1.获取 ElasticsearchClient 实例 具体操作参考本人之前的文章 spring boot3.2 集成 es 8.x 版本工具类 支持认证与非认证的方式（ jdk21)-CSDN博客
2.Query DSL 使用样例如下
java
public void testhttps() {
String host = "17X.20.5X.XXX";
int port = XXX;
String login = "xxx";
String password = "xxx@123";
// Create the transport and the API client
EsRestClientUtil esRestClientUtil = EsRestClientUtil.getInstance();
try (esRestClientUtil) {
var esClient = esRestClientUtil.getElasticsearchHttpClient(host, port, login, password);
JSONObject condition = JSONObject.of("xm.keyword", "张柳");
JSONObject condition1 = JSONObject.of("gmsfhm.keyword", "610102190012120016");
List<JSONObject> esCondition = new ArrayList<>();
List<Query> queries = new ArrayList<>();
condition1.forEach((k, v) -> {
Query byName = MatchQuery.of(m -> m
.field(k)
.query(v.toString())
)._toQuery();
queries.add(byName);
});
// 模糊查询 支持如下四种格式
// Changing a character (box → fox)
//Removing a character (black → lack)
//Inserting a character (sic → sick)
//Transposing two adjacent characters (act → cat)
Query fquzzy = FuzzyQuery.of(fq-> fq.field("user").value("suer1").fuzziness("AUTO"))._toQuery();
// 年龄段查询示例
Query rksj = RangeQuery.of(mq -> mq.field("age").gt(JsonData.of("18")).lte(JsonData.of("40")))._toQuery();
Query rksj1 = RangeQuery.of(mq -> mq.field("rksj").gt(JsonData.of("2020-10-15 14:28:10")).lte(JsonData.of("2022-10-15 14:38:14")).format("yyyy-MM-dd HH:mm:ss"))._toQuery();
// text 类型的时间范围查询示例
Query rksj2 = RangeQuery.of(mq -> mq.field("gxsj.keyword").gt(JsonData.of("2020-10-15 14:28:10")).lte(JsonData.of("2022-10-15 14:38:14")))._toQuery();
// termQuery 写法 类比SQl =
Query termQuery = TermQuery.of(mq -> mq.field("xm.keyword").value("王五"))._toQuery();
// TermsQuery 写法 类比SQL in
List<FieldValue> fieldValues = new ArrayList<>();
fieldValues.add(FieldValue.of("张柳"));
fieldValues.add(FieldValue.of("王五"));
Query query = TermsQuery.of(mq -> mq.field("xm.keyword").terms(ts -> ts.value(fieldValues)))._toQuery();
Query query1 = TermsQuery.of(mq -> mq.field("xm.keyword").terms(ts -> ts.value(List.of(FieldValue.of("张柳"),FieldValue.of("王五")))))._toQuery();
queries.add(termQuery);
SearchResponse<JSONObject> response = esClient.search(es -> es
.index("ads_tag_rk_dd")
.query(q -> q
.bool(b -> b
// .should(s-> s.bool(b1 -> b1.must(b2->b2.bool(s2->s2.should(queries))).must(termQuery)))
.must(fquzzy)
// .must(rksj1)
// .must(rksj2)
// .must(termQuery)
// .
)
)
// 排序写法
.sort(SortOptions.of(so->so.field(FieldSort.of(fs -> fs.field("rksj").order(SortOrder.Desc)))))
.from(0)
.size(3),
JSONObject.class);
List<Hit<JSONObject>> hits = response.hits().hits();
for (Hit<JSONObject> hit : hits) {
JSONObject product = hit.source();
esCondition.add(product);
}
log.info("数据为{}",esCondition);
log.info("总数为{}",response.hits().total().value());
} catch (Exception e) {e.printStackTrace();
}
}