lucene学习---高亮显示

package src;

import java.io.StringReader;
import java.util.Date;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.cjk.CJKAnalyzer;
import org.apache.lucene.analysis.cn.ChineseAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.FuzzyQuery;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;

import java.util.Date;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
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.highlight.Highlighter;
import org.apache.lucene.search.highlight.QueryScorer;
import org.apache.lucene.search.highlight.SimpleFragmenter;
import org.apache.lucene.search.highlight.SimpleHTMLFormatter;

public class LuceneSearch {
public static void main(String[] args) throws Exception{
LuceneSearch test = new LuceneSearch();
//
Hits h = null;
h = test.search("显示 ");
test.printResult(h);

h = test.search("jy*");
test.printResult(h);

h = test.search("djy");
test.printResult(h);

}
public LuceneSearch(){
try{
searcher = new IndexSearcher(IndexReader.open("E://lucene//test4//index"));
}catch(Exception e){
e.printStackTrace();
}
}
//声明一个IndexSearcher对象
private IndexSearcher searcher = null;
//声明一个Query对象
private Query query = null;
ChineseAnalyzer analyzer = new ChineseAnalyzer();
Highlighter highlighter = null;
public final Hits search(String keyword){
System.out.println("正在检索关键字:"+keyword);
try{
QueryParser qp = new QueryParser("title",analyzer);
query = qp.parse(keyword);

Term term = new Term("content",keyword);
FuzzyQuery fq = new FuzzyQuery(term);
Date start = new Date();

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

//高亮显示设置
SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("<read>","</read>");
highlighter = new Highlighter(simpleHTMLFormatter,new QueryScorer(query));
highlighter.setTextFragmenter(new SimpleFragmenter(10));//这个100是指定关键字字符串的context的长度，你可以自己设定，因为不可能返回整篇正文内容

Date end = new Date();
System.out.println("检索完成,用时"+(end.getTime()-start.getTime())+"毫秒");
return hits;
}catch(Exception e){
e.printStackTrace();
return null;
}

}

public void printResult(Hits h){
if(h.length() == 0){
System.out.println("对不起,没有找到您要的结果.");
}else{
for(int i = 0; i < h.length(); i++){
try{
Document doc = h.doc(i);
System.out.println("这个是"+(i+1)+"个结果:"+doc.get("id")+" title:"+doc.get("title")+" content:"+doc.get("content"));

//高亮出显示
TokenStream tokenStream =analyzer.tokenStream("content", new StringReader(doc.get("title")));
System.out.println(highlighter.getBestFragment(tokenStream,h.doc(i).get("title")));

//System.out.println(doc.get("path"));
}catch(Exception e){
e.printStackTrace();
}
}
}
System.out.println("--------------------------------------");
}
}