diff --git a/application/index/model/Avatar.php b/application/index/model/Avatar.php
index d95f530f..2eee3cbb 100644
--- a/application/index/model/Avatar.php
+++ b/application/index/model/Avatar.php
@@ -4,7 +4,7 @@ namespace app\index\model;
 use think\Model;
 use think\Db;
 use \app\index\model\Option;
-use \app\index\model\FileManage;
+use \app\index\model\LocalAdapter;
 
 class Avatar extends Model{
 
@@ -90,7 +90,7 @@ class Avatar extends Model{
 		$filePath = ROOT_PATH . 'public/avatars/' . $this->fileName.$siezSuffix;
 		if(file_exists($filePath)){
 			ob_end_clean();
-			header('Content-Type: '.FileManage::getMimetype($filePath)); 
+			header('Content-Type: '.LocalAdapter::getMimetype($filePath)); 
 			$fileObj = fopen($filePath,"r");
 			while(!feof($fileObj)){
 				echo fread($fileObj,2097152);
@@ -131,7 +131,7 @@ class Avatar extends Model{
 		}
 		ob_end_clean();
 		$filePath = ROOT_PATH . 'static/img/default.png' .$siezSuffix;
-		header('Content-Type: '.FileManage::getMimetype($filePath)); 
+		header('Content-Type: '.LocalAdapter::getMimetype($filePath)); 
 			$fileObj = fopen($filePath,"r");
 			while(!feof($fileObj)){
 				echo fread($fileObj,2097152);
diff --git a/application/index/model/FileManage.php b/application/index/model/FileManage.php
index 4d2cae88..64d7aac3 100644
--- a/application/index/model/FileManage.php
+++ b/application/index/model/FileManage.php
@@ -497,30 +497,31 @@ class FileManage extends Model{
 	 * @return array 重定向信息
 	 */
 	public function getThumb(){
-		switch ($this->policyData["policy_type"]) {
-			case 'qiniu':
-				$Redirect = $this->getQiniuThumb();
-				return $Redirect;
-			case 'local':
-				$Redirect = $this->getLocalThumb();
-				return $Redirect;
-				break;
-			case 'oss':
-				$Redirect = $this->getOssThumb();
-				return $Redirect;
-				break;
-			case 'upyun':
-				$Redirect = $this->getUpyunThumb();
-				return $Redirect;
-				break;
-			case 'remote':
-				$remote = new Remote($this->policyData);
-				return [1,$remote->thumb($this->fileData["pre_name"],explode(",",$this->fileData["pic_info"]))];
-				break;
-			default:
-				# code...
-				break;
-		}
+		return $this->adapter->getThumb();
+		// switch ($this->policyData["policy_type"]) {
+		// 	case 'qiniu':
+		// 		$Redirect = $this->getQiniuThumb();
+		// 		return $Redirect;
+		// 	case 'local':
+		// 		$Redirect = $this->getLocalThumb();
+		// 		return $Redirect;
+		// 		break;
+		// 	case 'oss':
+		// 		$Redirect = $this->getOssThumb();
+		// 		return $Redirect;
+		// 		break;
+		// 	case 'upyun':
+		// 		$Redirect = $this->getUpyunThumb();
+		// 		return $Redirect;
+		// 		break;
+		// 	case 'remote':
+		// 		$remote = new Remote($this->policyData);
+		// 		return [1,$remote->thumb($this->fileData["pre_name"],explode(",",$this->fileData["pic_info"]))];
+		// 		break;
+		// 	default:
+		// 		# code...
+		// 		break;
+		// }
 	}
 
