jbpm 6.1 remote client not get initialized - rest

Question

I am trying to write a remote jbpm client service in springboot here is the code:
package socius.test.controller;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.process.ProcessInstance;
import org.kie.api.task.TaskService;
import org.kie.services.client.api.RemoteRestRuntimeFactory;
import org.kie.services.client.api.command.RemoteRuntimeEngine;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;()
#RestController
public class JbpmRestController {
#RequestMapping(value="/testClient")
public List loginHome() throws MalformedURLException{
ArrayList<Object> res=new ArrayList<Object>();
String deploymentId="contego:RightToWork-prototype:1.0";
String username="uname";
String password="password";
URL baseUrl = new URL("http://abc/business-central/");
RemoteRestRuntimeFactory restSessionFactory = new RemoteRestRuntimeFactory(deploymentId,baseUrl,username,password);
// Create KieSession and TaskService instances and use them
RemoteRuntimeEngine engine = restSessionFactory.newRuntimeEngine();
KieSession ksession = engine.getKieSession();
TaskService taskService = engine.getTaskService();
ProcessInstance processInstance = ksession.startProcess("id");
res.add(processInstance.toString());
return res;
}
ksession and taskService are successfully created. When I call "startProcess" method on ksession, it will run in to following error :
org.jboss.resteasy.client.ClientResponseFailure: Unable to find a MessageBodyReader of content-type text/html;charset="utf-8" and type null
at org.jboss.resteasy.client.core.BaseClientResponse.createResponseFailure(BaseClientResponse.java:523)
at org.jboss.resteasy.client.core.BaseClientResponse.createResponseFailure(BaseClientResponse.java:514)
at org.jboss.resteasy.client.core.BaseClientResponse.readFrom(BaseClientResponse.java:415)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:377)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:350)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:344)
at org.kie.services.client.api.command.AbstractRemoteCommandObject.executeRestCommand(AbstractRemoteCommandObject.java:406)
at org.kie.services.client.api.command.AbstractRemoteCommandObject.execute(AbstractRemoteCommandObject.java:120)
at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:230)
at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:221)
at socius.test.controller.JbpmRestController.loginHome(JbpmRestController.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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:776)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
my pom file:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>basics.in.java.blogspot</groupId>
<artifactId>basicsInJavaBlogspot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>basicsInJavaBlogspot</name>
<description>A simple crud application using spring mvc jpa and hibernate</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
</properties>
<dependencies>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.0.3.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.kie.remote</groupId>
<artifactId>kie-services-client</artifactId>
<version>6.1.0.Final</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jettison-provider</artifactId>
<version>2.3.6.Final</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>jboss</id>
<url>http://repository.jboss.org/nexus/content/groups/public/</url>
</repository>
</repositories>
</project>
I think the 'org.jboss.resteasy' dependency have some version mismatch or so. and i am facing another problem as well, it says here RemoteRestRuntimeFactory is deprecated , jbpm 6.1 documentation says we can use RemoteRestRuntimeFactory object to create remote rest session. is there any other way to create remote client object to communicate workbench ?