//需要添加PanGu.HighLight.dll的引用
/// <summary>
/// 搜索结果高亮显示
/// </summary>
/// <param name="keyword"> 关键字 </param>
/// <param name="content"> 搜索结果 </param>
/// <returns> 高亮后结果 </returns>
public static string HightLight(string keyword, string content)
{
var preTag = "<font style=\"font-style:normal;color:#cc0000;\"><b>";
var postTag = "</b></font>";
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter(preTag, postTag);
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 256;
var allFragment = highlighter.GetFragments(keyword, content, 50);
var result = GetBestMatchFragment(keyword, allFragment, preTag, postTag);
if (result.IsNullOrEmpty())
{
result = highlighter.GetBestFragment(keyword, content);
}
if (!string.IsNullOrWhiteSpace(result))
{
return(result);
}
return(content.Left(200));
}
public string CreateHightLight(string keywords, string content)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color='#dd4b39'>", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 150;
return(highlighter.GetBestFragment(keywords, content));
}
/// <summary>
/// 获取关键词高亮的摘要内容
/// </summary>
/// <param name="content">原始内容</param>
/// <param name="keywords">关键词</param>
/// <returns></returns>
private string GetHightContent(string content, string keywords)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<span style='color:red'>", "</span>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
highlighter.FragmentSize = 100; //设置每个摘要段的字符数
return(highlighter.GetBestFragment(keywords, content)); //获取最匹配的摘要段
}
private string Preview(string body, string keyword)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"Red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
highlighter.FragmentSize = 100;
string bodyPreview = highlighter.GetBestFragment(keyword, body);
return(bodyPreview);
}
/// <summary>
/// 在title和content字段中查询数据
/// </summary>
/// <param name="keyword"></param>
/// <returns></returns>
public List <MySearchUnit> Search(string keyword)
{
string[] fileds = { "title", "content" };//查询字段
//Stopwatch st = new Stopwatch();
//st.Start();
QueryParser parser = null; // new QueryParser(Lucene.Net.Util.Version.LUCENE_30, field, analyzer);//一个字段查询
parser = new MultiFieldQueryParser(version, fileds, analyzer); //多个字段查询
Query query = parser.Parse(keyword);
int n = 1000;
IndexSearcher searcher = new IndexSearcher(directory_luce, true);//true-表示只读
TopDocs docs = searcher.Search(query, (Filter)null, n);
if (docs == null || docs.TotalHits == 0)
{
return(null);
}
else
{
List <MySearchUnit> list = new List <MySearchUnit>();
int counter = 1;
foreach (ScoreDoc sd in docs.ScoreDocs)//遍历搜索到的结果
{
try
{
Document doc = searcher.Doc(sd.Doc);
string id = doc.Get("id");
string title = doc.Get("title");
string content = doc.Get("content");
string flag = doc.Get("flag");
string imageurl = doc.Get("imageurl");
string updatetime = doc.Get("updatetime");
string createdate = doc.Get("createdate");
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
content = highlighter.GetBestFragment(keyword, content);
string titlehighlight = highlighter.GetBestFragment(keyword, title);
if (titlehighlight != "")
{
title = titlehighlight;
}
list.Add(new MySearchUnit(id, title, content, flag, imageurl, updatetime));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
counter++;
}
return(list);
}
//st.Stop();
//Response.Write("查询时间：" + st.ElapsedMilliseconds + " 毫秒<br/>");
}
/// <summary>
/// 在传递的字段数组中查询数据
/// </summary>
/// <param name="keyword"></param>
/// <returns>返回</returns>
public List <T> Search <T>(string keyword, string[] fields, T objType)
{
//fields = new string[]{ "title", "content" };//查询字段
//Stopwatch st = new Stopwatch();
//st.Start();
QueryParser parser = null; // new QueryParser(Lucene.Net.Util.Version.LUCENE_30, field, analyzer);//一个字段查询
parser = new MultiFieldQueryParser(version, fields, analyzer); //多个字段查询
Query query = parser.Parse(keyword);
int n = 1000;
IndexSearcher searcher = new IndexSearcher(directory_luce, true);//true-表示只读
List <T> list = new List <T>();
TopDocs docs = searcher.Search(query, (Filter)null, n);
if (docs == null || docs.totalHits == 0)
{
return(list);
}
else
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font style='color:red'>", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
foreach (ScoreDoc sd in docs.scoreDocs)//遍历搜索到的结果
{
try
{
//获取对象
Document doc = searcher.Doc(sd.doc);
Type t = objType.GetType();
T obj = (T)Activator.CreateInstance(t, true);
PropertyInfo[] propertyList = t.GetProperties();
//设置对象，并填充搜索到的数据至对象
foreach (PropertyInfo property in propertyList)
{
string strPName = property.Name;
string strValue = doc.Get(strPName);
if (fields != null && fields.Contains(strPName))
{
string strHighterValue = highlighter.GetBestFragment(keyword, strValue);
strValue = strHighterValue == "" ? strValue : strHighterValue;
}
property.SetValue(obj, strValue, null);
}
list.Add(obj);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
return(list);
}
//st.Stop();
//Response.Write("查询时间：" + st.ElapsedMilliseconds + " 毫秒<br/>");
}
public static string ChangeStringToHighLight(string keyWord, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>"); //创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 50;
//获取最匹配的摘要段
return highlighter.GetBestFragment(keyWord, content);
}
/// <summary>
/// search
/// </summary>
/// <param name="indexDir"></param>
/// <param name="q">keyword</param>
/// <param name="pageLen">every page's length</param>
/// <param name="pageNo">page number</param>
/// <param name="recCount">result number</param>
/// <returns></returns>
public List <TDocs> Search(String q, int pageLen, int pageNo, out int recCount)
