RebuildLucene

最新推荐文章于 2025-07-22 23:25:27 发布

iteye_1575

最新推荐文章于 2025-07-22 23:25:27 发布

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分类专栏： luence 文章标签： java

本文链接：https://blog.youkuaiyun.com/iteye_1575/article/details/82608673

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本文介绍了一种使用Lucene进行大规模索引重建的方法。该方法通过遍历数据集，为每条记录创建一个Lucene文档，并将其添加到索引中。此外，还涉及了如何在重建完成后替换旧索引的过程。

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package com.yulong.lucene.biz;

import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.log4j.Logger;
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 com.yulong.lucene.core.LuceneContacts;
import com.yulong.lucene.util.RequestUtil;

/**
* LUCENE重新写入大批量索引
*
* @author fyh
*/
public class RebuildLucene
{

private static final Logger LOG = Logger.getLogger(RebuildLucene.class);

private String path = "";

public RebuildLucene(String path)
{

this.path = RequestUtil.ChangePath(path);
}

/**
* 写入索引数据
*
* @param map
*/
public boolean write1(List<Map<String, String>> list)
{

IndexWriter iwriter = null;
try
{
iwriter = LuceneContacts.iwpool.get(path + "rebuild/", this.toString());
for (Map<String, String> map : list)
{
Document doc = new Document();
for (Iterator<String> it = map.keySet().iterator(); it.hasNext();)
{
String key = RequestUtil.VailStr(it.next(), "");
String value = RequestUtil.VailStr(map.get(key), "");
if (key != "")
doc.add(new Field(key, value, Field.Store.YES, Field.Index.ANALYZED));
}
if (map.size() > 0)
{
iwriter.addDocument(doc);
}
}
// iwriter.close();
LOG.info("LUCENE重新写入大批量索引成功!");
}
catch (Exception e)
{
e.printStackTrace();
return false;
}
finally
{
try
{
if (iwriter != null)
{
iwriter.close();
}
}
catch (CorruptIndexException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return true;
}

public boolean write(List<Map<String, String>> list)
{

boolean res = this.write1(list);
if (res)
{
res = new MoveLuceneRebuild().move(path);// 替换当前重编译后的索引
}
return res;
}
}