diff --git a/base.php b/base.php
index b6a82832..986db24a 100644
--- a/base.php
+++ b/base.php
@@ -34,6 +34,7 @@ defined('VAR_CONTROLLER')   OR define('VAR_CONTROLLER',   'c');
 defined('VAR_ACTION')   OR define('VAR_ACTION',  'a');
 defined('APP_DEBUG')    OR define('APP_DEBUG',    false); // 是否调试模式
 defined('ENV_PREFIX')   OR define('ENV_PREFIX',    'T_'); // 环境变量的配置前缀
+defined('IS_API')       OR define('IS_API',    false); // 是否API接口
 
 // 应用模式 默认为普通模式 
 defined('APP_MODE')     OR define('APP_MODE',      function_exists('saeAutoLoader') ? 'sae' : 'common');
@@ -266,18 +267,3 @@ function S($name,$value='',$options=null) {
         return $cache->set($name, $value, $expire);
     }
 }
-
-/**
- * 字符串命名风格转换
- * type 0 将Java风格转换为C的风格 1 将C风格转换为Java的风格
- * @param string $name 字符串
- * @param integer $type 转换类型
- * @return string
- */
-function parse_name($name, $type=0) {
-    if ($type) {
-        return ucfirst(preg_replace_callback('/_([a-zA-Z])/', function($match){ return strtoupper($match[1]);}, $name));
-    } else {
-        return strtolower(trim(preg_replace("/[A-Z]/", "_\\0", $name), "_"));
-    }
-}
diff --git a/library/think/app.php b/library/think/app.php
index abc7322d..c22e1856 100644
--- a/library/think/app.php
+++ b/library/think/app.php
@@ -32,7 +32,9 @@ class App {
         Cache::connect($config['cache']);
 
         // 加载框架底层语言包
-        is_file(THINK_PATH.'Lang/'.strtolower($config['default_lang']).EXT) AND Lang::set(include THINK_PATH.'Lang/'.strtolower($config['default_lang']).EXT);
+        if(is_file(THINK_PATH.'Lang/'.strtolower($config['default_lang']).EXT)){
+            Lang::set(include THINK_PATH.'Lang/'.strtolower($config['default_lang']).EXT);
+        }
 
         if(is_file(APP_PATH.'build.php')) { // 自动化创建脚本
             Create::build(include APP_PATH.'build.php');
@@ -85,7 +87,7 @@ class App {
             $action     =   ACTION_NAME . $config['action_suffix'];
         }
         if(!$instance) {
-            throw new Exception('[ ' . MODULE_NAME . '\\'.CONTROLLER_LAYER.'\\' . parse_name(CONTROLLER_NAME, 1) . ' ] not exists');
+            throw new Exception('[ ' . MODULE_NAME . '\\'.CONTROLLER_LAYER.'\\' . Loader::parseName(CONTROLLER_NAME, 1) . ' ] not exists');
         }
 
         try{
@@ -122,16 +124,20 @@ class App {
                         }elseif($param->isDefaultValueAvailable()){
                             $args[] = $param->getDefaultValue();
                         }else{
-                            E('_PARAM_ERROR_:' . $name);
+                            throw new Exception('_PARAM_ERROR_:' . $name);
                         }
                     }
                     array_walk_recursive($args,'Input::filterExp');
-                    $method->invokeArgs($instance, $args);
+                    $data   =   $method->invokeArgs($instance, $args);
                 }else{
-                    $method->invoke($instance);
+                    $data   =   $method->invoke($instance);
                 }
                 // 操作方法执行完成监听
                 Hook::listen('action_end', $call);
+                if(IS_API){
+                    // API接口返回数据
+                    self::returnData($data,$config['default_ajax_return']);
+                }
             }else{
                 // 操作方法不是Public 抛出异常
                 throw new \ReflectionException();
@@ -150,6 +156,44 @@ class App {
         return ;
     }
 
