Presentation Logic Layer 展现逻辑层 ; 表现逻辑层
The Presentation layer and the Business Logic layer can be on two different machines and can be offered by different J2EE platform providers.
表示层和业务逻辑层可以位于不同机器上，也可以由不同的 J2EE 平台供应商提供。
MVC developers can frequently "cheat" by including business logic code directly in the presentation layer, instead of the service layer where it belongs.
MVC 开发人员通常直接在表示层中包含业务逻辑代码进行 “欺骗”（而不是包含到它所属的服务层中）。
It accepts the request from the browser, requests the service from the business logic layer, generates the presentation, and responds to the browser.
它从浏览器接受请求，从业务逻辑层请求服务，生成表示并对浏览器做出响应。
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