# Initializing a Transport Client in Java EE webapp
**URL:** https://discuss.elastic.co/t/initializing-a-transport-client-in-java-ee-webapp/57001
**Category:** Elasticsearch
**Created:** [August 2, 2016, 11:42am UTC](https://discuss.elastic.co/t/initializing-a-transport-client-in-java-ee-webapp/57001 "2016-08-02T11:42:43Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Nitin\_Vats](https://discuss.elastic.co/u/Nitin_Vats)
#### Post date: [August 2, 2016, 11:42am UTC](https://discuss.elastic.co/t/initializing-a-transport-client-in-java-ee-webapp/57001/1 "2016-08-02T11:42:44Z")
I am using elasticSearch for my webapp and using Transport Client for connection it is showing following error. I have attached my implementation code too.
Note:- Netty.jar is in my maven dependencies though I haven't included it in my Project's POM.
Aug 02, 2016 12:06:30 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [mvc-dispatcher] in context with path [/kareermatrix] threw exception [Handler processing failed; nested exception is java.lang.VerifyError: (class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: newWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function] with root cause java.lang.VerifyError: (class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: newWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function at org.elasticsearch.transport.netty.NettyTransport.createClientBootstrap(NettyTransport.java:344) at org.elasticsearch.transport.netty.NettyTransport.doStart(NettyTransport.java:279) at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:68) at org.elasticsearch.transport.TransportService.doStart(TransportService.java:182) at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:68) at org.elasticsearch.client.transport.TransportClient$Builder.build(TransportClient.java:162) at com.kareermatrix.api.web.es.ElasticSearchImpl.(ElasticSearchImpl.java:58) at com.kareermatrix.api.web.es.ElasticSearch$Factory.(ElasticSearch.java:95) at com.kareermatrix.v1.employer.controller.EmployerProfileController.elasticSearchCheck(EmployerProfileController.java:505) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:30pm UTC](https://discuss.elastic.co/t/initializing-a-transport-client-in-java-ee-webapp/57001/2 "2017-07-05T22:30:50Z")