修改excel导入空判断和数值判断逻辑

src/Tools/ExcelImporter.php

@@ -121,14 +121,15 @@ class ExcelImporter
      * @param $errorCount
      * @throws \PhpOffice\PhpSpreadsheet\Exception
      */
-    public function checkRequire($requires, $errorCount)
+    public function checkRequire($requires, &$errorCount)
     {
         foreach ($requires as $k => $v) {
-            if ($v === '') {
+            if (!$v || $v === '') {
                 $this->setErrorMessage($k . "不能为空", $errorCount);
-                continue;
+                return false;
             }
         }
+        return true;
     }
 
     /**
@@ -142,9 +143,10 @@ class ExcelImporter
         foreach ($data as $k => $v) {
             if (!is_numeric($v)) {
                 $this->setErrorMessage("{$k}只能是数字", $errorCount);
-                continue;
+                return false;
             }
         }
+        return true;
     }
 
     /**