response fix

app/controller/response.js

@@ -6,17 +6,23 @@ class ResponseController extends Controller {
 
     //内部授权注册
     async internalAuth() {
-
+        //https://b.jianbing.com/51business/api/response/internal/auth?target_url=https://b.jianbing.com/webserve/51estate/index?channel_id=fc_gjjfc1
         const { ctx } = this;
         const header = ctx.request.header;
         const input_params = ctx.query;
-        const target_url = input_params.target_url;
+        let target_url = input_params.target_url;
         const rule = {
             target_url: { type: 'string', required: true },
             channel_id: { type: 'string', required: true },
         }
         ctx.validate(rule, input_params);
 
+        if (target_url.indexOf('?') !== -1) {
+            target_url += `&channel_id=${channel_id}`;
+        } else {
+            target_url += `?channel_id=${channel_id}`;
+        }
+
         //如果cookie中已存在 5要素 则可直接 跳到目标地址
         const token = ctx.cookies.get('token', { signed: false });
         const user_id = ctx.cookies.get('user_id', { signed: false });