lucene.net学习 -ag凯发k8国际

          很早就知道lucene.net但一直都没时间认真实践一下.最近项目需要.所以考虑学习一下lucene.net引擎.终于做出了第一个demo感觉挺实用的.还不错.代码贴上.各位博友可参考学习一下.

        protected void btnaddindex_click(object sender, eventargs e)
        {
            writer = new indexwriter(server.mappath("index"), new lucene.net.analysis.simpleanalyzer(), false);
            indexdirectory(writer, new fileinfo(server.mappath("doc")));
            writer.close();
        }
        public void indexdirectory(indexwriter writer, fileinfo file)
        {
            if (system.io.directory.exists(file.fullname))
            {
                string[] files = system.io.directory.getfilesystementries(file.fullname);
                if (files != null)
                {
                    for (int i = 0; i < files.length; i )
                    {
                        indexdirectory(writer, new fileinfo(files[i])); 
                    }
                }
            }
            else if (file.extension == ".txt" || file.extension == ".htm" || file.extension == ".html")
            {
                indexfile(file, writer);
            }
        }

        private void indexfile(fileinfo file, indexwriter writer)
        {
            try
            {
                document doc = new document();
                txtlistindex.text = txtlistindex.text "\n文件路径:" file.fullname;
                doc.add(field.keyword("filename", path.getfilename(file.fullname).replace(file.extension,"")));
                //doc.add(field.text("contents", new streamreader(file.fullname, system.text.encoding.default)));
                doc.add(field.text("contents", file.fullname));
                writer.adddocument(doc);
            }
            catch (filenotfoundexception fnfe)
            {
                response.write(fnfe.message);
            }
        }

        protected void button1_click(object sender, eventargs e)
        {
            indexsearcher searcher = new indexsearcher(server.mappath("index"));

            query query = queryparser.parse("linux", "filename", new lucene.net.analysis.whitespaceanalyzer());

            hits hits = searcher.search(query);

            if (hits.length() > 0)
            {
                for (int num = 0; num <= hits.length() - 1; num )
                {
                    document docnew = hits.doc(num);
                    txtlistindex.text = txtlistindex.text "\n" docnew.get("contents");
                }
            }
        }

转载于:https://www.cnblogs.com/witer666/archive/2008/04/26/1172597.html

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