lucene创建索引

来源：互联网发布：2017网络新技术编辑：程序博客网时间：2024/05/21 06:37
package org.lucene.createindex;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.index.CorruptIndexException;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.index.IndexWriterConfig.OpenMode;import org.apache.lucene.store.FSDirectory;import org.apache.lucene.store.LockObtainFailedException;import org.apache.lucene.util.Version;import org.wltea.analyzer.lucene.IKAnalyzer;public class CreateIndex {public static void main(String[] args) throws CorruptIndexException,LockObtainFailedException, Exception {// 1.创建索引的存放地File index = new File("C:\\suoyin");IKAnalyzer ikAnalyzer = new IKAnalyzer();IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_36,ikAnalyzer).setOpenMode(OpenMode.CREATE);IndexWriter indexWriter = new IndexWriter(FSDirectory.open(index), iwc);//2.获取本地文件夹中的文件File[] textFiles = new File("C:\\source").listFiles();//3循环文件判断是不是.txt文件for (int j = 0; j < textFiles.length; j++) {if (textFiles[j].isFile() && textFiles[j].getName().endsWith(".txt")) {//4如果是的话就读取里面的文本，并且new一个document（Document document = new Document();）String fileContent = FileReaderAll(textFiles[j].getCanonicalPath(),"GBK");//5new Document()新建一个文档Document document = new Document();Field FieldBody = new Field("fileContent", fileContent, Field.Store.YES,   Field.Index.ANALYZED);document.add(FieldBody);Field fileName = new Field("mm", textFiles[j].getName(), Field.Store.NO,   Field.Index.NOT_ANALYZED);document.add(fileName);//6.最后往索引文件夹里面写索引indexWriter.addDocument(document);}}System.out.println("创建索引成功");indexWriter.close();   // 这里不关闭建立索引会失败 }private static String FileReaderAll(String FileName, String charset) throws Exception {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; }}
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