Lucene学习：创建索引

  1 import org.apache.lucene.analysis.Analyzer;
  2 
  3 import org.apache.lucene.analysis.TokenStream;
  4 
  5 import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
  6 
  7 import org.apache.lucene.analysis.standard.StandardAnalyzer;
  8 
  9 import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
 10 
 11 import org.apache.lucene.document.Document;
 12 
 13 import org.apache.lucene.document.Field;
 14 
 15 import org.apache.lucene.document.StringField;
 16 
 17 import org.apache.lucene.document.TextField;
 18 
 19 import org.apache.lucene.index.DirectoryReader;
 20 
 21 import org.apache.lucene.index.IndexWriter;
 22 
 23 import org.apache.lucene.index.IndexWriterConfig;
 24 
 25 import org.apache.lucene.index.Term;
 26 
 27 import org.apache.lucene.queryparser.classic.ParseException;
 28 
 29 import org.apache.lucene.queryparser.classic.QueryParser;
 30 
 31 import org.apache.lucene.search.*;
 32 
 33 import org.apache.lucene.store.Directory;
 34 
 35 import org.apache.lucene.store.RAMDirectory;
 36 
 37 import org.apache.lucene.util.BytesRef;
 38 
 39 import org.junit.Assert;
 40 
 41 import org.junit.Before;
 42 
 43 import org.junit.Test;
 44 
 45 import org.wltea.analyzer.lucene.IKAnalyzer;
 46 
 47  
 48 
 49 import cn.lmc.myworld.common.lucene.LuceneUtils;
 50 
 51  
 52 
 53 import java.io.IOException;
 54 
 55 import java.io.StringReader;
 56 
 57  
 58 
 59 public class IndexSearchDemo {
 60 
 61     private Directory directory = new RAMDirectory();
 62 
 63     private String[] ids = {"1", "2"};
 64 
 65     private String[] teamname = {"fpx", "ig"};
 66 
 67     private String[] contents = {"涅槃队，凤凰涅槃，勇夺2019LOLS赛冠军!", "翻山队，登峰造极，翻过那座山夺得了2019LOLS赛冠军!"};
 68 
 69     private String[] players = {"doinb,tian,lwx,crisp,gimgoong", "rookie,jacklove,ning,baolan,theshy"};
 70 
 71     private IndexWriterConfig indexWriterConfig = new IndexWriterConfig(new IKAnalyzer());
 72 
 73     private IndexWriter indexWriter;
 74 
 75  
 76 
 77     @Before
 78 
 79     public void createIndex() {
 80 
 81         try {
 82 
 83             indexWriter = new IndexWriter(directory, indexWriterConfig);
 84 
 85             for (int i = 0; i < 2; i++) {
 86 
 87                 Document document = new Document();
 88 
 89                 Field idField = new StringField("id", ids[i], Field.Store.YES);
 90 
 91                 Field teamnameField = new StringField("teamname", teamname[i], Field.Store.YES);
 92 
 93                 Field contentField = new TextField("content", contents[i], Field.Store.YES);
 94 
 95                 Field playersField = new StringField("players", players[i], Field.Store.YES);
 96 
 97                 document.add(idField);
 98 
 99                 document.add(teamnameField);
100 
101                 document.add(contentField);
102 
103                 document.add(playersField);
104 
105                 indexWriter.addDocument(document);
106 
107             }
108 
109             indexWriter.close();
110 
111         } catch (IOException e) {
112 
113             e.printStackTrace();
114 
115         }
116 
117     }
118 
119  
120 
121     @Test
122 
123     public void testTermQuery() throws IOException {
124 
125         Term term = new Term("id", "1");
126 
127         IndexSearcher indexSearcher = getIndexSearcher();
128 
129         TopDocs topDocs = indexSearcher.search(new TermQuery(term), 10);
130 
131         // 1)打印总记录数（命中数）：类似于百度为您找到相关结果约100,000,000个
132 
133      long totalHits = topDocs.totalHits.value;
134 
135      System.out.println("查询（命中）总的文档条数："+totalHits);
136 
137      // LOGGER.info("查询（命中）文档最大分数："+topDocs.getMaxScore());
138 
139      // 2)获取指定的最大条数的、命中的查询结果的文档对象集合
140 
141      ScoreDoc[] scoreDocs = topDocs.scoreDocs;
142 
143      // 打印具体文档
144 
145      for (ScoreDoc scoreDoc : scoreDocs) {
146 
147 int doc = scoreDoc.doc;
148 
149 Document document = indexSearcher.doc(doc);  
150 
151 // 打印content字段的值
152 
153 System.out.println("id: "+document.get("id"));
154 
155 System.out.println("teamname: "+document.get("teamname"));
156 
157 System.out.println("content: "+document.get("content"));
158 
159 System.out.println("players: "+document.get("players"));
160 
161 }
162 
163 }
164 
165 }