//查询Tag的数量（符合tagName=‘news’）ThemeDisplay themeDisplay = (ThemeDisplay)renderRequest.getAttribute(WebKeys.THEME_DISPLAY);String tagName = "news";try {AssetTag assetTag = AssetTagLocalServiceUtil.getTag(themeDisplay.getScopeGroupId(), tagName);int assetCount = assetTag.getAssetCount();System.out.println("Tage name: "+tagName);System.out.println("Number of associated assets: "+assetCount); } catch (PortalException e) {e.printStackTrace();} catch (SystemException e) {e.printStackTrace();}//=======================//查询all assets （by tagName）ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);String tagName = "news";try {AssetTag assetTag = AssetTagLocalServiceUtil.getTag(themeDisplay.getScopeGroupId(), tagName); AssetEntryQuery assetEntryQuery = new AssetEntryQuery();long[] tagIds = { assetTag.getTagId() };assetEntryQuery.setAnyTagIds(tagIds);List<AssetEntry> assetEntryList = AssetEntryLocalServiceUtil.getEntries(assetEntryQuery);for (AssetEntry assetEntry : assetEntryList) {//Here all the logic will go......}} catch (PortalException e) {e.printStackTrace();} catch (SystemException e) {e.printStackTrace();}//=======================//查询JournalArticle所有符合tagName=‘news’的文章//备注：JournalArticle是liferay内置的一种Web CMS Content，利用它可以做新闻类的展示ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);String tagName = "news";try {AssetTag assetTag = AssetTagLocalServiceUtil.getTag(themeDisplay.getScopeGroupId(), tagName); AssetEntryQuery assetEntryQuery = new AssetEntryQuery();long[] tagIds = { assetTag.getTagId() };assetEntryQuery.setAnyTagIds(tagIds);assetEntryQuery.setClassName(JournalArticle.class.getName());List<AssetEntry> assetEntryList = AssetEntryLocalServiceUtil.getEntries(assetEntryQuery);//开始遍历JournalArticlefor (AssetEntry assetEntry : assetEntryList) { JournalArticleResource journalArticleResource = JournalArticleResourceLocalServiceUtil.getJournalArticleResource(assetEntry.getClassPK());JournalArticle journalArticle = JournalArticleLocalServiceUtil.getArticle(journalArticleResource.getGroupId(),journalArticleResource.getArticleId());System.out.println("Journal Article Title: "+journalArticle.getTitle(themeDisplay.getLocale()));}} catch (PortalException e) {e.printStackTrace();} catch (SystemException e) {e.printStackTrace();}//=======================//查询所有符合tagName=‘news’的书签等信息ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);String tagName = "news";try {AssetTag assetTag = AssetTagLocalServiceUtil.getTag(themeDisplay.getScopeGroupId(), tagName);AssetEntryQuery assetEntryQuery = new AssetEntryQuery();long[] tagIds = { assetTag.getTagId() };assetEntryQuery.setAnyTagIds(tagIds);/***  Bookmarks*/assetEntryQuery.setClassName(BookmarksEntry.class.getName());List<AssetEntry> assetEntryList = AssetEntryLocalServiceUtil.getEntries(assetEntryQuery);for (AssetEntry assetEntry : assetEntryList) { BookmarksEntry bookmarksEntry = BookmarksEntryLocalServiceUtil.getBookmarksEntry(assetEntry.getClassPK());....to do something }/***  Blogs*/assetEntryQuery.setClassName(BlogsEntry.class.getName());assetEntryList = AssetEntryLocalServiceUtil.getEntries(assetEntryQuery);for (AssetEntry assetEntry : assetEntryList) {BlogsEntry BlogsEntry = BlogsEntryLocalServiceUtil.getBlogsEntry(assetEntry.getClassPK());....to do something } /***  Documents and media*/assetEntryQuery.setClassName(DLFileEntry.class.getName());assetEntryList = AssetEntryLocalServiceUtil.getEntries(assetEntryQuery);for (AssetEntry assetEntry : assetEntryList) {DLFileEntry dLFileEntry = DLFileEntryLocalServiceUtil.getDLFileEntry(assetEntry.getClassPK());....to do something }} catch (PortalException e) {e.printStackTrace();} catch (SystemException e) {e.printStackTrace();}