+    /**
+     * 返回API数据到客户端
+     * @access protected
+     * @param mixed $data 要返回的数据
+     * @param String $type 返回数据格式
+     * @return void
+     */
+    static public function returnData($data, $type='') {
+        $headers    =   [
+            'json'  =>  'application/json',
+            'xml'   =>  'text/xml',
+            'jsonp' =>  'application/javascript',
+            'script'=>  'application/javascript',
+            'text'  =>  'text/plain',
+        ];
+        $type       =   strtolower($type);
+        if(isset($headers[$type])){
+            header('Content-Type:'.$headers[$type].'; charset=utf-8');
+        }
+
+        switch ($type){
+            case 'json':
+                // 返回JSON数据格式到客户端 包含状态信息
+                $data   =   Transform::jsonEncode($data);
+                break;
+            case 'xml':
+                // 返回xml格式数据
+                $data   =   Transform::xmlEncode($data);
+                break;
+            case 'jsonp':
+                // 返回JSON数据格式到客户端 包含状态信息
+                $handler = isset($_GET[Config::get('var_jsonp_handler')]) ? $_GET[Config::get('var_jsonp_handler')] : Config::get('default_jsonp_handler');
+                $data   =   $handler . '(' . Transform::jsonEncode($data) . ');';
+                break;
+        }
+        exit($data);
+    }
+
     /**
      * 初始化模块
      * @access private
diff --git a/library/think/cache/driver/apc.php b/library/think/cache/driver/apc.php
index 9af3d6a1..6ab02eb6 100644
--- a/library/think/cache/driver/apc.php
+++ b/library/think/cache/driver/apc.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Apc缓存驱动
@@ -30,7 +31,7 @@ class Apc {
      */
     public function __construct($options=[]) {
         if(!function_exists('apc_cache_info')) {
-            E('_NOT_SUPPERT_:Apc');
+            throw new Exception('_NOT_SUPPERT_:Apc');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/cache/driver/memcache.php b/library/think/cache/driver/memcache.php
index 50375b68..93cebfd8 100644
--- a/library/think/cache/driver/memcache.php
+++ b/library/think/cache/driver/memcache.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Memcache缓存驱动
@@ -33,7 +34,7 @@ class Memcache {
      */
     public function __construct($options=[]) {
         if ( !extension_loaded('memcache') ) {
-            E('_NOT_SUPPERT_:memcache');
+            throw new Exception('_NOT_SUPPERT_:memcache');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/cache/driver/redis.php b/library/think/cache/driver/redis.php
index c56dda3a..5befede1 100644
--- a/library/think/cache/driver/redis.php
+++ b/library/think/cache/driver/redis.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Redis缓存驱动 
@@ -34,7 +35,7 @@ class Redis {
      */
     public function __construct($options=[]) {
         if ( !extension_loaded('redis') ) {
-            E('_NOT_SUPPERT_:redis');
+            throw new Exception('_NOT_SUPPERT_:redis');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/cache/driver/sqlite.php b/library/think/cache/driver/sqlite.php
index 8a733143..f9730ffa 100644
--- a/library/think/cache/driver/sqlite.php
+++ b/library/think/cache/driver/sqlite.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Sqlite缓存驱动
@@ -33,7 +34,7 @@ class Sqlite {
      */
     public function __construct($options=[]) {
         if ( !extension_loaded('sqlite') ) {
-            E('_NOT_SUPPERT_:sqlite');
+            throw new Exception('_NOT_SUPPERT_:sqlite');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/cache/driver/wincache.php b/library/think/cache/driver/wincache.php
index bf0a7cdf..11580175 100644
--- a/library/think/cache/driver/wincache.php
+++ b/library/think/cache/driver/wincache.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Wincache缓存驱动
@@ -30,7 +31,7 @@ class Wincache {
      */
     public function __construct($options=[]) {
         if ( !function_exists('wincache_ucache_info') ) {
-            E('_NOT_SUPPERT_:WinCache');
+            throw new Exception('_NOT_SUPPERT_:WinCache');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/cache/driver/xcache.php b/library/think/cache/driver/xcache.php
index 291ca738..85a940dc 100644
--- a/library/think/cache/driver/xcache.php
+++ b/library/think/cache/driver/xcache.php
@@ -10,6 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace think\cache\driver;
+use think\Exception;
 
 /**
  * Xcache缓存驱动
@@ -30,7 +31,7 @@ class Xcache {
      */
     public function __construct($options=[]) {
         if ( !function_exists('xcache_info') ) {
-            E('_NOT_SUPPERT_:Xcache');
+            throw new Exception('_NOT_SUPPERT_:Xcache');
         }
         if(!empty($options)) {
             $this->options      =   array_merge($this->options,$options);
diff --git a/library/think/controller.php b/library/think/controller.php
index 1bf83062..42c3f056 100644
--- a/library/think/controller.php
+++ b/library/think/controller.php
@@ -30,6 +30,7 @@ class Controller {
             $this->_initialize();
         }
         // 前置操作方法
+        // 支持 ['action1','action2'] 或者 ['action1'=>['only'=>'index'],'action2'=>'except'=>'login']
         $list     =   Config::get('before_action_list');
         if($list){
             foreach($list as $method=>$options){
@@ -100,50 +101,32 @@ class Controller {
         return $this->assign($name, $value);
     }
 
