*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：

 1 package cn.hk.index;
 2 
 3 import java.io.File;
 4 import java.io.IOException;
 5 
 6 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 7 import org.apache.lucene.document.Document;
 8 import org.apache.lucene.document.Field;
 9 import org.apache.lucene.index.CorruptIndexException;
10 import org.apache.lucene.index.IndexReader;
11 import org.apache.lucene.index.IndexWriter;
12 import org.apache.lucene.index.IndexWriterConfig;
13 import org.apache.lucene.store.Directory;
14 import org.apache.lucene.store.FSDirectory;
15 import org.apache.lucene.store.LockObtainFailedException;
16 import org.apache.lucene.util.Version;
17 
18 public class IndexUtil {
19     private String[] ids = {"1","2","3","4","5","6"};
20     private String[] emails = {"aa@hk.arg","bb@hk.org","cc@hk.arg",
21                                "dd@hk.org","ee@hk.org","ff@hk.org"};
22     private String[] content = {
23             "welcome to visited the space","hello boy","my name is aa","i like football",
24             "I like football and I like Basketball too","I like movie and swim"
25     };
26     private int[] attachs = {2,3,1,4,5,5};
27     private String[] names = {"zhangsan","lisi","john","mike","jetty","jake"};
28     
29     private Directory directory = null;
30     
31     public IndexUtil(){
32         try {
33             directory = FSDirectory.open(new File("d://lucene/index02"));
34         } catch (IOException e) {
35             e.printStackTrace();
36         }
37     }
38     
39     public void query(){
40         try {
41             IndexReader reader = IndexReader.open(directory);
42             //通过reader可以获取文档的数量
43             System.out.println("numDocs:" + reader.numDocs());
44             System.out.println("maxDocs" + reader.maxDoc());
45         } catch (CorruptIndexException e) {
46             
47             e.printStackTrace();
48         } catch (IOException e) {
49             
50             e.printStackTrace();
51         }
52     }
53     
54     
55     public void index(){
56         IndexWriter writer = null;
57         try {
58             writer = new IndexWriter(directory,new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
59             Document doc = null;
60             for(int i=0;i<ids.length;i++){
61                 doc = new Document();
62                 doc.add(new Field("id",ids[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
63                 doc.add(new Field("email",emails[i],Field.Store.YES,Field.Index.NOT_ANALYZED));
64                 doc.add(new Field("content",content[i],Field.Store.NO,Field.Index.ANALYZED));
65                 doc.add(new Field("name",names[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
66                 writer.addDocument(doc);
67             }
68         } catch (CorruptIndexException e) {
69             e.printStackTrace();
70         } catch (LockObtainFailedException e) {
71             e.printStackTrace();
72         } catch (IOException e) {
73             e.printStackTrace();
74         }finally{
75                 if(writer != null)
76                     try {
77                         writer.close();
78                     } catch (CorruptIndexException e) {
79                         
80                         e.printStackTrace();
81                     } catch (IOException e) {
82                         
83                         e.printStackTrace();
84                     }
85             
86         }
87     }
88 
89 }

 

TestIndex.java：

 1 package cn.hk.test;
 2 
 3 import org.junit.Test;
 4 
 5 import cn.hk.index.IndexUtil;
 6 
 7 public class TestIndex {
 8     
 9     @Test
10     public void testIndex(){
11         IndexUtil iu = new IndexUtil();
12         iu.index();
13     }
14     
15     @Test
16     public void testQuery(){
17         IndexUtil iu = new IndexUtil();
18         iu.query();
19     }
20 }

 

index()运行结果：

 

query（）运行结果

 

posted @ 2018-10-31 16:24  猩生柯北  阅读(314)  评论(0)  编辑  收藏  举报