lucene多种搜索方式详解例子

 

 

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.DateField;
import org.apache.lucene.document.DateTools;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
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 org.apache.lucene.search.QueryFilter;
import org.apache.lucene.search.RangeQuery;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;

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);
  
  h = test.search("料不");
  test.printResult(h);
  
  h = test.search("人");
  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{
   Date start = new Date();
   
   
   /*****  一个关键字，对一个字段进行查询  *****/
   QueryParser qp = new QueryParser("content",analyzer);
   query = qp.parse(keyword);
//   Hits hits = searcher.search(query);
   
   /*****  模糊查询  *****/
//   Term term = new Term("content",keyword);
//   FuzzyQuery fq = new FuzzyQuery(term);
//   Hits hits = searcher.search(fq);
   
   
   
   /*****  一个关键字，在两个字段中查询  *****/
   /*
    * 1.BooleanClause.Occur[]的三种类型：
    *    MUST :  + and
    *    MUST_NOT : - not
    *    SHOULD : or
    * 2.下面查询的意思是：content中必须包含该关键字，而title有没有都无所谓
    * 3.下面的这个查询中，Occur[]的长度必须和Fields[]的长度一致。每个限制条件对应一个字段
    */
//   BooleanClause.Occur[] flags = new BooleanClause.Occur[]{BooleanClause.Occur.SHOULD,BooleanClause.Occur.MUST};
//   query=MultiFieldQueryParser.parse(keyword,new String[]{"title","content"},flags,analyzer);
   
   
   /*****  两个(多个)关键字对两个(多个)字段进行查询,默认匹配规则  *****/
   /*
    * 1.关键字的个数必须和字段的个数相等
    * 2.由于没有指定匹配规定，默认为"SHOULD"
    *   因此，下面查询的意思是："title"中含有keyword1 或 "content"含有keyword2.
    *   在此例中，把keyword1和keyword2相同
    */
//   query=MultiFieldQueryParser.parse(new String[]{keyword,keyword},new String[]{"title","content"},analyzer);


   /*****  两个(多个)关键字对两个(多个)字段进行查询,手工指定匹配规则  *****/
   /*
    * 1.必须 关键字的个数 ==  字段名的个数 ==  匹配规则的个数
    * 2.下面查询的意思是："title"必须不含有keyword1,并且"content"中必须含有keyword2
    */
//   BooleanClause.Occur[] flags = new BooleanClause.Occur[]{BooleanClause.Occur.MUST_NOT,BooleanClause.Occur.MUST};
//   query=MultiFieldQueryParser.parse(new String[]{keyword,keyword},new String[]{"title","content"},flags,analyzer);

   
   /***** 对日期型字段进行查询 *****/
   
   /*****  对数字范围进行查询  *****/
   /*
    * 1.两个条件必须是同一个字段
    * 2.前面一个条件必须比后面一个条件小，否则找不到数据
    * 3.new RangeQuery中的第三个参数，表示是否包含"="
    *   true: >= 或 <=
    *   false: > 或 <
    * 4.找出 55>=id>=53  or  60>=id>=57:
    */
//   Term lowerTerm1 = new Term("id","53");
//   Term upperTerm1 = new Term("id","55");
//   RangeQuery rq1 = new RangeQuery(lowerTerm1,upperTerm1,true);
//   
//   Term lowerTerm2 = new Term("id","57");
//   Term upperTerm2 = new Term("id","60");
//   RangeQuery rq2 = new RangeQuery(lowerTerm2,upperTerm2,true);
//   
//   BooleanQuery bq = new BooleanQuery();
//   bq.add(rq1,BooleanClause.Occur.SHOULD);
//    bq.add(rq2,BooleanClause.Occur.SHOULD);
   
 
   
   
 //  Hits hits = searcher.search(bq);
 
   /*****  排序  *****/
   /*
    * 1.被排序的字段必须被索引过(Indexecd)，在索引时不能 用 Field.Index.TOKENIZED
    *   (用UN_TOKENIZED可以正常实现.用NO时查询正常，但排序不能正常设置升降序)
    * 2.SortField类型
    *   SCORE、DOC、AUTO、STRING、INT、FLOAT、CUSTOM 
    *   此类型主要是根据字段的类型选择
    * 3.SortField的第三个参数代表是否是降序
    *   true:降序  false:升序
    */
//   Sort sort = new Sort(new SortField[]{new SortField("id", SortField.INT, true)});
//   Hits hits = searcher.search(query,sort);
   
   /*
    * 按日期排序
    */
  // Sort sort = new Sort(new SortField[]{new SortField("createTime", SortField.INT, false)});
 
    
    /*****  过滤器 ******/
//    QueryParser qp1 = new QueryParser("content",analyzer);
//    Query fquery  = qp1.parse("我");
//    
//    BooleanQuery bqf = new BooleanQuery();
//   bqf.add(fquery,BooleanClause.Occur.SHOULD);
//    
//   QueryFilter qf = new QueryFilter(bqf);
   
    Hits hits = searcher.search(query);
   
   
   
   
   
   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("结果"+(i+1)+":"+doc.get("id")+" createTime:"+doc.get("createTime")+" title:"+doc.get("title")+"        content:"+doc.get("content"));
    
     //System.out.println(doc.get("path"));
    }catch(Exception e){
     e.printStackTrace();
    }
   }
  }
  System.out.println("--------------------------------------");
 }
}