*lucene索引_创建_域选项

【索引建立步骤】

【创建Directory】

【创建writer】

【创建文档并添加索引】

文档和域的概念很重要

文档相当于表中的每一条记录，域相当于表中的每一个字段。

【查询索引的基本信息】

使用IndexReader进行查询。

【实践】

附：

IndexUtil.java：

 package cn.hk.index;

 import java.io.File;
 import java.io.IOException;

 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 import org.apache.lucene.index.CorruptIndexException;
 import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
 import org.apache.lucene.store.LockObtainFailedException;
 import org.apache.lucene.util.Version;

 public class IndexUtil {
     private String[] ids = {"1","2","3","4","5","6"};
     private String[] emails = {"aa@hk.arg","bb@hk.org","cc@hk.arg",
                                "dd@hk.org","ee@hk.org","ff@hk.org"};
     private String[] content = {
             "welcome to visited the space","hello boy","my name is aa","i like football",
             "I like football and I like Basketball too","I like movie and swim"
     };
     private int[] attachs = {2,3,1,4,5,5};
     private String[] names = {"zhangsan","lisi","john","mike","jetty","jake"};

     private Directory directory = null;

     public IndexUtil(){
         try {
             directory = FSDirectory.open(new File("d://lucene/index02"));
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     public void query(){
         try {
             IndexReader reader = IndexReader.open(directory);
             //通过reader可以获取文档的数量
             System.out.println("numDocs:" + reader.numDocs());
             System.out.println("maxDocs" + reader.maxDoc());
         } catch (CorruptIndexException e) {

             e.printStackTrace();
         } catch (IOException e) {

             e.printStackTrace();
         }
     }

     public void index(){
         IndexWriter writer = null;
         try {
             writer = new IndexWriter(directory,new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
             Document doc = null;
             for(int i=0;i<ids.length;i++){
                 doc = new Document();
                 doc.add(new Field("id",ids[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
                 doc.add(new Field("email",emails[i],Field.Store.YES,Field.Index.NOT_ANALYZED));
                 doc.add(new Field("content",content[i],Field.Store.NO,Field.Index.ANALYZED));
                 doc.add(new Field("name",names[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
                 writer.addDocument(doc);
             }
         } catch (CorruptIndexException e) {
             e.printStackTrace();
         } catch (LockObtainFailedException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }finally{
                 if(writer != null)
                     try {
                         writer.close();
                     } catch (CorruptIndexException e) {

                         e.printStackTrace();
                     } catch (IOException e) {

                         e.printStackTrace();
                     }

         }
     }

 }

TestIndex.java：

 package cn.hk.test;

 import org.junit.Test;

 import cn.hk.index.IndexUtil;

 public class TestIndex {

     @Test
     public void testIndex(){
         IndexUtil iu = new IndexUtil();
         iu.index();
     }

     @Test
     public void testQuery(){
         IndexUtil iu = new IndexUtil();
         iu.query();
     }
 }

index()运行结果：

query（）运行结果