【Elasticsearch学习笔记五】es常用的JAVA API、es整合SpringBoot项目中使用、利用JAVA代码操作es、RestHighLevelClient客户端对象

目录

一、Maven项目集成Easticsearch

1）客户端对象

2）索引操作

3）文档操作

4）高级查询

二、springboot项目集成Spring Data操作Elasticsearch

1）pom文件

2）yaml

3）数据实体类

4）配置类

5）Dao数据访问对象

6）索引操作

7）文档操作

8）文档搜索

三、springboot项目集成bboss操作elasticsearch

1）pom文件和配置

2）getConfigRestClientUtil和getRestClientUtil区别

3）创建索引

4）删除索引

5）判断索引是否存在

6）判断索引类型是否存在

7）添加单个文档

8）批量添加文档

9）查询单个文档

---

一、Maven项目集成Easticsearch

        Elasticsearch软件是由 Java 语言开发的，所以也可以通过 Java API 的方式对 Elasticsearch服务进行访问。  修改pom 文件，增加 Maven 依赖关系。

    1.8
    7.4.2



    org.elasticsearch.client
    elasticsearch-rest-high-level-client
    7.4.2

1）客户端对象

        创建类，代码中创建 Elasticsearch 客户端对象因为早期版本的客户端对象已经不再推荐使用，且在未来版本中会被删除，所以这里我们采用高级 REST 客户端对象；

    public static void main(String[] args) throws IOException {
        // 创建客户端对象
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("127.0.0.1", 9200, "http"))
        );
 
        // 关闭客户端连接
        client.close();
    }

2）索引操作

        ES服务器正常启动后，可以通过 Java API 客户端对象对 ES 索引进行操作 ；

public class EsIndex {
 
    public static void main(String[] args) throws IOException {
 
        // 创建客户端对象
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("127.0.0.1", 9200, "http"))
        );
 
        // 关闭客户端连接
        client.close();
    }
 
    // 创建索引
    public static void createIndex(RestHighLevelClient client) throws IOException {
        // 创建索引 - 请求对象
        CreateIndexRequest request = new CreateIndexRequest("user");
        // 发送请求，获取响应
        CreateIndexResponse response = client.indices().create(request, RequestOptions.DEFAULT);
        boolean acknowledged = response.isAcknowledged();
        // 响应状态
        System.out.println("操作状态 = " + acknowledged);
    }
 
    // 查看索引
    public static void getIndex(RestHighLevelClient client) throws IOException {
        // 查询索引 - 请求对象
        GetIndexRequest request = new GetIndexRequest("user");
        // 发送请求，获取响应
        GetIndexResponse response = client.indices().get(request, RequestOptions.DEFAULT);
        System.out.println("aliases: " + response.getAliases());
        System.out.println("mappings: " + response.getMappings());
        System.out.println("settings: " + response.getSettings());
    }
 
    // 删除索引
    public static void deleteIndex(RestHighLevelClient client) throws IOException {
        // 删除索引 - 请求对象
        DeleteIndexRequest request = new DeleteIndexRequest("user");
        // 发送请求，获取响应
        AcknowledgedResponse response = client.indices().delete(request, RequestOptions.DEFAULT);
        // 操作结果
        System.out.println("操作结果: " + response.isAcknowledged());
    }
}

3）文档操作

public class EsDoc {
 
    public static void main(String[] args) throws IOException {
        // 创建客户端对象
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("127.0.0.1", 9200, "http"))
        );
 
        // 关闭客户端连接
        client.close();
    }
 
    // 创建文档
    public static void createDoc(RestHighLevelClient client) throws IOException {
        // 新增文档 - 请求对象
        IndexRequest request = new IndexRequest();
        // 设置索引及唯一性标识
        request.index("user").id("1001");
        // 创建数据对象
        User user = new User();
        user.setAge(26);
        user.setSex("男");
        user.setName("jak");
        ObjectMapper objectMapper = new ObjectMapper();
        String productJson = objectMapper.writeValueAsString(user);
        // 添加文档数据, 数据格式为Json格式
        request.source(productJson, XContentType.JSON);
        // 客户端发送请求，获取响应对象
        IndexResponse response = client.index(request, RequestOptions.DEFAULT);
        // 打印结果信息
        System.out.println("_index: " + response.getIndex());
        System.out.println("id: " + response.getId());
        System.out.println("_result: " + response.getResult());
    }
 
