新建一个search.jsp 页面
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>搜索结果</title>
<mce:style type="text/css"><!--
body
{
margin-top:50px;
margin-left:50px;
}
.search
{
text-align:center;
border: 1px solid #3366CC;
width:{bfb};
height:40px;
margin-bottom:20px;
}
.input_text
{
width:500px;
height:20px;
margin:9px 0 0 0;
}
.title
{
font-size:25px;
color:#000;
font-weight:bold;
margin-bottom:20px;
text-decoration:underline;
}
.content
{
font-size:23px;
color:#999999;
margin-bottom:35px;
}
--></mce:style><style type="text/css" mce_bogus="1">
body
{
margin-top:50px;
margin-left:50px;
}
.search
{
text-align:center;
border: 1px solid #3366CC;
width:{bfb};
height:40px;
margin-bottom:20px;
}
.input_text
{
width:500px;
height:20px;
margin:9px 0 0 0;
}
.title
{
font-size:25px;
color:#000;
font-weight:bold;
margin-bottom:20px;
text-decoration:underline;
}
.content
{
font-size:23px;
color:#999999;
margin-bottom:35px;
}</style>
</head>
<body>
<div class="search">
<form action="searchServlet" method="post">
<input type="text" name="keyword" class="input_text"/>
<input type="submit" value=" 搜 索 " />
</form>
</div>
<hr/>
<c:forEach items="${list}" var="n">
<div class="title">
${n.title }
</div>
<div class="content">${n.content }</div>
</c:forEach>
</body>
</html>
再util 包下新建一个LunceneUtil文件
package com.lunceneTest.util;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import net.paoding.analysis.analyzer.PaodingAnalyzer;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Searcher;
import org.apache.lucene.search.highlight.Fragmenter;
import org.apache.lucene.search.highlight.Highlighter;
import org.apache.lucene.search.highlight.QueryScorer;
import org.apache.lucene.search.highlight.SimpleFragmenter;
import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
import org.apache.lucene.store.FSDirectory;
import com.lunceneTest.Model.News;
public class LunceneUtil
{
public static List<News> search(String path,String keyword)
{
List<News> list = new ArrayList<News>();
IndexReader reader=null;
try {
FSDirectory directory = FSDirectory.getDirectory(path);
reader = IndexReader.open(directory);
Searcher searcher = new IndexSearcher(directory);
//要查询的字段
String [] fields = {News.TITLE,News.CONTENT};
//要查询字段之间的关系(与或非)
BooleanClause.Occur [] flags = new BooleanClause.Occur[]{
BooleanClause.Occur.SHOULD,BooleanClause.Occur.SHOULD
};
// 分词时用的分词器
Analyzer analyzer = new PaodingAnalyzer();
Query query =MultiFieldQueryParser.parse(keyword, fields, flags, analyzer);
// 由于我们目前使用的查询是多字段查询，需要匹配度的排序
// QueryScorer内置计分器
query.rewrite(reader);//用于重写query对象，目的能过让计费器识别当前的query；
Hits hits = searcher.search(query);
int length = hits.length();
for(int i=0; i < length; i++)
{
Document doc = hits.doc(i);
News n = new News();
int id =Integer.valueOf(doc.get(News.ID));
String title = doc.get(News.TITLE); //查询关键字高亮
System.out.println("tt = " + title);
String content = doc.get(News.CONTENT);
SimpleHTMLFormatter format = new SimpleHTMLFormatter("<font color=red>","</font>");
//高亮 ，计分器
Highlighter highlighter = new Highlighter(format,new QueryScorer(query));
//关键字附近字符串的截取，截取200个字符
Fragmenter fragmenter = new SimpleFragmenter(150);
highlighter.setTextFragmenter(fragmenter);
//针对某个关键字的高亮以及截取
/*TokenStream title_tokenStream = analyzer.tokenStream(News.TITLE, new StringReader(title));
String h_title = highlighter.getBestFragment(title_tokenStream, title);*/
TokenStream content_tokenStream = analyzer.tokenStream(News.CONTENT, new StringReader(content));
content = highlighter.getBestFragment(content_tokenStream, content);
n.setId(id);
n.setTitle(title);
n.setContent(content);
list.add(n);
}
} catch (Exception e) {
// TODO: handle exception
}
finally
{
try {
reader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return list;
}
}
新建一个用来查询的Servlet : searchServlet
package com.lunceneTest.servlet;
import java.io.IOException;
import java.net.URLDecoder;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.lunceneTest.Model.News;
import com.lunceneTest.util.LunceneUtil;
public class SearchServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = -7697674920907944387L;
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String keyword = request.getParameter("keyword");
String path = URLDecoder.decode(SearchServlet.class.getResource("/data/index").toString(), "UTF-8").replace("file:/", "");
List<News> list=LunceneUtil.search(path, keyword);
request.setAttribute("list",list);
request.getRequestDispatcher("/search.jsp").forward(request, response);
}
}
运行项目，在文本框中输入搜索关键词 ,例如“爱 情 输赢 慢慢”，运行结果如下：