+    /**
+     * 返回API数据到客户端
+     * @access protected
+     * @param mixed $data 要返回的数据
+     * @param integer $code 返回的code
+     * @param mixed $msg 提示信息     
+     * @param string $type 返回数据格式
+     * @return void
+     */
+    protected function result($data,$code=0,$msg='',$type='') {
+        $result['code'] = $code;
+        $result['msg']  = $msg;
+        $result['time'] = NOW_TIME;
+        $result['data'] = $data;
+        app::returnData($result,$type);
+    }
+
     /**
      * Ajax方式返回数据到客户端
      * @access protected
      * @param mixed $data 要返回的数据
      * @param String $type AJAX返回数据格式
-     * @param mixed $fun 数据处理方法
      * @return void
      */
-    protected function ajaxReturn($data, $type='',$fun='') {
-        if(empty($type)) {
-            $type   = Config::get('default_ajax_return');
-        }
-        $headers    =   [
-            'json'  =>  'application/json',
-            'xml'   =>  'text/xml',
-            'jsonp' =>  'application/javascript',
-            'script'=>  'application/javascript',
-            'html'  =>  'text/html',
-            'text'  =>  'text/plain',
-        ];
-        $type       =   strtolower($type);
-        if(isset($headers[$type])){
-            header('Content-Type:'.$headers[$type].'; charset=utf-8');
-        }
-        if($fun && is_callable($fun)){
-            $data   =   call_user_func($fun,$data);
-        }else{
-            switch ($type){
-                case 'json':
-                    // 返回JSON数据格式到客户端 包含状态信息
-                    $data   =   Transform::jsonEncode($data);
-                    break;
-                case 'xml':
-                    // 返回xml格式数据
-                    $data   =   Transform::xmlEncode($data);
-                    break;
-                case 'jsonp':
-                    // 返回JSON数据格式到客户端 包含状态信息
-                    $handler = isset($_GET[Config::get('var_jsonp_handler')]) ? $_GET[Config::get('var_jsonp_handler')] : Config::get('default_jsonp_handler');
-                    $data   =   $handler . '(' . Transform::jsonEncode($data) . ');';  
-                    break;
-            }            
-        }
-        exit($data);
+    protected function ajaxReturn($data, $type='') {
+        app::returnData($data,$type);
     }
 
     /**
diff --git a/library/think/controller/rest.php b/library/think/controller/rest.php
index 59ebcfb4..0c01c96a 100644
--- a/library/think/controller/rest.php
+++ b/library/think/controller/rest.php
@@ -68,7 +68,7 @@ abstract class rest {
             $this->$fun();
         }else{
             // 抛出异常
-            E(L('_ERROR_ACTION_:').ACTION_NAME);
+            throw new \think\Exception(L('_ERROR_ACTION_:').ACTION_NAME);
         }
     }
 
diff --git a/library/think/db/driver.php b/library/think/db/driver.php
index a1ff36a7..0005674c 100644
--- a/library/think/db/driver.php
+++ b/library/think/db/driver.php
@@ -10,9 +10,10 @@
 // +----------------------------------------------------------------------
 
 namespace think\db;
-use think\config;
-use think\debug;
-use think\log;
+use think\Config;
+use think\Debug;
+use think\Log;
+use think\Exception;
 use PDO;
 