{
string keywords = q;
IndexSearcher search = new IndexSearcher(INDEX_DIR);
q = GetKeyWordsSplitBySpace(q, new PanGuTokenizer());
QueryParser queryParser = new QueryParser("content", new PanGuAnalyzer(true));
Query query = queryParser.Parse(q);
Hits hits = search.Search(query, Sort.RELEVANCE);
List <TDocs> result = new List <TDocs>();
recCount = hits.Length();
int i = (pageNo - 1) * pageLen;
while (i < recCount && result.Count < pageLen)
{
TDocs docs = null;
try
{
docs = new TDocs();
docs.Path = hits.Doc(i).Get("path");
docs.Name = hits.Doc(i).Get("name");
docs.Title = hits.Doc(i).Get("title");
docs.Extension = hits.Doc(i).Get("ext");
//rem this item in case the search result will be too large & consume too much memory,
// takes loading time, abstract is enough
//docs.Content = hits.Doc(i).Get("content");
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<color=red>", "</color>");
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
highlighter.FragmentSize = 100;
docs.Abstract = highlighter.GetBestFragment(keywords, hits.Doc(i).Get("content"));
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
finally
{
result.Add(docs);
i++;
}
}
search.Close();
return(result);
}
public static string CreateHighLight(string keywords, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");//同过改变字体颜色，实现高亮显示
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 50;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(keywords, content));
}
/// <summary>
/// 创建HTMLFormatter,参数为高亮单词的前后缀
/// </summary>
/// <param name="keywords"></param>
/// <param name="Content"></param>
/// <returns></returns>
public static string CreateHightLight(string keywords, string Content)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//创建Highlighter ，输入HTMLFormatter 和盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 150;
//获取最匹配的摘要段
return highlighter.GetBestFragment(keywords, Content);
}
//需要添加PanGu.HighLight.dll的引用
/// <summary>
/// 搜索结果高亮显示
/// </summary>
/// <param name="keyword"> 关键字 </param>
/// <param name="content"> 搜索结果 </param>
/// <returns> 高亮后结果 </returns>
public static string HightLight(string keyword, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font style=\"font-style:normal;color:#cc0000;\"><b>", "</b></font>");
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 1000;
//获取最匹配的摘要段
return highlighter.GetBestFragment(keyword, content);
}
/// <summary>
/// 创建HTMLFormatter,参数为高亮单词的前后缀
/// </summary>
/// <param name="msg">原始搜索内容</param>
/// <param name="Content">字段里的值</param>
/// <returns></returns>
public static string CreateHightLight(string msg, string Content)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//创建Highlighter ，输入HTMLFormatter 和盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 150;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(msg, Content));
}
/// <summary>
/// 搜索结果中关键词高亮显示
/// </summary>
/// <param name="keyword"></param>
/// <param name="content"></param>
/// <returns></returns>
static string HightLight(string keyword, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<em>", "<em>");
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 1000;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(keyword, content));
}
public static string HightLight(string keyword, string content, int iFragmentSize)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font style=\"font-style:normal;color:#cc0000;\"><b>", "</b></font>");
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = iFragmentSize;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(keyword, content));
}
/// <summary>
/// 进行高亮显示搜索词
/// </summary>
/// <param name="keywords"></param>
/// <param name="Content"></param>
/// <returns></returns>
public static string CreateHightLight(string keywords, string Content)
{
// 注意：在后台加 HTML标签会导致前台原样输出，可以通过
// @MvcHtmlString.Create(book.Content)来解决
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//创建Highlighter ，输入HTMLFormatter 和盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 150;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(keywords, Content));
}
//高亮显示
public static string CreateHightLight(string keywords, string Content)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//创建Highlighter ，输入HTMLFormatter 和盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 150;
//获取最匹配的摘要段
var result = highlighter.GetBestFragment(keywords, Content);
return(string.IsNullOrEmpty(result) ? Content : result);
}
/// <summary>
/// 将内容中的某些部分高亮（可以针对所有的字符执行）
/// </summary>
/// <param name="keyword">要高亮显示的关键词</param>
/// <param name="content">含有关键词的内容</param>
/// <returns>如果内容中含有关键词将其高亮返回，如果没有，则返回内容</returns>
public static String highLight(string keyword, String content)
{
PanGu.HighLight.SimpleHTMLFormatter formatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color='red'>", "</font>"); //高亮部分的表现方式，即前后要加的标签
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(formatter, new Segment()); //两个参数的意义1、高亮的表现形式；2、要高亮显示的关键词，并进行分词
highlighter.FragmentSize = 800; //要显示的长度
string msg = highlighter.GetBestFragment(keyword, content); //要上面要求返回的字符
if (string.IsNullOrEmpty(msg))
{
return(content);
}
else
{
return(msg);
}
}
/// <summary>
/// 对搜索的关键词高亮显示
/// </summary>
/// <param name="keyword">搜索的关键词项</param>
/// <param name="content"></param>
/// <returns></returns>
public static string Highlight(string keyword, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<a href='#' class='highlightshow'>", "</a>");
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
//设置每个摘要段的字符数，暂时取300个字符吧
highlighter.FragmentSize = 300;
//获取最匹配的摘要段
return(highlighter.GetBestFragment(keyword, content));
