Lucene在6.0版本之后彻底废除了Filter的使用，采用BooleanQuery来实现Filter的功能，核心代码如下：
TermQuery termQuery = new TermQuery(new Term("content","长")); TermQuery termQuery1 = new TermQuery(new Term("content","格")); BooleanQuery.Builder builder = new BooleanQuery.Builder();//构造booleanQuery builder.add(termQuery, BooleanClause.Occur.FILTER); //BooleanClause.Occur.FILTER 设置为过滤，这个termQuery包含的就相当于Filter builder.add(termQuery1, BooleanClause.Occur.FILTER);//这个同上，也就是可以添加多个Filter（对Lucene6之前的Filter不够熟悉的请看这个：http://www.cnblogs.com/forfuture1978/archive/2010/05/19/1738805.html）
下面给出具体代码，大家可以试一试：
package Query;import org.apache.lucene.analysis.standard.StandardAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.TextField;import org.apache.lucene.index.DirectoryReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.index.Term;import org.apache.lucene.search.*;import org.apache.lucene.store.Directory;import org.apache.lucene.store.FSDirectory;import java.io.IOException;import java.nio.file.Paths;/** * Created by jet on 2017/7/31. */public class BooleanQueryTest {public static void main(String[] args) throws IOException {index();search(); }public static void search() throws IOException { Directory dir = FSDirectory.open(Paths.get("booleanIndex")); IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir)); TermQuery termQuery = new TermQuery(new Term("content","长")); TermQuery termQuery1 = new TermQuery(new Term("content","格"));long start = System.currentTimeMillis();//construct a boolean query to test filter function. BooleanQuery.Builder builder = new BooleanQuery.Builder();//booleanQuery 中使用filter查询也可以让该部分的查询结果不参与打分 builder.add(termQuery, BooleanClause.Occur.FILTER); builder.add(termQuery1, BooleanClause.Occur.FILTER); BooleanQuery booleanQuery = builder.build(); TopDocs hits = searcher.search(booleanQuery,10);long end = System.currentTimeMillis(); System.out.println("totalhits: " + hits.totalHits); System.out.println("How long it takes to search: "+(end-start));for (ScoreDoc scoredoc:hits.scoreDocs ) { Document doc = searcher.doc(scoredoc.doc); System.out.println("score: "+ scoredoc.score); System.out.println("getFields: "+doc.get("content")); System.out.println(doc.get("FileName")); } }public static void index() throws IOException { String str ="权声明：本文为博主原创文章，未经博主允许不得转载。\n" ; String str1= "作为一个合格的程序员，往往是能够很好的管理自己的程序的，尤其是对于长期处于纯研发中心，甚至软件园的程序员朋友们，无论是上班还是下班，甚至课外活动，碰到的都是具有相同思维的人群，进而容易觉得好像大部分人都是相同的思维方式。因而当程序员成为管理者后，往往习惯于将程序员当做程序一样进行管理。\n" +"\n" + "然而程序员不是程序，是有血有肉的人，所以也呈现出很多与程序不同"; String str2="首先，程序是有确定的输入和输出的，一般对于特定的输入，一定会得到特定的输出，一般规定了输入输出，也就确定了接口，对其中的具体实现不用关心，对于成熟的公共模块，也不用担心其维护，可放心的使用，达到一劳永逸的效 "; String str3= " 而程序员不是，不是任何对程序员的输入，都会带来特定的输出的。"; String str4= "无论是源代码维护，文档，持续集成，设计模式，架构等，很多都深入程序员的思想中，甚至成为日常生活中的一种思维方式。"; Directory dir = FSDirectory.open(Paths.get("booleanIndex"));// Directory dir = new RAMDirectory(); StandardAnalyzer analyzer = new StandardAnalyzer(); IndexWriterConfig config = new IndexWriterConfig(analyzer); config.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND); IndexWriter writer = new IndexWriter(dir,config); Document document = new Document(); Document document1 = new Document(); Document document2 = new Document(); Document document3 = new Document(); Document document4 = new Document(); document.add(new Field("content",str, TextField.TYPE_STORED)); document1.add(new Field("content",str1, TextField.TYPE_STORED)); document2.add(new Field("content",str2, TextField.TYPE_STORED)); document3.add(new Field("content",str3, TextField.TYPE_STORED)); document4.add(new Field("content",str4, TextField.TYPE_STORED)); writer.addDocument(document); writer.addDocument(document1); writer.addDocument(document2); writer.addDocument(document3); writer.addDocument(document4); writer.close(); }}
转载于:https://www.cnblogs.com/jetHu/p/7270775.html
