diff --git a/app/api/mobile/apis/homeworks.rb b/app/api/mobile/apis/homeworks.rb
new file mode 100644
index 000000000..99acfd87f
--- /dev/null
+++ b/app/api/mobile/apis/homeworks.rb
@@ -0,0 +1,29 @@
+#coding=utf-8
+
+module Mobile
+  module Apis
+    class Homeworks < Grape::API
+
+      def self.get_servcie
+        new HomeworkService
+      end
+
+      resources :homeworks do
+
+        desc "作业详情"
+        params do
+          requires :id, type: Integer, desc: "作业ID"
+        end
+        route_param  :id do
+          get do
+            get_service.show_homework params
+          end
+        end
+
+
+
+
+      end
+    end
+  end
+end
diff --git a/app/api/mobile/middleware/error_handler.rb b/app/api/mobile/middleware/error_handler.rb
index d0db6ebf1..018191d8d 100644
--- a/app/api/mobile/middleware/error_handler.rb
+++ b/app/api/mobile/middleware/error_handler.rb
@@ -7,7 +7,7 @@ module Mobile
           @app.call(@env)
         rescue =>e
           message = {status: 1, message: e.message }.to_json
-          puts(detail: e.backtrace.join("\n")) if Rails.env.development?
+          puts(e.backtrace.join("\n")) if Rails.env.development?
           status = 200
           headers = { 'Content-Type' => content_type }
           Rack::Response.new([message], status, headers).finish