以下代码在Lucene2.1下通过，主要是通过设置Document的Boost来影响文档的权重，以达到控制查询结果顺序的目的(前提是不利用Sort排序的情况下):
private
void
btnSearch_Click(
object
sender, EventArgs e)
{
RAMDirectory ramDir = new RAMDirectory(); IndexWriter iw = new IndexWriter(ramDir,new StandardAnalyzer(),true);
string[] NameList = { "you are my friend", "you are my wife", "I love you" }; string[] FileList = { "1", "2", "3" }; for (int i = 0; i < NameList.Length; i++) { Document doc = new Document(); doc.Add(new Field("name", NameList[i], Field.Store.YES, Field.Index.TOKENIZED)); doc.Add(new Field("file", FileList[i], Field.Store.YES, Field.Index.TOKENIZED)); if (i == 2) { doc.SetBoost(2.0f); }//这里设置了第三个文档优先级最高，所以在搜索出来的结果中，该文档排在最前 iw.AddDocument(doc);
} iw.Close(); IndexSearcher _searcher = new IndexSearcher(ramDir); QueryParser _parser = new QueryParser("name",new StandardAnalyzer()); Query _query = _parser.Parse("you"); Hits hitDoc = _searcher.Search(_query); lstResult.Items.Clear();//lstResult为一个ListBox for (int i = 0; i < hitDoc.Length(); i++) { Document doc = hitDoc.Doc(i); lstResult.Items.Add(doc.Get("file") + " " + doc.Get("name")); } _searcher.Close();
}
