Lucene.Net IndexSearcher index = new IndexSearcher(path);

Lucene.Net IndexSearcher index = new IndexSearcher(path);

不看源代码，你随便回答或者只是不负责任的回答，不是误导大家吗？！鄙视中。。

只要你有访问的权限，可以！
但是这个目录下要有SegmentFile,否则的话会出现下面的异常（segmentInfos.cs --Line:761）
throw new System.IO.FileNotFoundException("no segments* file found in " + directory + ": files:" + s);

明显不会…不过看旁边那位的回答实在无语，偏得厉害

IndexReader reader = IndexReader.open(IDNEX_PATH); QueryParser parser = new QueryParser("content", analyzer); Query query = parser.parse("你好")

一般中文都是用google的paoding分词。。你可以去google免费下载使用
如果是lucene可以自定义Field啊？
晕。。要例子。。贴一个给你：paoding的标准文档例子：
String IDNEX_PATH = "E:/paoding_test_index";

//获取Paoding中文分词器

Analyzer analyzer = new PaodingAnalyzer();

//建立索引

IndexWriter writer = new IndexWriter(IDNEX_PATH, analyzer, true);

Document doc = new Document();

Field field = new Field("content", "你好，世界!", Field.Store.YES,

Field.Index.TOKENIZED, Field.TermVector.WITH_POSITIONS_OFFSETS);

doc.add(field);

writer.addDocument(doc);

writer.close();

System.out.println("Indexed success!");

//检索

IndexReader reader = IndexReader.open(IDNEX_PATH);

QueryParser parser = new QueryParser("content", analyzer);

Query query = parser.parse("你好");

Searcher searcher = new IndexSearcher(reader);

Hits hits = searcher.search(query);

if (hits.length() == 0) {

System.out.println("hits.length=0");

}

Document doc2 = hits.doc(0);

//高亮处理

String text = doc2.get("content");

TermPositionVector tpv = (TermPositionVector) reader.getTermFreqVector(

0, "content");

TokenStream ts = TokenSources.getTokenStream(tpv);

Formatter formatter = new Formatter() {

public String highlightTerm(String srcText, TokenGroup g) {

if (g.getTotalScore() <= 0) {

return srcText;

}

return "" + srcText + "";

}

};

Highlighter highlighter = new Highlighter(formatter, new QueryScorer(

query));

String result = highlighter.getBestFragments(ts, text, 5, "…");

System.out.println("result:\n\t" + result);