 abstract class Driver {
@@ -101,7 +102,7 @@ abstract class Driver {
                     Log::record($e->getMessage(),'ERR');
                     return $this->connect($autoConnection,$linkNum);
                 }elseif($config['debug']){
-                    E($e->getMessage());
+                    throw new Exception($e->getMessage());
                 }
             }
         }
@@ -161,15 +162,15 @@ abstract class Driver {
         }
         $this->bind =   [];
         try{
-	        $result =   $this->PDOStatement->execute();
-	        // 调试结束
-	        $this->debug(false);
-	        if ( false === $result ) {
-	            $this->error();
-	            return false;
-	        } else {
-	            return $this->getResult();
-	        }        	
+            $result =   $this->PDOStatement->execute();
+            // 调试结束
+            $this->debug(false);
+            if ( false === $result ) {
+                $this->error();
+                return false;
+            } else {
+                return $this->getResult();
+            }        	
         }catch (\PDOException $e) {
             $this->error();
             return false;
@@ -214,18 +215,18 @@ abstract class Driver {
         }
         $this->bind =   [];
         try{
-	        $result =   $this->PDOStatement->execute();
-	        $this->debug(false);
-	        if ( false === $result) {
-	            $this->error();
-	            return false;
-	        } else {
-	            $this->numRows = $this->PDOStatement->rowCount();
-	            if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
-	                $this->lastInsID = $this->_linkID->lastInsertId();
-	            }
-	            return $this->numRows;
-	        }        	
+            $result =   $this->PDOStatement->execute();
+            $this->debug(false);
+            if ( false === $result) {
+                $this->error();
+                return false;
+            } else {
+                $this->numRows = $this->PDOStatement->rowCount();
+                if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
+                    $this->lastInsID = $this->_linkID->lastInsertId();
+                }
+                return $this->numRows;
+            }        	
         }catch (\PDOException $e) {
             $this->error();
             return false;
@@ -341,7 +342,7 @@ abstract class Driver {
         // 记录错误日志
         Log::record($this->error,'ERR');
         if($this->config['debug']) {// 开启数据库调试模式
-            E($this->error);
+            throw new Exception($this->error);
         }else{
             return $this->error;
         }
@@ -505,10 +506,6 @@ abstract class Driver {
                     // 解析特殊条件表达式
                     $whereStr   .= $this->parseThinkWhere($key,$val);
                 }else{
-                    // 查询字段的安全过滤
-                    // if(!preg_match('/^[A-Z_\|\&\-.a-z0-9\(\)\,]+$/',trim($key))){
-                    //     E(L('_EXPRESS_ERROR_').':'.$key);
-                    // }
                     // 多条件支持
                     $multi  = is_array($val) &&  isset($val['_multi']);
                     $key    = trim($key);
@@ -578,7 +575,7 @@ abstract class Driver {
                     $data = is_string($val[1])? explode(',',$val[1]):$val[1];
                     $whereStr .=  $key.' '.$this->exp[$exp].' '.$this->parseValue($data[0]).' AND '.$this->parseValue($data[1]);
                 }else{
-                    E(L('_EXPRESS_ERROR_').':'.$val[0]);
+                    throw new Exception(L('_EXPRESS_ERROR_').':'.$val[0]);
                 }
             }else {
                 $count = count($val);
diff --git a/library/think/db/driver/mongo.php b/library/think/db/driver/mongo.php
index 32c69281..59756bce 100644
--- a/library/think/db/driver/mongo.php
+++ b/library/think/db/driver/mongo.php
@@ -11,7 +11,7 @@
 
 namespace think\db\driver;
 use think\db\Driver;
-
+use think\Exception;
 /**
  * Mongo数据库驱动
  */
@@ -31,7 +31,7 @@ class Mongo extends Driver {
      */
     public function __construct($config=''){
         if ( !class_exists('mongoClient') ) {
-            E(L('_NOT_SUPPERT_').':Mongo');
+            throw new Exception(L('_NOT_SUPPERT_').':Mongo');
         }
         if(!empty($config)) {
             $this->config           =   array_merge($this->config,$config);
@@ -52,7 +52,7 @@ class Mongo extends Driver {
             try{
                 $this->linkID[$linkNum] = new \mongoClient( $host,$this->config['params']);
             }catch (\MongoConnectionException $e){
-                E($e->getmessage());
+                throw new Exception($e->getmessage());
             }
         }
         return $this->linkID[$linkNum];
@@ -86,8 +86,8 @@ class Mongo extends Driver {
                 $this->debug(false);
                 $this->_collectionName  = $collection; // 记录当前Collection名称
             }
-        }catch (MongoException $e){
-            E($e->getMessage());
+        }catch (\MongoException $e){
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -112,7 +112,7 @@ class Mongo extends Driver {
         $result   = $this->_mongo->command($command);
         $this->debug(false);
         if(!$result['ok']) {
-            E($result['errmsg']);
+            throw new Exception($result['errmsg']);
         }
         return $result;
     }
@@ -133,7 +133,7 @@ class Mongo extends Driver {
         if($result['ok']) {
             return $result['retval'];
         }else{
-            E($result['errmsg']);
+            throw new Exception($result['errmsg']);
         }
     }
 
@@ -194,7 +194,7 @@ class Mongo extends Driver {
             }
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -217,7 +217,7 @@ class Mongo extends Driver {
             $this->debug(false);
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -236,7 +236,7 @@ class Mongo extends Driver {
             $result   =  $this->_collection->find([],[$pk=>1])->sort([$pk=>-1])->limit(1);
             $this->debug(false);
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
         $data = $result->getNext();
         return isset($data[$pk])?$data[$pk]+1:1;
@@ -273,7 +273,7 @@ class Mongo extends Driver {
             $this->debug(false);
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -299,7 +299,7 @@ class Mongo extends Driver {
             $this->debug(false);
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -324,7 +324,7 @@ class Mongo extends Driver {
             $this->debug(false);
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -398,7 +398,7 @@ class Mongo extends Driver {
             }
             return $resultSet;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -439,7 +439,7 @@ class Mongo extends Driver {
             }
             return $result;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -467,7 +467,7 @@ class Mongo extends Driver {
             $this->debug(false);
             return $count;
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
     }
 
