基于Spring-Boot框架的Elasticsearch搜索服务器配置

一、相关包maven配置

 <!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-elasticsearch -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-elasticsearch</artifactId>
            <version>1.3.6.RELEASE</version>
        </dependency>    

spring-boot  1.3.8.RELEASE能支持配置注解故，elasticsearch的配置可以在 xxx.properties文件中配置

# ELASTICSEARCH (ElasticsearchProperties)
spring.data.elasticsearch.cluster-name=elasticsearch
spring.data.elasticsearch.cluster-nodes=192.9.8.222:9300
spring.data.elasticsearch.repositories.enabled=true

这样可以通过框架自动注入实例化类

    @Autowired
    private ElasticsearchTemplate elasticsearchTemplate;

二、处理ES返回数据

获取搜索内容：

    // 空条件查询默认匹配全部
        NativeSearchQueryBuilder nsbIndex = new NativeSearchQueryBuilder();
        MatchAllQueryBuilder qbIndex = QueryBuilders.matchAllQuery();
        
        // 设置分页参数
        Pageable pageable = new PageRequest(page, limit);
        nsbIndex.withPageable(pageable);
        nsbIndex.withQuery(qbIndex);
        SearchQuery searchQuery = nsbIndex.build(); 
        Page<IndexSearch> pageIndexes = null;
        try {
            pageIndexes = elasticsearchTemplate.queryForPage(searchQuery, IndexSearch.class, new ElasticsearchResultMapper(heightFields));
        } catch (Exception e) {
            throw new YMLibWebApplicationException("搜索条件为空,查询全部文献出错,出错原因：" + e.getMessage(), e);
        }
       List<IndexSearch> indexes = pageIndexes.getContent();
       .......

处理个性化设置类，如高亮显示属性：

上图红色部分类是一个个性化设置类，继承重写了SearchResultMapper 的mapResults方法

public class ElasticsearchResultMapper implements SearchResultMapper {
    private static Logger log = LoggerFactory.getLogger(ElasticsearchResultMapper.class);
    
    private final List<String> heightFields = new ArrayList<String>();
    
    public ElasticsearchResultMapper(){
        
    }
    
    public ElasticsearchResultMapper(List<String> heightFields){
        this.heightFields.addAll(heightFields);
    }

    @Override
    public <T> FacetedPage<T> mapResults(SearchResponse response, Class<T> clazz, Pageable pageable) {
        // TODO Auto-generated method stub
        // 将返回的结果标记指定的属性高亮显示
        List<Object> chunk = setHighlightFieldsForSearchHits(response, heightFields);
        // 该搜索条件总共命中多少条数据
        long totalHits = response.getHits().totalHits();
        // System.out.println("totalHits = "+totalHits);
        return new FacetedPageImpl((List<T>) chunk, pageable, totalHits);
    }
    
    
    /**
     * 
     * @remark:[]
     * @author:hoojjack
     * @Description:TODO(对返回的结果设置高亮属性)
     */
    public List<Object> setHighlightFieldsForSearchHits(@NotNull SearchResponse response,
            @NotNull final List<String> heightFields) {
        if (0 == heightFields.size()) {
            System.out.println("heightFields不能为空");
            return null;
        }
        List<Object> chunk = new ArrayList<Object>();
        for (SearchHit searchHit : response.getHits()) {
            // 打印出_score
//            System.out.println("searchHitScore = " + searchHit.getScore() + "searchHitSource=" + searchHit.getSource());
            if (response.getHits().getHits().length <= 0) {
                log.info("未命中搜索结果");
                return null;
            }
            Map<String, Object> entityMap = searchHit.getSource();
            if (null == entityMap) {
                log.error("搜索返回的结果中无_source属性值");
                entityMap = new HashMap<String, Object>();
            }
            for (String highName : heightFields) {
                //枚举类型属性不能标亮显示,标亮显示会多久一些标识，导致找不到相对应的枚举类型
                if("literClassfication".equals(highName)){
                    continue;
                }
                if (null != searchHit.getHighlightFields().get(highName)) {
                    Text text[] = searchHit.getHighlightFields().get(highName).fragments();
                    if (text.length > 0) {
                        String highValue = searchHit.getHighlightFields().get(highName).fragments()[0].toString();
                        entityMap.put(highName, highValue);
                    }
                }
            }
            chunk.add(entityMap);
        }
        return chunk;
    }

}

以上只是学习的一部分记录，随着学习的深入，再继续更新！