 	/**
@@ -530,29 +531,30 @@ class FileManage extends Model{
 	 * @return array 文件下载URL
 	 */
 	public function Download($isAdmin=false){
-		switch ($this->policyData["policy_type"]) {
-			case 'qiniu':
-				return $DownloadHandler = $this->qiniuDownload();
-				break;
-			case 'local':
-				return $DownloadHandler = $this->localDownload($isAdmin);
-				break;
-			case 'oss':
-				return $DownloadHandler = $this->ossDownload();
-				break;
-			case 'upyun':
-				return $DownloadHandler = $this->upyunDownload();
-				break;
-			case 's3':
-				return $DownloadHandler = $this->s3Download();
-				break;
-			case 'remote':
-				return $DownloadHandler = $this->remoteDownload();
-				break;
-			default:
-				# code...
-				break;
-		}
+		return $this->adapter->Download($isAdmin);
+		// switch ($this->policyData["policy_type"]) {
+		// 	case 'qiniu':
+		// 		return $DownloadHandler = $this->qiniuDownload();
+		// 		break;
+		// 	case 'local':
+		// 		return $DownloadHandler = $this->localDownload($isAdmin);
+		// 		break;
+		// 	case 'oss':
+		// 		return $DownloadHandler = $this->ossDownload();
+		// 		break;
+		// 	case 'upyun':
+		// 		return $DownloadHandler = $this->upyunDownload();
+		// 		break;
+		// 	case 's3':
+		// 		return $DownloadHandler = $this->s3Download();
+		// 		break;
+		// 	case 'remote':
+		// 		return $DownloadHandler = $this->remoteDownload();
+		// 		break;
+		// 	default:
+		// 		# code...
+		// 		break;
+		// }
 	}
 
 	/**
@@ -659,7 +661,8 @@ class FileManage extends Model{
 			if(in_array($key,$uniquePolicy["qiniuList"])){
 				self::qiniuDelete($value,$uniquePolicy["qiniuPolicyData"][$key][0]);
 			}else if(in_array($key,$uniquePolicy["localList"])){
-				self::localDelete($value,$uniquePolicy["localPolicyData"][$key][0]);
+				LocalAdapter::DeleteFile($value,$uniquePolicy["localPolicyData"][$key][0]);
+				self::deleteFileRecord(array_column($value, 'id'),array_sum(array_column($value, 'size')),$value[0]["upload_user"]);
 			}else if(in_array($key,$uniquePolicy["ossList"])){
 				self::ossDelete($value,$uniquePolicy["ossPolicyData"][$key][0]);
 			}else if(in_array($key,$uniquePolicy["upyunList"])){
@@ -739,24 +742,6 @@ class FileManage extends Model{
 
 	}
 
-	/**
-	 * 删除某一策略下的指定本地文件
-	 *
-	 * @param array $fileList   待删除文件的数据库记录
-	 * @param array $policyData 待删除文件的上传策略信息
-	 * @return void
-	 */
-	static function localDelete($fileList,$policyData){
-		$fileListTemp = array_column($fileList, 'pre_name'); 
-		foreach ($fileListTemp as $key => $value) {
-			@unlink(ROOT_PATH . 'public/uploads/'.$value);
-			if(file_exists(ROOT_PATH . 'public/thumb/'.$value."_thumb")){
-				@unlink(ROOT_PATH . 'public/thumb/'.$value."_thumb");
-			}
-		}
-		self::deleteFileRecord(array_column($fileList, 'id'),array_sum(array_column($fileList, 'size')),$fileList[0]["upload_user"]);
-	}
-
 	/**
 	 * 删除某一策略下的指定七牛文件
 	 *
@@ -839,46 +824,6 @@ class FileManage extends Model{
 		])->setDec('used_storage', $size);
 	}
 
-	static function getThumbSize($width,$height){
-		$rate = $width/$height;
-		$maxWidth = 90;
-		$maxHeight = 39;
-		$changeWidth = 39*$rate;
-		$changeHeight = 90/$rate;
-		if($changeWidth>=$maxWidth){
-			return [(int)$changeHeight,90];
-		}
-		return [39,(int)$changeWidth];
-	}
-
-	static function outputThumb($path){
-		ob_end_clean();
-		if(!input("get.cache")=="no"){
-			header("Cache-Control: max-age=10800");
-		}
-		header('Content-Type: '.self::getMimetype($path)); 
-		$fileObj = fopen($path,"r");
-		echo fread($fileObj,filesize($path)); 
-		fclose($file); 
-	}
-
-	public function getLocalThumb(){
-		$picInfo = explode(",",$this->fileData["pic_info"]);
-		$picInfo = self::getThumbSize($picInfo[0],$picInfo[1]);
-		if(file_exists(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]."_thumb")){
-			self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]."_thumb");
-			return [0,0];
-		}
-		$thumbImg = new Thumb(ROOT_PATH . "public/uploads/".$this->fileData["pre_name"]);
-		$thumbImg->thumb($picInfo[1], $picInfo[0]);
-		if(!is_dir(dirname(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]))){
-			mkdir(dirname(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]),0777,true);
-		}
-		$thumbImg->out(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]."_thumb");
-		self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileData["pre_name"]."_thumb");
-		return [0,0];
-	}
-
 	public function getOssThumb(){
 		if(!$this->policyData['bucket_private']){
 			$fileUrl = $this->policyData["url"].$this->fileData["pre_name"]."?x-oss-process=image/resize,m_lfit,h_39,w_90";
@@ -1030,28 +975,6 @@ class FileManage extends Model{
 		}
 	}
 
