Lucene.Net学习

学习夕阳轨迹的Lucene.Net开发介绍，做个测试

 

using System;
using System.Collections.Generic;
using System.Text;

namespace TestLucene
{
    using Lucene.Net.Index;
    using Lucene.Net.Store;
    using Lucene.Net.Analysis;
    using Lucene.Net.Analysis.Standard;
    using Lucene.Net.Documents;
    using Lucene.Net.Search;
    using Lucene.Net.QueryParsers;

    class Program
    {
        static void Main(string[] args)
        {
            Program p = new Program();
            p.Index();
            p.Searcher("测试");
        }

        /// <summary>
        /// 搜索
        /// </summary>
        /// <param name="querystring">搜索输入</param>
        private void Searcher(string querystring)
        {
            Analyzer analyzer = new StandardAnalyzer();
            IndexSearcher searcher = new IndexSearcher("index");
            QueryParser parser = new QueryParser("content", analyzer);
            Query query = parser.Parse(querystring);
            Hits hits = searcher.Search(query);
            for (int i = 0; i < hits.Length(); i++)
            {
                Document doc = hits.Doc(i);
                Console.WriteLine(doc.Get("content") + "得分：" + hits.Score(i).ToString("f2"));
            }
        }

        /// <summary>
        /// 索引数据
        /// </summary>
        private void Index()
        {
            Analyzer analyzer = new StandardAnalyzer();
            IndexWriter writer = new IndexWriter("index", analyzer, true);
            AddDocument(writer, "测试标题一", "测试内容一111", 1.9f);
            AddDocument(writer, "测试标题二", "测试内容二11", 1.8f);
            AddDocument(writer, "测试标题三", "测试内容三1", 1.0f);
            AddDocument(writer, "测试标题四", "测试内容四", 1.0f);
            writer.Optimize();
            writer.Close();
        }

        /// <summary>
        /// 为索引准备数据
        /// </summary>
        /// <param name="write">索引实例</param>
        /// <param name="title">标题</param>
        /// <param name="content">需要索引的数据</param>
        /// <param name="boost">权值</param>
        void AddDocument(IndexWriter write, string title, string content, float boost)
        {
            Document document = new Document();
            document.Add(new Field("title", title, Field.Store.YES, Field.Index.TOKENIZED));
            document.Add(new Field("content", content, Field.Store.YES, Field.Index.TOKENIZED));
            document.SetBoost(boost);
            write.AddDocument(document);
        }
    }
}