}
private static VM.SearchModel SetHighlighter(Dictionary <string, string> dicKeywords, VM.SearchModel model)
{
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
highlighter.FragmentSize = 100;
string strContent = string.Empty;
dicKeywords.TryGetValue("Content", out strContent);
if (!string.IsNullOrEmpty(strContent))
{
model.Contents = highlighter.GetBestFragment(strContent, model.Contents) + "...";
//model.Content = string.Join("...", (highlighter.GetFragments(strContent, model.Content,3).ToList()));
}
return(model);
}
//需要添加PanGu.HighLight.dll的引用
/// <summary>
/// 搜索结果高亮显示
/// </summary>
/// <param name="keyword"> 关键字 </param>
/// <param name="content"> 搜索结果 </param>
/// <returns> 高亮后结果 </returns>
public static string HightLight(string keyword, string content)
{
//创建HTMLFormatter,参数为高亮单词的前后缀
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<span class='hightlight'>", "</span>");
//创建 Highlighter ，输入HTMLFormatter 和 盘古分词对象Semgent
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
//设置每个摘要段的字符数
highlighter.FragmentSize = 1000;
//获取最匹配的摘要段
var result = highlighter.GetBestFragment(keyword, content);
if (string.IsNullOrEmpty(result))
{
return(content);
}
return(result);
}
/// <summary>
/// 设置高亮
/// </summary>
/// <param name="body"></param>
/// <param name="keyword"></param>
/// <returns></returns>
private string Preview(string body, string keyword)
{
int FragmentSize = __SearchAppGaoLiangMaxLength;
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<em class='DataKey'>", "</em>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
highlighter.FragmentSize = FragmentSize;
string bodyPreview = highlighter.GetBestFragment(keyword, body);
if (string.IsNullOrEmpty(bodyPreview))
{
if (body.Length > FragmentSize)
{
bodyPreview = body.Substring(0, FragmentSize);
}
else
{
bodyPreview = body;
}
}
return(bodyPreview);
}
private void button2_Click(object sender, EventArgs e)
{
PanGu.Segment.Init();
PanGu.Segment segment = new PanGu.Segment();
ICollection <PanGu.WordInfo> words = segment.DoSegment("山东落花生花落东山，长春市长春花店");
foreach (var word in words)
{
Console.WriteLine(word.Word);
}
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 100; // 设置每个摘要段的字符数
string keywords = "信号/道路/开通";
string content = @"高德完胜百度。我专门花了几个星期，在我所在的城市测试两个地图，高德数据不准确在少数，而百度就是家常便饭了，表现为：
已经管制一年的道路（双向变单向），百度仍然提示双向皆可走。
已经封闭数年的道路，百度仍然说是通的。
新修道路，还没有开通，百度居然让走。
有时候规划路线时明明是正确的，但是导航过程中，就出乱子，信号没问题、路线不复杂，明明是要左转，百度却叫右转。";
string abs = highlighter.GetBestFragment(keywords, content);
Console.WriteLine(abs);
}
public static List<TNews> Search(String indexDir, String q, int pageLen, int pageNo, out int recCount)
{
string keywords = q;
IndexSearcher search = new IndexSearcher(indexDir);
q = GetKeyWordsSplitBySpace(q, new PanGuTokenizer());
QueryParser queryParser = new QueryParser("contents", new PanGuAnalyzer(true));
Query query = queryParser.Parse(q);
Hits hits = search.Search(query);
List<TNews> result = new List<TNews>();
recCount = hits.Length();
int i = (pageNo - 1) * pageLen;
while (i < recCount && result.Count < pageLen)
{
TNews news = null;
try
{
news = new TNews();
news.Title = hits.Doc(i).Get("title");
news.Content = hits.Doc(i).Get("contents");
news.Url = hits.Doc(i).Get("url");
String strTime = hits.Doc(i).Get("time");
news.Time = DateTime.ParseExact(strTime, "yyyyMMdd", null);
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
highlighter.FragmentSize = 50;
news.Abstract = highlighter.GetBestFragment(keywords, news.Content);
//// ������ʾ����
////TermQuery tQuery = new TermQuery(new Term("contents", q));
//SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//Highlighter highlighter = new Highlighter(simpleHTMLFormatter, new QueryScorer(query));
////�ؼ�������ʾ��С����
//highlighter.SetTextFragmenter(new SimpleFragmenter(50));
////ȡ��������ʾ����
//Lucene.Net.Analysis.KTDictSeg.KTDictSegAnalyzer analyzer = new Lucene.Net.Analysis.KTDictSeg.KTDictSegAnalyzer();
//TokenStream tokenStream = analyzer.TokenStream("contents", new StringReader(news.Content));
//news.Abstract = highlighter.GetBestFragment(tokenStream, news.Content);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
result.Add(news);
i++;
}
}
search.Close();
return result;
}
/// <summary>
/// 索引查询
/// </summary>
/// <param name="indexDir">索引文件路径</param>
/// <param name="top">数量</param>
/// <param name="site_id">网站ID</param>
/// <param name="channel_id">频道ID</param>
/// <param name="category_id">类别ID</param>
/// <param name="keywords">关键词</param>
/// <param name="is_high">是否高量显示</param>
/// <returns></returns>
public static DataTable Search(string indexDir, int top, int site_id, int channel_id, int category_id, String keywords)
{
IndexSearcher search = new IndexSearcher(indexDir);
if (keywords.Length > 1)
{
keywords = GetKeyWordsSplitBySpace(keywords, new PanGuTokenizer());
}
//查询条件
BooleanQuery bq = new BooleanQuery();
if (site_id > 0)
{
Term t = new Term("sid", site_id.ToString());
Query query = new TermQuery(t);
bq.Add(query, BooleanClause.Occur.MUST);
}
if (channel_id > 0)
{
Term t = new Term("hid", channel_id.ToString());
Query query = new TermQuery(t);
bq.Add(query, BooleanClause.Occur.MUST);
}
if (category_id > 0)
{
Term t = new Term("cid", category_id.ToString());
Query query = new TermQuery(t);
bq.Add(query, BooleanClause.Occur.MUST);
}
if (null != keywords && keywords.Length > 0)
{
string[] fields = { "title", "tags", "zhaiyao" };
MultiFieldQueryParser parser = new MultiFieldQueryParser(fields, new PanGuAnalyzer(true));
Query query = parser.Parse(keywords);
bq.Add(query, BooleanClause.Occur.MUST);
}
//搜索
//Sort sort = new Sort(new SortField(null, SortField.DOC, true)); //排序