-	public function localDownload($isAdmin=false){
-		$speedLimit = Db::name('groups')->where('id',$this->userData["user_group"])->find();
-		$rangeTransfer = $speedLimit["range_transfer"];
-		$speedLimit = $speedLimit["speed"];
-		$sendFileOptions = Option::getValues(["download"]);
-		if($sendFileOptions["sendfile"] == "1"){
-			$this->sendFile($speedLimit,$rangeTransfer,true,$sendFileOptions["header"]);
-		}else{
-			if($isAdmin){
-				$speedLimit = "";
-			}
-			if($speedLimit == "0"){
-				exit();
-			}else if(empty($speedLimit)){
-				$this->outputWithoutLimit(true,$rangeTransfer);
-				exit();
-			}else if((int)$speedLimit > 0){
-				$this->outputWithLimit($speedLimit,true);
-			}
-		}
-	}
-
 	/**
 	 * [List description]
 	 * @param [type] $path [description]
@@ -1363,33 +1286,34 @@ class FileManage extends Model{
 	}
 
 	public function signTmpUrl(){
-		switch ($this->policyData["policy_type"]) {
-			case 'qiniu':
-				return $this->qiniuPreview()[1];
-				break;
-			case 'oss':
-				return $this->ossPreview()[1];
-				break;
-			case 'upyun':
-				return $this->upyunPreview()[1];
-				break;
-			case 's3':
-				return $this->s3Preview()[1];
-				break;
-			case 'local':
-				$options = Option::getValues(["oss","basic"]);
-				$timeOut = $options["timeout"];
-				$delayTime = time()+$timeOut;
-				$key=$this->fileData["id"].":".$delayTime.":".md5($this->userData["user_pass"].$this->fileData["id"].$delayTime.config("salt"));
-				return $options['siteURL']."Callback/TmpPreview/key/".$key;
-				break;
-			case 'remote':
-				return $this->remotePreview()[1];
-				break;
-			default:
-				# code...
-				break;
-		}
+		return $this->adapter->signTmpUrl()[1];
+		// switch ($this->policyData["policy_type"]) {
+		// 	case 'qiniu':
+		// 		return $this->qiniuPreview()[1];
+		// 		break;
+		// 	case 'oss':
+		// 		return $this->ossPreview()[1];
+		// 		break;
+		// 	case 'upyun':
+		// 		return $this->upyunPreview()[1];
+		// 		break;
+		// 	case 's3':
+		// 		return $this->s3Preview()[1];
+		// 		break;
+		// 	case 'local':
+		// 		$options = Option::getValues(["oss","basic"]);
+		// 		$timeOut = $options["timeout"];
+		// 		$delayTime = time()+$timeOut;
+		// 		$key=$this->fileData["id"].":".$delayTime.":".md5($this->userData["user_pass"].$this->fileData["id"].$delayTime.config("salt"));
+		// 		return $options['siteURL']."Callback/TmpPreview/key/".$key;
+		// 		break;
+		// 	case 'remote':
+		// 		return $this->remotePreview()[1];
+		// 		break;
+		// 	default:
+		// 		# code...
+		// 		break;
+		// }
 	}
 
 }
diff --git a/application/index/model/LocalAdapter.php b/application/index/model/LocalAdapter.php
index 7e3aafe4..c1129a6c 100644
--- a/application/index/model/LocalAdapter.php
+++ b/application/index/model/LocalAdapter.php
@@ -2,9 +2,13 @@
 namespace app\index\model;
 
 use think\Model;
+use think\Db;
 
 use \app\index\model\Option;
 
