1 package cn.itcast.h_filter; 2  3 import java.util.ArrayList; 4 import java.util.List; 5  6 import org.apache.lucene.document.Document; 7 import org.apache.lucene.queryParser.MultiFieldQueryParser; 8 import org.apache.lucene.queryParser.QueryParser; 9 import org.apache.lucene.search.Filter;10 import org.apache.lucene.search.IndexSearcher;11 import org.apache.lucene.search.NumericRangeFilter;12 import org.apache.lucene.search.Query;13 import org.apache.lucene.search.Sort;14 import org.apache.lucene.search.SortField;15 import org.apache.lucene.search.TopDocs;16 import org.apache.lucene.util.Version;17 import org.junit.Test;18 19 import cn.itcast._domain.Article;20 import cn.itcast._util.ArticleDocumentUtils;21 import cn.itcast._util.LuceneUtils;22 23 public class TestApp {24 25     // 搜索26     @Test27     public void testSearch() throws Exception {28         // 准备查询条件29         String queryString = "lucene";30 31         // 执行搜索32         List<Article> list = new ArrayList<Article>();33 34         // 1，把查询字符串转为Query对象（从title和content中查询）35         QueryParser queryParser = new MultiFieldQueryParser(Version.LUCENE_30, new String[] { "title", "content" }, LuceneUtils.getAnalyzer());36         Query query = queryParser.parse(queryString);37 38         // 2，执行查询，得到中间结果39         IndexSearcher indexSearcher = new IndexSearcher(LuceneUtils.getDirectory()); // 指定所用的索引库40         // TopDocs topDocs = indexSearcher.search(query, 100); // 最多返回前n条结果41 42         // ========================================================================================== 【创建高亮器】43         // indexSearcher.search(query, n);44         // indexSearcher.search(query, filter, n);45         // indexSearcher.search(query, filter, n, sort);46 47         Filter filter = NumericRangeFilter.newIntRange("id", 5, 15, false, true); // null表示没有过滤条件   选择 (5,15] 之间的过滤的数据，后面的boolean判断 括号开闭用处的48         TopDocs topDocs = indexSearcher.search(query, filter, 100);49 50         // ==========================================================================================51 52         // 3，处理结果53         for (int i = 0; i < topDocs.scoreDocs.length; i++) {54             // 根据编号拿到Document数据55             int docId = topDocs.scoreDocs[i].doc; // Document的内部编号56             Document doc = indexSearcher.doc(docId);57             // 把Document转为Article58             Article article = ArticleDocumentUtils.documentToArticle(doc);59             list.add(article);60         }61         indexSearcher.close();62 63         // 显示结果64         System.out.println("总结果数：" + list.size());65         for (Article a : list) {66             System.out.println("------------------------------");67             System.out.println("id = " + a.getId());68             System.out.println("title = " + a.getTitle());69             System.out.println("content = " + a.getContent());70         }71     }72 }