    // 修改文档
    public static void updateDoc(RestHighLevelClient client) throws IOException {
        // 修改文档 - 请求对象
        UpdateRequest request = new UpdateRequest();
        // 配置修改参数
        request.index("user").id("1001");
        // 设置请求体，对数据进行修改
        request.doc(XContentType.JSON, "sex", "女");
        // 客户端发送请求，获取响应对象
        UpdateResponse response = client.update(request, RequestOptions.DEFAULT);
        System.out.println("_index: " + response.getIndex());
        System.out.println("_id: " + response.getId());
        System.out.println("_result: " + response.getResult());
    }
 
    // 查询文档
    public static void getDoc(RestHighLevelClient client) throws IOException {
        // 创建请求对象
        GetRequest request = new GetRequest().index("user").id("1001");
        // 客户端发送请求，获取响应对象
        GetResponse response = client.get(request, RequestOptions.DEFAULT);
        // 打印结果信息
        System.out.println("_index: " + response.getIndex());
        System.out.println("_type: " + response.getType());
        System.out.println("_id: " + response.getId());
        System.out.println("source: " + response.getSourceAsString());
    }
 
    // 删除文档
    public static void deleteDoc(RestHighLevelClient client) throws IOException {
        // 创建请求对象
        DeleteRequest request = new DeleteRequest().index("user").id("1");
        // 客户端发送请求，获取响应对象
        DeleteResponse response = client.delete(request, RequestOptions.DEFAULT);
        // 打印信息
        System.out.println(response.toString());
    }
 
    // 批量新增
    public static void bulkCreateDoc(RestHighLevelClient client) throws IOException {
        // 创建批量新增请求对象
        BulkRequest request = new BulkRequest();
        request.add(new IndexRequest().index("user").id("1001").source(XContentType.JSON, "name", "zhangsan"));
        request.add(new IndexRequest().index("user").id("1002").source(XContentType.JSON, "name", "lisi"));
        request.add(new IndexRequest().index("user").id("1003").source(XContentType.JSON, "name", "wangwu"));
        // 客户端发送请求，获取响应对象
        BulkResponse responses = client.bulk(request, RequestOptions.DEFAULT);
        // 打印结果信息
        System.out.println("took: " + responses.getTook());
        System.out.println("items: " + Arrays.toString(responses.getItems()));
    }
 
    // 批量删除
    public static void bulkDeleteDoc(RestHighLevelClient client) throws IOException {
        // 创建批量删除请求对象
        BulkRequest request = new BulkRequest();
        request.add(new DeleteRequest().index("user").id("1001"));
        request.add(new DeleteRequest().index("user").id("1002"));
        request.add(new DeleteRequest().index("user").id("1003"));
        // 客户端发送请求，获取响应对象
        BulkResponse responses = client.bulk(request, RequestOptions.DEFAULT);
        // 打印结果信息
        System.out.println("took: " + responses.getTook());
        System.out.println("items: " + Arrays.toString(responses.getItems()));
 
    }
}

4）高级查询

public class EsSearch {
 
    public static void main(String[] args) throws IOException {
 
        // 创建客户端对象
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("127.0.0.1", 9200, "http"))
        );
 
        // 关闭客户端连接
        client.close();
    }
 
    // 查询所有索引数据
    public static void matchAllQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.matchAllQuery());
        request.source(sourceBuilder);
 
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
 
    }
 
    // term查询，查询条件为关键字
    public static void termQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.termQuery("age", "30"));
        request.source(sourceBuilder);
 
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 分页查询
    public static void pageQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.matchAllQuery());
 
        // 分页查询
        // 当前页起始索引(第一条数据的顺序号)，from
        sourceBuilder.from(0);
        // 每页显示多少条size
        sourceBuilder.size(2);
 
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 数据排序
    public static void sortOrderQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.matchAllQuery());
 
        // 排序
        sourceBuilder.sort("age", SortOrder.ASC);
 
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 过滤字段
    public static void filterFieldsQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.matchAllQuery());
 
        // 查询字段过滤
        String[] excludes = {};
        String[] includes = {"name", "age"};
        sourceBuilder.fetchSource(includes, excludes);
 
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // Bool查询
    public static void boolQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
 
        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
        // 必须包含
        boolQueryBuilder.must(QueryBuilders.matchQuery("age", "30"));
        // 一定不含
        boolQueryBuilder.mustNot(QueryBuilders.matchQuery("name", "zhangsan"));
        // 可能包含
        boolQueryBuilder.should(QueryBuilders.matchQuery("sex", "男"));
 
        // 查询所有数据
        sourceBuilder.query(boolQueryBuilder);
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 范围查询
    public static void rangeQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
 
        RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("age");
        // 大于等于
        rangeQuery.gte("30");
        // 小于等于
        rangeQuery.lte("40");
 
 
        // 查询所有数据
        sourceBuilder.query(rangeQuery);
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 范围查询
    public static void fuzzyQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
 
        // 查询所有数据
        sourceBuilder.query(QueryBuilders.fuzzyQuery("name", "zhangsan").fuzziness(Fuzziness.ONE));
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 高亮查询
    public static void highLightQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
 
        // 构建查询方式: 高亮查询
        TermsQueryBuilder termsQueryBuilder = QueryBuilders.termsQuery("name", "zhangsan");
        // 设置查询方式
        sourceBuilder.query(termsQueryBuilder);
 
        // 构建高亮字段
        HighlightBuilder highlightBuilder = new HighlightBuilder();
        // 设置标签前缀
        highlightBuilder.preTags("");
        // 设置标签后缀
        highlightBuilder.postTags("");
        // 设置高亮字段
        highlightBuilder.field("name");
        // 设置高亮构建对象
        sourceBuilder.highlighter(highlightBuilder);
        // 设置请求体
        request.source(sourceBuilder);
 
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 聚合查询
    public static void AggrQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.aggregation(AggregationBuilders.max("maxAge").field("age"));
        // 设置请求体
        request.source(sourceBuilder);
        // 客户端发送请求，获取响应对象
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
 
    // 分组统计
    public static void groupQuery(RestHighLevelClient client) throws IOException {
        // 创建搜索请求对象
        SearchRequest request = new SearchRequest();
        request.indices("student");
 
        // 构建查询的请求体
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.aggregation(AggregationBuilders.terms("age_group_by").field("age"));
        // 设置请求体
        request.source(sourceBuilder);
        // 客户端发送请求，获取响应对象
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
 
        // 查询匹配
        SearchHits hits = response.getHits();
        System.out.println("took: " + response.getTook());
        System.out.println("timeout: " + response.isTimedOut());
        System.out.println("total: " + hits.getTotalHits());
        System.out.println("MaxScore: " + hits.getMaxScore());
        System.out.println("hits------------->");
        for (SearchHit hit : hits) {
            // 输出每条查询的结果信息
            System.out.println(hit.getSourceAsString());
        }
        System.out.println("<-----------------");
    }
}

二、springboot项目集成Spring Data操作Elasticsearch

        Spring Data是一个用于简化数据库、非关系型数据库、索引库访问，并支持云服务的开源框架。  其主要目标是使得对数据的访问变得方便快捷，并支持 map reduce 框架和云计算数据服务。 Spring Data 可以极大的简化 JPA Elasticsearch …）的写法，可以在几乎不用写实现的情况下，实现对数据的访问和操作。  除了 CRUD 外，还包括如分页、排序等一些常用的功能。官网地址：https://spring.io/projects/spring-data

        Spring Data Elasticsearch基于 spring data API 简化 Elasticsearch 操作，将原始操作Elasticsearch 的客户端 API 进行封装 。 Spring Data 为 Elasticsearch 项目提供集成搜索引擎。  Spring Data Elasticsearch POJO 的关键功能区域为中心的模型与 Elastichsearch 交互文档和轻松地编写一个存储索引库数据访问层。

1）pom文件

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.3.6.RELEASE
         
    
    com.best
    best-es
    0.0.1-SNAPSHOT
    best-es
    Demo project for Spring Boot
 
    
        8
        8
    
 
    
        
            org.projectlombok
            lombok
            1.16.12
        
 
        
            org.springframework.boot
            spring-boot-starter
        
 
        
            org.springframework.boot
            spring-boot-starter-data-elasticsearch
        
 
        
            org.springframework.boot
            spring-boot-devtools
            runtime
            true
        
 
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
 
        
            org.elasticsearch
            elasticsearch
            7.8.0
        
        
        
            org.elasticsearch.client
            elasticsearch-rest-high-level-client
            7.8.0
        
        
        
            org.apache.logging.log4j
            log4j-api
            2.8.2
        
        
            org.apache.logging.log4j
            log4j-core
            2.8.2
        
        
            com.fasterxml.jackson.core
            jackson-databind
            2.9.9
        
        
        
            junit
            junit
            4.12
        
 
        
            org.springframework.boot
            spring-boot-test
        
 
        
            org.springframework
            spring-test
        
    
 
