【Lucene最终总结】

package org.itat.test;import java.io.File;import org.apache.lucene.analysis.Analyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.index.IndexReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.queryParser.MultiFieldQueryParser;import org.apache.lucene.queryParser.QueryParser;import org.apache.lucene.search.IndexSearcher;import org.apache.lucene.search.Query;import org.apache.lucene.search.ScoreDoc;import org.apache.lucene.search.TopDocs;import org.apache.lucene.store.Directory;import org.apache.lucene.store.FSDirectory;import org.apache.lucene.util.Version;import com.chenlb.mmseg4j.analysis.MMSegAnalyzer;public class SearcherUtils{private String[] names ={ "美丽的青春", "课程" };private String[] contents ={ "漂亮神奇", "数学语文" };private Directory directory;public void makeIndex(){try{// 1,创建索引Directorydirectory = FSDirectory.open(new File("c:/lucene/index"));// 2,创建IndexWriterIndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_35,new MMSegAnalyzer());IndexWriter indexWriter = new IndexWriter(directory, config);//删除所有索引indexWriter.deleteAll();// 3,创建文档DocumentDocument document = null;// 4,为Document添加域Fieldfor (int i = 0; i < 2; i++){document = new Document();document.add(new Field("name", names[i], Field.Store.YES,Field.Index.ANALYZED));document.add(new Field("content", contents[i], Field.Store.YES,Field.Index.ANALYZED));// 5，通过indexWriter把document添加到索引directory中indexWriter.addDocument(document);}indexWriter.close();} catch (Exception e){e.printStackTrace();}}public void searchFormIndex(String[] fields,String word){try{// 1.得到索引directory = FSDirectory.open(new File("c:/lucene/index"));// 2.创建IndexReaderIndexReader reader = IndexReader.open(directory);// 3.根据IndexReader创建IndexSercherIndexSearcher indexSearcher = new IndexSearcher(reader);// 4.创建搜索的QueryAnalyzer analyzer = new MMSegAnalyzer();// 5.多域搜索QueryParser parser = new MultiFieldQueryParser(Version.LUCENE_35,fields, analyzer);Query query = parser.parse(word);// 6.根据sercher搜索并返回TopDocsTopDocs topDocs = indexSearcher.search(query, 10);// 7.根据TopDocs获取ScoreDoc对象ScoreDoc scoreDocs[] = topDocs.scoreDocs;for (ScoreDoc scoreDoc : scoreDocs){// 8.根据sercher对象和Scoredoc对象获取Document对象Document document = indexSearcher.doc(scoreDoc.doc);// 9.根据Document对象获取需要的值System.out.println(document.get("name") +  document.get("content"));}reader.close();} catch (Exception e){e.printStackTrace();}}}