How to use Bonite Engine api with Liferay portlet?

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I installed BonitaBPMCommunity-7.2.3 and liferay-portal-6.2-ce-ga6. Bonita - http://localhost:28604/bonita; Liferay - http://localhost:8080. I want to use Bonita Engine Api in Liferay portlet. I had configure bonita home in directory “C:_portal\liferay-portal-6.2-ce-ga6\bonita”. My java code:
System.setProperty(BONITA_HOME_KEY, BONITAHOME); System.out.println("Start"); final LoginAPI loginAPI = TenantAPIAccessor.getLoginAPI(); System.out.println("login with install//install"); final APISession session = loginAPI.login("walter.bates", "bpm"); final IdentityAPI identityAPI = TenantAPIAccessor.getIdentityAPI(session); final SearchResult<User> searchUsers = identityAPI.searchUsers(new SearchOptionsBuilder(0, 20).done()); System.out.println("20 first users:"); for (final User user : searchUsers.getResult()) { System.out.println(" * " + user.getUserName() + " -- " + user.getId()); } loginAPI.logout(session); System.out.println("logged out");

I have a error:
05:46:45,227 ERROR [ExceptionHandlerAjaxImpl:69] /views/view.xhtml @14,64 actionListener="#{buttonView.buttonAction}": java.lang.NoSuchMethodError: org.apache.http.entity.StringEntity.<init>(Ljava/lang/String;Lorg/apache/http/entity/ContentType;)V javax.faces.event.AbortProcessingException: /views/view.xhtml @14,64 actionListener="#{buttonView.buttonAction}": java.lang.NoSuchMethodError: org.apache.http.entity.StringEntity.<init>(Ljava/lang/String;Lorg/apache/http/entity/ContentType;)V at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:182) at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:775) at javax.faces.component.UICommand.broadcast(UICommand.java:300) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:786) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1251) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at com.liferay.faces.bridge.BridgePhaseResourceImp