lucene 根据 id 获取索引内容（C# / .NET）

封装代码如下：

        public MakerArtiImodel GetIndexModelById(int id)
        {
            string indexPath = StrHelper.rootPath + "XXXX/Index";
            FSDirectory directory = FSDirectory.Open(new DirectoryInfo(indexPath), new NoLockFactory());
            IndexReader reader = IndexReader.Open(directory, true);             //创建一个索引库读取对象
            IndexSearcher searcher = new IndexSearcher(reader);                 //创建一个搜索对象

            Term term = new Term("Id", id.ToString());
            Query query = new TermQuery(term);
            TopDocs topDocs = searcher.Search(query, 1);

            MakerArtiImodel mai = null;

            foreach (ScoreDoc scoreDoc in topDocs.ScoreDocs)
            {
                int docNum = scoreDoc.Doc;      //这里的docNum是在这个集合中的索引号
                Document doc = searcher.Doc(docNum);
                mai = new MakerArtiImodel
                {
                    Id = id,
                    Title = doc.Get("Title"),
                    splendidContent = doc.Get("splendidContent"),
                    categoryName = doc.Get("categoryName"),
                    matchedTrade = doc.Get("matchedTrade"),
                    postTime = Convert.ToDateTime(doc.Get("postTime")),
                };
            }

            return mai;
        }

调用：

　　　　MakerArtiImodel mai = MakerArtiIManager.Instance.GetIndexModelById(articleId);