Lucene学习笔记

package com.fxr.demo2;

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.index.IndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;

public class TestIndex {
	
	public static void main(String[] args) throws IOException {
		String [] ids = {"1","2","3"};
		String [] names = {"zhangsan","lisi","wangwu"};
		String [] addresses = {"zhengzhou","shanghai","beijing"};
		
		Analyzer analyzer = new StandardAnalyzer();//标准的分词器
		String indexDir = "f:/lucenefxrindex";
		Directory dir=FSDirectory.getDirectory(indexDir);//索引存放的位置
		
		//TRUE 表示创建或者覆盖当前的索引；FALSE表示对当前的索引进行追加
		//default 的值是128
		IndexWriter indexWriter = new IndexWriter(dir,analyzer,true,IndexWriter.MaxFieldLength.LIMITED);
		
		for(int i=0;i<ids.length;i++){
			Document document = new Document();
			document.add(new Field("id",ids[i],Field.Store.YES,Field.Index.ANALYZED));
			document.add(new Field("name",names[i],Field.Store.YES,Field.Index.ANALYZED));
			document.add(new Field("address",addresses[i],Field.Store.YES,Field.Index.ANALYZED));
			indexWriter.addDocument(document);
			
		}
	
		indexWriter.optimize();
		indexWriter.close();
		
		
	}

	

	
	
	
}

package com.fxr.demo2;

import java.io.IOException;

import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;

public class TestDelete {

	public static void main(String[] args) throws IOException {
		String indexDir = "f:/lucenefxrindex";
		Directory dir=FSDirectory.getDirectory(indexDir);
		IndexReader reader=IndexReader.open(dir);
		System.out.println(reader.maxDoc());
		//reader.deleteDocument(0);
		System.out.println(reader.maxDoc());
		
		System.out.println(reader.deleteDocuments(new Term("id","2")));
		System.out.println(reader.numDocs());
		reader.close();
		dir.close();




	}
}