
      messageJson.add("voice", voice);
    }

    if (WxConsts.CUSTOM_MSG_VIDEO.equals(message.getMsgType())) {
      JsonObject video = new JsonObject();
      video.addProperty("media_id", message.getMediaId());
      video.addProperty("thumb_media_id", message.getThumbMediaId());
      video.addProperty("title", message.getTitle());
      video.addProperty("description", message.getDescription());
      messageJson.add("video", video);
    }

    if (WxConsts.CUSTOM_MSG_MUSIC.equals(message.getMsgType())) {
      JsonObject music = new JsonObject();
      music.addProperty("title", message.getTitle());
      music.addProperty("description", message.getDescription());
      music.addProperty("thumb_media_id", message.getThumbMediaId());
      music.addProperty("musicurl", message.getMusicUrl());
      music.addProperty("hqmusicurl", message.getHqMusicUrl());
      messageJson.add("music", music);
    }

    if (WxConsts.CUSTOM_MSG_NEWS.equals(message.getMsgType())) {
      JsonObject newsJsonObject = new JsonObject();
      JsonArray articleJsonArray = new JsonArray();
      for (WxMpCustomMessage.WxArticle article : message.getArticles()) {
        JsonObject articleJson = new JsonObject();
        articleJson.addProperty("title", article.getTitle());
        articleJson.addProperty("description", article.getDescription());
        articleJson.addProperty("url", article.getUrl());
        articleJson.addProperty("picurl", article.getPicUrl());
        articleJsonArray.add(articleJson);
      }
      newsJsonObject.add("articles", articleJsonArray);
      messageJson.add("news", newsJsonObject);
    }

    if (StringUtils.isNotBlank(message.getKfAccount())) {
      JsonObject newsJsonObject = new JsonObject();
      newsJsonObject.addProperty("kf_account", message.getKfAccount());
      messageJson.add("customservice", newsJsonObject);
    }

    return messageJson;
  }
 @Override
 public WxMpCustomMessage build() {
   WxMpCustomMessage m = super.build();
   m.setMediaId(this.mediaId);
   return m;
 }