diff --git a/convention.php b/convention.php
index 42371075..73ec395b 100644
--- a/convention.php
+++ b/convention.php
@@ -72,6 +72,10 @@ return [
     // URL模块映射
     'url_module_map'        => [],
 
+    // 默认输出类型
+    'default_return_type'   => 'html',
+    // 默认语言
+    'default_lang'          => 'zh-cn',
     // +----------------------------------------------------------------------
     // | 视图及模板设置
     // +----------------------------------------------------------------------
@@ -113,12 +117,15 @@ return [
         'prefix' => '',
         'expire' => 0,
     ],
+    // 是否使用session
+    'use_session'           => true,
 
     // +----------------------------------------------------------------------
     // | 会话设置
     // +----------------------------------------------------------------------
 
     'session'               => [
+        'id'         => '',
         'prefix'     => 'think',
         'type'       => '',
         'auto_start' => true,
diff --git a/library/think/cookie.php b/library/think/cookie.php
index 6ab2a9fe..8ab69af9 100644
--- a/library/think/cookie.php
+++ b/library/think/cookie.php
@@ -82,7 +82,8 @@ class Cookie
         $name = $config['prefix'] . $name;
         // 设置cookie
         if (is_array($value)) {
-            $value = 'think:' . json_encode(array_map('urlencode', $value));
+            array_walk_recursive($value, $this->jsonFormatProtect, 'encode');
+            $value = 'think:' . json_encode($value);
         }
         $expire = !empty($config['expire']) ? time() + intval($config['expire']) : 0;
         setcookie($name, $value, $expire, $config['path'], $config['domain'], $config['secure'], $config['httponly']);
@@ -103,10 +104,10 @@ class Cookie
             $value = $_COOKIE[$name];
             if (0 === strpos($value, 'think:')) {
                 $value = substr($value, 6);
-                return array_map('urldecode', json_decode($value, true));
-            } else {
-                return $value;
+                $value = json_decode(MAGIC_QUOTES_GPC ? stripslashes($value) : $value, true);
+                array_walk_recursive($value, $this->jsonFormatProtect, 'decode');
             }
+            return $value;
         } else {
             return null;
         }
@@ -156,4 +157,12 @@ class Cookie
         }
         return;
     }
+    
+    private static function jsonFormatProtect(&$val, $key, $type = 'encode')
+    {
+        if (!empty($val) && true !== $val) {
+            $val = 'decode' == $type ? urldecode($val) : urlencode($val);
+        }
+    }
+
 }
diff --git a/library/think/session.php b/library/think/session.php
index 6f4b1fbf..b3f69cb6 100644
--- a/library/think/session.php
+++ b/library/think/session.php
@@ -39,7 +39,7 @@ class Session
         if (isset($config['prefix'])) {
             self::$prefix = $config['prefix'];
         }
-        if (isset($config['id'])) {
+        if (isset($config['id']) && !empty($config['id'])) {
             session_id($config['id']);
         }
         if (isset($config['name'])) {