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如何在Java中导航/处理原子条目链接？

[英]How to navigate / process atom entry links in Java?

原文 2013-04-01 20:02:10 1 1 java/ parsing/ atom-feed

I need to parse an atom document, where entry links point to other related entries. 我需要解析一个原子文档，其中的条目链接指向其他相关条目。 For example, an entry contains information about an electric meter, and a link points to another entry which contains readings made by that meter. 例如，一个条目包含有关电表的信息，而链接指向另一个包含该电表读数的条目。 Exact structure is: 确切的结构是：

https://collaborate.nist.gov/twiki-sggrid/pub/SmartGrid/GreenButtonSDK/ESPISchemaOverview.png https://collaborate.nist.gov/twiki-sggrid/pub/SmartGrid/GreenButtonSDK/ESPISchemaOverview.png

Can anyone give me a tip/starting point? 谁能给我一个提示/起点？ I know basics about XML parsing in Java but navigating between entries using links just boggles my mind. 我知道有关Java中XML解析的基础知识，但是使用链接在条目之间导航只会让我感到困惑。

1 个解决方案

Using something like ROME to parse the feed would give you the feed as a collection of Entry objects. 使用ROME之类的内容来解析提要将使您将提要作为Entry对象的集合。 Each Entry has a collection of Link s, including possible a link to itself ( rel='self' ) to assign a permalink. 每个Entry都有Link的集合，包括可能指向其自身的链接（ rel='self' ），以分配一个永久链接。

Navigating between entries may well involve iterating over all the entries to find the target, or you could build your own Map . 在条目之间导航很可能涉及遍历所有条目以找到目标，或者您可以构建自己的Map 。 This doesn't take care of the logic of making the appropriate connections due to the links but it does get you the data in terms of identifiers and links. 由于链接的缘故，这并不需要考虑进行适当连接的逻辑，但是它确实会根据标识符和链接为您获取数据。