diff --git a/framework/library/Application.php b/framework/library/Application.php
index 71131e7..74da3a6 100644
--- a/framework/library/Application.php
+++ b/framework/library/Application.php
@@ -83,10 +83,10 @@ class Application
 
         // 处理请求并得到数据
         $response = Response::instance()->header([
-            'X-Powered-By: TOP-Framework'
+            'X-Powered-By: TOP-Framework',
         ])->send($router->execute());
-
-        // 响应内容
+        
+        // 统一输出响应内容
         echo $response->content;
 
     }
diff --git a/framework/library/exception/ResponseException.php b/framework/library/exception/ResponseException.php
new file mode 100644
index 0000000..907504c
--- /dev/null
+++ b/framework/library/exception/ResponseException.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace top\library\exception;
+
+class ResponseException extends BaseException
+{
+    public function __construct($message = "", $code = 0, \Throwable $previous = null)
+    {
+        parent::__construct('[ResponseException]' . $message, $code, $previous);
+    }
+
+    /**
+     * @param \Exception $exception
+     */
+    public function handler($exception = null)
+    {
+        parent::handler($this); // TODO: Change the autogenerated stub
+    }
+}
diff --git a/framework/library/http/Request.php b/framework/library/http/Request.php
index 5adb2d3..2493d08 100644
--- a/framework/library/http/Request.php
+++ b/framework/library/http/Request.php
@@ -2,7 +2,6 @@
 
 namespace top\library\http;
 
-use top\library\Application;
 use top\library\Router;
 use top\traits\Instance;
 
diff --git a/framework/library/http/Response.php b/framework/library/http/Response.php
index a2b2268..d15adec 100644
--- a/framework/library/http/Response.php
+++ b/framework/library/http/Response.php
@@ -2,7 +2,7 @@
 
 namespace top\library\http;
 
-use Exception;
+use top\library\exception\ResponseException;
 use top\library\View;
 use top\traits\Instance;
 use top\traits\Json;
@@ -100,6 +100,7 @@ class Response
         foreach ($this->header as $value) {
             header($value);
         }
+
         return $this;
     }
 
@@ -118,7 +119,7 @@ class Response
                 'Status ' . $text,
             ]);
         }
-        throw new Exception('不支持的状态码：' . $code);
+        throw new ResponseException('不支持的状态码：' . $code);
     }
 
     /**
@@ -148,6 +149,23 @@ class Response
         }
     }
 
+    /**
+     * 输出文件
+     * @param $filename
+     * @param $name
+     * @return Response
+     */
+    public function sendFile($filename = null, $name = null)
+    {
+        if (is_file($filename)) {
+            $name = ($name) ? $name : uniqid() . '.' . substr($filename, strrpos($filename, '.') + 1);
+            return $this->header([
+                'Content-Disposition: attachment; filename="' . $name . '"',
+            ])->code(200)->send(readfile($filename));
+        }
+        throw new ResponseException('不存在的文件：' . $filename);
+    }
+
     /**
      * 处理数据
      * @param $data
@@ -173,13 +191,4 @@ class Response
         return $data;
     }
 
-    /**
-     * 直接echo处理
-     * @return string
-     */
-    public function __toString()
-    {
-        return $this->content;
-    }
-
 }