SpringBoot整合ElasticSearch整合后访问controller接口报错：Unrecognized SSL message,plaintext connection?

后端报错显示：

java.io.IOException: Unrecognized SSL message, plaintext connection?
	at org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:935) ~[elasticsearch-rest-client-8.7.1.jar:8.7.1]
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:300) ~[elasticsearch-rest-client-8.7.1.jar:8.7.1]
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:288) ~[elasticsearch-rest-client-8.7.1.jar:8.7.1]
	at co.elastic.clients.transport.rest_client.RestClientTransport.performRequest(RestClientTransport.java:153) ~[elasticsearch-java-8.7.1.jar:na]
	at co.elastic.clients.elasticsearch.indices.ElasticsearchIndicesClient.exists(ElasticsearchIndicesClient.java:620) ~[elasticsearch-java-8.7.1.jar:na]
	at co.elastic.clients.elasticsearch.indices.ElasticsearchIndicesClient.exists(ElasticsearchIndicesClient.java:636) ~[elasticsearch-java-8.7.1.jar:na]
	at com.es.demo.ESController.initElastic(ESController.java:31) ~[classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_201]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_201]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_201]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9