RSS 和 Atom

AbstractAtomFeedView 和 AbstractRssFeedView 皆繼承自 AbstractFeedView 基礎類別，並分別用於提供 Atom 和 RSS Feed 視圖。它們基於 ROME 專案，且位於 org.springframework.web.servlet.view.feed 套件中。

AbstractAtomFeedView 要求您實作 buildFeedEntries() 方法，並可選擇性地覆寫 buildFeedMetadata() 方法（預設實作為空）。以下範例示範如何操作

Java
Kotlin

public class SampleContentAtomView extends AbstractAtomFeedView {

	@Override
	protected void buildFeedMetadata(Map<String, Object> model,
			Feed feed, HttpServletRequest request) {
		// implementation omitted
	}

	@Override
	protected List<Entry> buildFeedEntries(Map<String, Object> model,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		// implementation omitted
	}
}

class SampleContentAtomView : AbstractAtomFeedView() {

	override fun buildFeedMetadata(model: Map<String, Any>,
			feed: Feed, request: HttpServletRequest) {
		// implementation omitted
	}

	override fun buildFeedEntries(model: Map<String, Any>,
			request: HttpServletRequest, response: HttpServletResponse): List<Entry> {
		// implementation omitted
	}
}

實作 AbstractRssFeedView 也有類似的要求，如下列範例所示

Java
Kotlin

public class SampleContentRssView extends AbstractRssFeedView {

	@Override
	protected void buildFeedMetadata(Map<String, Object> model,
			Channel feed, HttpServletRequest request) {
		// implementation omitted
	}

	@Override
	protected List<Item> buildFeedItems(Map<String, Object> model,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		// implementation omitted
	}
}

class SampleContentRssView : AbstractRssFeedView() {

	override fun buildFeedMetadata(model: Map<String, Any>,
								feed: Channel, request: HttpServletRequest) {
		// implementation omitted
	}

	override fun buildFeedItems(model: Map<String, Any>,
			request: HttpServletRequest, response: HttpServletResponse): List<Item> {
		// implementation omitted
	}
}

buildFeedItems() 和 buildFeedEntries() 方法會傳入 HTTP 請求，以防您需要存取 Locale。HTTP 回應僅用於設定 Cookie 或其他 HTTP 標頭。方法傳回後，Feed 會自動寫入回應物件。

如需建立 Atom 視圖的範例，請參閱 Alef Arendsen 的 Spring Team Blog 文章。