Lucene6.0基础教学

最新推荐文章于 2024-05-03 21:05:18 发布

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#Lucene6-0入 #测试 #lucene

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本文介绍了一个使用 Lucene 6.0 的简易示例，包括如何建立索引、搜索文档等基本操作。示例中创建了两个文章对象，并通过内存方式建立索引，演示了基于 ID 和内容的查询。

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Lucene6.0测试demo

这里是相关的实体类，没有相关的理论需要的可以自行百度

public class Article {

    private Integer id ;
    private String name;
    private String content;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }

    public Article() {
    }
    public  Article(Integer id,String name,String content) {
        this.content=content;
        this.id = id ;
        this.name = name ;
    }

}

话不多说直接上代码一个相当简单的测试用例因为Lucene6.0的版本中有一点改变所以我们直接将相关的索引建立在内存中的当然也可以固定到磁盘中去

public static void main(String[] args) throws Exception {
        //創建内存對象
        Directory directory = new RAMDirectory();
        //创建分词器对象
        IndexWriterConfig config = new IndexWriterConfig(new StandardAnalyzer());
        //创建indexwriter
        IndexWriter writer = new IndexWriter(directory, config);
        //创建节点对象
        Document document = new Document();
        Document document2 = new Document();
        //创建文章对象
        Article article = new Article(1, "Java学习技术", "21世纪最伟大的Java技术依然成为了世界人民关注的焦点");
        Article article2 = new Article(2, "PHP学习技术", "21世纪最伟大的Java技术依然成为了世界人民关注的焦点");
        //添加
        document.add(new Field("id", article.getId().toString(), TextField.TYPE_STORED));
        document.add(new Field("name", article.getName(), TextField.TYPE_STORED));
        document.add(new Field("content", article.getContent(), TextField.TYPE_STORED));
        document2.add(new Field("id", article2.getId().toString(), TextField.TYPE_STORED));
        document2.add(new Field("name", article2.getName(), TextField.TYPE_STORED));
        document2.add(new Field("content", article2.getContent(), TextField.TYPE_STORED));
        //添加索引
        writer.addDocument(document);
        writer.addDocument(document2);
        //关闭相应的写的方法
        writer.close();

        //读取相应的读
        DirectoryReader  directReader = DirectoryReader.open(directory);
        //得到查询
        IndexSearcher searcher = new IndexSearcher(directReader);

        //封装查询对象
        Query query = new TermQuery(new Term("id", "2"));

        Query query2 = new TermQuery(new Term("content", "人"));

        TopDocs search = searcher.search(query, 100);
        for (int i = 0; i < search.scoreDocs.length; i++) {
            // search.scoreDocs[i].doc 是获取索引中的标志位id, 从0开始记录    
            int doc = search.scoreDocs[i].doc;
            //得到查询对象
            Document doc2 = searcher.doc(doc);

            System.out.println( "------>"+doc2.getField("id"));
            System.out.println( "------>"+doc2.getField("name"));
            System.out.println( "------>"+doc2.getField("content"));
        }



    }

相关的pom文件

<dependency>  
            <groupId>org.apache.lucene</groupId>  
            <artifactId>lucene-core</artifactId>  
            <version>6.0.0</version>  
        </dependency>  

        <dependency>  
            <groupId>org.apache.lucene</groupId>  
            <artifactId>lucene-highlighter</artifactId>  
            <version>6.0.0</version>  
        </dependency>  

        <!-- http://mvnrepository.com/artifact/org.apache.lucene/lucene-analyzers-common -->  
        <dependency>  
            <groupId>org.apache.lucene</groupId>  
            <artifactId>lucene-analyzers-common</artifactId>  
            <version>6.0.0</version>  
        </dependency>  

        <!-- http://mvnrepository.com/artifact/org.apache.lucene/lucene-memory -->  
        <dependency>  
            <groupId>org.apache.lucene</groupId>  
            <artifactId>lucene-memory</artifactId>  
            <version>6.0.0</version>  
        </dependency>  

        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.9</version>  
        </dependency>  

        <!-- http://mvnrepository.com/artifact/org.apache.lucene/lucene-queryparser -->  
        <dependency>  
            <groupId>org.apache.lucene</groupId>  
            <artifactId>lucene-queryparser</artifactId>  
            <version>6.0.0</version>  
        </dependency>