diff --git a/library/think/File.php b/library/think/File.php
index e9111235..eb0d499a 100644
--- a/library/think/File.php
+++ b/library/think/File.php
@@ -20,6 +20,8 @@ class File extends SplFileObject
      * @var string
      */
     private $error = '';
+    // 当前完整文件名
+    protected $filename;
     // 文件上传命名规则
     protected $rule = 'date';
     // 单元测试
@@ -28,11 +30,12 @@ class File extends SplFileObject
     // 上传文件信息
     protected $info;
 
-    public function __construct($filename, $info = [],$isTest=false)
+    public function __construct($filename, $info = [], $isTest = false)
     {
         parent::__construct($filename);
         $this->info     = $info;
         $this->isTest   = $isTest;
+        $this->filename = $this->getRealPath();
     }
 
     /**
@@ -71,7 +74,7 @@ class File extends SplFileObject
     public function getMime()
     {
         $finfo = finfo_open(FILEINFO_MIME_TYPE);
-        return finfo_file($finfo, $this->getRealPath());
+        return finfo_file($finfo, $this->filename);
     }
 
     /**
@@ -92,9 +95,9 @@ class File extends SplFileObject
     public function isValid()
     {
         if($this->isTest){
-            return is_file($this->getRealPath());
+            return is_file($this->filename);
         }
-        return is_uploaded_file($this->getRealPath());
+        return is_uploaded_file($this->filename);
     }
 
     /**
@@ -129,8 +132,8 @@ class File extends SplFileObject
 
         /* 移动文件 */
         if($this->isTest){
-            rename($this->getRealPath(),$path.$savename);
-        } elseif (!move_uploaded_file($this->getRealPath(), $path . $savename)) {
+            rename($this->filename, $path.$savename);
+        } elseif (!move_uploaded_file($this->filename, $path . $savename)) {
             $this->error = '文件上传保存错误！';
             return false;
         }
@@ -152,11 +155,11 @@ class File extends SplFileObject
             } else {
                 switch ($this->rule) {
                     case 'md5':
-                        $md5      = md5_file($this->getRealPath());
+                        $md5      = md5_file($this->filename);
                         $savename = substr($md5, 0, 2) . DS . substr($md5, 2);
                         break;
                     case 'sha1':
-                        $sha1     = sha1_file($this->getRealPath());
+                        $sha1     = sha1_file($this->filename);
                         $savename = substr($sha1, 0, 2) . DS . substr($sha1, 2);
                         break;
                     case 'date':