ElasticSearch通过api整合java

如需ElasticSearch整合postman基本操作请点击如下链接：

https://blog.csdn.net/m0_61228138/article/details/122862929

    
        org.springframework.data
        spring-data-elasticsearch
        3.1.3.RELEASE
    

//创建ES客户端
RestHighLevelClient esClient = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost",9200,"http")));

//创建索引
CreateIndexRequest request = new CreateIndexRequest("user");
CreateIndexResponse createIndexResponse = esClient.indices().create(request,RequestOptions.DEFAULT);
//响应状态
boolean acknowledged = createIndexResponse.isAcknowledged();

//查询索引
GetIndexRequest request = new GetIndexRequest("user");
GetIndexResponse getIndexResponse = 
esclient.indices().get(request,RequestOptions.DEFAULT);
//响应状态
boolean acknowledged = getIndexResponse.getAliases();//getMappings(),getSettings()

//删除索引
DeleteIndexRequest request = new DeleteIndexRequest("user");
AcknowledgedResponse response = 
esclient.indices().delete(request,RequestOptions.DEFAULT);
//响应状态
boolean acknowledged = response.isAcknowledged();

//插入数据
IndexRequest request = new IndexRequest();
request.index("user").id("1001");

User user = new User("zhangsan","男",20);
//向ES插入数据，必须将数据转换为JSON格式
ObjectMapper mapper = new ObjectMapper();
String userJson = mapper.writevalueAsString(user);
request.source(userJson,XcontentType.JSON);

IndexResponse response = esClient.index(request,RequestOptions.DEFAULT);

response.getResult();

//修改数据
UpdateRequest request = new UpdateRequest();
request.index("user").id("1001");
request.doc(XContentType.JSON,"sex","女")
UpdateResponse response = esClient.update(request,RequestOptions.DEFAULT);

//查询数据
GetRequest request = new GetRequest();
request.index("user").id("1001");
GetResponse response = esClient.get(request,RequestOptions.DEFAULT);

response.getSourceAsString();

//删除数据
DeleteRequest request = new DeleteRequest();
request.index("user").id("1001");
DeleteResponse response = esClient.delete(request,RequestOptions.DEFAULT)
response.toString();

//批量插入数据
BulkRequest request = new BulkRequest();
request.add(new IndexRequest().index("user").id("1001").source(XCntentType.JSON,"name","zhangsan"));
BulkResponse response =  esClient.bulk(request,RequestOptions.DEFAULT)
response.getTook();//getItems()



//高级查询,查询索引中全部数据
SearchRequest request = new SearchRequest();
request.indices("user");

request.source(new SearchSourceBuilder().query(QueryBuilders.matchAllQuery()));

SearchResponse response = esClient.search(request,RequestOptions.DEFAULT);

response.getHits();

//条件查询termQuery
SearchRequest request = new SearchRequest();
request.indices("user");

request.source(new SearchSourceBuilder().query(QueryBuilders.termQuery("age",30)));

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//分页查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
builder.from(0);
builder.size(2);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();


//排序
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
builder.sort("age",SortOrder.DESC);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//过滤字段
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
String[] excludes = {"age"};
String[] includes = {}
builder.fetchSource(includes,excludes);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//组合查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
builder.query(boolQueryBuilder);
boolQueryBuilder.must(QueryBuilders.matchQuery("age",30));
boolQueryBuilder.mustNot(QueryBuilders.matchQuery("sex","男"));
boolQueryBuilder.should(QueryBuilders.matchQuery("age",30));
boolQueryBuilder.should(QueryBuilders.matchQuery("age",40));
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//范围查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("age");
rangeQuery.gte(30);
rangeQuery.lte(40);
builder.query(rangeQuery);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();


//模糊查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
builder.query(QueryBuilders.fuzzyQuery("name","wangwu").fuzziness(Fuzziness.ONE));
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//高亮查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
TermsQueryBuilder termsQueryBuilder = QueryBuilders.termQuery("name","zhangsan");
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.preTags("");
highlightBuilder.field("name");
highlightBuilder.postTags("");
builder.highlighter(highlightBuilder);
builder.query(termsQueryBuilder)
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();


//聚合查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
AggregationBuilder aggregationBuilder = AggregationBuilders.max("maxAge").field("age");

builder.aggregation(aggregationBuilder);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();

//分组查询
SearchRequest request = new SearchRequest();
request.indices("user");
SearchSourceBuilder builder = new SearchSourceBuilder();
AggregationBuilder aggregationBuilder = AggregationBuilders.terms("ageGroup").field("age");

builder.aggregation(aggregationBuilder);
request.source(builder);

SearchResponse response = esClient.search(request,RequestOption.DEFAULT);

response.getHits();


//关闭ES客户端
esClient.close