check if paoperty file is directory

report/src/main/java/com/uas/report/DynamicProperties.java

@@ -133,6 +133,9 @@ public class DynamicProperties {
                     FileUtils.copy(defaultPropertyFile, propertyFile);
                 }
             }
+            if(propertyFile.isDirectory()){
+                throw new IOException("并非文件：" + PROPERTY_FILE_NAME);
+            }
             long lastModified = propertyFile.lastModified();
             // 如果配置文件有修改，就重新加载
             if (propertyFileLastModified >= lastModified) {