lucence內建的query物件lucene
1.termquery 詞條搜尋
解析：對某個固定詞條的指定，實現搜尋索引中存在該詞條的文件
示例:indexsearcher searcher = new indexsearcher(index_store_path);
term t = new term("bookname", "鋼);
query query = new termquery(t);
system.out.println(query);
hits hits = searcher.search(query);
2.booleanquery 布林搜尋
解析:lucence各種複雜的查詢，最終都表示成boolean型,用法相當於sql查詢語句中條件的 and ,or 作用
booleanclause.occur.should or的關係
booleanclause.occur.must and 的關係
booleanclause.occur.must_not not的關係
示例:indexsearcher searcher = new indexsearcher(index_store_path);
term t = new term("bookname", "一);
term t2 = new term("bookname", "三);
termquery q1 = new termquery(t);
termquery q2 = new termquery(t2);
booleanquery query = new booleanquery();
query.add(q1, booleanclause.occur.should);
query.add(q2, booleanclause.occur.should);
system.out.println(query);
hits hits = searcher.search(query);
3.rangequery範圍搜尋
解析:用於查詢一定範圍內的文件
示例:term begin = new term("booknumber", "0000004");
term end = new term("booknumber", "0000008");
query query = new rangequery(begin,end,inclusive);
system.out.println(query);
hits hits = searcher.search(query);
4.prefixquery 字首搜尋
解析:字首搜尋,相當於sql查詢的 like 'xx%'
示例:indexsearcher searcher = new indexsearcher(index_store_path);
term prefix = new term("bookname",searchvalue);
prefixquery query = new prefixquery(prefix);
system.out.println(query);
hits hits = searcher.search(query);
5.phrasequery 短語搜尋
解析:將輸入的詞條當短語來查詢
示例:indexsearcher searcher = new indexsearcher(index_store_path);
phrasequery query = new phrasequery();
query.add(new term("bookname","鋼) );
query.add(new term("bookname","鐵));
query.setslop(2);
system.out.println(query);
//搜尋含有鋼和鐵關鍵字
hits hits = searcher.search(query);
6.multiphrasequery 多短語搜尋
解析:示例:
indexsearcher searcher = new indexsearcher(index_store_path);
multiphrasequery query = new multiphrasequery();
term t =new term("bookname","鋼);
term t2 = new term("bookname","和);
query.add(new term);
query.add(new term("bookname","鐵));
term t4 = new term("bookname","的);
term t3 = new term("bookname","戰);
query.add(new term);
system.out.println(query);
hits hits = searcher.search(query);
7.fuzzyquery 模糊搜尋
解析:對單字的模糊查詢
示例:indexsearcher searcher = new indexsearcher(index_store_path);
term t =new term("bookname","鋼);
fuzzyquery query = new fuzzyquery(t,0.3f,1);
system.out.println(query);
hits hits = searcher.search(query);
8.wildcardquery 萬用字元搜尋
解析:在查詢時借助萬用字元，來匹配
示例:term t = new term("bookname","鋼");
wildcardquery query = new wildcardquery(t);
system.out.println(query);
hits hits = searcher.search(query);
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