添加提示

@@ -143,11 +143,11 @@ class PDOConnection extends Root
             $_serverConfig = $server->getServerConfig('database', $this->_database);
             $_dbConfig = $server->getServerConfig('mysql');
             if (!isset($_serverConfig[$modality]) || !in_array($modality, array('write', 'read'))) {
-                throw new DebugException('MySQL Not Modality ' . $modality);
+                throw new DebugException('MySQL db:'.$this->_database.' Not Modality ' . $modality);
             }
             $_server = $server->getServerMap($_serverConfig[$modality], Server::SERVER_SELECT_MODEL_RAND);
             if (empty($_server)) {
-                throw new DebugException('Db Server is null.');
+                throw new DebugException('Db:'.$this->_database.' Server is null.');
             }
             $charset = isset($_dbConfig['charset']) ? $_dbConfig['charset'] : 'UTF8';
             #如果设置了 dbname 使用 配置的
@@ -158,7 +158,12 @@ class PDOConnection extends Root
                 \PDO::ATTR_PERSISTENT => isset($_dbConfig['persistent']) ? $_dbConfig['persistent'] : false,
                 \PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES " . $charset
             );
+            try {
                 $_connection = new \PDO($dsn, $_serverConfig['username'], $_serverConfig['passwd'], $options);
+            } catch (\Exception $e) {
+                throw new DebugException($dsn . ' error ' . $e->getMessage());
+            }
+            
             foreach ($this->_attribute as $key => $val) {
                 $_connection->setAttribute($key, $val);
             }