1 /* 2 * 正则表达式查询 3 */ 4 5 6 import java.io.IOException; 7 8 import org.apache.lucene.analysis.standard.StandardAnalyzer; 9 import org.apache.lucene.document.Document; 10 import org.apache.lucene.document.Field; 11 import org.apache.lucene.index.IndexWriter; 12 import org.apache.lucene.index.Term; 13 import org.apache.lucene.search.Hits; 14 import org.apache.lucene.search.IndexSearcher; 15 import org.apache.lucene.search.regex.RegexQuery; //第三方插件RegexQuery其jar为lucene-regex-2.9.4.jar 16 17 18 19 public class RegexQueryTest { 20 21 private static final String INDEX_STORE_PATH="d:\\testRegexQuery"; 22 23 public static void main(String[] args) throws IOException 24 { 25 //索引 26 indexwriter(INDEX_STORE_PATH); 27 System.out.println("建立索引完毕！"); 28 //查询 29 search(INDEX_STORE_PATH); 30 System.out.println("检索完毕！"); 31 } 32 33 //建立索引 34 public static void indexwriter(String path) throws IOException 35 { 36 IndexWriter writer=new IndexWriter( path ,new StandardAnalyzer(),true); 37 writer.setUseCompoundFile(false); 38 //创建三个文档 39 Document doc1=new Document(); 40 Document doc2=new Document(); 41 Document doc3=new Document(); 42 Document doc4=new Document(); 43 //构建三个URL地址用于正则匹配 44 Field f1=new Field("url","http://www.abc/com/profuct?type=1& cate=5",Field.Store.YES, 45 Field.Index.UN_TOKENIZED); 46 Field f2=new Field("url","http://def.com/product?type=5",Field.Store.YES, 47 Field.Index.UN_TOKENIZED); 48 Field f3=new Field("url","http://ghi/product?type=x",Field.Store.YES, 49 Field.Index.UN_TOKENIZED); 50 Field f4=new Field("url","http://xxx.abc/con/profuct?type=1& cate=5",Field.Store.YES, 51 Field.Index.UN_TOKENIZED); 52 53 doc1.add(f1); 54 doc2.add(f2); 55 doc3.add(f3); 56 doc4.add(f4); 57 writer.addDocument(doc1); 58 writer.addDocument(doc2); 59 writer.addDocument(doc3); 60 writer.addDocument(doc4); 61 62 //close 63 writer.close(); 64 } 65 66 //查询函数 67 public static void search(String path) throws IOException 68 { 69 IndexSearcher searcher=new IndexSearcher(path); 70 //创建正则表达式 71 String regex="].*"; 72 //构建Term 73 Term term=new Term("url",regex); 74 75 RegexQuery query=new RegexQuery(term); 76 77 Hits hits=searcher.search(query); 78 for(int i=0;i<hits.length();i++) 79 System.out.println(hits.doc(i)); 80 } 81 }