+/**
+ * 本地策略文件管理适配器
+ */
 class LocalAdapter extends Model{
 
     private $fileModel;
@@ -265,7 +269,118 @@ class LocalAdapter extends Model{
 			return $range;  
 		}  
 		return null;  
-	}  
+    }
+
+    /**
+     * 生成/返回 文件缩略图
+     *
+     * @return array 重定向信息
+     */
+    public function getThumb(){
+		$picInfo = explode(",",$this->fileModel["pic_info"]);
+		$picInfo = self::getThumbSize($picInfo[0],$picInfo[1]);
+		if(file_exists(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb")){
+			self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
+			return [0,0];
+		}
+		$thumbImg = new Thumb(ROOT_PATH . "public/uploads/".$this->fileModel["pre_name"]);
+		$thumbImg->thumb($picInfo[1], $picInfo[0]);
+		if(!is_dir(dirname(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]))){
+			mkdir(dirname(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]),0777,true);
+		}
+		$thumbImg->out(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
+		self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
+		return [0,0];
+    }
+    
+    /**
+     * 计算缩略图大小
+     *
+     * @param int $width  原始宽
+     * @param int $height 原始高
+     * @return array
+     */
+    static function getThumbSize($width,$height){
+		$rate = $width/$height;
+		$maxWidth = 90;
+		$maxHeight = 39;
+		$changeWidth = 39*$rate;
+		$changeHeight = 90/$rate;
+		if($changeWidth>=$maxWidth){
+			return [(int)$changeHeight,90];
+		}
+		return [39,(int)$changeWidth];
+    }
+    
+    /**
+     * 输出缩略图
+     *
+     * @param string $path 缩略图文件路径
+     * @return void
+     */
+    static function outputThumb($path){
+		ob_end_clean();
+		if(!input("get.cache")=="no"){
+			header("Cache-Control: max-age=10800");
+		}
+		header('Content-Type: '.self::getMimetype($path)); 
+		$fileObj = fopen($path,"r");
+		echo fread($fileObj,filesize($path)); 
+		fclose($file); 
+    }
+    
+    /**
+     * 处理下载请求
+     *
+     * @param boolean $isAdmin 是否为管理员请求
+     * @return void
+     */
+    public function Download($isAdmin=false){
+		$speedLimit = Db::name('groups')->where('id',$this->userModel["user_group"])->find();
+		$rangeTransfer = $speedLimit["range_transfer"];
+		$speedLimit = $speedLimit["speed"];
+		$sendFileOptions = Option::getValues(["download"]);
+		if($sendFileOptions["sendfile"] == "1"){
+			$this->sendFile($speedLimit,$rangeTransfer,true,$sendFileOptions["header"]);
+		}else{
+			if($isAdmin){
+				$speedLimit = "";
+			}
+			if($speedLimit == "0"){
+				exit();
+			}else if(empty($speedLimit)){
+				$this->outputWithoutLimit(true,$rangeTransfer);
+				exit();
+			}else if((int)$speedLimit > 0){
+				$this->outputWithLimit($speedLimit,true);
+			}
+		}
+    }
+    
+    /**
+	 * 删除指定本地文件
+	 *
+	 * @param array $fileList   待删除文件的数据库记录
+	 * @param array $policyData 待删除文件的上传策略信息
+	 * @return void
+	 */
+	static function DeleteFile($fileList,$policyData){
+		$fileListTemp = array_column($fileList, 'pre_name'); 
+		foreach ($fileListTemp as $key => $value) {
+			@unlink(ROOT_PATH . 'public/uploads/'.$value);
+			if(file_exists(ROOT_PATH . 'public/thumb/'.$value."_thumb")){
+				@unlink(ROOT_PATH . 'public/thumb/'.$value."_thumb");
+			}
+		}
+    }
+    
+    public function signTmpUrl(){
+        $options = Option::getValues(["oss","basic"]);
+		$timeOut = $options["timeout"];
+		$delayTime = time()+$timeOut;
+		$key=$this->fileModel["id"].":".$delayTime.":".md5($this->userModel["user_pass"].$this->fileModel["id"].$delayTime.config("salt"));
+		return [1,$options['siteURL']."Callback/TmpPreview/key/".$key];
+    }
 
 }
 
diff --git a/public/uploads/chunks/.gitignore b/public/uploads/chunks/.gitignore
new file mode 100644
index 00000000..c96a04f0
--- /dev/null
+++ b/public/uploads/chunks/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
\ No newline at end of file