优化

src/Tools/Exporter.php

@@ -24,26 +24,26 @@ class Exporter
     /**
      * 以字节流的形式下载
      */
-    CONST DOWNLOAD_TYPE_STREAM = 1;
+    const DOWNLOAD_TYPE_STREAM = 1;
 
     /**
      * 保存文件，并返回文件的路径
      */
-    CONST DOWNLOAD_TYPE_RETURN_FILE_PATH = 2;
+    const DOWNLOAD_TYPE_RETURN_FILE_PATH = 2;
 
     /**
      * 保存文件，直接输出下载
      */
-    CONST DOWNLOAD_TYPE_SAVE_AND_DOWNLOAD = 3;
+    const DOWNLOAD_TYPE_SAVE_AND_DOWNLOAD = 3;
 
     /**
      * 保存文件，返回文件绝对路径
      */
-    CONST DOWNLOAD_TYPE_RETURN_ABSOLUTE_PATH = 4;
+    const DOWNLOAD_TYPE_RETURN_ABSOLUTE_PATH = 4;
 
-    CONST EXPORTER_TYPE_CSV = 1;
-    CONST EXPORTER_TYPE_XLS = 2;
-    CONST EXPORTER_TYPE_XLSX = 3;
+    const EXPORTER_TYPE_CSV = 1;
+    const EXPORTER_TYPE_XLS = 2;
+    const EXPORTER_TYPE_XLSX = 3;
     /**
      * @var ConfigInterface
      */