lucene.net学习六——多Field多索引文件的查询

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.IO;
using Lucene.Net;
using Lucene.Net.Util;
using Lucene.Net.Store;
using Lucene.Net.Analysis;
using Lucene.Net.Index;
using Lucene.Net.Documents;

namespace TestIndexWriter
{
    class Program
    {
        static void Main(string[] args)
        {
            //需要被索引的目录
            FileInfo fi = new FileInfo(@"F:\doc");
            //索引存放的路径
            Lucene.Net.Store.Directory indexdir = FSDirectory.Open(new DirectoryInfo(@"F:\luceneindex1"));
            //建立一个处理文本的分析器
            Analyzer analyzer = new Lucene.Net.Analysis.Standard.StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29);
            //创建索引写入器
            IndexWriter writer = new IndexWriter(indexdir, analyzer, true, new IndexWriter.MaxFieldLength(10000));
            //递归遍历指定目录下的所有的文件，并建立索引
            IndexDocs(writer, fi);
            Console.WriteLine("索引存放的目录为：F:\\luceneindex1");
            writer.Close();
        }

        //遍历指定目录下的所有文件进行索引
       private static void IndexDocs(IndexWriter writer, FileInfo file)
        { 
           //判断指定的目录是否存在，注意不是文件的路径，C#中目录与文件的区别
            //Directory.Exists()是判断指定的目录是否存在，而File.Exists()则是判断指定的文件是否存在
           if (System.IO.Directory.Exists(file.FullName))
           {   
               //获取指定目录中的所有文件和子目录       
               System.String[] files = System.IO.Directory.GetFileSystemEntries(file.FullName);    
               if (files != null)         
               {                  
                 for (int i = 0; i                  {                  
                   IndexDocs(writer, new System.IO.FileInfo(files[i]));//递归调用
                 }   
               }         
           }
           //不是目录了，是文件，就开始加入索引
           else          
           {            
               System.Console.WriteLine("开始索引文件： " + file.FullName);         
               try             
               {             
                   Document d = new Document();
                   //对路径进行存储、索引但不分词 
                   d.Add(new Field("path",file.FullName, Field.Store.YES, Field.Index.NOT_ANALYZED));
                   d.Add(new Field("contents", new StreamReader(file.FullName, System.Text.Encoding.Default)));   
                   writer.AddDocument(d);           
               }                            
               catch (System.IO.FileNotFoundException fnfe)        
               {               
                   Console.WriteLine(fnfe.Message);         
               }       
           }       
       }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.IO;
using Lucene.Net;
using Lucene.Net.Search;
using Lucene.Net.Store;
using Lucene.Net.Analysis.Standard;
using Lucene.Net.Index;
using Lucene.Net.Documents;
using Lucene.Net.QueryParsers;

namespace MultiFieldMultiSearch
{
    class Program
    {
        static void Main(string[] args)
        {
            //索引存放的路径1
            Lucene.Net.Store.Directory indexdir1 = FSDirectory.Open(new DirectoryInfo(@"F:\luceneindex1"));
            //初始化一个读索引器1
            IndexSearcher IS1 = new IndexSearcher(indexdir1, true);

            //索引存放的路径2
            Lucene.Net.Store.Directory indexdir2 = FSDirectory.Open(new DirectoryInfo(@"F:\luceneindex2"));
            //初始化一个读索引器2
            IndexSearcher IS2 = new IndexSearcher(indexdir2, true);
            //查询器数组
            IndexSearcher[] searchers={IS1,IS2};
            //构造一个多索引的查询器
            MultiSearcher search = new MultiSearcher(searchers);

           //2个需要查询的域名称
            string[] fields={"filename","contents"};         
           //将每个域Field所查询的结果设为“或”的关系，也就是取并集           
            BooleanClause.Occur[] clauses={BooleanClause.Occur.SHOULD,BooleanClause.Occur.SHOULD};
            //构造一个多Field查询
            Query query = MultiFieldQueryParser.Parse(Lucene.Net.Util.Version.LUCENE_29, "郭靖", fields, clauses,
                new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29));
            Console.WriteLine(string.Format("查询条件为：{0}", query.ToString()));
            Hits hits = search.Search(query);
            for (int i = 0; i             {
                //更具文档的编号得到文档对象 
                Document doc = hits.Doc(i);
                //根据给定的Filed名，得到对应的值  
                Console.WriteLine(doc.Get("path"));
                //输出此文档的得分在结果集中
                Console.WriteLine(hits.Score(i));
            }
            search.Close();
        }
    }
}