Article.java

package cn.toto.lucene.quickstart;

?

publicclassArticle {

??privateintid;

??private Stringtitle;

??private Stringcontent;

??/**

???* @return the id

???*/

??publicint getId() {

?????returnid;

??}

??/**

???* @param id the id to set

???*/

??

??publicvoid setId(int id) {

?????this.id = id;

??}

??/**

???* @return the title

???*/

??public String getTitle() {

?????returntitle;

??}

??/**

???* @param title the title to set

???*/

??

??publicvoid setTitle(String title) {

?????this.title = title;

??}

??/**

???* @return the content

???*/

??public String getContent() {

?????returncontent;

??}

??/**

???* @param content the content to set

???*/

??

??publicvoid setContent(String content) {

?????this.content = content;

??}

}

工具類Configuration.java

package cn.toto.lucene.util;

?

import java.io.File;

?

import org.apache.lucene.analysis.Analyzer;

import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.FSDirectory;

import org.apache.lucene.util.Version;

?

/**

?* @brief Configuration.java配置對象，提供Lucene需要??索引目錄，分詞器

?* @attention

?* @author toto

?* @date 2014-12-7

?* @note begin modify by涂作權

?*/

public class Configuration {

???private static Directory directory;

???private static Analyzer analyzer;

???private static Version version;

???

???static {

??????????? try {

????????????????????? //設置磁盤目錄，表示的是本地index目錄

???????????????????????????directory = FSDirectory.open(new File("index"));

??????????????????} catch (Exception e) {

???????????????????????????e.printStackTrace();

??????????????????}

??????????? //表示LUCENE版本

??????????? version = Version.LUCENE_36;

??????????? //表示使用版本

??????????? analyzer = new StandardAnalyzer(version);

???}

???

???//提供目錄

???public static Directory getDirectory()

???{

??????????? return directory;

???}

???

???//提供分詞器

???public static Analyzer getAnalyzer()

???{

??????????? return analyzer;

???}

???

???//獲取版本

???public static Version getVersion()

???{

??????????? return version;

???}

}

工具類LuceneUtils.java

package cn.toto.lucene.util;

import java.io.IOException;

?

import org.apache.lucene.index.CorruptIndexException;

import org.apache.lucene.index.IndexReader;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.index.IndexWriterConfig;

import org.apache.lucene.search.IndexSearcher;

?

// lucene工具類

public class LuceneUtils {

????????private static IndexWriter indexWriter;

????????static {

??????????????????// 索引目錄位置

??????????????????try {

???????????????????????????// 寫入索引

???????????????????????????IndexWriterConfig indexWriterConfig = new IndexWriterConfig(

??????????????????????????????????????????????Configuration.getVersion(), Configuration.getAnalyzer());

???????????????????????????indexWriter = new IndexWriter(Configuration.getDirectory(),

??????????????????????????????????????????????indexWriterConfig);

?

???????????????????????????// 綁定虛擬機退出事件，關閉IndexWriter

?????????????????????????? Runtime.getRuntime().addShutdownHook(new Thread() {

????????????????????????????????????@Override

????????????????????????????????????public void run() {

??????????????????????????????????????????????try {

???????????????????????????????????????????????????????indexWriter.close();

??????????????????????????????????????????????} catch (CorruptIndexException e) {

???????????????????????????????????????????????????????e.printStackTrace();

??????????????????????????????????????????????} catch (IOException e) {

???????????????????????????????????????????????????????e.printStackTrace();

???????????????????????????????????????????? }

????????????????????????????????????}

???????????????????????????});

??????????????????} catch (IOException e) {

???????????????????????????e.printStackTrace();

??????????????????}

????????}

?

????????// 提供獲取IndexWriter對象

????????public static IndexWriter getIndexWriter() {

??????????????????return indexWriter;

????????}

?

????????// 獲得查詢IndexSeacher對象

????????public static IndexSearcher getIndexSearcher() throws Exception {

??????????????????return new IndexSearcher(IndexReader.open(Configuration.getDirectory()));

????????}

}

LuceneTest.java

package cn.toto.lucene.api;

?

import java.io.File;

importjava.io.IOException;

?

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.Store;

import org.apache.lucene.index.CorruptIndexException;

import org.apache.lucene.index.IndexReader;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.index.IndexWriterConfig;

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.store.LockObtainFailedException;

import org.apache.lucene.store.RAMDirectory;

import org.apache.lucene.util.Version;

import org.junit.Test;

?

import cn.toto.lucene.quickstart.Article;

import cn.toto.lucene.util.LuceneUtils;

?

