lucene搜寻结果分页显示 google、baidu式的分页

2012-12-19

lucene搜索结果分页显示 google、baidu式的分页1、jsp页面!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Tr

lucene搜索结果分页显示 google、baidu式的分页
1、jsp页面

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<style>

</style>
<body style="margin:0px; padding:0px;">
<div style="width:1000px; margin:0 auto;">

</div>
<div>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>
<script type="text/javascript" src="<c:url value='/js/jquery/jquery.js'/>"></script>
<script type="text/javascript" src="<c:url value='/js/jquery/plugin/jquery.form.js'/>"></script>
<script type="text/javascript" src="<c:url value='/js/jquery/plugin/jquery.validate.js'/>"></script>
<jsp:include page="/jsp/include/errorAndMsg.jsp"></jsp:include>
<html:form action="/html/searchindex.bc?method=searchCmsWebSiteIndex" styleId="cmsArticleForm" method="post" onsubmit="check()">
<table border="0" cellpadding="6" cellspacing="0" align="center" styleId="title" property="searchkey" style="width:300px;" maxlength="50"/></td>
<td align="right">类别：</td>
<td>
   <html:select property="field">
   <html:option value="title">标题</html:option>
   <html:option value="subTitle">副标题 </html:option>
   <html:option value="key">关键字 </html:option>
   <html:option value="time">发布日期</html:option>
   <html:option value="author">作者</html:option>
   <html:option value="from">来源</html:option>
   <html:option value="content">内容</html:option>
   </html:select>
</td>
<td align="right">站点：</td>
<td>
   <html:select property="indexsiteid">
   <html:optionsCollection property="catalogTree" label="name" value="id"/>
   </html:select>
</td>
<td><html:submit value="提交" /></td>
</tr>
</table>
</html:form>

<logic:present name="listdata">
<div style="width:950px; margin-left: auto;margin-right: auto;">
<div style="border-top: 1px solid #6B90DA; background: #EBEFF9; height:28px; font-size:12px; font-weight: bold;text-indent: 5px;line-height: 28px; ">查询结果</div>
<logic:empty   name="listdata">
           没有满足条件的结果
           </logic:empty>

    <logic:iterate id="element" indexId="ind" name="listdata" >
      <div width:950px; margin: 0 auto; text-align:center; font-size:12px; margin-top: 20px;padding-top:5px;border-bottom: 1px solid #6B90DA; background: #EBEFF9; height:28px; line-height:28px; margin-bottom: 10px;" + siteName + "\";
SearchFiles searchfile = new SearchFiles();
List<HashMap<String, String>> listdata = searchfile.searchIndex(
   indexPath, field, searchkey, nstart);
total = searchfile.getHitsTotal();
request.setAttribute("start", nstart);
request.setAttribute("total", total);
request.setAttribute("websiteurl", websiteurl);
request.setAttribute("listdata", listdata);
List<TCmsCatalog> topCatalogList = catalogService.findTopCatalog();
CmsArticleForm articleForm = (CmsArticleForm) form;
articleForm.setCatalogTree(topCatalogList);
return mapping.findForward(ConstantDefine.FORWARD_QUERY);
}

3、主要的搜索类

package com.berheley.components.lucene;

/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.cn.ChineseAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.FilterIndexReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Searcher;

/** Simple command-line based search demo. */
public class SearchFiles
{

private int hitsTotal;

/**
* Use the norms from one field for all fields. Norms are read into memory, using a byte of
* memory per document per searched field. This can cause search of large collections with a
* large number of fields to run out of memory. If all of the fields contain only a single token,
* then the norms are all identical, then single norm vector may be shared.
*/
private static class OneNormsReader extends FilterIndexReader
{

private final String field;

public OneNormsReader(IndexReader in, String field)
{
   super(in);
   this.field = field;
}

@Override
public byte[] norms(String field) throws IOException
{
   return in.norms(this.field);
}
}

public SearchFiles()
{
}

public List<HashMap<String, String>> searchIndex(String indexPath, String field, String searchkey, int nstart)
{
List<HashMap<String, String>> docList = new ArrayList<HashMap<String, String>>();
String indexpath = indexPath;
// indexpath = "D:\\webapps\\cms\\indexes\\tjtggov";
String normsField = null;
IndexReader reader;
try
{
   reader = IndexReader.open(indexpath);
   if (normsField != null)
    reader = new OneNormsReader(reader, normsField);
   Searcher searcher = new IndexSearcher(reader);
   Analyzer analyzer = new ChineseAnalyzer();
   QueryParser parser = new QueryParser(field, analyzer);
   if (searchkey != null)
    searchkey = searchkey.trim();
   try
   {
    Query query;
    query = parser.parse(searchkey);
    System.out.println("Searching for: " + query.toString(searchkey));
    Date start = new Date();
    Hits hits = searcher.search(query);
    Date end = new Date();
    System.out.println("Time: "
       + (end.getTime() - start.getTime())
       + "ms");
    System.out.println(hits.length() + " total matching documents");
    setHitsTotal(hits.length());
    // 如果最后一页数量小于每页显示的数量则全部显示
    // int length = hits.length();
    final int HITS_PER_PAGE = 10;
    // for (int start_ = 0; start_ < hits.length(); start_ += HITS_PER_PAGE)
    // {
    int end_ = Math.min(hits.length(), nstart + HITS_PER_PAGE);
    for (int i = nstart; i < end_; i++)
    {
     Document doc = hits.doc(i);
     String path = doc.get("path");
     final HashMap<String, String> dataMap = new HashMap<String, String>();
     dataMap.put("path", doc.get("path"));
     dataMap.put("title", doc.get("title"));
     dataMap.put("link", doc.get("link"));
     if (doc.get("content").length() > 200)
      dataMap.put("content", doc.get("content").substring(0, 200));
     else
      dataMap.put("content", doc.get("content"));
     dataMap.put("time", doc.get("time"));
     dataMap.put("subTitle", doc.get("subTitle"));
     dataMap.put("key", doc.get("key"));
     dataMap.put("author", doc.get("author"));
     dataMap.put("from", doc.get("from"));
     docList.add(dataMap);
     if (path != null)
     {
      System.out.println((i + 1) + ". " + path);
      String title = doc.get("title");
      if (title != null)
      {
       System.out.println("   Title: " + doc.get("title"));
      }
     } else
     {
      System.out.println((i + 1)
         + ". "
         + "No path for this document");
     }
    }
    // }
    reader.close();
   } catch (ParseException e)
   {
    e.printStackTrace();
   }
} catch (CorruptIndexException e)
{
   e.printStackTrace();
} catch (IOException e)
{
   e.printStackTrace();
}
return docList;
}

public int getHitsTotal()
{
return hitsTotal;
}

public void setHitsTotal(int hitsTotal)
{
this.hitsTotal = hitsTotal;
}
}

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lucene搜寻结果分页显示 google、baidu式的分页