@@ -493,7 +493,7 @@ class Mongo extends Driver {
             $result   =  $this->_collection->findOne();
             $this->debug(false);
         } catch (\MongoCursorException $e) {
-            E($e->getMessage());
+            throw new Exception($e->getMessage());
         }
         if($result) { // 存在数据则分析字段
             $info =  [];
@@ -631,7 +631,7 @@ class Mongo extends Driver {
             }else{
                 // 查询字段的安全过滤
                 if(!preg_match('/^[A-Z_\|\&\-.a-z0-9]+$/',trim($key))){
-                    E(L('_ERROR_QUERY_').':'.$key);
+                    throw new Exception(L('_ERROR_QUERY_').':'.$key);
                 }
                 $key = trim($key);
                 if(strpos($key,'|')) {
diff --git a/library/think/db/driver/oracle.php b/library/think/db/driver/oracle.php
index 53c25df9..3561d627 100644
--- a/library/think/db/driver/oracle.php
+++ b/library/think/db/driver/oracle.php
@@ -59,19 +59,25 @@ class Oracle extends Driver{
         $this->debug(true);
         $this->PDOStatement	=	$this->_linkID->prepare($str);
         if(false === $this->PDOStatement) {
-            E($this->error());
-        }
-        $result	=	$this->PDOStatement->execute($bind);
-        $this->debug(false);
-        if ( false === $result) {
             $this->error();
             return false;
-        } else {
-            $this->numRows = $this->PDOStatement->rowCount();
-            if($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
-                $this->lastInsID = $this->_linkID->lastInsertId();
+        }
+        try{
+            $result	=	$this->PDOStatement->execute($bind);
+            $this->debug(false);
+            if ( false === $result) {
+                $this->error();
+                return false;
+            } else {
+                $this->numRows = $this->PDOStatement->rowCount();
+                if($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
+                    $this->lastInsID = $this->_linkID->lastInsertId();
+                }
+                return $this->numRows;
             }
-            return $this->numRows;
+        }catch (\PDOException $e) {
+            $this->error();
+            return false;
         }
     }
 
@@ -129,7 +135,7 @@ class Oracle extends Driver{
      * @access public
      * @return string
      */
-	public function parseLimit($limit) {
+    public function parseLimit($limit) {
         $limitStr    = '';
         if(!empty($limit)) {
             $limit	=	explode(',',$limit);
diff --git a/library/think/db/lite.php b/library/think/db/lite.php
index e3117ebf..d48082ad 100644
--- a/library/think/db/lite.php
+++ b/library/think/db/lite.php
@@ -90,11 +90,11 @@ class Lite {
             if(empty($config))  $config =   $this->config;
             try{
                 if(empty($config['dsn'])) {
-                    E('Think/Db/Lite 必须设置 dsn参数');
+                    throw new Exception('Think/Db/Lite 必须设置 dsn参数');
                 }
                 $this->linkID[$linkNum] = new PDO( $config['dsn'], $config['username'], $config['password'],$config['params']);
             }catch (\PDOException $e) {
-                E($e->getMessage());
+                throw new Exception($e->getMessage());
             }
         }
         return $this->linkID[$linkNum];
@@ -128,8 +128,10 @@ class Lite {
         // 调试开始
         $this->debug(true);
         $this->PDOStatement = $this->_linkID->prepare($str);
-        if(false === $this->PDOStatement)
-            E($this->error());
+        if(false === $this->PDOStatement){
+            $this->error();
+            return false;
+        }
         foreach ($bind as $key => $val) {
             if(is_array($val)){
                 $this->PDOStatement->bindValue($key, $val[0], $val[1]);
@@ -137,14 +139,19 @@ class Lite {
                 $this->PDOStatement->bindValue($key, $val);
             }
         }
-        $result =   $this->PDOStatement->execute();
-        // 调试结束
-        $this->debug(false);
-        if ( false === $result ) {
+        try{
+            $result =   $this->PDOStatement->execute();
+            // 调试结束
+            $this->debug(false);
+            if ( false === $result ) {
+                $this->error();
+                return false;
+            } else {
+                return $this->getResult();
+            }
+        }catch (\PDOException $e) {
             $this->error();
             return false;
-        } else {
-            return $this->getResult();
         }
     }
 
@@ -168,8 +175,9 @@ class Lite {
         // 记录开始执行时间
         $this->debug(true);
         $this->PDOStatement =   $this->_linkID->prepare($str);
-        if(false === $this->PDOStatement) {
-            E($this->error());
+        if(false === $this->PDOStatement){
+            $this->error();
+            return false;
         }
         foreach ($bind as $key => $val) {
             if(is_array($val)){
@@ -178,17 +186,22 @@ class Lite {
                 $this->PDOStatement->bindValue($key, $val);
             }
         }
-        $result =   $this->PDOStatement->execute();
-        $this->debug(false);
-        if ( false === $result) {
+        try{
+            $result =   $this->PDOStatement->execute();
+            $this->debug(false);
+            if ( false === $result) {
+                $this->error();
+                return false;
+            } else {
+                $this->numRows = $this->PDOStatement->rowCount();
+                if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
+                    $this->lastInsID = $this->_linkID->lastInsertId();
+                }
+                return $this->numRows;
+            }
+        }catch (\PDOException $e) {
             $this->error();
             return false;
-        } else {
-            $this->numRows = $this->PDOStatement->rowCount();
-            if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
-                $this->lastInsID = $this->_linkID->lastInsertId();
-            }
-            return $this->numRows;
         }
     }
 