Sort sort = Sort.RELEVANCE;
Hits hits = search.Search(bq, sort);
DataTable dt = new DataTable();
dt.Columns.Add("id", Type.GetType("System.Int32"));
dt.Columns.Add("site_id", Type.GetType("System.Int32"));
dt.Columns.Add("channel_id", Type.GetType("System.Int32"));
dt.Columns.Add("category_id", Type.GetType("System.Int32"));
dt.Columns.Add("title", Type.GetType("System.String"));
dt.Columns.Add("call_index", Type.GetType("System.String"));
dt.Columns.Add("img_url", Type.GetType("System.String"));
dt.Columns.Add("tags", Type.GetType("System.String"));
dt.Columns.Add("zhaiyao", Type.GetType("System.String"));
dt.Columns.Add("add_time", Type.GetType("System.DateTime"));
dt.Columns.Add("update_time", Type.GetType("System.DateTime"));
dt.Columns.Add("titlehighlight", Type.GetType("System.String"));
dt.Columns.Add("zhaiyaohighlight", Type.GetType("System.String"));
int i = 0;
int recordCount = hits.Length();
string title, zhaiyao;
while (i < top && i < recordCount && dt.Rows.Count < top)
{
title = hits.Doc(i).Get("title");
zhaiyao = hits.Doc(i).Get("zhaiyao");
DataRow row = dt.NewRow();
row["id"] = Utils.StrToInt(hits.Doc(i).Get("id"), 0);
row["site_id"] = Utils.StrToInt(hits.Doc(i).Get("sid"), 0);
row["channel_id"] = Utils.StrToInt(hits.Doc(i).Get("hid"), 0);
row["category_id"] = Utils.StrToInt(hits.Doc(i).Get("cid"), 0);
row["title"] = title;
row["call_index"] = hits.Doc(i).Get("cidx");
row["tags"] = hits.Doc(i).Get("tags");
row["zhaiyao"] = zhaiyao;
row["img_url"] = hits.Doc(i).Get("img");
row["add_time"] = Utils.StrToDateTime(hits.Doc(i).Get("atime"));
row["update_time"] = Utils.StrToDateTime(hits.Doc(i).Get("utime"));
//高亮
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
title = highlighter.GetBestFragment(keywords, title);
if (string.IsNullOrEmpty(title))
{
row["titlehighlight"] = row["title"];
}
else
{
row["titlehighlight"] = title;
}
zhaiyao = highlighter.GetBestFragment(keywords, zhaiyao);
if (string.IsNullOrEmpty(zhaiyao))
{
row["zhaiyaohighlight"] = row["zhaiyao"];
}
else
{
row["zhaiyaohighlight"] = zhaiyao;
}
//填充
dt.Rows.Add(row);
//自增
i++;
}
search.Close();
return(dt);
}
/// <summary>
///
/// </summary>
/// <param name="hits"></param>
/// <param name="i"></param>
/// <param name="pageSize"></param>
/// <param name="keywords"></param>
/// <returns></returns>
private static DataTable HitsToDataTable(Hits hits, int i, int pageSize, string keywords)
{
DataTable dt = new DataTable();
dt.Columns.Add("id", Type.GetType("System.Int32"));
dt.Columns.Add("site_id", Type.GetType("System.Int32"));
dt.Columns.Add("channel_id", Type.GetType("System.Int32"));
dt.Columns.Add("category_id", Type.GetType("System.Int32"));
dt.Columns.Add("title", Type.GetType("System.String"));
//dt.Columns.Add("sub_title", Type.GetType("System.String"));
dt.Columns.Add("call_index", Type.GetType("System.String"));
dt.Columns.Add("img_url", Type.GetType("System.String"));
dt.Columns.Add("tags", Type.GetType("System.String"));
dt.Columns.Add("zhaiyao", Type.GetType("System.String"));
//dt.Columns.Add("is_top", Type.GetType("System.Int32"));
//dt.Columns.Add("is_red", Type.GetType("System.Int32"));
//dt.Columns.Add("is_hot", Type.GetType("System.Int32"));
//dt.Columns.Add("market_price", Type.GetType("System.Decimal"));
//dt.Columns.Add("sell_price", Type.GetType("System.Decimal"));
dt.Columns.Add("add_time", Type.GetType("System.DateTime"));
dt.Columns.Add("update_time", Type.GetType("System.DateTime"));
dt.Columns.Add("titlehighlight", Type.GetType("System.String"));
dt.Columns.Add("zhaiyaohighlight", Type.GetType("System.String"));
int total = hits.Length();
string title, zhaiyao;
while (i < total && dt.Rows.Count < pageSize)
{
title = hits.Doc(i).Get("title");
zhaiyao = hits.Doc(i).Get("zhaiyao");
DataRow row = dt.NewRow();
row["id"] = Utils.StrToInt(hits.Doc(i).Get("id"), 0);
row["site_id"] = Utils.StrToInt(hits.Doc(i).Get("sid"), 0);
row["channel_id"] = Utils.StrToInt(hits.Doc(i).Get("hid"), 0);
row["category_id"] = Utils.StrToInt(hits.Doc(i).Get("cid"), 0);
row["title"] = title;
//row["sub_title"] = hits.Doc(i).Get("sub");
row["call_index"] = hits.Doc(i).Get("cidx");
row["tags"] = hits.Doc(i).Get("tags");
row["zhaiyao"] = zhaiyao;
//row["is_top"] = Utils.StrToInt(hits.Doc(i).Get("top"), 0);
//row["is_red"] = Utils.StrToInt(hits.Doc(i).Get("red"), 0);
//row["is_hot"] = Utils.StrToInt(hits.Doc(i).Get("hot"), 0);
row["img_url"] = hits.Doc(i).Get("img");
//row["market_price"] = Utils.StrToDecimal(hits.Doc(i).Get("market"), 0);
//row["sell_price"] = Utils.StrToDecimal(hits.Doc(i).Get("sell"), 0);
row["add_time"] = Utils.StrToDateTime(hits.Doc(i).Get("atime"));
row["update_time"] = Utils.StrToDateTime(hits.Doc(i).Get("utime"));
//高亮
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 100;
title = highlighter.GetBestFragment(keywords, title);
if (string.IsNullOrEmpty(title))
{
row["titlehighlight"] = row["title"];
}
else
{
row["titlehighlight"] = title;
}
zhaiyao = highlighter.GetBestFragment(keywords, zhaiyao);
if (string.IsNullOrEmpty(zhaiyao))
{
row["zhaiyaohighlight"] = Utils.CutString(row["zhaiyao"].ToString(), 100);
}
else
{
row["zhaiyaohighlight"] = zhaiyao;
}
//填充
dt.Rows.Add(row);
//自增
i++;
}
return(dt);
}
/// <summary>
/// 在不同的类型下再根据检索字段中查询数据(分页)
/// </summary>
/// <param name="dType">分类,传空值查询全部，用于精确查找，例如类型等，key为字段名，value为值</param>
/// <param name="iTypeClause">分类之间的运算关系,三个值：0：must，且；1：must not，非；2：should，或；默认为0</param>
/// <param name="keyword">用于模糊查找的关键词</param>
/// <param name="objType">需要的对象</param>
/// <param name="PageIndex">页数</param>
/// <param name="PageSize">页大小</param>
/// <param name="TotalCount">返回的数据总数</param>
