Springboot使用Hibernate-search插件实现搜索

Hibernate search入门

原理是运用hibernate结合lucene来实现局部索引

1、引入jar包配置（Hibernate和Lucene包）

<dependency>  
    <groupId>org.hibernategroupId>  
    <artifactId>hibernate-search-ormartifactId>  
    <version>4.2.0.Finalversion>  
dependency> 
<dependency>  
    <groupId>org.apache.lucenegroupId>  
    <artifactId>lucene-smartcnartifactId>  
    <version>3.6.2version>  
dependency>

3、给实体类增加注解（注意指定表的索引以及索引设定的分词器）

@Entity  
@Table(name = "PAGEINFO")  
@Indexed(index="PageInfo")/*标记该表可索引，参数index指定存放索引信息的文件名，路径在主配置文件中指定*/  
@Analyzer(impl=SmartChineseAnalyzer.class)//分词器  
public class Pageinfo implements java.io.Serializable {  
    private static final long serialVersionUID = 5454155825314635342L;  
 
  
    @Id  
    @GeneratedValue(generator = "custom-id")  
    @GenericGenerator(name = "custom-id", strategy = "uuid")  
    @Column(name = "ID", unique = true, nullable = false, insertable = true, updatable = true, length = 32)  
    @DocumentId  /*以字段id作为文档id*/  
    public java.lang.String getId() {  
        return this.id;  
    }  
  
    @Column(name = "TITLE", unique = false, nullable = true, insertable = true, updatable = true, length = 255)  
    @Field(store=Store.NO)  /*可索引，但不存储*/  
    public java.lang.String getTitle() {  
        return this.title;  
    }  
  
    @Column(name = "CONTENT", unique = false, nullable = true, insertable = true, updatable = true)  
    @Field(store=Store.NO)   /*可索引，但不存储*/  
    public java.lang.String getContent() {  
        return this.content;  
    }  
  
    @Column(name = "SOURCE", unique = false, nullable = true, insertable = true, updatable = true)  
    @Field(store=Store.NO)   /*可索引，但不存储*/  
    public java.lang.String getSource() {  
        return this.source;  
    }  
  
  
    @Column(name = "SUMMARY", unique = false, nullable = true, insertable = true, updatable = true)  
    @Field(store=Store.NO)   /*可索引，但不存储*/  
    public java.lang.String getSummary() {  
        return this.summary;  
    }  
  
  
    @ManyToOne(cascade = {}, fetch = FetchType.LAZY)  
    @JoinColumns({ @JoinColumn(name = "SITE_ID", nullable = false, insertable = false, updatable = false) })  
    @IndexedEmbedded(prefix="site_",depth=1)  /*关联检索，如field为site_name实则是按关联表的那么属性检索*/  
    public GrabageSiteconfig getGrabageSiteconfig() {  
        return grabageSiteconfig;  
    }  
  
}  

4、使用API做单元测试

public class SearchTest {  
    private static SessionFactory sf;  
      
    @BeforeClass  
    public static void init() {  
        sf = HibernateConfigTest.sf;//弄一个SessionFactory，不多说  
          
    }  
    @Before  
    //执行索引  
    public void index(){  
        Session session = sf.openSession();  
        FullTextSession fullTextSession = Search.getFullTextSession(session);  
        //查出结果  
        List<Pageinfo> pageinfos = session.createCriteria(Pageinfo.class).list();  
        session.beginTransaction();  
        //依次建立索引  
        for (Iterator iterator = pageinfos.iterator(); iterator.hasNext();) {  
            Pageinfo pageinfo = (Pageinfo) iterator.next();  
            fullTextSession.index(pageinfo);  
        }  
        session.getTransaction().commit();  
        session.close();  
        System.out.println("index over......");  
    }  
  
    @Test  
    public void searchTest() {  
        Session session = sf.openSession();  
        FullTextSession fullTextSession = Search.getFullTextSession(session);  
        //在字段content中检索  
        QueryParser queryParser = new QueryParser(Version.LUCENE_36, "content", new SmartChineseAnalyzer(Version.LUCENE_36));  
        Query luceneqQuery=null;  
        try {  
            //检索含有“大风”的信息  
            luceneqQuery = queryParser.parse("大风");  
        } catch (ParseException e) {  
            e.printStackTrace();  
        }  
        //执行检索，得到结果集  
        FullTextQuery fullTextQuery = fullTextSession.createFullTextQuery(luceneqQuery, Pageinfo.class);  
        List<Pageinfo> pageinfos = fullTextQuery.list();  
        //查看结果做验证  
        for (Iterator iterator = pageinfos.iterator(); iterator.hasNext();) {  
            Pageinfo pageinfo = (Pageinfo) iterator.next();  
            System.out.println(pageinfo.getContent());  
        }  
    }  
}  

