项目结构：
效果图：
需要建立索引的文件(我们需要从中查找出关键字的文档)
建立好的所有文件
搜索关键字”lucene”信息
大家是不是也想亲自动手尝试一下呢…
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代码部分
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准备工作：
下载：lucene-3.5.0.zip
下载地址：
下载完后，香港服务器，美国空间，解压缩，香港空间，可以得到：
lucene-core-3.5.0.jar
junit-4.7.jar
把这两个jar包加入到项目构建路径下面…看看—–>项目结构
/lucene_0100_helloworld/src/com/b510/lucene/LuceneIndex.java
* com.b510.lucene; java.io.File; 7 import java.io.FileReader; 8 import java.io.IOException; org.apache.lucene.analysis.standard.StandardAnalyzer; 11 import org.apache.lucene.document.Document; 12 import org.apache.lucene.document.Field; 13 import org.apache.lucene.index.CorruptIndexException; 14 import org.apache.lucene.index.IndexReader; 15 import org.apache.lucene.index.IndexWriter; 16 import org.apache.lucene.index.IndexWriterConfig; 17 import org.apache.lucene.queryParser.ParseException; 18 import org.apache.lucene.queryParser.QueryParser; 19 import org.apache.lucene.search.IndexSearcher; 20 import org.apache.lucene.search.Query; 21 import org.apache.lucene.search.ScoreDoc; 22 import org.apache.lucene.search.TopDocs; 23 import org.apache.lucene.store.Directory; 24 import org.apache.lucene.store.FSDirectory; 25 import org.apache.lucene.store.LockObtainFailedException; 26 import org.apache.lucene.util.Version; * Lucene create Index and search key word 30 * Hongten (hongtenzone@foxmail.com) <br /> 32 * @date 2012-11-28 LuceneIndex {* 创建索引 index() { 40IndexWriter writer = null; 41try { 42// 1.创建Directory 43// 这种方式是建立在内存中 44// Directory directory = new RAMDirectory();Directory directory = FSDirectory.open(new File( 47″D:/WordPlace/lucene/lucene_0100_helloworld/lucene/index”));IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_35, 50new StandardAnalyzer(Version.LUCENE_35)); 51 52writer = new IndexWriter(directory, iwc);Document doc = null;File f = new File( 57″D:/WordPlace/lucene/lucene_0100_helloworld/lucene/example”); 58for (File file : f.listFiles()) { 59doc = new Document(); 60doc.add(new Field(“content”, new FileReader(file))); 61doc.add(new Field(“filename”, file.getName(), Field.Store.YES, 62 Field.Index.NOT_ANALYZED)); 63doc.add(new Field(“path”, file.getAbsolutePath(), 64 Field.Store.YES, Field.Index.NOT_ANALYZED));writer.addDocument(doc); 67 } 68} catch (CorruptIndexException ce) { 69 ce.printStackTrace(); 70} catch (LockObtainFailedException e) { 71 e.printStackTrace(); 72} catch (IOException e) { 73 e.printStackTrace(); 74} finally { 75try { 76if (writer != null) { 77 writer.close(); 78 } 79} catch (CorruptIndexException e2) { 80 e2.printStackTrace(); 81} catch (IOException ioe) { 82 ioe.printStackTrace(); 83 } 84 } 85 }* 搜索关键字为key的n条记录 89 * key 91 *关键字 n 93 *搜索的记录数search(String key, int n) { 96try {Directory directory = FSDirectory.open(new File( 99″D:/WordPlace/lucene/lucene_0100_helloworld/lucene/index”));IndexReader reader = IndexReader.open(directory);IndexSearcher searcher = new IndexSearcher(reader);104// 4.创建搜索的QueryQueryParser parser = new QueryParser(Version.LUCENE_35, “content”,107new StandardAnalyzer(Version.LUCENE_35));Query query = parser.parse(key);TopDocs tds = searcher.search(query, n);ScoreDoc[] sds = tds.scoreDocs;114for (ScoreDoc sd : sds) {Document document = searcher.doc(sd.doc);System.out.println(“文件名称：[” + document.get(“filename”)119+ “] 文件路径：[” + document.get(“path”) + “]”);120 }reader.close();124} catch (CorruptIndexException e) {125 e.printStackTrace();126} catch (IOException e) {127 e.printStackTrace();128} catch (ParseException e) {129 e.printStackTrace();130 }131 }132 133 }天再高又怎样，踮起脚尖就更接近阳光。
