Thanks for your help! I follow your advice and add plugin in my pom.xml, but now there is another problem as follow:
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.elasticsearch.common.logging.DeprecationLogger.<clinit>(DeprecationLogger.java:138)
at org.elasticsearch.common.xcontent.support.AbstractXContentParser.<init>(AbstractXContentParser.java:57)
at org.elasticsearch.common.xcontent.json.JsonXContentParser.<init>(JsonXContentParser.java:44)
at org.elasticsearch.common.xcontent.json.JsonXContent.createParser(JsonXContent.java:103)
at org.elasticsearch.common.settings.Setting.parseableStringToList(Setting.java:832)
at org.elasticsearch.common.settings.Setting.lambda$listSetting$27(Setting.java:786)
at org.elasticsearch.common.settings.Setting.listSetting(Setting.java:791)
at org.elasticsearch.common.settings.Setting.listSetting(Setting.java:786)
at org.elasticsearch.common.network.NetworkService.<clinit>(NetworkService.java:50)
at org.elasticsearch.client.transport.TransportClient.newPluginService(TransportClient.java:98)
at org.elasticsearch.client.transport.TransportClient.buildTemplate(TransportClient.java:126)
at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:268)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:125)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:111)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:101)
at cn.zmhappy.es.Demo.main(CheckFunc.java:37)
Caused by: java.lang.IllegalStateException: Error finding the build shortHash. Stopping Elasticsearch now so it doesn't run in subtly broken ways. This is likely a build bug.
at org.elasticsearch.Build.<clinit>(Build.java:62)
... 16 more
I have no idea about this. Can you give me some help? Thanks!