@@ -300,7 +313,7 @@ class Lite {
         // 记录错误日志
         Log::record($this->error,'ERR');
         if($this->config['debug']) {// 开启数据库调试模式
-            E($this->error);
+            throw new Exception($this->error);
         }else{
             return $this->error;
         }
diff --git a/library/think/error.php b/library/think/error.php
index 0c93ce65..5cd27dd9 100644
--- a/library/think/error.php
+++ b/library/think/error.php
@@ -18,19 +18,13 @@ class Error {
      * @param mixed $e 异常对象
      */
     static public function appException($e) {
-        $error = [];
-        $error['message'] = $e->getMessage();
-        $trace = $e->getTrace();
-        if('E' == $trace[0]['function']) {
-            $error['file'] = $trace[0]['file'];
-            $error['line'] = $trace[0]['line'];
-        }else{
-            $error['file'] = $e->getFile();
-            $error['line'] = $e->getLine();
-        }
-        $error['trace'] = $e->getTraceAsString();
+        $error['message']   =   $e->getMessage();
+        $error['file']      =   $e->getFile();
+        $error['line']      =   $e->getLine();
+        $error['trace']     =   $e->getTraceAsString();
+        $error['code']      =   $e->getCode();
         // 记录异常日志
-        Log::record($error['message'],'ERR');        
+        Log::record($error['message'],'ERR');
         // 发送404信息
         header('HTTP/1.1 404 Not Found');
         header('Status:404 Not Found');
@@ -50,10 +44,6 @@ class Error {
     static public function appError($errno, $errstr, $errfile, $errline) {
         $errorStr = "[{$errno}] {$errstr} {$errfile} 第 {$errline} 行.";
         switch ($errno) {
-            case E_ERROR:
-            case E_PARSE:
-            case E_CORE_ERROR:
-            case E_COMPILE_ERROR:
             case E_USER_ERROR:
                 Log::record($errorStr, 'ERROR');
                 self::halt($errorStr);
@@ -94,22 +84,32 @@ class Error {
      * @return void
      */
     static public function halt($error) {
-        IS_CLI && exit(is_array($error)?$error['message']:$error);
+        $message    =   is_array($error)? $error['message'] : $error;
+        $code       =   is_array($error)? $error['code'] : 1;
+        if(IS_CLI){
+            exit($message);
+        }elseif(IS_API){
+            // API接口
+            $data['code']   =   $code;
+            $data['msg']    =   $message;
+            $data['time']   =   NOW_TIME;
+            app::returnData($data);
+        }
         $e = [];
         if (APP_DEBUG) {
             //调试模式下输出错误信息
             if (!is_array($error)) {
-                $trace        = debug_backtrace();
-                $e['message'] = $error;
-                $e['file']    = $trace[0]['file'];
-                $e['line']    = $trace[0]['line'];
+                $trace          =   debug_backtrace();
+                $e['message']   =   $error;
+                $e['file']      =   $trace[0]['file'];
+                $e['line']      =   $trace[0]['line'];
                 ob_start();
                 debug_print_backtrace();
-                $e['trace'] = ob_get_clean();
+                $e['trace']     =   ob_get_clean();
             } else {
                 $e = $error;
             }
-        } else {
+        }else {
             //否则定向到错误页面
             $error_page = Config::get('error_page');
             if (!empty($error_page)) {
diff --git a/library/think/loader.php b/library/think/loader.php
index d9b0af17..d19d451e 100644
--- a/library/think/loader.php
+++ b/library/think/loader.php
@@ -139,7 +139,7 @@ class Loader {
         }else{
             $module = MODULE_NAME;
         }
-        $class = $module . '\\' . $layer . '\\' . parse_name($name, 1);
+        $class = $module . '\\' . $layer . '\\' . self::parseName($name, 1);
         if(class_exists($class)) {
             $model = new $class($name);
         }else {
@@ -166,7 +166,7 @@ class Loader {
         }else{
             $module = MODULE_NAME;
         }
-        $class = $module . '\\' . $layer . '\\' . parse_name($name, 1) ;
+        $class = $module . '\\' . $layer . '\\' . self::parseName($name, 1) ;
         if(class_exists($class)) {
             $action = new $class;
             $_instance[$name . $layer] = $action;
@@ -233,4 +233,19 @@ class Loader {
         }
         return $_instance[$identify];
     }
+
+    /**
+     * 字符串命名风格转换
+     * type 0 将Java风格转换为C的风格 1 将C风格转换为Java的风格
+     * @param string $name 字符串
+     * @param integer $type 转换类型
+     * @return string
+     */
+    static public function parseName($name, $type=0) {
+        if ($type) {
+            return ucfirst(preg_replace_callback('/_([a-zA-Z])/', function($match){ return strtoupper($match[1]);}, $name));
+        } else {
+            return strtolower(trim(preg_replace("/[A-Z]/", "_\\0", $name), "_"));
+        }
+    }
 }
diff --git a/library/think/model.php b/library/think/model.php
index f55a0ff5..f086a26d 100644
--- a/library/think/model.php
+++ b/library/think/model.php
@@ -751,7 +751,7 @@ class Model {
             if(!empty($this->tableName)) {
                 $tableName .= $this->tableName;
             }else{
-                $tableName .= parse_name($this->name);
+                $tableName .= Loader::parseName($this->name);
             }
             $this->trueTableName    =   strtolower($tableName);
         }
@@ -919,7 +919,7 @@ class Model {
         }elseif(is_string($data)){
             parse_str($data,$data);
         }elseif(!is_array($data)){
-            E(Lang::get('_DATA_TYPE_INVALID_'));
+            throw new Exception(Lang::get('_DATA_TYPE_INVALID_'));
         }
         $this->data = $data;
         return $this;
@@ -976,7 +976,7 @@ class Model {
                 $options =  $union;
             }
         }else{
-            E(Lang::get('_DATA_TYPE_INVALID_'));
+            throw new Exception(Lang::get('_DATA_TYPE_INVALID_'));
         }
         $this->options['union'][]  =   $options;
         return $this;
diff --git a/library/think/model/mongo_model.php b/library/think/model/mongo_model.php
index 41d52e39..cecebb60 100644
--- a/library/think/model/mongo_model.php
+++ b/library/think/model/mongo_model.php
@@ -9,6 +9,7 @@
 // | Author: liu21st <liu21st@gmail.com>
 // +----------------------------------------------------------------------
 namespace think\model;
+use think\Loader;
 