/// <returns></returns>
public List <T> Search <T>(Dictionary <string, string> dType, string keyword, string[] fields, T objType, int PageIndex, int PageSize, out int TotalCount, int iTypeClause)
{
if (PageIndex < 1)
{
PageIndex = 1;
}
//Stopwatch st = new Stopwatch();
//st.Start();
BooleanQuery bq = new BooleanQuery();
//对类型进行与运算
if (dType != null && dType.Count > 0)
{
foreach (KeyValuePair <string, string> kvp in dType)
{
//使用术语查询
Query tq = new TermQuery(new Term(kvp.Key, kvp.Value));
BooleanClause.Occur occur = BooleanClause.Occur.MUST;
switch (iTypeClause)
{
case 0: occur = BooleanClause.Occur.MUST;
break;
case 1: occur = BooleanClause.Occur.MUST_NOT;
break;
case 2: occur = BooleanClause.Occur.SHOULD;
break;
default: occur = BooleanClause.Occur.MUST;
break;
}
bq.Add(tq, occur);//与运算
}
}
//对关键字进行或运算
if (keyword != "")
{
QueryParser parser = null; // new QueryParser(version, field, analyzer);//一个字段查询
parser = new MultiFieldQueryParser(version, fields, analyzer); //多个字段查询
Query queryKeyword = parser.Parse(keyword);
bq.Add(queryKeyword, BooleanClause.Occur.SHOULD); //或运算
}
List <T> list = new List <T>();
TopScoreDocCollector collector = TopScoreDocCollector.create(PageIndex * PageSize, true);
IndexSearcher searcher = new IndexSearcher(directory_luce, true);//true-表示只读
searcher.Search(bq, collector);
if (collector == null || collector.GetTotalHits() == 0)
{
TotalCount = 0;
return(list);
}
else
{
int start = PageSize * (PageIndex - 1);
//结束数
int limit = PageSize;
ScoreDoc[] hits = collector.TopDocs(start, limit).scoreDocs;
TotalCount = collector.GetTotalHits();
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font style='color:red'>", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
//遍历搜索到的结果
foreach (ScoreDoc sd in hits)
{
try
{
//获取对象
Document doc = searcher.Doc(sd.doc);
Type t = objType.GetType();
T obj = (T)Activator.CreateInstance(t, true);
PropertyInfo[] propertyList = t.GetProperties();
//设置对象，并填充搜索到的数据至对象
foreach (PropertyInfo property in propertyList)
{
string strPName = property.Name;
string strValue = doc.Get(strPName);
if (fields != null && fields.Contains(strPName))
{
string strHighterValue = highlighter.GetBestFragment(keyword, strValue);
strValue = strHighterValue == "" ? strValue : strHighterValue;
}
property.SetValue(obj, strValue, null);
}
list.Add(obj);
}
catch (Exception ex)
{
throw ex;
}
}
return(list);
}
//st.Stop();
//Response.Write("查询时间：" + st.ElapsedMilliseconds + " 毫秒<br/>");
}
/// <summary>
/// 在不同的类型下再根据title和content字段中查询数据(分页)
/// </summary>
/// <param name="flag">分类,传空值查询全部</param>
/// <param name="keyWord"></param>
/// <param name="pageIndex"></param>
/// <param name="pageSize"></param>
/// <param name="totalCount"></param>
/// <param name="isLike"></param>
/// <returns></returns>
public List <SearchResult> Search(string flag, string keyWord, int pageIndex, int pageSize, out int totalCount, bool isLike = false)
{
if (pageIndex < 1)
{
pageIndex = 1;
}
BooleanQuery bq = new BooleanQuery();
if (!string.IsNullOrEmpty(flag))
{
QueryParser qpflag = new QueryParser(version, "flag", analyzer);
Query qflag = qpflag.Parse(flag);
bq.Add(qflag, Occur.MUST);//与运算
}
if (!string.IsNullOrEmpty(keyWord))
{
string[] fileds = { "title", "content" }; //查询字段
QueryParser parser = null; // new QueryParser(version, field, analyzer);//一个字段查询
parser = new MultiFieldQueryParser(version, fileds, analyzer); //多个字段查询
Query queryKeyword = parser.Parse(keyWord);
bq.Add(queryKeyword, Occur.MUST); //与运算
if (isLike)
{
Query prefixQuery_title = null;
Query prefixQuery_body = null;
Query fuzzyQuery_Title = null;
Query fuzzyQuery_body = null;
Query wildcardQuery_title = null;
Query wildcardQuery_body = null;
//以什么开头，输入“ja”就可以搜到包含java和javascript两项结果了
prefixQuery_title = new PrefixQuery(new Term("title", keyWord));
prefixQuery_body = new PrefixQuery(new Term("content", keyWord));
//直接模糊匹配,假设你想搜索跟‘wuzza’相似的词语,你可能得到‘fuzzy’和‘wuzzy’。
fuzzyQuery_Title = new FuzzyQuery(new Term("title", keyWord));
fuzzyQuery_body = new FuzzyQuery(new Term("content", keyWord));
//通配符搜索
wildcardQuery_title = new WildcardQuery(new Term("title", keyWord));
wildcardQuery_body = new WildcardQuery(new Term("content", keyWord));
bq.Add(prefixQuery_title, Occur.SHOULD);
bq.Add(prefixQuery_body, Occur.SHOULD);
bq.Add(fuzzyQuery_Title, Occur.SHOULD);
bq.Add(fuzzyQuery_body, Occur.SHOULD);
bq.Add(wildcardQuery_title, Occur.SHOULD);
bq.Add(wildcardQuery_body, Occur.SHOULD);
}
}
TopScoreDocCollector collector = TopScoreDocCollector.Create(pageIndex * pageSize, false);
IndexSearcher searcher = new IndexSearcher(directory_luce, true);//true-表示只读
searcher.Search(bq, collector);
if (collector == null || collector.TotalHits == 0)
{
totalCount = 0;
return(null);
}
else
{
int start = pageSize * (pageIndex - 1);
//结束数
int limit = pageSize;
ScoreDoc[] hits = collector.TopDocs(start, limit).ScoreDocs;
List <SearchResult> list = new List <SearchResult>();
int counter = 1;
totalCount = collector.TotalHits;
foreach (ScoreDoc sd in hits)//遍历搜索到的结果
{
try
{
Document doc = searcher.Doc(sd.Doc);
SearchResult searchResult = new SearchResult();
searchResult.Id = Convert.ToInt64(doc.Get("id"));
string title = doc.Get("title");
string content = doc.Get("content");
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
content = highlighter.GetBestFragment(keyWord, content);
string titlehighlight = highlighter.GetBestFragment(keyWord, title);
if (titlehighlight != "")
{
title = titlehighlight;
}
searchResult.Title = title;
searchResult.Content = content;
list.Add(searchResult);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
counter++;
}
return(list);
}
}
public static List <IndexItem> Search(String indexDir, String q, int pageLen, int pageNo, out int recCount)
{
string keywords = q;
IndexSearcher search = new IndexSearcher(indexDir);
q = GetKeyWordsSplitBySpace(q, new PanGuTokenizer());
QueryParser queryParser = new QueryParser("contents", new PanGuAnalyzer(true));
Query query = queryParser.Parse(q);
Hits hits = search.Search(query);
List <IndexItem> result = new List <IndexItem>();
recCount = hits.Length();
int i = (pageNo - 1) * pageLen;
while (i < recCount && result.Count < pageLen)
{
IndexItem news = null;
try
{
news = new IndexItem();
news.Title = hits.Doc(i).Get("title");
news.Content = hits.Doc(i).Get("contents");
news.Url = hits.Doc(i).Get("url");
String strTime = hits.Doc(i).Get("time");
news.Time = DateTime.ParseExact(strTime, "yyyyMMdd", null);
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter =
new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter =
new PanGu.HighLight.Highlighter(simpleHTMLFormatter,
new Segment());
highlighter.FragmentSize = 50;
news.Abstract = highlighter.GetBestFragment(keywords, news.Content);
//// 高亮显示设置
////TermQuery tQuery = new TermQuery(new Term("contents", q));
//SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("<font color=\"red\">", "</font>");
//Highlighter highlighter = new Highlighter(simpleHTMLFormatter, new QueryScorer(query));
////关键内容显示大小设置
//highlighter.SetTextFragmenter(new SimpleFragmenter(50));
////取出高亮显示内容
//Lucene.Net.Analysis.KTDictSeg.KTDictSegAnalyzer analyzer = new Lucene.Net.Analysis.KTDictSeg.KTDictSegAnalyzer();
//TokenStream tokenStream = analyzer.TokenStream("contents", new StringReader(news.Content));
//news.Abstract = highlighter.GetBestFragment(tokenStream, news.Content);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
result.Add(news);
i++;
}
}
search.Close();
return(result);
}
/// <summary>
/// 产品搜索
/// 从索引
/// </summary>
/// <param name="key">搜索关键字</param>
/// <param name="categorySysNo">分类编号</param>
/// <param name="attributes">属性列表</param>
/// <param name="pageIndex">页码</param>
/// <param name="pageSize">页大小</param>
/// <param name="pageCount">分页总数</param>
/// <param name="recCount">总记录数</param>
/// <param name="highLight">是否高亮关键字</param>
/// <param name="sort">排序(0:相关度 1:销量 2:价格 3:评分 4:上架时间)</param>
/// <param name="isDescending">true 为降序 false为升序</param>
/// <param name="productSysNo">商品编号</param>
/// <param name="priceSource">产品价格来源</param>
/// <param name="priceSourceSysNo">产品价格来源编号(会员等级编号)</param>
/// <param name="showNotFrontEndOrder">搜索前台不能下单的商品(2014-2-14 黄波 添加 物流APP需要)</param>
/// <returns>商品列表</returns>
/// <remarks>2013-08-08 黄波 创建</remarks>
/// <remarks>2013-11-12 邵斌 修改 添加搜索商品系统编号：该方法暂时闲置</remarks>
/// <remarks>2013-12-23 邵斌 添加前台是否下单字段</remarks>
/// <remarks>2014-02-14 黄波 添加是否搜索前台不能下单的商品(物流APP需要)</remarks>
public IList <PdProductIndex> Search(string key
, int?categorySysNo
, List <int> attributes
, int pageSize
, ref int pageIndex
, ref int pageCount
, ref int recCount
, bool highLight = false
, int sort = 1
, bool isDescending = false
, int productSysNo = 0
, ProductStatus.产品价格来源 priceSource = ProductStatus.产品价格来源.会员等级价
, int priceSourceSysNo = CustomerLevel.初级
, bool showNotFrontEndOrder = false)
{
var returnValue = new List <PdProductIndex>();
var indexSearch = Hyt.Infrastructure.Lucene.ProductIndex.Searcher;
try
{
pageIndex = pageIndex == 0 ? 1 : pageIndex;
key = key ?? ""; //查询设置初始值
#region 搜索条件
BooleanQuery query = new BooleanQuery();
BooleanQuery childQuery;
BooleanQuery esenQuery;
#region 关键字搜索
string keywords = key.Trim();
if (!string.IsNullOrWhiteSpace(keywords))
{
childQuery = new BooleanQuery();
esenQuery = new BooleanQuery();
if (!IsErpCode(keywords))
{
////全词去空格
//esenQuery.Add(new TermQuery(new Term("ProductName", Regex.Replace(keywords, @"\s", ""))),
// BooleanClause.Occur.SHOULD);
//esenQuery.SetBoost(3.0F);
//esenQuery.Add(new TermQuery(new Term("ProductSubName", Regex.Replace(keywords, @"\s", ""))),
// BooleanClause.Occur.SHOULD);
//esenQuery.SetBoost(3.0F);
//childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
esenQuery = new BooleanQuery();
//分词 盘古分词
var keyWordsSplitBySpace = GetKeyWordsSplitBySpace(keywords);
if (string.IsNullOrWhiteSpace(keyWordsSplitBySpace))
{
return(null);
}
keyWordsSplitBySpace = string.Format("{0}^{1}.0", keywords, (int)Math.Pow(3, 5));
QueryParser productNameQueryParser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "ProductName", new PanGuAnalyzer(true));
Query productNameQuery = productNameQueryParser.Parse(keyWordsSplitBySpace);
childQuery.Add(productNameQuery, BooleanClause.Occur.SHOULD);
//以什么开头，输入“ja”就可以搜到包含java和javascript两项结果了
Query prefixQuery_productName = new PrefixQuery(new Term("ProductName", key));
//直接模糊匹配,假设你想搜索跟‘wuzza’相似的词语,你可能得到‘fuzzy’和‘wuzzy’。
Query fuzzyQuery_productName = new FuzzyQuery(new Term("ProductName", key));
//通配符搜索
Query wildcardQuery_productName = new WildcardQuery(new Term("ProductName", string.Format("*{0}*", key.Trim())));
childQuery.Add(prefixQuery_productName, BooleanClause.Occur.SHOULD);
childQuery.Add(fuzzyQuery_productName, BooleanClause.Occur.SHOULD);
childQuery.Add(wildcardQuery_productName, BooleanClause.Occur.SHOULD);
//esenQuery.Add(new QueryParser("ProductName", new PanGuAnalyzer(true)).Parse(keyWordsSplitBySpace), BooleanClause.Occur.SHOULD);
//esenQuery.Add(new QueryParser("ProductSubName", new PanGuAnalyzer(true)).Parse(keyWordsSplitBySpace), BooleanClause.Occur.SHOULD);
////分词 按空格
//var keyColl = keywords.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
//foreach (var item in keyColl)
//{
// esenQuery.Add(new TermQuery(new Term("ProductName", item)),
