我正在使用 ROME 从我的数据库中的数据生成提要。
在我找到的所有示例中，Servlet 从数据库中提取所有数据，并将其作为提要发送。
现在，如果数据库包含数千个条目，我应该发送多少个条目？
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
SyndFeed feed = getFeed(request);
String feedType = request.getParameter("type");
feedType = feedType != null ? feedType : defaultType;
feed.setFeedType(feedType);
response.setContentType("application/xml; charset=UTF-8");
SyndFeedOutput output = new SyndFeedOutput();
output.output(feed, response.getWriter());
} catch (FeedException ex) {
String msg = "Could not generate feed";
log(msg, ex);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg);
}
}
protected SyndFeed getFeed(HttpServletRequest request) {
// **** Here I query the database for posts, but I don't know how many
// I should fetch or where should I stop? ***
List<Post> posts = getPosts();
SyndFeed feed = new SyndFeedImpl();
feed.setTitle("My feed");
feed.setLink("http://myurl");
feed.setDescription("my desc");
// create the feeds.Each tutorial will be a feed entry
List<SyndEntry> entries = new ArrayList<SyndEntry>();
for (Post post : posts) {
SyndEntry entry = new SyndEntryImpl();
SyndContent description;
String title = post.getTitle();
String link = post.getLink();
entry.setTitle(title);
entry.setLink(link);
// Create the description of the feed entry
description = new SyndContentImpl();
description.setType("text/plain");
description.setValue(post.getDesc());
entry.setDescription(description);
entries.add(entry);
}
feed.setEntries(entries);
return feed;
}