使用 Java 从 Google 日历服务读取 XML 响应
我想使用作为 Google 日历 API 的一部分提供的新查询繁忙时间 API 来检索用户的繁忙时间。结果是一个只读提要，其中包含用户的忙碌时间块，如下所示：
<entry xmlns="http://www.w3.org/2005/Atom" xmlns:gCal="http://schemas.google.com/gCal/2005"
xmlns:gd="http://schemas.google.com/g/2005"
gd:kind='calendar#freebusy' >
<id>http://www.google.com/calendar/feeds/default/freebusy/busy-times/liz%40example.com</id>
<updated>2010-03-13T00:00:00.000Z</udpated>
<link rel='self'
href='https://www.google.com/calendar/feeds/default/freebusy/busy-times/liz%40example.com' />
<author>
<name>[email protected]</name>
<email>[email protected]</email>
</author>
<gCal:timeRange>
<gd:when startTime='2010-03-13T00:00:00Z' endTime='2010-03-14T00:00:00Z'/>
<gCal:timeRange>
<gCal:busy>
<gd:when startTime='2010-03-13T14:00Z' endTime='2010-03-13T14:30Z'/>
</gCal:busy>
<gCal:busy>
<gd:when startTime='2010-03-13T16:00Z' endTime='2010-03-13T16:30Z'/>
</gCal:busy>
</entry>
基于上述返回提要，我如何使用 Calendar Data API for Java 来获取每个忙碌时间块，以便我可以读取并用它们做一些事情，比如打印到终端？此返回的提要类型是什么，CalendarEventFeed、CalendarFeed...？
CalendarService service = new CalendarService("myapp-v1");
service.setOAuthCredentials(oauthParameters, new OAuthHmacSha1Signer());
URL feedUrl = new URL(METAFEED_URL_BASE+FREEBUSY_FEED_URL_SUFFIX+user.username());
CalendarEventFeed resultFeed = service.getFeed(feedUrl, CalendarEventFeed.class);
I want to retrieve a user's busy times using the new querying busy times API provided as part of the Google calendar API. The result is a read-only feed containing the user's blocks of busy-times that looks like the following:
<entry xmlns="http://www.w3.org/2005/Atom" xmlns:gCal="http://schemas.google.com/gCal/2005"
xmlns:gd="http://schemas.google.com/g/2005"
gd:kind='calendar#freebusy' >
<id>http://www.google.com/calendar/feeds/default/freebusy/busy-times/liz%40example.com</id>
<updated>2010-03-13T00:00:00.000Z</udpated>
<link rel='self'
href='https://www.google.com/calendar/feeds/default/freebusy/busy-times/liz%40example.com' />
<author>
<name>[email protected]</name>
<email>[email protected]</email>
</author>
<gCal:timeRange>
<gd:when startTime='2010-03-13T00:00:00Z' endTime='2010-03-14T00:00:00Z'/>
<gCal:timeRange>
<gCal:busy>
<gd:when startTime='2010-03-13T14:00Z' endTime='2010-03-13T14:30Z'/>
</gCal:busy>
<gCal:busy>
<gd:when startTime='2010-03-13T16:00Z' endTime='2010-03-13T16:30Z'/>
</gCal:busy>
</entry>
Based on the above return feed, how can I use Calendar Data API for Java to get each block of busy time so that I can read and do something with them like printing to the terminal? What is the type of feed this returns, CalendarEventFeed, CalendarFeed,...?
CalendarService service = new CalendarService("myapp-v1");
service.setOAuthCredentials(oauthParameters, new OAuthHmacSha1Signer());
URL feedUrl = new URL(METAFEED_URL_BASE+FREEBUSY_FEED_URL_SUFFIX+user.username());
CalendarEventFeed resultFeed = service.getFeed(feedUrl, CalendarEventFeed.class);
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AppEngine 支持（自 1.2.8 起）JAXB XML 到对象数据绑定 API。网络上有许多示例和教程（尽管大多数都关注从 XML 模式自动生成类 - 您不需要这个）。示例：http://www.vogella.de/articles/JAXB/article.html< /a>
或者，您也可以使用Java 日历数据 API，和完全放弃 XML 转换步骤。
AppEngine supports (since 1.2.8) JAXB XML-to-objects data binding API. There are many examples and tutorials on the web (although most focus on automatic class generation from XML schema - you do not need this). An example: http://www.vogella.de/articles/JAXB/article.html
Alternatively you could use Calendar Data API for Java, and forgo the XML conversion step altogether.