// BooleanClause.Occur.SHOULD);
// esenQuery.Add(new TermQuery(new Term("ProductSubName", item)),
// BooleanClause.Occur.SHOULD);
//}
//esenQuery.SetBoost(2.9F);
//childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
}
else
{
esenQuery.Add(new TermQuery(new Term("ErpCode", Regex.Replace(keywords, @"\s", ""))),
BooleanClause.Occur.SHOULD);
esenQuery.SetBoost(3.0F);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
}
query.Add(childQuery, BooleanClause.Occur.MUST);
}
#endregion
#region 分类搜索
if (categorySysNo.HasValue && categorySysNo.Value != 0)
{
childQuery = new BooleanQuery();
esenQuery = new BooleanQuery();
esenQuery.Add(new TermQuery(new Term("Category", categorySysNo.Value.ToString())),
BooleanClause.Occur.SHOULD);
esenQuery.SetBoost(3.0F);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
esenQuery = new BooleanQuery();
esenQuery.Add(new WildcardQuery(new Term("AssociationCategory", string.Format("*,{0},*", categorySysNo.Value.ToString()))),
BooleanClause.Occur.SHOULD);
esenQuery.SetBoost(2.8F);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
//所有子分类
var childCategoryList = Hyt.BLL.Web.PdCategoryBo.Instance.GetChildAllCategory(categorySysNo.Value);
foreach (var item in childCategoryList)
{
esenQuery = new BooleanQuery();
esenQuery.Add(new TermQuery(new Term("Category", item.SysNo.ToString())),
BooleanClause.Occur.SHOULD);
esenQuery.SetBoost(3.0F);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
esenQuery = new BooleanQuery();
esenQuery.Add(new WildcardQuery(new Term("AssociationCategory", string.Format("*,{0},*", item.SysNo.ToString()))),
BooleanClause.Occur.SHOULD);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
}
query.Add(childQuery, BooleanClause.Occur.MUST);
}
#endregion
#region 属性搜索
if (attributes != null)
{
childQuery = new BooleanQuery();
esenQuery = new BooleanQuery();
foreach (var item in attributes)
{
esenQuery.Add(new WildcardQuery(new Term("Attributes", string.Format("*,*:{0},*", item.ToString()))),
BooleanClause.Occur.MUST);
}
childQuery.Add(esenQuery, BooleanClause.Occur.MUST);
query.Add(childQuery, BooleanClause.Occur.MUST);
}
#endregion
#region 品牌搜索
//if (brandSysNo.Value != 0)
//{
// childQuery = new BooleanQuery();
// childQuery.Add(new TermQuery(new Term("BrandSysNo", brandSysNo.Value.ToString())),
// BooleanClause.Occur.SHOULD);
// childQuery.SetBoost(3.0F);
// query.Add(childQuery, BooleanClause.Occur.MUST);
//}
#endregion
#region 仅搜索有效的商品
childQuery = new BooleanQuery();
childQuery.Add(new TermQuery(new Term("Status", ((int)Hyt.Model.WorkflowStatus.ProductStatus.产品上线状态.效).ToString())),
BooleanClause.Occur.SHOULD);
query.Add(childQuery, BooleanClause.Occur.MUST);
//2013-12-23 邵斌 添加前台是否下单字段
if (!showNotFrontEndOrder)
{
childQuery = new BooleanQuery();
childQuery.Add(new TermQuery(new Term("CanFrontEndOrder", ((int)Hyt.Model.WorkflowStatus.ProductStatus.商品是否前台下单.是).ToString())),
BooleanClause.Occur.SHOULD);
query.Add(childQuery, BooleanClause.Occur.MUST);
}
#endregion
#region 排序
//isDescending true为降序 false为升序
SortField sf = null;
switch (Math.Abs(sort))
{
case 1: //销量
sf = new SortField("SalesCount", SortField.INT, isDescending);
break;
case 2: //价格
sf = new SortField("BasicPrice", SortField.FLOAT, isDescending);
break;
case 3: //评分
sf = new SortField("CommentCount", SortField.INT, isDescending);
break;
case 4: //上架时间
sf = new SortField("CreatedDate", SortField.STRING, isDescending);
break;
default:
sf = new SortField(null, SortField.SCORE, false);
break;
}
Sort luceneSort; //排序对象
//默认匹配度，表明是对固定信息进行搜索，所以就要进行先安匹配度来排序。这样用户搜索的商品将排在前面，方便用户筛选
if (Math.Abs(sort) != (int)CommonEnum.LuceneProductSortType.默认匹配度)
{
//无搜索关键字的时候就按模式设置的进行排序
luceneSort = new Sort();
luceneSort.SetSort(sf);
}
else
{
//收搜索关键字时，就要先安匹配度进行排序，然后才是设置排序。
luceneSort = new Sort(new SortField[] { SortField.FIELD_SCORE, sf });
}
#endregion
#region 商品系统编号搜索
if (productSysNo > 0)
{
childQuery = new BooleanQuery();
esenQuery = new BooleanQuery();
esenQuery.Add(new TermQuery(new Term("SysNo", productSysNo.ToString())),
BooleanClause.Occur.SHOULD);
esenQuery.SetBoost(3.0F);
childQuery.Add(esenQuery, BooleanClause.Occur.SHOULD);
query.Add(childQuery, BooleanClause.Occur.MUST);
}
#endregion
#endregion
Hits hits = indexSearch.Search(query, luceneSort);
recCount = hits.Length();
pageCount = (int)Math.Ceiling((double)recCount / (double)pageSize);
if (pageIndex <= 0)
{
pageIndex = 1;
}
if (pageIndex > pageCount)
{
pageIndex = pageCount;
}
var recordIndex = Math.Max((pageIndex - 1) * pageSize, 0);
PdProductIndex pdProductIndex;
var simpleHtmlFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
var T_ProductName = "";
while (recordIndex < recCount && returnValue.Count < pageSize)
{
try
{
pdProductIndex = Hyt.Infrastructure.Lucene.ProductIndex.Instance.DocumentToModel(hits.Doc(recordIndex));
string productName = pdProductIndex.ProductName;
if (highLight && !string.IsNullOrEmpty(key))
{
var highlighter = new PanGu.HighLight.Highlighter(simpleHtmlFormatter, new PanGu.Segment())
{
FragmentSize = 50
};
T_ProductName = highlighter.GetBestFragment(key.Trim(), pdProductIndex.ProductName);
if (!string.IsNullOrWhiteSpace(T_ProductName))
{
pdProductIndex.ProductName = T_ProductName;
}
}
pdProductIndex.RankPrice = GetProductRankPrice(pdProductIndex.Prices, pdProductIndex.BasicPrice, priceSource, priceSourceSysNo);
returnValue.Add(pdProductIndex);
}
catch (Exception ex)
{
BLL.Log.SysLog.Instance.Error(LogStatus.系统日志来源.后台, ex.Message, ex);
}
finally
{
recordIndex++;
}
}
}
catch (Exception ex)
{
BLL.Log.SysLog.Instance.Error(LogStatus.系统日志来源.后台, ex.Message, ex);
}
finally
{
// indexSearch.Close();