    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    
 

2）yaml

# 端口号
server:
  port: 8080
 
# es服务地址与端口
elasticsearch:
  host: 127.0.0.1
  port: 9200
 
# 配置日志级别，开启debug日志
logging:
  level:
    com:
      best: debug

3）数据实体类

@Data
@NoArgsConstructor
@AllArgsConstructor
@ToString
@Document(indexName = "shopping", shards = 3, replicas = 1)
public class Product {
 
    // 商品唯一标识, 必须有id, 这里的id 是全局唯一的标识，等同于es中的"_id"
    @Id
    private Long id;
 
    /**
     * type: 字段数据类型
     * analyzer: 分词器类型
     * index: 是否索引(默认:true)
     * Keyword: 短语, 不进行分词
     */
    // 商品名称
    @Field(type = FieldType.Text, analyzer = "ik_max_word")
    private String title;
 
    // 分类名称
    @Field(type = FieldType.Keyword)
    private String category;
 
    // 商品价格
    @Field(type = FieldType.Double)
    private Double price;
 
    // 图片地址
    @Field(type = FieldType.Keyword, index = false)
    private String images;
}

4）配置类

        ElasticsearchRestTemplate是spring-data-elasticsearch项目中的一个类，和其他spring项目中的 template类似。在新版的spring-data-elasticsearch 中，ElasticsearchRestTemplate 代替了原来的ElasticsearchTemplate。原因是ElasticsearchTemplate基于TransportClient，TransportClient即将在8.x 以后的版本中移除。

        我们推荐使用ElasticsearchRestTemplate。ElasticsearchRestTemplate基于RestHighLevelClient客户端的。需要自定义配置类，继承AbstractElasticsearchConfiguration，并实现elasticsearchClient()抽象方法，创建RestHighLevelClient对象。

AbstractElasticsearchConfiguration源码：

public abstract class AbstractElasticsearchConfiguration extends ElasticsearchConfigurationSupport {
 
	//需重写本方法
	public abstract RestHighLevelClient elasticsearchClient();
 
	@Bean(name = { "elasticsearchOperations", "elasticsearchTemplate" })
	public ElasticsearchOperations elasticsearchOperations(ElasticsearchConverter elasticsearchConverter) {
		return new ElasticsearchRestTemplate(elasticsearchClient(), elasticsearchConverter);
	}
}

        需要自定义配置类，继承AbstractElasticsearchConfiguration，并实现elasticsearchClient()抽象方法，创建RestHighLevelClient对象。 

@Data
@Configuration
@ConfigurationProperties(prefix = "elasticsearch")
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {
 
    private String host;
 
    private Integer port;
 
    @Override
    public RestHighLevelClient elasticsearchClient() {
        RestClientBuilder builder = RestClient.builder(new HttpHost(host, port));
        return new RestHighLevelClient(builder);
    }
}

5）Dao数据访问对象

@Repository
public interface ProductDao extends ElasticsearchRepository {
}

6）索引操作

@SpringBootTest
class BestEsApplicationTests {
 
    @Autowired
    private ElasticsearchRestTemplate elasticsearchRestTemplate;
 
    @Test
    public void creatIndex() {
        // 创建索引并增加映射配置
        // 创建索引，系统初始化会自动创建索引
        System.out.println("创建索引");
    }
 
    @Test
    public void deleteIndex() {
        boolean flag = elasticsearchRestTemplate.deleteIndex(Product.class);
        System.out.println("删除索引: " + flag);
    }
 
}

7）文档操作

@SpringBootTest
public class SpringDataEsProductDaoTest {
 
    @Autowired
    private ProductDao productDao;
    
    /**
     * 新增
     */
    @Test
    public void save(){
        Product product = new Product();
        product.setId(2L);
        product.setTitle("华为手机");
        product.setCategory("手机");
        product.setPrice(2999.0);
        product.setImages("http://www.test/hw.jpg");
        productDao.save(product);
    }
    //POSTMAN, GET http://localhost:9200/shopping/_doc/2
 
    //修改
    @Test
    public void update(){
        Product product = new Product();
        product.setId(2L);
        product.setTitle("小米 2 手机");
        product.setCategory("手机");
        product.setPrice(9999.0);
        product.setImages("http://www.test/xm.jpg");
        productDao.save(product);
    }
    //POSTMAN, GET http://localhost:9200/shopping/_doc/2
 
