Lucene入门

public class LuceneTest {
//创建索引
    @Test
    public void test1() throws IOException {
        //创建文档对象
        Document document = new Document();
        document.add(new StringField("id","1", Field.Store.YES));
        document.add(new TextField("content","谷歌地图之父跳槽FaceBook", Field.Store.YES));
        Document document1 = new Document();
        document1.add(new StringField("id","2", Field.Store.YES));
        document1.add(new TextField("content","谷歌地图字符加盟FaceBook", Field.Store.YES));

        FSDirectory open = FSDirectory.open(new File("D:\\indexDir"));
        Analyzer analyzer = new StandardAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter writer = new IndexWriter(open, config);
        writer.addDocument(document);
        writer.addDocument(document1);
        writer.commit();
        writer.close();
    }
    @Test
    public void test2() throws IOException {
        Document document = new Document();
        document.add(new StringField("id","1", Field.Store.YES));
        document.add(new TextField("content","谷歌地图之父加盟FaceBook", Field.Store.YES));
        FSDirectory open = FSDirectory.open(new File("D:\\indexDir"));
        Analyzer analyzer = new IKAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter writer = new IndexWriter(open, config);
        writer.addDocument(document);
        writer.commit();
        writer.close();
    }
    //创建索引
    @Test
    public void test3() throws IOException {
        List<Document> list = new ArrayList<>();
        FieldType type = new FieldType();
        type.setIndexed(true);//是否索引
        type.setStored(true);//是否存储
        type.setTokenized(true);//是否分词
        Document d1 = new Document();
        d1.add(new Field("id","1",type));
        d1.add(new TextField("content","传智播客之父跳槽FaceBook，这是真的吗？", Field.Store.YES));
        Document d2 = new Document();
        d2.add(new Field("id","2", type));
        d2.add(new TextField("content","谷歌地图之父加盟FaceBook", Field.Store.YES));
        Document d3 = new Document();
        d3.add(new Field("id","3",type));
        d3.add(new TextField("content","谷歌地图创始人拉斯离开谷歌加盟Facebook", Field.Store.YES));
        Document d4 = new Document();
        d4.add(new Field("id","4",type));
        d4.add(new TextField("content","谷歌地图之父跳槽Facebook与Wave项目取消有关", Field.Store.YES));
        Document d5 = new Document();
        d5.add(new Field("id","5",type));
        TextField field = new TextField("content", "谷歌地图之父拉斯加盟社交网站Facebook", Field.Store.YES);
        field.setBoost(10);
        d5.add(field);
        list.add(d1);
        list.add(d2);
        list.add(d3);
        list.add(d4);
        list.add(d5);
        FSDirectory open = FSDirectory.open(new File("E:\\indexDir"));
        Analyzer analyzer = new IKAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        config.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
        IndexWriter writer = new IndexWriter(open, config);
        writer.addDocuments(list);
        writer.commit();
        writer.close();
    }

    //查询索引
    @Test
    public void test4() throws ParseException, IOException {
        QueryParser parser = new QueryParser("content", new IKAnalyzer());
        Query query = parser.parse("谷歌");
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("E:\\indexDir"))));
        TopDocs topDocs = searcher.search(query, Integer.MAX_VALUE);
        System.out.println(topDocs.totalHits);
        ScoreDoc[] docs = topDocs.scoreDocs;
        for (ScoreDoc sd :
                docs) {
            System.out.println(sd.doc);
            Document doc = searcher.doc(sd.doc);
            System.out.println(doc.get("id"));
            System.out.println(doc.get("content"));
        }
    }