 /**
  * MongoModel模型类
@@ -39,16 +40,16 @@ class MongoModel extends \Think\Model{
     public function __call($method,$args) {
         if(strtolower(substr($method,0,5))=='getby') {
             // 根据某个字段获取记录
-            $field   =   parse_name(substr($method,5));
+            $field   =   Loader::parseName(substr($method,5));
             $where[$field] =$args[0];
             return $this->where($where)->find();
         }elseif(strtolower(substr($method,0,10))=='getfieldby') {
             // 根据某个字段获取记录的某个值
-            $name   =   parse_name(substr($method,10));
+            $name   =   Loader::parseName(substr($method,10));
             $where[$name] =$args[0];
             return $this->where($where)->getField($args[1]);
         }else{
-            throw_exception(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));
+            throw new \think\Exception(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));
             return;
         }
     }
@@ -266,7 +267,7 @@ class MongoModel extends \Think\Model{
             if(!empty($this->tableName)) {
                 $tableName .= $this->tableName;
             }else{
-                $tableName .= parse_name($this->name);
+                $tableName .= Loader::parseName($this->name);
             }
             $this->trueTableName    =   strtolower($tableName);
         }
diff --git a/library/think/url.php b/library/think/url.php
index df4dbfac..8c6af373 100644
--- a/library/think/url.php
+++ b/library/think/url.php
@@ -15,7 +15,7 @@ class Url {
 
