Lucene4.3.1实例

import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import org.apache.lucene.analysis.Analyzer;import org.apache.lucene.analysis.cn.smart.SmartChineseAnalyzer;import org.apache.lucene.analysis.standard.StandardAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.index.DirectoryReader;import org.apache.lucene.index.IndexReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.queryparser.classic.MultiFieldQueryParser;import org.apache.lucene.queryparser.classic.ParseException;import org.apache.lucene.queryparser.classic.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;public class LuceneStudy {    private String dataSourceFile = "D:\\test\\txt";    private File indexFile=new File("D:\\test\\luceneIndex");    private Analyzer analyzer = new SmartChineseAnalyzer(Version.LUCENE_43,true);      private String[] queryString={"filepath","content"};          public void createIndex() throws IOException {         Directory directory = FSDirectory.open(indexFile);         IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_43, analyzer);          indexWriterConfig.setOpenMode(IndexWriterConfig.OpenMode.CREATE);         IndexWriter writer = new IndexWriter(directory, indexWriterConfig);            File[] files = new File(dataSourceFile).listFiles();          if (files.length > 0) {              long time1 = System.currentTimeMillis();              for (int i = 0; i < files.length; i++) {                  Document document = new Document();                 String content = getTXT(files[i], "GBK");                document.add(new Field("content", content, Field.Store.YES, Field.Index.ANALYZED));                document.add(new Field("filepath", files[i].getName(), Field.Store.YES, Field.Index.ANALYZED));                  writer.addDocument(document);              }              long time2 = System.currentTimeMillis();              System.out.println("创建了" + writer.numDocs() + "索引");                    System.out.println("一共花了" + (time2 - time1) + "时间");         }            writer.close();      }          public void nocnIndex() throws IOException {         Directory directory = FSDirectory.open(indexFile);         Analyzer ana = new StandardAnalyzer(Version.LUCENE_43);       IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_43, ana);          indexWriterConfig.setOpenMode(IndexWriterConfig.OpenMode.CREATE);         IndexWriter writer = new IndexWriter(directory, indexWriterConfig);            File[] files = new File(dataSourceFile).listFiles();          if (files.length > 0) {              long time1 = System.currentTimeMillis();              for (int i = 0; i < files.length; i++) {                  Document document = new Document();                 String content = getTXT(files[i], "GBK");                document.add(new Field("content", content, Field.Store.YES, Field.Index.ANALYZED));                document.add(new Field("filepath", files[i].getName(), Field.Store.YES, Field.Index.ANALYZED));                  writer.addDocument(document);              }              long time2 = System.currentTimeMillis();              System.out.println("创建了" + writer.numDocs() + "索引");                    System.out.println("一共花了" + (time2 - time1) + "时间");         }            writer.close();      }        public void search() throws IOException {      IndexReader reader = DirectoryReader.open(FSDirectory.open(indexFile));    IndexSearcher indexSearcher = new IndexSearcher(reader);        QueryParser queryParser = new MultiFieldQueryParser(Version.LUCENE_43, queryString, analyzer);          Query query = null;try {query = queryParser.parse("人"); } catch (ParseException e) {e.printStackTrace();}          TopDocs topDocs = indexSearcher.search(query, 10000);          System.out.println("一共查到:" + topDocs.totalHits + "记录");        ScoreDoc[] scoreDoc = topDocs.scoreDocs;            for (int i = 0; i < scoreDoc.length; i++) {              int doc = scoreDoc[i].doc;              System.out.println("内部编号:" + doc);            Document mydoc = indexSearcher.doc(doc);              System.out.println("文档路径:" + mydoc.get("filepath"));         }      }          public static String getTXT(File file, String charset) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), charset));         String line = new String();         String temp = new String();                      while ((line = reader.readLine()) != null) {      temp += line;         }         reader.close();         return temp;     }      public static void main(String[] args) throws IOException {    LuceneStudy ls = new LuceneStudy();    //ls.createIndex();    ls.nocnIndex();    ls.search();    }}