lucene简单入门demo-白红宇

lucene简单入门demo

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发布时间：2019-06-24

本文共 3509 字，大约阅读时间需要 11 分钟。

package com.pdsu.lucene;/** * 类说明： *  * @author 作者: LiuJunGuang * @version 创建时间：2011-12-29 下午04:40:39 */public class Article {	private int id;	private String title;	private String content;	public int getId() {		return id;	}	public void setId(int id) {		this.id = id;	}	public String getTitle() {		return title;	}	public void setTitle(String title) {		this.title = title;	}	public String getContent() {		return content;	}	public void setContent(String content) {		this.content = content;	}	public Article(int id, String title, String content) {		super();		this.id = id;		this.title = title;		this.content = content;	}	public Article() {		super();	}	@Override	public String toString() {		return "Article [id=" + id + ", title=" + title + ", content="				+ content + "]";	}}

lucene简单应用

package com.pdsu.lucene;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.lucene.analysis.Analyzer;import org.apache.lucene.analysis.standard.StandardAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.Field.Index;import org.apache.lucene.document.Field.Store;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriter.MaxFieldLength;import org.apache.lucene.queryParser.QueryParser;import org.apache.lucene.search.IndexSearcher;import org.apache.lucene.search.Query;import org.apache.lucene.search.ScoreDoc;import org.apache.lucene.search.TopDocs;import org.apache.lucene.store.Directory;import org.apache.lucene.store.FSDirectory;import org.apache.lucene.util.Version;import org.junit.Test;/** * 类说明： *  * @author 作者: LiuJunGuang * @version 创建时间：2011-12-29 下午04:42:21 */public class Lucene {	@Test	public void insert() throws IOException {		Article article = new Article(1, "lucene is very good!",				"lucene very good!,lucene very good!");		Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);// 分词器		Directory dir = FSDirectory.open(new File("./store")); // 数据存储目录		IndexWriter index = new IndexWriter(dir, analyzer,				MaxFieldLength.LIMITED);		Document document = new Document();// 文档对象		Field idField = new Field("id", String.valueOf(article.getId()), Store.YES, Index.NOT_ANALYZED);		Field titleField = new Field("title", article.getTitle(), Store.YES, Index.ANALYZED);		Field contentField = new Field("content", article.getContent(), Store.YES, Index.NOT_ANALYZED);		document.add(idField);		document.add(titleField);		document.add(contentField);		index.addDocument(document);// 添加文档对象		index.close();	}		@Test	public  void query() throws Exception{		Directory dir = FSDirectory.open(new File("./store")); // 数据存储目录		IndexSearcher indexSearcher = new IndexSearcher(dir);				Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);// 分词器		QueryParser qp = new QueryParser(Version.LUCENE_30, "title", analyzer);		Query query = qp.parse("lucene");		TopDocs tops = indexSearcher.search(query, 10);		//获得记录总条数		int count = tops.totalHits;				ScoreDoc []scoreDocs =  	tops.scoreDocs;//得到目录		List
    
      articles = new ArrayList
     
      ();		for (int i = 0; i < scoreDocs.length; i++) {			float score = scoreDocs[i].score;//相关度得分			int doc = scoreDocs[i].doc;			Document document = indexSearcher.doc(doc);			Article article = new Article(Integer.parseInt(document.get("id")), document.get("title"),document.get("content"));			articles.add(article);		}		System.out.println(articles);	}}