1:以前用3.5的时候，到现在也差不多忘了，重新看了下文档，写个简单的例子
lucene4.0中有很多新的东西，其中Field类主要不能new Field()要通过其子类去实现比如new StringField()等，对分词等参数也有部分变化。
创建索引的代码如下：
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package com.search.lucene;
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import java.io.File;
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import org.apache.lucene.analysis.Analyzer;
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import org.apache.lucene.analysis.standard.StandardAnalyzer;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.document.Field.Store;
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import org.apache.lucene.document.StringField;
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import org.apache.lucene.document.TextField;
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import org.apache.lucene.index.IndexWriter;
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import org.apache.lucene.index.IndexWriterConfig;
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import org.apache.lucene.store.Directory;
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import org.apache.lucene.store.FSDirectory;
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import org.apache.lucene.util.Version;
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import org.junit.Before;
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import org.junit.Test;
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public class IndexFile {
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protected String[] ids={"1", "2"};
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protected String[] content={"Amsterdam has lost of add cancals", "i love add this girl"};
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protected String[] city={"Amsterdam", "Venice"};
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private Directory dir;
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@Test
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public void init() throws Exception {
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String pathFile="D://lucene/index";
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dir=FSDirectory.open(new File(pathFile));
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IndexWriter writer=getWriter();
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for(int i=0; i < ids.length; i++) {
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Document doc=new Document();
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doc.add(new StringField("id", ids[i], Store.YES));
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doc.add(new TextField("content", content[i], Store.YES));
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doc.add(new StringField("city", city[i], Store.YES));
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writer.addDocument(doc);
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}
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System.out.println("init ok?");
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writer.close();
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}
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public IndexWriter getWriter() throws Exception {
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Analyzer analyzer=new StandardAnalyzer(Version.LUCENE_40);
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IndexWriterConfig iwc=new IndexWriterConfig(Version.LUCENE_40, analyzer);
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return new IndexWriter(dir, iwc);
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}
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}
说明下：lucene4.0中有核心包和其他包:我导入
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package com.search.lucene;
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import java.io.File;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.index.DirectoryReader;
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import org.apache.lucene.index.IndexReader;
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import org.apache.lucene.index.Term;
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import org.apache.lucene.search.IndexSearcher;
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import org.apache.lucene.search.ScoreDoc;
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import org.apache.lucene.search.TermQuery;
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import org.apache.lucene.search.TopDocs;
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import org.apache.lucene.store.Directory;
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import org.apache.lucene.store.FSDirectory;
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import org.junit.Test;
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public class IndexSearch {
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@Test
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public void search() throws Exception {
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String filePath="D://lucene/index";
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Directory dir=FSDirectory.open(new File(filePath));
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IndexReader reader=DirectoryReader.open(dir);
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IndexSearcher searcher=new IndexSearcher(reader);
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Term term=new Term("content", "add");
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TermQuery query=new TermQuery(term);
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TopDocs topdocs=searcher.search(query, 5);
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ScoreDoc[] scoreDocs=topdocs.scoreDocs;
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System.out.println("查询结果总数---" + topdocs.totalHits+"最大的评分--"+topdocs.getMaxScore());
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for(int i=0; i < scoreDocs.length; i++) {
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int doc = scoreDocs[i].doc;
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Document document = searcher.doc(doc);
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System.out.println("content===="+document.get("content"));
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System.out.println("id--" + scoreDocs[i].doc + "---scors--" + scoreDocs[i].score+"---index--"+scoreDocs[i].shardIndex);
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}
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reader.close();
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}
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}
