Question

我正在使用Spring和Hibernate项目，我正在使用Hibernate Lucene Search。它搜索得很好但是在显示结果时它会显示如下（即如果我搜索标题）

 [id: 10 | title:easylib, id: 11 | title:IBM, id: 12 | title:Wipro]

但我想要的是它应该只展示'Wipro'，而不是它的id或其他东西

这是我的代码（在标题的POJO类中）：

@Field(index = Index.YES, analyze = Analyze.YES, store = Store.YES)
@Column(name = "title", nullable = false, length = 150)
public String getTitle() {
    return this.title;
}

public void setTitle(String title) {
    this.title = title;
}

这是我的DAO课程

private void doIndex() throws InterruptedException {
            Session session = getSession();

            FullTextSession fullTextSession = Search.getFullTextSession(session);
            fullTextSession.createIndexer().startAndWait();

        }

       private List<CatalogueBase> searchTitle(String queryString) {
            Session session = getSession();
            FullTextSession fullTextSession = Search.getFullTextSession(session);       
            QueryBuilder queryBuilder = fullTextSession.getSearchFactory().buildQueryBuilder().forEntity(CatalogueBase.class).get();
            org.apache.lucene.search.Query luceneQuery = queryBuilder.keyword().onFields("subTitle","publishedplace","title").matching(queryString).createQuery();   
            org.hibernate.Query fullTextQuery = fullTextSession.createFullTextQuery(luceneQuery, CatalogueBase.class);           
            List<CatalogueBase> contactList = fullTextQuery.list();
            return contactList;
        }

    @Override
    public List<CatalogueBase> getSearchDao(String search) throws InterruptedException {
        doIndex();
        List<CatalogueBase> result = searchTitle(search); 
        return result;
    }

Answer 1

我得到了答案，我的错误是

在：

@Override
    public String toString() {
        StringBuilder stringBuilder = new StringBuilder("id: ").append(this.getId()).append(" | title:").append(this.getTitle());
        return stringBuilder.toString();
    }

后：

@Override
    public String toString() {
        StringBuilder stringBuilder = new StringBuilder().append(this.getTitle());
        return stringBuilder.toString();
    }

Answer 2

查询代码未呈现您正在“显示”的输出。我想你可能只是在生成的List<CatalogueBase>上调用 toString（）方法。您说您从查询中获得了正确的结果，现在只需转换CatalogueBase实例。

加载CatalogueBase实例的另一种方法是使用投影：

org.hibernate.Query fullTextQuery = fts.createFullTextQuery(luceneQuery, CatalogueBase.class);
fullTextQuery.setProjection("title");
List contactList = fullTextQuery.list();

Answer 3

确保在您的字段中添加此注释@Field(store = Store.YES)，然后使用fullTextQuery.setProjection("title");，然后才能使用它。

如何为Hibernate Lucene Search创建过滤器

3 个答案: