The programming model is elegant, and the constructor-based style means you don't have to include a constructor without arguments.

编程模型是优雅的，基于构造函数的风格意味着您无需包括无参构造函数。

youdao

While using this approach we have to remember that this mechanism supports only accessor-based injection, constructor argument based injection is not supported.

在使用该方法时，我们必须记住该机制只支持访问器注入，不支持基于构造函数参数的注入。

youdao

For example, you could have multiple occurrences of the tag based on the CacheCommand constructor for your service.

例如，以您的服务的CacheCommand构造函数为基础，可能会出现大量的标签。

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