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POProblem using the Activiti Rest web services
 

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  1. POProblem using the Activiti Rest web services
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    <blockquote> <p>Edit: to simplify my question, has anyone managed to communicate with Activiti using rest?, and if so could you be kind to post your code. thanks.</p> </blockquote> <p>I've been struggeling for a while to login to Activiti using Rest. I followed the api guides and implemented the following</p> <p>Code:</p> <pre><code>package demo; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.MultivaluedMap; import com.sun.jersey.api.client.Client; import com.sun.jersey.api.client.ClientResponse; import com.sun.jersey.api.client.UniformInterfaceException; import com.sun.jersey.api.client.WebResource; import com.sun.jersey.api.client.config.ClientConfig; import com.sun.jersey.api.client.config.DefaultClientConfig; import com.sun.jersey.core.util.MultivaluedMapImpl; import com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider; public class Aloha { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Client client = Client.create(); WebResource webResource = client .resource("http://localhost:8080/activiti-rest/service/login"); MultivaluedMap&lt;String, String&gt; formData = new MultivaluedMapImpl(); formData.add("userId", "kermit"); formData.add("password", "kermit"); ClientResponse response; try { response = webResource.type("application/x-www-form-urlencoded") .post(ClientResponse.class, formData); // webResource.accept(MediaType.TEXT_PLAIN_TYPE).post(ClientResponse.class, // formData); System.out.print(response.toString()); } catch (UniformInterfaceException ue) { System.out.print(ue.getMessage()); } } } </code></pre> <p>As you can see I am using Jersey to consume the webservice, and here is the response I am getting all time:</p> <p>Quote:</p> <pre><code>POST http://localhost:8080/activiti-rest/service/login returned a response status of 415 Unsupported Media Type </code></pre> <p>Please could you point out what I am doing wrong here?</p> <p>Please note that when I replace the type with "application/json" i get the follow error:</p> <p>Code:</p> <pre><code>Exception in thread "main" com.sun.jersey.api.client.ClientHandlerException: com.sun.jersey.api.client.ClientHandlerException: A message body writer for Java type, class com.sun.jersey.core.util.MultivaluedMapImpl, and MIME media type, application/json, was not found at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:149) at com.sun.jersey.api.client.Client.handle(Client.java:648) at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670) at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:563) at demo.Aloha.main(Aloha.java:32) Caused by: com.sun.jersey.api.client.ClientHandlerException: A message body writer for Java type, class com.sun.jersey.core.util.MultivaluedMapImpl, and MIME media type, application/json, was not found at com.sun.jersey.api.client.RequestWriter.writeRequestEntity(RequestWriter.java:288) at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:204) at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:147) ... 5 more </code></pre> <p>Many Thanks,</p>
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    1. COSee my response on how to do it. Regarding what you doing wrong above - seems Activiti expect json and you are sending form. Later you change to json, but Jersey does not know how to serialize MultivaluedMap into json - that's why you have to create the bean as I suggested in my answer below.
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      1. USMartin Matula
 

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