    @Test
    public void test5() throws ParseException, IOException {
        QueryParser content = new QueryParser("content", new IKAnalyzer());
        Query query = content.parse("跳槽");
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("e:\\indexDir"))));
        TopDocs docs = searcher.search(query, Integer.MAX_VALUE);
        System.out.println(docs.totalHits);
        ScoreDoc[] scoreDocs = docs.scoreDocs;
        for (ScoreDoc scoreDoc:
             scoreDocs) {
            System.out.println(scoreDoc.doc);
            Document doc = searcher.doc(scoreDoc.doc);
            System.out.println(doc.get("id")+"-----------------"+doc.get("content"));
        }
    }
    //词条查询
    @Test
    public void test6() throws IOException {
        TermQuery query = new TermQuery(new Term("content", "谷歌地图之父加盟FaceBook"));
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("E:\\indexDir"))));
        TopDocs docs = searcher.search(query, Integer.MAX_VALUE);
        System.out.println(docs.totalHits);
        ScoreDoc[] scoreDocs = docs.scoreDocs;
        for (ScoreDoc sd:
             scoreDocs) {
            System.out.println(sd.doc);
            System.out.println(sd.score);
            Document doc = searcher.doc(sd.doc);
            System.out.println(doc.get("id"));
            System.out.println(doc.get("content"));
        }
    }
    //模糊查询
    @Test
    public void test7() throws IOException {
        WildcardQuery query = new WildcardQuery(new Term("content","*"+"吗"+"*"));
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("E:\\indexDir"))));
        TopDocs topDocs = searcher.search(query, Integer.MAX_VALUE);
        System.out.println("命中数目:"+topDocs.totalHits);
        ScoreDoc[] docs = topDocs.scoreDocs;
        for (ScoreDoc scoreDoc:docs) {
            System.out.println("内置id："+scoreDoc.doc);
            System.out.println("得分:"+scoreDoc.score);
            Document doc = searcher.doc(scoreDoc.doc);
            System.out.println(doc.get("id"));
            System.out.println(doc.get("content"));
        }
    }
    @Test
    public void test8() throws IOException {
        List<Document> list = new ArrayList<>();
        Document document = new Document();
        document.add(new StringField("id","1", Field.Store.YES));
        list.add(document);
        FSDirectory open = FSDirectory.open(new File("E:\\indexDir"));
        IKAnalyzer analyzer = new IKAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter writer = new IndexWriter(open, config);
        writer.addDocuments(list);
        writer.commit();
        writer.close();
    }
    //相似度查询
    @Test
    public void test9() throws IOException {
        FuzzyQuery query = new FuzzyQuery(new Term("content","胡歌"),2);
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("e:\\indexDir"))));
        TopDocs search = searcher.search(query, Integer.MAX_VALUE);
        System.out.println(search.totalHits);
        ScoreDoc[] scoreDocs = search.scoreDocs;
        for (ScoreDoc doc:
             scoreDocs) {
            System.out.println(doc.doc);
            System.out.println(doc.score);
            Document document = searcher.doc(doc.doc);
            System.out.println(document.get("id"));
            System.out.println(document.get("content"));
        }
    }
    //查询索引库所有的内容
    @Test
    public void test10() throws IOException {
        MatchAllDocsQuery query = new MatchAllDocsQuery();
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("e://indexDir"))));
        TopDocs topDocs = searcher.search(query, Integer.MAX_VALUE);
        ScoreDoc[] docs = topDocs.scoreDocs;
        for (ScoreDoc sd :
                docs) {
            System.out.println(sd.doc);
            System.out.println(sd.score);
            Document doc = searcher.doc(sd.doc);
            System.out.println(doc.get("id"));
            System.out.println(doc.get("content"));
        }
    }
    @Test
    public void test11() throws IOException {
        FieldType fieldType = new FieldType();
        fieldType.setStored(true);
        fieldType.setTokenized(true);
        fieldType.setIndexed(true);
        Document document = new Document();
        document.add(new Field("id","1",fieldType));
        document.add(new TextField("content","我就是祁双伟", Field.Store.YES));
        FSDirectory open = FSDirectory.open(new File("e:\\indexDir"));
        IKAnalyzer analyzer = new IKAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter writer = new IndexWriter(open, config);
        writer.updateDocument(new Term("id","4"),document);
        writer.commit();
        writer.close();
    }
    //删除索引
    @Test
    public void test12() throws IOException {
        FSDirectory open = FSDirectory.open(new File("e:\\indexDir"));
        IKAnalyzer analyzer = new IKAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter writer = new IndexWriter(open, config);
        writer.deleteAll();
        writer.commit();
        writer.close();
    }

    //高亮显示
    @Test
    public void test13() throws ParseException, IOException, InvalidTokenOffsetsException {
        QueryParser parser = new QueryParser("content",new IKAnalyzer());
        Query query = parser.parse("谷歌");
//        MatchAllDocsQuery query = new MatchAllDocsQuery();
        SimpleHTMLFormatter formatter = new SimpleHTMLFormatter("<font color='red'>", "</font>");
        Highlighter highlighter = new Highlighter(formatter, new QueryScorer(query));
        Sort sort = new Sort(new SortField("id", SortField.Type.LONG, false));
        IndexSearcher searcher = new IndexSearcher(IndexReader.open(FSDirectory.open(new File("E:\\indexDir"))));
        TopDocs topDocs = searcher.search(query, Integer.MAX_VALUE,sort);
        ScoreDoc[] docs = topDocs.scoreDocs;
        for (ScoreDoc sd :
                docs) {
            System.out.println(sd.doc);
            Document document = searcher.doc(sd.doc);
//            System.out.println(document.get("id"));
            String s = highlighter.getBestFragment(new IKAnalyzer(), "content", document.get("content"));
            System.out.println(s+"得分是："+sd.score);
        }
    }
}