微信公众号发送模版消息

    在我们购买商品或其他操作的时候，这时候微信公众号会推送相关模版消息。接下来简单介绍开发流程：（本文以订单推送为例）

首先在测试号新建模版消息

格式如下：

{{first.DATA}}
用户名：{{keyword1.DATA}}
订单号：{{keyword2.DATA}}
订单金额：{{keyword3.DATA}}
商品信息：{{keyword4.DATA}}
{{remark.DATA}

这里会生成一个模版ID，后面会用到

然后后台在上传订单接口，上传成功后调用发送模版消息

public void sendOrderTemplateMessage(Order order) {
AugeWechatUser wechatUser = augeWechatUserMapper.selectByPhone(order.getPhone());
String goodsInfo = "";
for (AugeSaleItem augeSaleItem : order.getData()) {
goodsInfo += augeSaleItem.getItemName() + "×" + augeSaleItem.getItemNum() + "\n\t\t\t";
}
DataInfo first = new DataInfo("恭喜你购买成功！", "#ff0000");
DataInfo keyword1 = new DataInfo(wechatUser.getNickName(), "#ff0000");
DataInfo keyword2 = new DataInfo(order.getOrderNumber(), "#ff0000");
DataInfo keyword3 = new DataInfo("￥" + order.getSumPrice() + "元", "#ff0000");
DataInfo keyword4 = new DataInfo(goodsInfo, "#ff0000");
DataInfo remark = new DataInfo("欢迎再次购买！", "#000000");

OrderData orderData = new OrderData(first, keyword1, keyword2, keyword3, keyword4, remark);
OrderTemplateMessage templateMessage = new OrderTemplateMessage();
templateMessage.setTouser(wechatUser.getId());
templateMessage.setTemplate_id(orderTemplateId);//模版ID
templateMessage.setData(orderData);

OkHttpUtil.getInstance().doPost(WechatConstant.getTemplateUrl(wechatAccessTokenService.takeAccessToken()),
JSON.toJSONString(templateMessage));
}

简单介绍 OkHttpUtil
OkHttp是一个第三方类库，用于Android中请求网络。public String doPost(String url, String param) {
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
RequestBody body = RequestBody.create(JSON, param);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Call call = okHttpClient.newCall(request);
try {
Response response = call.execute();
return response.body().string();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

注意配置订单模版ID

@Value("#{setting.ordertemplateid}")
private String orderTemplateId;