lucene全文检索word内容

创建索引 Lucene 3.0+

package test;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.DateTools;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.SimpleFSDirectory;
import org.apache.lucene.util.Version;
import org.apache.poi.hwpf.extractor.WordExtractor;
/**
 * 创建索引 Lucene 3.0+
 * @author Administrator
 *
 */
public class LuceneTest {

/**
 * @param args
 * @throws IOException 
 */
public static void main(String[] args) throws IOException {
//保存索引文件的地方
String indexDir = "D:\\indexDir";
//将要搜索word文件的地方
String dateDir = "D:\\dateDir";
IndexWriter indexWriter = null;
//创建Directory对象
Directory dir = new SimpleFSDirectory(new File(indexDir));
//创建IndexWriter对象,第一个参数是Directory,第二个是分词器,第三个表示是否是创建,如果为false为在此基础上面修改,第四表示表示分词的最大值，比如说new MaxFieldLength(2)，就表示两个字一分，一般用IndexWriter.MaxFieldLength.LIMITED 
indexWriter = new IndexWriter(dir,new StandardAnalyzer(Version.LUCENE_30),true,IndexWriter.MaxFieldLength.UNLIMITED);
File[] files = new File(dateDir).listFiles();
for (int i = 0; i < files.length; i++) {
Document doc = new Document();
InputStream in = new FileInputStream(files[i]);
WordExtractor w = new WordExtractor(in);
//创建Field对象，并放入doc对象中
doc.add(new Field("contents", w.getText(),Field.Store.YES,Field.Index.ANALYZED)); 
doc.add(new Field("filename", files[i].getName(), 
Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.add(new Field("indexDate",DateTools.dateToString(new Date(), DateTools.Resolution.DAY),Field.Store.YES,Field.Index.NOT_ANALYZED));
//写入IndexWriter
indexWriter.addDocument(doc);
}
//查看IndexWriter里面有多少个索引
System.out.println("numDocs"+indexWriter.numDocs());
indexWriter.close();

}

}

搜索索引 Lucene 3.0+

package test;

import java.io.File;
import java.io.IOException;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.queryParser.ParseException;
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.SimpleFSDirectory;
import org.apache.lucene.util.Version;
/**
 * 搜索索引 Lucene 3.0+
 * @author Administrator
 *
 */
public class LuceneSearch {

public static void main(String[] args) throws IOException, ParseException {
//保存索引文件的地方
String indexDir = "D:\\indexDir";
Directory dir = new SimpleFSDirectory(new File(indexDir));
//创建 IndexSearcher对象，相比IndexWriter对象，这个参数就要提供一个索引的目录就行了
IndexSearcher indexSearch = new IndexSearcher(dir);
//创建QueryParser对象,第一个参数表示Lucene的版本,第二个表示搜索Field的字段,第三个表示搜索使用分词器
QueryParser queryParser = new QueryParser(Version.LUCENE_30,
"contents", new StandardAnalyzer(Version.LUCENE_30));
//生成Query对象
Query query = queryParser.parse("高铁");
//搜索结果 TopDocs里面有scoreDocs[]数组，里面保存着索引值
TopDocs hits = indexSearch.search(query, 10);
//hits.totalHits表示一共搜到多少个
System.out.println("找到了"+hits.totalHits+"个");
//循环hits.scoreDocs数据，并使用indexSearch.doc方法把Document还原，再拿出对应的字段的值
for (int i = 0; i < hits.scoreDocs.length; i++) {
ScoreDoc sdoc = hits.scoreDocs[i];
Document doc = indexSearch.doc(sdoc.doc);
System.out.println(doc.get("filename"));
}
indexSearch.close();
}
}

用到的jar包：

lucene-core-3.0.3.jar

poi-3.7-20101029.jar

poi-ooxml-3.7-20101029.jar

poi-ooxml-schemas-3.7-20101029.jar

poi-scratchpad-3.7-20101029.jar