add clear

wx/WxClient.php

@@ -128,7 +128,7 @@ class WxClient
 
 		$client = $this->getClient($this->getHostPort(), $url, $data);
 		if ($client->statusCode < 0) {
-			throw new \Exception('连接错误!');
+			throw new \Exception($client->errMsg);
 		}
 		$body = $client->body;
 		$client->close();