 
    //根据 id 查询
    @Test
    public void findById(){
        Product product = productDao.findById(2L).get();
        System.out.println(product);
    }
 
    @Test
    public void findAll(){
        Iterable products = productDao.findAll();
        for (Product product : products) {
            System.out.println(product);
        }
    }
 
    //删除
    @Test
    public void delete(){
        Product product = new Product();
        product.setId(2L);
        productDao.delete(product);
    }
    //POSTMAN, GET http://localhost:9200/shopping/_doc/2
 
    //批量新增
    @Test
    public void saveAll(){
        List productList = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            Product product = new Product();
            product.setId(Long.valueOf(i));
            product.setTitle("["+i+"]小米手机");
            product.setCategory("手机");
            product.setPrice(1999.0 + i);
            product.setImages("http://www.test/xm.jpg");
            productList.add(product);
        }
        productDao.saveAll(productList);
    }
 
    //分页查询
    @Test
    public void findByPageable(){
        //设置排序(排序方式，正序还是倒序，排序的 id)
        Sort sort = Sort.by(Sort.Direction.DESC,"id");
        int currentPage=0;//当前页，第一页从 0 开始， 1 表示第二页
        int pageSize = 5;//每页显示多少条
        //设置查询分页
        PageRequest pageRequest = PageRequest.of(currentPage, pageSize,sort);
        //分页查询
        Page productPage = productDao.findAll(pageRequest);
        for (Product Product : productPage.getContent()) {
            System.out.println(Product);
        }
    }
}

8）文档搜索

@SpringBootTest
public class SpringDataEsSearchTest {
 
    @Autowired
    private ProductDao productDao;
 
    /**
     * term 查询
     * search(termQueryBuilder) 调用搜索方法，参数查询构建器对象
     */
    @Test
    public void termQuery(){
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", "小米");
        Iterable products = productDao.search(termQueryBuilder);
        for (Product product : products) {
            System.out.println(product);
        }
    }
    /**
     * term 查询加分页
     */
    @Test
    public void termQueryByPage(){
        int currentPage= 0 ;
        int pageSize = 5;
        //设置查询分页
        PageRequest pageRequest = PageRequest.of(currentPage, pageSize);
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("category", "手机");
        Iterable products =
                productDao.search(termQueryBuilder,pageRequest);
        for (Product product : products) {
            System.out.println(product);
        }
    }
 
}

参考原文地址： 

三、springboot项目集成bboss操作elasticsearch

1）pom文件和配置

pom文件引入依赖：

        
            com.bbossgroups.plugins
            bboss-elasticsearch-rest-jdbc
            6.1.8
        
        
            com.bbossgroups.plugins
            bboss-elasticsearch-spring-boot-starter
            6.1.8
        

application.properties配置：

##ES集群配置，支持x-pack和searchguard
#spring.elasticsearch.bboss.elasticUser=elastic
#spring.elasticsearch.bboss.elasticPassword=changeme
 
 
spring.elasticsearch.bboss.elasticsearch.rest.hostNames=192.168.57.128:9200
#spring.elasticsearch.bboss.elasticsearch.rest.hostNames=10.180.211.27:9280,10.180.211.27:9281,10.180.211.27:9282
##https配置，添加https://协议头
#spring.elasticsearch.bboss.default.elasticsearch.rest.hostNames=https://10.180.211.27:9280,https://10.180.211.27:9281,https://10.180.211.27:9282
spring.elasticsearch.bboss.elasticsearch.dateFormat=yyyy.MM.dd
spring.elasticsearch.bboss.elasticsearch.timeZone=Asia/Shanghai
spring.elasticsearch.bboss.elasticsearch.ttl=2d
#在控制台输出脚本调试开关showTemplate,false关闭，true打开，同时log4j至少是info级别
spring.elasticsearch.bboss.elasticsearch.showTemplate=true
spring.elasticsearch.bboss.elasticsearch.discoverHost=false
# dsl配置文件热加载扫描时间间隔，毫秒为单位，默认5秒扫描一次，<= 0时关闭扫描机制
spring.elasticsearch.bboss.dslfile.refreshInterval = -1
 
