public TopDocCollectorSearchResult searchByScore(
String queryStr, int startFrom, String operator) {
try {
queryStr = queryStr.trim();
QueryParser parser = new QueryParser("contents", analyzer);
if (QueryParser.AND_OPERATOR.toString().equalsIgnoreCase(operator)) {
parser.setDefaultOperator(QueryParser.AND_OPERATOR);
} else {
parser.setDefaultOperator(QueryParser.OR_OPERATOR);
}
Query query;
query = parser.parse(queryStr);
TopDocCollector collector = doPagingSearch(query, startFrom);
TopDocCollectorSearchResult result = new TopDocCollectorSearchResult(collector, searcher);
return result;
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
// System.out.println("Searching for: " + query.toString("contents"));
// doPagingSearch(in, searcher, query, hitsPerPage, raw, queries ==
// null);
// }
// reader.close();
}
public TopFieldDocsSearchResult searchBySession(String queryStr, int startFrom, String operator) {
try {
queryStr = queryStr.trim();
QueryParser parser = new QueryParser("contents", analyzer);
Operator op = QueryParser.AND_OPERATOR;
if (QueryParser.AND_OPERATOR.toString().equalsIgnoreCase(operator)) {
parser.setDefaultOperator(QueryParser.AND_OPERATOR);
} else {
parser.setDefaultOperator(QueryParser.OR_OPERATOR);
}
Query query;
query = parser.parse(queryStr);
Sort sort = new Sort("summary", true);
TopFieldDocs tfd = searcher.search(query, null, startFrom + 10, sort);
TopFieldDocsSearchResult result = new TopFieldDocsSearchResult(tfd, searcher);
return result;
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@SuppressWarnings("static-access")
private QueryParser getQueryParser(Analyzer analyzer) {
// defaultSearchField indicates which field search against when there is no term
// indicated in the query string.
// The analyzer is needed so that we use the same analyzer on the search queries as
// was used on the text that was indexed.
QueryParser qp = new QueryParser(defaultSearchField, analyzer);
// this sets the query parser to AND all of the query terms it finds.
qp.setDefaultOperator(QueryParser.AND_OPERATOR);
// set up the map of stemmed field names -> unstemmed field names
// HashMap<String,String> map = new HashMap<String, String>();
// map.put(Entity2LuceneDoc.term.ALLTEXT,Entity2LuceneDoc.term.ALLTEXTUNSTEMMED);
// qp.setStemmedToUnstemmed(map);
return qp;
}
private Document findByKey(IndexReader reader, Field keyField)
throws ParseException, IOException {
Searcher searcher = new IndexSearcher(reader);
QueryParser queryParser = new QueryParser(luceneVersion, keyField.name(), queryAnalyzer);
queryParser.setDefaultOperator(QueryParser.Operator.AND);
String queryString = keyField.name() + ":" + keyField.stringValue();
Query query = queryParser.parse(queryString);
TopDocs docs = searcher.search(query, 10000);
ScoreDoc[] scoreDocs = docs.scoreDocs;
if (scoreDocs.length != 1) {
return null;
}
ScoreDoc doc = scoreDocs[0];
return searcher.doc(doc.doc);
}
@SuppressWarnings("resource")
public static void main(String[] args) throws CorruptIndexException, Exception {
// Lucene Document的域名
String fieldName = "text";
// 检索内容
String text = "的数据库的设计可怜的";
// 实例化IKAnalyzer分词器
Analyzer analyzer = new IKAnalyzer();
Directory directory = FSDirectory.open(new File("D:/luce/index"));
IndexWriter iwriter = null;
IndexReader ireader = null;
IndexSearcher isearcher = null;
// 建立内存索引对象
// directory = new RAMDirectory();
// 配置IndexWriterConfig
IndexWriterConfig iwConfig = new IndexWriterConfig(Version.LUCENE_34, analyzer);
iwConfig.setOpenMode(OpenMode.CREATE_OR_APPEND);
iwriter = new IndexWriter(directory, iwConfig);
// 写入索引
Document doc = new Document();
doc.add(new Field("ID", "10000", Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.add(new Field(fieldName, text, Field.Store.YES, Field.Index.ANALYZED));
iwriter.addDocument(doc);
iwriter.close();
// 搜索过程********************************** //实例化搜索器
ireader = IndexReader.open(directory);
isearcher = new IndexSearcher(ireader);
String keyword = "dsfdjksjflkds";
// 使用QueryParser查询分析器构造Query对象
QueryParser qp = new QueryParser(Version.LUCENE_34, fieldName, analyzer);
qp.setDefaultOperator(QueryParser.AND_OPERATOR);
Query query = qp.parse(keyword);
// 搜索相似度最高的5条记录
TopDocs topDocs = isearcher.search(query, 5);
System.out.println("命中：" + topDocs.totalHits);
// 输出结果
ScoreDoc[] scoreDocs = topDocs.scoreDocs;
for (int i = 0; i < topDocs.totalHits; i++) {
Document targetDoc = isearcher.doc(scoreDocs[i].doc);
System.out.println("内容：" + targetDoc.toString());
// System.out.println(scoreDocs[i].);
}
}
/**
* You can use it in {@link #prepareQuery()}.
*
* @return the query parser
*/
protected QueryParser newQueryParser() {
Analyzer analyzer = getFullTextSession().getSearchFactory().getAnalyzer(getType());
QueryParser queryParser = new QueryParser(Version.LUCENE_31, null, analyzer);
queryParser.setDefaultOperator(Operator.AND);
return queryParser;
}
