lucene 4.4 终于跑通了

需要jar包至少为 ：

lucene-analyzers-common-4.4.0.jar

lucene-core-4.4.0.jar

lucene-queryparser-4.4.0.jar

是否需要依赖包不知道了

可以到http://lucene.apache.org/下载zip解压缩后到各个文件夹里面找

首先在D盘新建两个文件夹D:/luceneIndex和D:/luceneData，在luceneData下面随便添加几个文本文件

然后生成索引，然后再根据索引开始搜索

生成索引的代码：执行以后在luceneIndex下面会出现几个文件package com.huateng.lucene;

package com.huateng.lucene;

import java.io.*;
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.LongField;
import org.apache.lucene.document.StringField;
import org.apache.lucene.document.TextField;
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;

public class TxtFileIndexer {

	public static void main(String[] args) throws Exception {
		File indexDir = new File("d:/luceneIndex");
		File dataDir = new File("D:/luceneData");
		Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_44);
		File[] dataFiles = dataDir.listFiles();
		IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_44,
				analyzer);
		Directory dir = FSDirectory.open(indexDir);
		IndexWriter indexWriter = new IndexWriter(dir, iwc);
		for (File file : dataFiles) {
			System.out.println(file.getPath());
			FileInputStream fis = new FileInputStream(file);
			Document doc = new Document();
			Field pathField = new StringField("path", file.getPath(),
					Field.Store.YES);
			doc.add(pathField);
			doc.add(new LongField("modified", file.lastModified(),
					Field.Store.NO));
			doc.add(new TextField("contents", new BufferedReader(
					new InputStreamReader(fis, "UTF-8"))));
			indexWriter.addDocument(doc);
		}
		indexWriter.close();
	}
}

执行搜索的代码

package com.huateng.lucene;
import java.io.*;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryparser.classic.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.FSDirectory;
import org.apache.lucene.util.Version;

public class TxtFileSearcher {

	public static void main(String[] args) throws Exception{
		String field = "contents";
		String queryStr = "lucene"; 
        File indexDir = new File("D:/luceneIndex"); 
        IndexReader reader = DirectoryReader.open(FSDirectory.open(indexDir));
        IndexSearcher searcher = new IndexSearcher(reader);
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_44);
        QueryParser parser = new QueryParser(Version.LUCENE_44, field, analyzer);
        Query query = parser.parse(queryStr);
        System.out.println("Searching for: " + query.toString(field));
        TopDocs results = searcher.search(query, 50);
        ScoreDoc[] hits = results.scoreDocs;
        int numTotalHits = results.totalHits;
        System.out.println(numTotalHits + " total matching documents");
        for(ScoreDoc sd:hits){
        	Document doc = searcher.doc(sd.doc);
        	System.out.println(doc.get("path"));
        }
        
	}
}

执行以后输出：

Searching for: lucene
2 total matching documents
D:\luceneData\a.txt
D:\luceneData\b.txt