##es client http连接池配置
spring.elasticsearch.bboss.http.timeoutConnection = 50000
spring.elasticsearch.bboss.http.timeoutSocket = 50000
spring.elasticsearch.bboss.http.connectionRequestTimeout=50000
spring.elasticsearch.bboss.http.retryTime = 1
spring.elasticsearch.bboss.http.maxLineLength = -1
spring.elasticsearch.bboss.http.maxHeaderCount = 200
spring.elasticsearch.bboss.http.maxTotal = 400
spring.elasticsearch.bboss.http.defaultMaxPerRoute = 200
spring.elasticsearch.bboss.http.soReuseAddress = false
spring.elasticsearch.bboss.http.soKeepAlive = false
spring.elasticsearch.bboss.http.timeToLive = 3600000
spring.elasticsearch.bboss.http.keepAlive = 3600000
spring.elasticsearch.bboss.http.keystore =
spring.elasticsearch.bboss.http.keyPassword =
# ssl 主机名称校验，是否采用default配置，
# 如果指定为default，就采用DefaultHostnameVerifier,否则采用 SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER
spring.elasticsearch.bboss.http.hostnameVerifier =

2）getConfigRestClientUtil和getRestClientUtil区别

1. getConfigRestClientUtil获取在配置文件中根据DSL名称定义的DSL并执行它：

写入的params参数在xml文件中通过 #[参数名] 来自动注入到 DSL中

ClientInterface clientUtil = ElasticSearchHelper.getConfigRestClientUtil("esmapper/sql.xml");//define an instanceof ConfigRestClientUtil,It's single instance, multithreaded secure.  
Map params = new HashMap();  
params.put("channelId",1);  
List

2. getRestClientUtil直接执行代码中定义的DSL：

ClientInterface clientUtil = ElasticSearchHelper.getRestClientUtil();//define an instanceof RestClientUtil,It's single instance, multithreaded secure.  
List

3）创建索引

1.普通创建

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *创建索引
     */
    @Test
    public void createIndex(){
        String result = bbossESStarter.getRestClient().createIndiceMapping("blog","");
        System.out.println(result);
    }
}

2.自定义mapping

先创建一个dsl脚本文件，在里面自定义mapping规则：

    //每个property中的name属性表示当前mapping的命名，一个xml文件里可设置多个dsl脚本
        
    

然后创建客户端，并且调用创建索引api：

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *创建索引
     */
    @Test
    public void createIndex(){
        ClientInterface clientUtil = bbossESStarter.getConfigRestClient("esmapper/job.xml");
        String result = clientUtil.createIndiceMapping("51job","create51jobIndex");
        System.out.println(result);
    }
}

4）删除索引

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *删除索引
     */
    @Test
    public void dropIndex(){
        String result = bbossESStarter.getRestClient().dropIndice("blog");
        System.out.println(result);
    }
}

5）判断索引是否存在

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *判断索引是否存在
     */
    @Test
    public void indexIsExists(){
        boolean exist = bbossESStarter.getRestClient().existIndice("51job");
        System.out.println(exist);
    }
}

6）判断索引类型是否存在

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *判断索引类型是否存在
     */
    @Test
    public void typeIsExists(){
        boolean exist = bbossESStarter.getRestClient().existIndiceType("51job","_doc");
        System.out.println(exist);
    }
}

7）添加单个文档

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *指定索引添加单个文档
     */
    @Test
    public void addDocument(){
        Qcpage qcpage=new Qcpage();
        qcpage.setCompany("xxxxxx有限公司").setData("2022-11-22 21:18:12").setJob("Java开发工程师").setPlace("深圳南山").setSalar("13000/月");
        String result = bbossESStarter.getRestClient().addDocument("51job",qcpage);
        System.out.println(result);
    }
}

8）批量添加文档

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
    @Autowired
    QcpageService qcpageService;
 
    /**
     *批量添加文档(此处从mysql取出来1300条数据测试)
     */
    @Test
    public void batchAddDocument(){
        List list=qcpageService.list();
        long startTime = System.currentTimeMillis();
        String result = bbossESStarter.getRestClient().addDocuments("51job",list);
        long endTime = System.currentTimeMillis();
        System.out.println("添加"+list.size()+"条数据耗时:" + (endTime - startTime)/1000 + "s");
        System.out.println(result);
    }
}

9）查询单个文档

@SpringBootTest
class EsBbossTest {
    @Autowired
    private BBossESStarter bbossESStarter;
 
    /**
     *查询一个文档
     */
    @Test
    public void getDocument(){
        String result = bbossESStarter.getRestClient().getDocument("51job","7pJsGXMBBreT5daW4X1w");
        System.out.println(result);
    }
}

参考原文地址：http://t.csdn.cn/hm0y7