在这样的案例中，目标动作代码不能放置在视图中。
In such a case, the target action code cannot be placed in a view.
HL7定义了若干动作类和动作代码，包括内部代码和外部代码。
HL7 defined many act classes and act codes, including internal code and external code.
在本例中，数据在RequestScope中设置为调用动作代码的请求属性。
In this example, the data is set in the RequestScope as a request attribute in the action code that is invoked.
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