Lucene 实战：快速开始 创建索引

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.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.NumericField;
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;

/**
 * 创建索引
 * 
 * @author Oliver
 * 
 */
public class Index {

	private static String indexPath = System.getProperty("user.dir") + "\\index";

	private static String dataPath = System.getProperty("user.dir") + "\\data";

	@Test
	public void createIndex() throws IOException {

		// 创建分词器
		Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_34);

		// 根据文件路径创建索引库
		Directory dir = FSDirectory.open(new File(indexPath));

		// 创建IndexWriter
		IndexWriterConfig conf = new IndexWriterConfig(Version.LUCENE_34, analyzer);
		IndexWriter writer = new IndexWriter(dir, conf);

		// 数据文件
		File[] dataFile = new File(dataPath).listFiles();
		// 添加文件
		for (File file : dataFile) {
			writer.addDocument(getDocument(file));
		}
		// 关闭
		writer.close();
	}

	/**
	 * 添加文件
	 * 
	 * @param file
	 * @return
	 * @throws FileNotFoundException
	 */
	private Document getDocument(File file) throws FileNotFoundException {
		Document doc = new Document();
		//文件内容
		doc.add(new Field("content", new FileReader(file)));
		//文件名字
		doc.add(new Field("filename", file.getName(), Field.Store.YES, Field.Index.NOT_ANALYZED));
		//文件路径
		doc.add(new Field("filepath", file.getAbsolutePath(), Field.Store.YES,
				Field.Index.NOT_ANALYZED));
		//文件大小
		doc.add( new NumericField("size").setLongValue(file.length()));
		return doc;
	}
}