fix wechat bug

app/controller/common/test.js

@@ -11,7 +11,7 @@ class TestController extends Controller {
       FromUserName: 'from',
       CreateTime: parseInt(new Date() / 1000),
     };
-    const builder = new xml2js.Builder();
+    const builder = new xml2js.Builder({ rootName: 'xml' });
     const xml = builder.buildObject(data);
     this.ctx.body = xml;
     console.log(this.ctx);

app/service/course/v5/wechat.js

@@ -56,10 +56,10 @@ class WechatService extends Service {
         FromUserName: data.ToUserName,
         CreateTime: parseInt(new Date() / 1000),
       };
-      const builder = new xml2js.Builder();
+      const builder = new xml2js.Builder({ rootName: 'xml' });
       xml = builder.buildObject(xml);
       this.ctx.body = xml;
-      ctx.logger.info('course_ctx: ' + JSON.stringify(this.ctx));
+      ctx.logger.info('course_ctx: ' + xml);
     }
     // return;
   }