// API詳細分析

publicclass LuceneTest {

??@Test

??//使用LuceneUtils解決 IndexWriter并發問題

??@SuppressWarnings("unused")

??publicvoid testLock2() {

?????IndexWriter indexWriter2 = LuceneUtils.getIndexWriter();

?????IndexWriter indexWriter1 = LuceneUtils.getIndexWriter();

??}

?

??@Test

??@SuppressWarnings("all")

??//使用兩個IndexWrtier報錯，鎖使用問題

??publicvoid testLock()throws CorruptIndexException,

????????LockObtainFailedException, IOException {

?????//索引目錄位置

?????Directory directory = FSDirectory.open(new File("index"));//當前工程index目錄

?????//分詞器

?????Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);

?????//寫入索引

?????IndexWriterConfig indexWriterConfig = new IndexWriterConfig(

???????????Version.LUCENE_36, analyzer);

?????IndexWriter indexWriter = new IndexWriter(directory, indexWriterConfig);

?

?????IndexWriterConfig indexWriterConfig2 = new IndexWriterConfig(

???????????Version.LUCENE_36, analyzer);

?????IndexWriter indexWriter2 = new IndexWriter(directory,

???????????indexWriterConfig2);

??}

上面的運行結果如下：

?

??@Test

??//測試Store和 Index

??/*

???* Store.YES 存儲、Store.NO不存儲 Index.NO不建立索引 Index.ANALYZED分詞建立索引

???* Index.NOT_ANALYZED 不分詞建立索引Index.ANALYZED_NO_NORMS 分詞建立索引，不存放權重信息

???* Index.NOT_ANALYZED_NO_NORMS 不分詞建立索引，不存放權重信息

???*/

??publicvoid testIndex()throws Exception {

?????//需要建立索引目標數據

?????Article article = new Article();

?????article.setId(100);

?????article.setTitle("學習全文檢索");

?????article.setContent("lucene是搜索引擎開發技術，lucene并不是一個現成的產品,由Apache提供");

?

?????//將索引數據轉換 Document對象（lucene要求）

?????Document document = new Document();

?????document.add(new Field("id", article.getId() + "", Store.YES,

???????????Field.Index.NOT_ANALYZED));//對于id通常不分詞

?????document.add(new Field("title", article.getTitle(), Store.YES,

???????????Field.Index.ANALYZED_NO_NORMS));

?????document.add(new Field("content", article.getContent(), Store.YES,

???????????Field.Index.ANALYZED));

?

?????//建立索引庫

?????//索引目錄位置

?????Directory directory = FSDirectory.open(new File("index"));//當前工程index目錄

?????//分詞器

?????Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);

?????//寫入索引

?????IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_36, analyzer);

?????IndexWriter indexWriter = new IndexWriter(directory, indexWriterConfig);

?

?????//將document數據寫入索引庫

?????indexWriter.addDocument(document);

?????indexWriter.close();

??}

上面的單元測試的結果

?

?

??@Test

??//查詢索引庫 ,查看norms效果

??publicvoid testQuery()throws Exception {

?????//建立Query對象 ---- 根據標題

?????String queryStrng = "檢索";

?????Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);

?????QueryParser queryParser = new QueryParser(Version.LUCENE_36,"title",

???????????analyzer);

?????Query query = queryParser.parse(queryStrng);

?

?????//根據Query查找

?????Directory directory = FSDirectory.open(new File("index"));

?????IndexSearcher indexSearcher = new IndexSearcher(

???????????IndexReader.open(directory));

?????//執行查詢獲得滿足結果前多少條記錄

?????TopDocs topDocs = indexSearcher.search(query, 100);//查詢滿足結果前100條數據

?????System.out.println("滿足結果記錄條數：" + topDocs.totalHits);

?

?????//獲得每個結果

?????ScoreDoc[] scoreDocs = topDocs.scoreDocs;

?????for (int i = 0; i < scoreDocs.length; i++) {

????????//打印得分

????????System.out.println("得分：" + scoreDocs[i].score);

????????//獲得Document下標

????????int docID = scoreDocs[i].doc;

????????Document document = indexSearcher.doc(docID);

????????System.out.println("id:" + document.get("id"));

????????System.out.println("title:" + document.get("title"));

????????System.out.println("content:" + document.get("content"));

?????}

?

?????indexSearcher.close();

??}

上面的運行單元測試之后的結果如下：

?

??@SuppressWarnings("unused")

??@Test

??//測試路徑寫法

??publicvoid testDirectory()throwsIOException {

?????//磁盤路徑

?????FSDirectory.open(new File("index"));//當前工程index目錄，相對路徑

?????FSDirectory.open(new File("d:\\index"));//絕對路徑

?????//類路徑 WEB-INF/classes

?????FSDirectory.open(new File(LuceneTest.class.getResource("/").getFile()));

?

?????//內存路徑

?????Directory directory = new RAMDirectory();

??}

}