2.Lucene3.6.2包介绍，第一个Lucene案例介绍，查看索引信息的工具lukeall介绍，Luke查看的索引库内容，索引查找过程

Version.LUCENE_36, analyzer);

IndexWriter indexWriter =
new IndexWriter(directory,indexWriterConfig);

//将document数据写入索引库

indexWriter.addDocument(document);

//关闭索引

indexWriter.close();

public
class Article {

private
int
id;

private String
title;

private String
content;

/**

* @return the
id

*/

public
int getId() {

return
id;

}

/**

* @param id
the id to set

*/

public
void setId(int
id) {

this.id
= id;

}

/**

* @return the
title

*/

public String getTitle() {

return
title;

}

/**

* @param title
the title to set

*/

public
void setTitle(String title) {

this.title
= title;

}

/**

* @return the
content

*/

public String getContent() {

return
content;

}

/**

* @param content
the content to set

*/

public
void setContent(String content) {

this.content
= content;

}

}

import java.io.File;

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.IndexWriterConfig;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.FSDirectory;

import org.apache.lucene.util.Version;

import org.junit.Test;

/**

*
@brief LuceneTest.java
测试Lucene的案例

*
@attention

*
@author
toto-pc

*
@date 2014-12-7

*
@note begin modify by
涂作权 2014/12/07 null

*/

public
class LuceneTest {

@Test

public
void buildIndex()
throws Exception {

Article article = new Article();

article.setId(100);

article.setTitle("Lucene快速入门");

article.setContent("Lucene是提供了一个简单却强大的应用程式接口，"

+ "能够做全文检索索引和搜寻，在Java开发环境里Lucene是"
+

"一个成熟的免费的开放源代码工具。");

//
将索引数据转换成为Document对象（Lucene要求）

Document document = new Document();

document.add(new Field("id",
//
字段

article.getId() + "", Store.YES,
//
是否建立索引

Index.ANALYZED
//
表示使用分词索引

));

document.add(new Field("title",
article.getTitle(), Store.YES,Index.ANALYZED));

document.add(new Field("content",
article.getContent(), Store.YES, Index.ANALYZED));

//
建立索引库

//
索引目录位置

Directory directory = FSDirectory.open(new
File("index"));//
当前Index目录

//
分词器

Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);

//
写入索引

IndexWriterConfig indexWriterConfig = new IndexWriterConfig(

Version.LUCENE_36, analyzer);

IndexWriter indexWriter = new IndexWriter(directory,
indexWriterConfig);

//
将document数据写入索引库

indexWriter.addDocument(document);

//
关闭索引

indexWriter.close();

}

}

运行后index目录下的结果：

public
void searchIndex()
throws Exception

{

//建立Query对象--根据标题

String queryString = "Lucene";

//第一个参数，版本号

//第二个参数，字段

//第三个参数，分词器

Analyzer analyzer = new
StandardAnalyzer(Version.LUCENE_36);

QueryParser queryParser = new QueryParser(Version.LUCENE_36,"title",analyzer);

Query query = queryParser.parse(queryString);

//根据Query查找

//
索引目录位置

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

IndexSearcher indexSearcher = new IndexSearcher(IndexReader.open(directory));

//查询满足结果的前100条数据

TopDocs topDocs = indexSearcher.search(query, 100);

System.out.println("满足结果记录条数："
+ topDocs.totalHits);

//获取结果

ScoreDoc[] scoreDocs = topDocs.scoreDocs;

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

//先获得Document下标

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();

}