更详细的资料：

1、注解说明：

注解说明：

@Indexed：让实体支持索引

@Analyzer ：设置分词器，我这里使用的是开源的IK中文分词器

@DocumentID：索引文档ID

@Field ：索引字段，该注解默认属性值为

store=Store.NO：是否将数据存储在索引中，经实验无论store=Store.NO还是store=Store.YES都不会影响最终的搜索。如果store=Store.NO值是通过数据库中获取，如果store=Store.YES值是直接从索引文档中获取。

index=Index.YES：是否索引

analyze=Analyze.YES：是否分词

标注了注解后的实体在保存和更新的时候，会自动生成或修改索引。

2、查询索引

public PageModel<Article> searchArticle(int pageNum, int pageSize, String keyword) {
    FullTextSession fts = Search.getFullTextSession(sessionFactory.getCurrentSession());
    QueryBuilder qb = fts.getSearchFactory().buildQueryBuilder().forEntity(Article.class).get();
    Query luceneQuery = qb.keyword().onFields("title", "content", "description").matching(keyword).createQuery();
    FullTextQuery query = fts.createFullTextQuery(luceneQuery, Article.class);
    query.setFirstResult((pageNum - 1) * pageSize);
    query.setMaxResults(pageSize);
    List<Article> data = query.list();
    //封装分页数据
    PageModel<Article> model = new PageModel<>(pageNum, pageSize, data.size());
    //将数据高亮
    model.setData(SearchUtils.hightLight(luceneQuery, data, "title", "content", "description"));
    return model;
}

3、数据高亮

public static List<Article> hightLight(Query query, List<Article> data, String... fields) {
    List<Article> result = new ArrayList<Article>();
    Formatter formatter = new SimpleHTMLFormatter("", "");
    QueryScorer queryScorer = new QueryScorer(query);
    Highlighter highlighter = new Highlighter(formatter, queryScorer);
    // 使用IK中文分词
    Analyzer analyzer = new IKAnalyzer();
    for (Article a : data) {
    // 构建新的对象进行返回，避免页面错乱（我的页面有错乱）
    Article article = new Article();
    for (String fieldName : fields) {
        // 获得字段值，并给新的文章对象赋值
        Object fieldValue = ReflectionUtils
            .invokeMethod(BeanUtils.getPropertyDescriptor(Article.class, fieldName).getReadMethod(),a);
        ReflectionUtils.invokeMethod(BeanUtils.getPropertyDescriptor(Article.class, fieldName).getWriteMethod(),
            article, fieldValue);
        String hightLightFieldValue = null;
        try {
            hightLightFieldValue = highlighter.getBestFragment(analyzer, fieldName, String.valueOf(fieldValue));
        } catch (Exception e) {
            throw new RuntimeException("高亮显示关键字失败", e);
        }
        // 如果高亮成功则重新赋值
        if (hightLightFieldValue != null) {
            ReflectionUtils.invokeMethod(BeanUtils.getPropertyDescriptor(Article.class, fieldName).getWriteMethod(),
                article,hightLightFieldValue);
        }
        }
        // 赋值ID
        ReflectionUtils.invokeMethod(BeanUtils.getPropertyDescriptor(Article.class, "id").getWriteMethod(),
            article, a.getId());
        result.add(article);
    }
    return result;
}

4、页面迭代显示

<s:iterator value="#request.pageModel.data">
<div class="article">
    <div class="article_title_area">
        <span class="article_title"><a href="${pageContext.request.contextPath }/article/show.action?id=${id }">${title }a>span>
        <span class="article_date">发表时间：<s:date name="postTime" format="yyyy-MM-dd HH:mm:ss"/>span>
    div>
    <div class="article_content">${description }div>
    <div class="article_count_info">
        <span>阅读（${viewCount }）span>
        <span>评论（${comments.size() }）span>
    div>
div>
s:iterator>