fix token bug

app/service/course/v5/wechat.js

@@ -51,17 +51,16 @@ class WechatService extends Service {
 
     if (!flag) {
       this.ctx.set('content-type', 'text/xml');
-      let xml = {
-        MsgType: 'transfer_customer_service',
-        ToUserName: data.FromUserName,
-        FromUserName: data.ToUserName,
-        CreateTime: parseInt(new Date() / 1000),
-      };
-      const builder = new xml2js.Builder();
-      xml = builder.buildObject(xml);
+      const xml = `<xml>
+      <ToUserName><![CDATA[${data.FromUserName}]]></ToUserName>
+      <FromUserName><![CDATA[${data.ToUserName}]]></FromUserName>
+      <CreateTime>${parseInt(new Date() / 1000)}</CreateTime>
+      <MsgType><![CDATA[transfer_customer_service]]></MsgType>
+  </xml>`;
       this.ctx.body = xml;
+      ctx.logger.info('course_ctx: ' + JSON.stringify(this.ctx));
     }
-    return;
+    // return;
   }
 
   async sendText(data) {