add log

app/service/course/wechat.js

@@ -116,13 +116,12 @@ class WechatService extends Service {
     // const resp = await ctx.helper.send_request(url, data, {method: 'POST'});
     // ctx.logger.info('course_wechat_uploadTempMedia_resp: ' + JSON.stringify(resp));
 
-    let ret = '';
     // if (resp.status === 200 && !ctx.isEmpty(resp.data) && resp.data.errCode === 0) {
     //     await this.app.memcache.set('course_wechat_service_image_media_id', resp.data.mediaId, 72*3600);
     //     ret = resp.data.mediaId;
     // }
 
-    request.post({ url, formData: data }, function(error, response, body) {
+    const ret = request.post({ url, formData: data }, function(error, response, body) {
       const resp = {
         statusCode: response.statusCode,
         body: response.body,
@@ -132,8 +131,10 @@ class WechatService extends Service {
       if (response.statusCode === 200) {
         const result = JSON.parse(body);
         ret = result.media_id;
-        ctx.logger.info('ret' + ret);
+        return ret;
       }
+
+      return '';
     });
 
     return ret;