}
return(returnValue);
}
public static SearchResultDataSet <Article> Search(ArticleQuery query)
{
//触发事件
GlobalEvents.UserSearch(query.Title);
//索引文件不存在时，返回null
if (!GlobalSettings.CheckFileExist(PhysicalIndexDirectory))
{
return(new SearchResultDataSet <Article>());
}
DateTime startTime = DateTime.Now;
BooleanQuery currentQuery = new BooleanQuery();
//CategoryID
if (query.CategoryID.HasValue && query.CategoryID.Value != 0)
{
Term categoryIDTearm = new Term(NewsIndexField.CategoryID, query.CategoryID.ToString());
Query categoryIDQuery = new TermQuery(categoryIDTearm);
currentQuery.Add(categoryIDQuery, BooleanClause.Occur.MUST);
}
//KeyWord
if (!string.IsNullOrEmpty(query.Title))
{
query.Title = SearchHelper.LuceneKeywordsScrubber(query.Title);
if (!string.IsNullOrEmpty(query.Title))
{
string[] searchFieldsForKeyword = new string[4];
searchFieldsForKeyword[0] = NewsIndexField.Title;
searchFieldsForKeyword[1] = NewsIndexField.SubTitle;
searchFieldsForKeyword[2] = NewsIndexField.Abstract;
searchFieldsForKeyword[3] = NewsIndexField.Keywords;
MultiFieldQueryParser articleWordQueryParser = new MultiFieldQueryParser(searchFieldsForKeyword, SearchHelper.GetChineseAnalyzer());
articleWordQueryParser.SetLowercaseExpandedTerms(true);
articleWordQueryParser.SetDefaultOperator(QueryParser.OR_OPERATOR);
string keyWordsSplit = SearchHelper.SplitKeywordsBySpace(query.Title);
Query articleWordQuery = articleWordQueryParser.Parse(keyWordsSplit);
currentQuery.Add(articleWordQuery, BooleanClause.Occur.MUST);
}
}
//Search
IndexSearcher searcher = new IndexSearcher(PhysicalIndexDirectory);
Hits hits = searcher.Search(currentQuery);
SearchResultDataSet <Article> articles = new SearchResultDataSet <Article>();
int pageLowerBound = query.PageIndex * query.PageSize;
int pageUpperBound = pageLowerBound + query.PageSize;
if (pageUpperBound > hits.Length())
{
pageUpperBound = hits.Length();
}
//HighLight
PanGu.HighLight.Highlighter highlighter = null;
if (!string.IsNullOrEmpty(query.Title))
{
highlighter = new PanGu.HighLight.Highlighter(new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"#c60a00\">", "</font>"), new PanGu.Segment());
highlighter.FragmentSize = 100;
}
for (int i = pageLowerBound; i < pageUpperBound; i++)
{
Article item = ConvertDocumentToArticle(hits.Doc(i));
if (!string.IsNullOrEmpty(query.Title))
{
string bestBody = null;
if (!string.IsNullOrEmpty(item.Abstract) && item.Abstract.Length > MaxNumFragmentsRequired)
{
bestBody = highlighter.GetBestFragment(query.Title, item.Abstract);
}
if (!string.IsNullOrEmpty(bestBody))
{
item.Abstract = bestBody;
}
else
{
item.Abstract = HtmlHelper.TrimHtml(item.Abstract, 100);
}
string bestSubject = null;
if (!string.IsNullOrEmpty(item.Title) && item.Title.Length > MaxNumFragmentsRequired)
{
bestSubject = highlighter.GetBestFragment(query.Title, item.Title);
}
if (!string.IsNullOrEmpty(bestSubject))
{
item.Title = bestSubject;
}
}
articles.Records.Add(item);
}
searcher.Close();
articles.TotalRecords = hits.Length();
DateTime endTime = DateTime.Now;
articles.SearchDuration = (endTime.Ticks - startTime.Ticks) / 1E7f;
articles.PageIndex = query.PageIndex;
articles.PageSize = query.PageSize;
return(articles);
}
/// <summary>
/// 在不同的类型下再根据title和content字段中查询数据(分页)
/// </summary>
/// <param name="_flag">分类,传空值查询全部</param>
/// <param name="keyword"></param>
/// <param name="PageIndex"></param>
/// <param name="PageSize"></param>
/// <param name="TotalCount"></param>
/// <returns></returns>
public List <MySearchUnit> Search(string _flag, string keyword, int PageIndex, int PageSize, out int TotalCount)
{
if (PageIndex < 1)
{
PageIndex = 1;
}
//Stopwatch st = new Stopwatch();
//st.Start();
BooleanQuery bq = new BooleanQuery();
if (_flag != "")
{
QueryParser qpflag = new QueryParser(version, "flag", analyzer);
Query qflag = qpflag.Parse(_flag);
bq.Add(qflag, Occur.MUST);//与运算
}
if (keyword != "")
{
string[] fileds = { "title", "content" }; //查询字段
QueryParser parser = null; // new QueryParser(version, field, analyzer);//一个字段查询
parser = new MultiFieldQueryParser(version, fileds, analyzer); //多个字段查询
Query queryKeyword = parser.Parse(keyword);
bq.Add(queryKeyword, Occur.MUST); //与运算
}
TopScoreDocCollector collector = TopScoreDocCollector.Create(PageIndex * PageSize, false);
IndexSearcher searcher = new IndexSearcher(directory_luce, true);//true-表示只读
searcher.Search(bq, collector);
if (collector == null || collector.TotalHits == 0)
{
TotalCount = 0;
return(null);
}
else
{
int start = PageSize * (PageIndex - 1);
//结束数
int limit = PageSize;
ScoreDoc[] hits = collector.TopDocs(start, limit).ScoreDocs;
List <MySearchUnit> list = new List <MySearchUnit>();
int counter = 1;
TotalCount = collector.TotalHits;
foreach (ScoreDoc sd in hits)//遍历搜索到的结果
{
try
{
Document doc = searcher.Doc(sd.Doc);
string id = doc.Get("id");
string title = doc.Get("title");
string content = doc.Get("content");
string flag = doc.Get("flag");
string imageurl = doc.Get("imageurl");
string updatetime = doc.Get("updatetime");
PanGu.HighLight.SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
PanGu.HighLight.Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new PanGu.Segment());
highlighter.FragmentSize = 50;
content = highlighter.GetBestFragment(keyword, content);
string titlehighlight = highlighter.GetBestFragment(keyword, title);
if (titlehighlight != "")
{
title = titlehighlight;
}
list.Add(new MySearchUnit(id, title, content, flag, imageurl, updatetime));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
counter++;
}
return(list);
}
//st.Stop();
//Response.Write("查询时间：" + st.ElapsedMilliseconds + " 毫秒<br/>");
}
