在这个示例中，因为希望对单一交易的状态执行只读查询，显然应该使用GET方法，使用的URI模式见清单4。

In this case, because you want to perform a read-only lookup of the status of a single transaction, the GET method is an obvious fit using the URI pattern, as shown in Listing 4.

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设计重新带回了单一JSP(模式1方法：一堆HTML、CSS代码、图片和脚本代码)，这是一种反模式，极难阅读和维护(请参阅参考资料)。

The design reintroduces monolithic JSPs (the Model 1 approach: a sea of HTML, CSS code, images, and scripting code), an antipattern that is extremely difficult to read and maintain (see Resources).

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有几种方法能够扩展模式以根据需要包含新元素：本文介绍的6种策略提供扩展单一名称空间模式的技术。

Several approaches can extend schemas to include new elements as needed: The six strategies described in this article provide techniques to extend single-namespace schemas.

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