本文源码 GitHub:知了一笑 https://github.com/cicadasmile/spring-boot-base
ElasticSearch是一个基于Lucene的搜索服务器。它提供了一个分布式多用户能力的全文搜索引擎,基于RESTful web接口。Elasticsearch是用Java开发的,并作为Apache许可条款下的开放源码发布,是当前流行的企业级搜索引擎。
搭建运行环境
Linux系统:centos7下搭建ElasticSearch中间件,常用接口演示
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> <version>${spring-boot.version}</version> </dependency>
spring: application: name: ware-elastic-search data: elasticsearch: # 默认 elasticsearch cluster-name: elasticsearch # 9200作为Http协议,主要用于外部通讯 # 9300作为Tcp协议,jar之间就是通过tcp协议通讯 cluster-nodes: 192.168.72.130:9300
Document 配置<br/>
加上了@Document注解之后,默认情况下这个实体中所有的属性都会被建立索引、并且分词。<br/>
indexName索引名称 理解为数据库名 限定小写<br/>
type 理解为数据库的表名称<br/>
shards = 5 默认分区数<br/>
replicas = 1 每个分区默认的备份数<br/>
refreshInterval = "1s" 刷新间隔<br/>
indexStoreType = "fs" 索引文件存储类型<br/>
@Document(indexName = "requestlogindex",type = "requestlog") public class RequestLog { //Id注解Elasticsearch里相应于该列就是主键,查询时可以使用主键查询 @Id private Long id; private String orderNo; private String userId; private String userName; private String createTime; }
实现ElasticsearchRepository接口。
public interface RequestLogRepository extends ElasticsearchRepository<RequestLog,Long> { }
数据增加,修改,查询,排序,多条件查询。
@Service public class RequestLogServiceImpl implements RequestLogService { @Resource private RequestLogRepository requestLogRepository ; @Override public String esInsert(Integer num) { for (int i = 0 ; i < num ; i++){ RequestLog requestLog = new RequestLog() ; requestLog.setId(System.currentTimeMillis()); requestLog.setOrderNo(DateUtil.formatDate(new Date(),DateUtil.DATE_FORMAT_02)+System.currentTimeMillis()); requestLog.setUserId("userId"+i); requestLog.setUserName("张三"+i); requestLog.setCreateTime(DateUtil.formatDate(new Date(),DateUtil.DATE_FORMAT_01)); requestLogRepository.save(requestLog) ; } return "success" ; } @Override public Iterable<RequestLog> esFindAll (){ return requestLogRepository.findAll() ; } @Override public String esUpdateById(RequestLog requestLog) { requestLogRepository.save(requestLog); return "success" ; } @Override public Optional<RequestLog> esSelectById(Long id) { return requestLogRepository.findById(id) ; } @Override public Iterable<RequestLog> esFindOrder() { // 用户名倒序 // Sort sort = new Sort(Sort.Direction.DESC,"userName.keyword") ; // 创建时间正序 Sort sort = new Sort(Sort.Direction.ASC,"createTime.keyword") ; return requestLogRepository.findAll(sort) ; } @Override public Iterable<RequestLog> esFindOrders() { List<Sort.Order> sortList = new ArrayList<>() ; Sort.Order sort1 = new Sort.Order(Sort.Direction.ASC,"createTime.keyword") ; Sort.Order sort2 = new Sort.Order(Sort.Direction.DESC,"userName.keyword") ; sortList.add(sort1) ; sortList.add(sort2) ; Sort orders = Sort.by(sortList) ; return requestLogRepository.findAll(orders) ; } @Override public Iterable<RequestLog> search() { // 全文搜索关键字 /* String queryString="张三"; QueryStringQueryBuilder builder = new QueryStringQueryBuilder(queryString); requestLogRepository.search(builder) ; */ /* * 多条件查询 */ QueryBuilder builder = QueryBuilders.boolQuery() // .must(QueryBuilders.matchQuery("userName.keyword", "历张")) 搜索不到 .must(QueryBuilders.matchQuery("userName", "张三")) // 可以搜索 .must(QueryBuilders.matchQuery("orderNo", "20190613736278243")); return requestLogRepository.search(builder) ; } }
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