diff --git a/README.md b/README.md
index 6deb24d..1d06864 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ Windwork 加密解密组件
 可逆加密算法组件封装，目前支持AzDG、XxTea算法。
 
 ```
-// useage:
+// usage:
 
 $key = '秘钥';
 $txt = '明文~';
@@ -26,7 +26,7 @@ $cfg = [
 $crypt = $cfg['class']($cfg);
 
 // 4、在Windwork框架中使用
-$crypt = crypt();
+$crypt = \wfCrypt();
 
 ```
 
diff --git a/composer.json b/composer.json
index e86c3fe..7c61874 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,8 @@
 		"XXTea",
 		"AzDG"
 	],
-	"version" : "1.0.3",
+	"version" : "1.0.4",
+	"time" : "2017-06-26 16:30:00",
 	"require" : {
 		"php" : ">=5.5.0"
 	},
@@ -23,6 +24,5 @@
 			"name" : "Windwork Community",
 			"homepage" : "http://windwork.org"
 		}
-	],
-	"minimum-stability" : "alpha"
+	]
 }
\ No newline at end of file
diff --git a/lib/strategy/Xxtea.php b/lib/strategy/Xxtea.php
index 46be40f..83ff5ef 100644
--- a/lib/strategy/Xxtea.php
+++ b/lib/strategy/Xxtea.php
@@ -9,8 +9,6 @@
  */
 namespace wf\crypt\strategy;
 
-use \wf\crypt\Exception;
-
 /**
  * 基于xxtea加密算法实现
  * 
@@ -39,7 +37,7 @@ public function encrypt($str, $key)
 		}
 		
 		if (!$key || !is_string($key)) {
-			throw new Exception('[wf\\crypt\\Xxtea::encrypt] param 2 ($key) is required.');
+		    throw new \wf\crypt\Exception('[wf\\crypt\\Xxtea::encrypt] param 2 ($key) is required.');
 		}
 		
 		$v = $this->str2long($str, true);
@@ -83,7 +81,7 @@ public function decrypt($str, $key)
 		}
 		
 		if (!$key || !is_string($key)) {
-			throw new Exception('[wf\\crypt\\Xxtea::decrypt] param 2 ($key) is required.');
+		    throw new \wf\crypt\Exception('[wf\\crypt\\Xxtea::decrypt] param 2 ($key) is required.');
 		}
 		$v = $this->str2long($str, false);
 		$k = $this->str2long($key, false);