public List<LuceneSearchResult> search(String keyword, boolean highlight, int size)
throws IOException, ParseException {
IndexReader reader = luceneIndex.reader();
try {
IndexSearcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new IKAnalyzer();
MultiFieldQueryParser parser =
new MultiFieldQueryParser(Version.LUCENE_4_9, fields, analyzer, boosts);
// 将关键字包装成Query对象
Query query = parser.parse(keyword);
TopDocs results = searcher.search(query, size);
FragListBuilder fragListBuilder = new SimpleFragListBuilder();
FragmentsBuilder fragmentsBuilder =
new ScoreOrderFragmentsBuilder(
BaseFragmentsBuilder.COLORED_PRE_TAGS, BaseFragmentsBuilder.COLORED_POST_TAGS);
FastVectorHighlighter fvh =
new FastVectorHighlighter(true, true, fragListBuilder, fragmentsBuilder);
FieldQuery fq = fvh.getFieldQuery(query);
// System.out.println("命中--》" + results.totalHits);
List<LuceneSearchResult> searchResults = new ArrayList<LuceneSearchResult>();
for (ScoreDoc sd : results.scoreDocs) {
// 当查询不到高亮信息时，返回内容为Null
// String highContent = fvh.getBestFragment(fq, reader, sd.doc, "content", 100);
// System.out.println("highContent-->" + highContent);
String highTitle = null;
if (highlight) {
fvh.getBestFragment(fq, reader, sd.doc, "title", 100);
if (highTitle == null) {
Document doc = searcher.doc(sd.doc);
/** 如果高亮内容为null，那么表示标题没有需要高亮的内容，那么赋值为原有标题 */
highTitle = doc.get("title");
}
} else {
highTitle = searcher.doc(sd.doc).get("title");
}
String id = searcher.doc(sd.doc).get("id");
searchResults.add(new LuceneSearchResult(id, highTitle));
}
return searchResults;
} finally {
reader.close();
}
}
public void close() throws IOException {
if (luceneIndex != null) luceneIndex.close();
}
