microgao

microgao - by - 16 六月, 2006 17:02

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Diagnostics;
using System.Drawing;
using System.IO;

using Lucene.Net.Analysis.Standard;
using Lucene.Net.Documents;
using Lucene.Net.Index;
using Lucene.Net.QueryParsers;
using Lucene.Net.Search;
using DesktopSearch1.Icons;
using DesktopSearch1.Parsing;

namespace DesktopSearch1
{

public partial class _Default : System.Web.UI.Page
{
private string pathIndex;
private IndexWriter indexWriter;
private string[] patterns = { "*.doc", "*.xls", "*.ppt", "*.htm", "*.txt" };
public System.Web.UI.WebControls.Label labelStatus;
private IndexSearcher searcher = null;

protected void Page_Load(object sender, EventArgs e)
{
Messagebox.Text = " ";
this.pathIndex = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "DesktopSearch");
checkIndex();
}
protected void TextBox1_TextChanged(object sender, EventArgs e)
{

}

private void addFolder(DirectoryInfo directory)
{
// find all matching files
foreach (string pattern in patterns)
{
foreach (FileInfo fi in directory.GetFiles(pattern))
{
// skip temporary office files
if (fi.Name.StartsWith("~"))
continue;

try
{
//addOfficeDocument(fi.FullName);

// update statistics
// this.countTotal++;
//this.bytesTotal += fi.Length;

// show added file
Response.Write(fi.FullName);
}
catch (Exception)
{
// parsing and indexing wasn't successful, skipping that file
// this.countSkipped++;
Response.Write("Skipped: " + fi.FullName);
}
}
}
// add subfolders
foreach (DirectoryInfo di in directory.GetDirectories())
{
addFolder(di);
}
}

protected void create_Click(object sender, EventArgs e)
{
indexWriter = new IndexWriter("c:index", new StandardAnalyzer(), true);

//bytesTotal = 0;
//countTotal = 0;
//countSkipped = 0;

//enableControls(false);

DirectoryInfo di = new DirectoryInfo("c:gaoyu");

DateTime start = DateTime.Now;

addFolder(di);

//string summary = "成功建立索引";
//status(summary);
Messagebox.Text = "成功建立索引";
//enableControls(true);

indexWriter.Optimize();
indexWriter.Close();
}

private void search1()
{
DateTime start = DateTime.Now;

try
{
searcher = new IndexSearcher("c:index");

// this.listViewResults.Items.Clear();

// Parse the query, "text" is the default field to search
if (this.TextBox1.Text.Trim(new char[] { ' ' }) == String.Empty)
return;

Query query = QueryParser.Parse(this.TextBox1.Text, "text", new StandardAnalyzer());

// Search
Hits hits = searcher.Search(query);

Response.Write("ddd");
// Optionally limit the result count
// int resultsCount = smallerOf(20, hits.Length());

for (int i = 0; i < hits.Length(); i++)
{

// get the document from index
Document doc = hits.Doc(i);

// create a new row with the result data
string filename = doc.Get("title");
string path = doc.Get("path");
string folder = Path.GetDirectoryName(path);
DirectoryInfo di = new DirectoryInfo(folder);
Response.Write(filename);
Messagebox.Text = (filename);
//ListViewItem item = new ListViewItem(new string[] { null, filename, di.Name, hits.Score(i).ToString() });
//item.Tag = path;
//item.ImageIndex = imageListDocuments.IconIndex(filename);
//this.listViewResults.Items.Add(item);
//Application.DoEvents();
}
// searcher.Close();
}
catch (IOException ex)
{
Response.Write("The index doesn't exist or is damaged. Please rebuild the index.rnrnDetails:rn" + ex.Message);
return;
}
finally
{
searcher.Close();
}
// Response.Write("Search took {0}. Found {1} items.");
// status(searchReport);
}

public void search_Click(object sender, EventArgs e)
{
//Response.Write("The index");
search1();
}

private void checkIndex()
{
try
{
searcher = new IndexSearcher("c:index");
searcher.Close();
}
catch (IOException)
{
Response.Write("索引已经损坏或丢失.请重建.");
return;
}

string msg = String.Format("索引已经存在", searcher.MaxDoc());
Response.Write(msg);
}
}
}

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