     /**
      * URL组装 支持不同URL模式
-     * @param string $url URL表达式，格式：'[分组/模块/操作#锚点@域名]?参数1=值1&参数2=值2...'
+     * @param string $url URL表达式，格式：'[模块/控制器/操作#锚点@域名]?参数1=值1&参数2=值2...'
      * @param string|array $vars 传入的参数，支持数组和字符串
      * @param string $suffix 伪静态后缀，默认为true表示获取配置值
      * @param boolean $domain 是否显示域名
@@ -24,31 +24,31 @@ class Url {
     static public function build($url='',$vars='',$suffix=true,$domain=false) {
         $config     =   Config::get();
         // 解析URL
-        $info   =  parse_url($url);
-        $url    =  !empty($info['path'])?$info['path']:ACTION_NAME;
+        $info       =   parse_url($url);
+        $url        =   !empty($info['path'])?$info['path']:ACTION_NAME;
         if(isset($info['fragment'])) { // 解析锚点
             $anchor =   $info['fragment'];
             if(false !== strpos($anchor,'?')) { // 解析参数
-                list($anchor,$info['query']) = explode('?',$anchor,2);
+                list($anchor,$info['query']) =  explode('?',$anchor,2);
             }        
             if(false !== strpos($anchor,'@')) { // 解析域名
-                list($anchor,$host)    =   explode('@',$anchor, 2);
+                list($anchor,$host)         =   explode('@',$anchor, 2);
             }
         }elseif(false !== strpos($url,'@')) { // 解析域名
             list($url,$host)    =   explode('@',$info['path'], 2);
         }
         // 解析子域名
         if(isset($host)) {
-            $domain = $host.(strpos($host,'.')?'':strstr($_SERVER['HTTP_HOST'],'.'));
+            $domain =   $host.(strpos($host,'.')?'':strstr($_SERVER['HTTP_HOST'],'.'));
         }elseif($domain===true){
             $domain = $_SERVER['HTTP_HOST'];
             if($config['app_sub_domain_deplay'] ) { // 开启子域名部署
-                $domain = $domain=='localhost'?'localhost':'www'.strstr($_SERVER['HTTP_HOST'],'.');
+                $domain = $domain == 'localhost' ? 'localhost' : 'www'.strstr($_SERVER['HTTP_HOST'],'.');
                 // '子域名'=>array('项目[/分组]');
                 foreach ($config['app_sub_domain_rules'] as $key => $rule) {
                     if(false === strpos($key,'*') && 0=== strpos($url,$rule[0])) {
-                        $domain = $key.strstr($domain,'.'); // 生成对应子域名
-                        $url    =  substr_replace($url,'',0,strlen($rule[0]));
+                        $domain =   $key.strstr($domain,'.'); // 生成对应子域名
+                        $url    =   substr_replace($url,'',0,strlen($rule[0]));
                         break;
                     }
                 }
@@ -79,16 +79,16 @@ class Url {
                 if('/' != $depr) { // 安全替换
                     $url    =   str_replace('/',$depr,$url);
                 }
-                // 解析分组、模块和操作
+                // 解析模块、控制器和操作
                 $url        =   trim($url,$depr);
                 $path       =   explode($depr,$url);
                 $var        =   [];
-                $var[VAR_ACTION]       =   !empty($path)?array_pop($path):ACTION_NAME;
+                $var[VAR_ACTION]       =   !empty($path)? array_pop($path) : ACTION_NAME;
                 if(!defined('BIND_CONTROLLER')){
-                    $var[VAR_CONTROLLER]       =   !empty($path)?array_pop($path):CONTROLLER_NAME;
+                    $var[VAR_CONTROLLER]       =   !empty($path)? array_pop($path) : CONTROLLER_NAME;
                 }
                 if(!defined('BIND_MODULE')){
-                    $var[VAR_MODULE]    =   !empty($path)?array_pop($path):MODULE_NAME;
+                    $var[VAR_MODULE]    =   !empty($path)? array_pop($path) : MODULE_NAME;
                 }
             }
         }
@@ -124,7 +124,7 @@ class Url {
             $url  .= '#'.$anchor;
         }
         if($domain) {
-            $url   =  (self::is_ssl()?'https://':'http://').$domain.$url;
+            $url   =  (self::is_ssl()? 'https://' : 'http://' ).$domain.$url;
         }
         return $url;
     }
diff --git a/traits/think/model/extend.php b/traits/think/model/extend.php
index bcf021e0..ddbe48e9 100644
--- a/traits/think/model/extend.php
+++ b/traits/think/model/extend.php
@@ -10,7 +10,7 @@
 // +----------------------------------------------------------------------
 
 namespace traits\think\model;
-
+use think\Loader;
 trait Extend {
     
     protected $partition    =   [];
@@ -29,18 +29,18 @@ trait Extend {
             return $this->getField(strtoupper($method).'('.$field.') AS tp_'.$method);
         }elseif(strtolower(substr($method,0,5))=='getby') {
             // 根据某个字段获取记录
-            $field   =   parse_name(substr($method,5));
+            $field   =   Loader::parseName(substr($method,5));
             $where[$field] =  $args[0];
             return $this->where($where)->find();
         }elseif(strtolower(substr($method,0,10))=='getfieldby') {
             // 根据某个字段获取记录的某个值
-            $name   =   parse_name(substr($method,10));
+            $name   =   Loader::parseName(substr($method,10));
             $where[$name] =$args[0];
             return $this->where($where)->getField($args[1]);
         }elseif(isset($this->scope[$method])){// 命名范围的单独调用支持
             return $this->scope($method,$args[0]);
         }else{
-            E(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));
+            throw new \think\Exception(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));
             return;
         }
     }