lucene测试类

package test.lucene;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Date;

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.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.IndexWriterConfig.OpenMode;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;

public class TextFileIndexer {
public static void main(String[] args) throws Exception {
/* 指明要索引文件夹的位置,这里是C盘的source文件夹下 */
File fileDir = new File("C:\\source");
/* 这里放索引文件的位置 */
File indexDir = new File("C:\\index");
Directory dir=FSDirectory.open(indexDir);
Analyzer analyzer=new StandardAnalyzer(Version.LUCENE_36);
IndexWriterConfig indexWriterConfig=new IndexWriterConfig(Version.LUCENE_36, analyzer);
indexWriterConfig.setOpenMode(OpenMode.CREATE);
IndexWriter indexWriter = new IndexWriter(dir,indexWriterConfig);
File[] textFiles = fileDir.listFiles();
long startTime = new Date().getTime();
//增加document到索引去
for (int i = 0; i < textFiles.length; i++) {
if (textFiles[i].isFile()
&& textFiles[i].getName().endsWith(".txt")) {
System.out.println("File " + textFiles[i].getCanonicalPath()
+ "正在被索引....");
String temp = FileReaderAll(textFiles[i].getCanonicalPath(),
"GBK");
System.out.println(temp);
Document document = new Document();
//建立field
Field FieldPath = new Field("path", textFiles[i].getPath(),
Field.Store.YES, Field.Index.NO);
Field FieldBody = new Field("body", temp, Field.Store.YES,
Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS);
//添加到document.
document.add(FieldPath);
document.add(FieldBody);
//添加到indexWriter中.
indexWriter.addDocument(document);
}
}
indexWriter.close();

//测试一下索引的时间
long endTime = new Date().getTime();
System.out
.println("这花费了"
+ (endTime - startTime)
+ " 毫秒来把文档增加到索引里面去!"
+ fileDir.getPath());
}
public static String FileReaderAll(String FileName, String charset) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(
new FileInputStream(FileName), charset));
String line = new String();
String temp = new String();

while ((line = reader.readLine()) != null) {
temp += line;
}
reader.close();
return temp;
}
}