我认为您的项目配置错误. META-INF文件夹应保留在Web Maven项目的src/main/webapp中的src/main/resources和WEB-INF文件夹中.这是一个示例，其中我通过网络api进行了一些CRUD.

I think your project is misconfigured. META-INF folder should stay in src/main/resources and WEB-INF folder in src/main/webapp of your web maven project. Here is an example where I do some CRUD over web api.