添加DB异常和Error异常

library/think/exception/DbException.php

@@ -0,0 +1,35 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http://zjzit.cn>
+// +----------------------------------------------------------------------
+
+namespace think\exception;
+
+use think\Exception;
+
+/**
+ * Database相关异常处理类
+ */
+class DbException extends Exception 
+{
+    public function __construct($message, $code, $db, $config)
+    {
+        $this->message  = $message;
+        $this->code     = $code;
+
+        $error = explode(':', $db->getError());
+        $this->setData('Database Status', [
+            'Error Code'    => $error[0],
+            'Error Message' => $error[1],
+            'Error SQL'     => $db->getLastSql()
+        ]);
+
+        $this->setData('Database Config', $config);
+    }
+}