lucene 7.x 查询

 @Test
     public void indexSearch() throws IOException, ParseException {

         //Termquery:精确string查询
     //    Query termQuery = new TermQuery(new Term("id","1"));
     //    doSearch(termQuery);

         //数值范围查询
 //        Query rangeQuery = FloatPoint.newRangeQuery("price",55,56);
     //    doSearch(rangeQuery);

         //组合查询
         /*Query q1 = new TermQuery(new Term("description","java"));
         Query q2 = new TermQuery(new Term("name","java"));

         BooleanQuery.Builder builder = new BooleanQuery.Builder();
         builder.add(new BooleanClause(q1, Occur.MUST));
         builder.add(new BooleanClause(q2, Occur.MUST_NOT));
         doSearch(builder.build());*/

         //queryparser,需要指定分词器
         /*QueryParser parser = new QueryParser("description",new StandardAnalyzer());
         Query query = parser.parse("lucene");
         query = parser.parse("description:lucene AND name:lucene");
         doSearch(query);*/

         //多域查询
         //默认的搜索域,或的关系
         String[] fields = {"name","description"};
         MultiFieldQueryParser parser = new MultiFieldQueryParser(fields,new StandardAnalyzer());
         Query query = parser.parse("lucene");
     //    query = parser.parse("description:lucene AND name:lucene");
     //    query = parser.parse("description:lucene NOT name:lucene");
         query = parser.parse("lucene java");//以或的关系在域中搜索
         doSearch(query);
     }

 private void doSearch (Query query) {
         Directory directory;
         try {
             directory = FSDirectory.open(Paths.get("F:/luceneIndex"));

         IndexReader reader = DirectoryReader.open(directory);
         //创建IndexSearcher
         IndexSearcher searcher = new IndexSearcher(reader);

         //10表示显示的条数
         TopDocs topDocs = searcher.search(query,10);
         long count = topDocs.totalHits;
         System.out.println("匹配的总条数是----" + count);

         //根据相关度排序后的结果
         ScoreDoc[] docs = topDocs.scoreDocs;
         for (ScoreDoc scoreDoc : docs) {
             int docId = scoreDoc.doc;
             Document document = searcher.doc(docId);
             System.out.println("id----"+document.get("id"));
             System.out.println("name----"+document.get("name"));
             /*System.out.println("price----"+document.get("price"));
             System.out.println("pic----"+document.get("pic"));
             System.out.println("description----"+document.get("description"));*/
             System.out.println("======================");
         }
         reader.close();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }

     }

需要注意的组合查询的api变化,与老版本的直接new BooleanQuery()相比变化还是挺大的