Lucene1

/**
* StandardAnalyzer解析器
* 1.按空格分词
* 2.所有大写字母转换成小写字母
* 3.去除无用的单词(is,the,are)
*/
public void getLucene1()
{
//创建一个标准分析器(StandardAnalyzer),用于分析搜索引擎遇到各种脚本
Analyzer analyzer = new StandardAnalyzer();
//测试字符串
StringReader sr = new StringReader("come Lucene in the Name"); //$NON-NLS-1$
//生成TokenStream对象
TokenStream tokenStream = analyzer.tokenStream("name", sr); //$NON-NLS-1$
try
{
int i = 0;
Token next = tokenStream.next();
while (next != null)
{
i++;
System.out.println("第" + i + "行：" + next.termText());
next = tokenStream.next();
}
}
catch (IOException e)
{
e.printStackTrace();
}
}

/**
* 建立索引，进行搜索
*/
public void getLucene2()
{
//进行索引的单元，将文件转化成Document对象进行索引
Document doc1 = new Document();
doc1.add(new Field("name", "lighter lighter lighter javaeye com",
Field.Store.YES, Field.Index.TOKENIZED));

Document doc2 = new Document();
doc2.add(new Field("name2", "lighter blog", Field.Store.YES,
Field.Index.TOKENIZED));

try
{
//在文档中加入索引
IndexWriter indexWriter = new IndexWriter(
FSDirectory.getDirectory("E:\\", true),
new StandardAnalyzer(), true);
indexWriter.setMaxFieldLength(3);
indexWriter.addDocument(doc1);

indexWriter.setMaxFieldLength(3);
indexWriter.addDocument(doc2);

indexWriter.close();

query("lighter");
query("javaeye");
}
catch (IOException e)
{
e.printStackTrace();
}
}

public void query(String str)
{
IndexSearcher indexSearche = new IndexSearcher(path);
QueryParser queryParser = new QueryParser("name",
new StandardAnalyzer());
Query query = queryParser.parse(str);
Hits hits = indexSearche.search(query);
System.out.println("查找\"" + str + "\"共" + hits.length() + "结果");
}