前面我们做了一个简单的Hello world, 仅仅包含了屏幕的输出, 其中, 我们使用了两种模式, 一种有HTMLB, 另外一种是纯HTML+ABAP.

在这节我们会简单的处理用户输入输出, 同样使用两种模式完成.

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开始我们的第一个BSP application, 当然, 还是从Hello World开始, 逐渐熟悉BSP的语法以及应用:

1． 进入SE80

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OK， 现在我们可以开始写些BSP的程序了，不过在此之前， 最好还是准备一些工具。

1. 开发工具： SE80

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MVC in BSP application

  1. Properties     View: Created as subobject of a BSP application, via controller call, it’s a HTML page or page with BSP extension     Model: Created as a class, reference or derived from CL_BSP_MODEL         Provide: a. The data used for views with relevant type and Dictionary information                     b. Input conversion                     c. Process input errors     Controller: With the file extension .do, is a subclass of CL_BSP_CONTROLLER2

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BSP Extension

1. Main concept:

Definition:

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Layout and language

    1. Including MIME in BSP application         Definition: MIME for Multipurpose Internet Mail Extension         Storage: MIME objects stored in database table SMIM*         Steps:            1). Open you BSP application with SE80            2). In the context menu of your project, choose Create–>MIME objects–>Import

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Stateful and Stateless BSP Applications

    1. Stateful programming of a BSP application means that the application context is retained after the response and is available when you continue to work with the application.

       Advantage:  Easy to program        Disadvantage: Waste resources

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Global Objects:

Processing user input:

Statements: <Form>…….</Form>

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Layouts of a BSPs.

BSP structure :

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