start a case with REST API

Q&A
1

Hi,
I’m trying to start a case with REST API (RestSharp) from an asp Website but I have an exception that I don’t really understand.
This is my code :

req = new RestRequest("loginservice", Method.POST); req.AddParameter("username", tbx_username.Text); req.AddParameter("password", tbx_password.Text); req.AddParameter("redirect", "false"); response = client.Execute(req); 
            if (response.StatusCode == System.Net.HttpStatusCode.OK)
            {

                if (response.Cookies.Count == 1)
                {

                    Session["Cookie"] = response.Cookies[0];
                    Session["Role"] = 0;
                    Session["Username"] = tbx_username.Text;
                   

                    //Instanciation d'un workflow
                    object json = new
                    {
                        processDefinitionId = 0
                    };
                    JsonConvert.SerializeObject(json);

                    req = new RestRequest("API/bpm/case/", Method.POST);
                    req.AddCookie(response.Cookies[0].Name, response.Cookies[0].Value);
                    req.AddHeader("Content-Type", "application/json");
                    req.RequestFormat = DataFormat.Json;
                    req.AddBody(json);

}
}

The connexion works perfectly, I get the cookie and give it to the request.
Anyone can help me ?

This is my exception :

{“exception”:“class java.lang.NullPointerException”,“message”:“”,“stacktrace”:[“org.bonitasoft.web.rest.server.datastore.bpm.cases.CaseSarter.(CaseSarter.java:50)”,“org.bonitasoft.web.rest.server.datastore.bpm.cases.CaseDatastore.add(CaseDatastore.java:143)”,“org.bonitasoft.web.rest.server.api.bpm.cases.APICase.add(APICase.java:51)”,“org.bonitasoft.web.rest.server.api.bpm.cases.APICase.add(APICase.java:42)”,“org.bonitasoft.web.rest.server.framework.API.runAdd(API.java:157)”,“org.bonitasoft.web.rest.server.framework.APIServletCall.doPost(APIServletCall.java:188)”,“org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.doPost(ToolkitHttpServlet.java:188)”,“javax.servlet.http.HttpServlet.service(HttpServlet.java:643)”,“org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.service(ToolkitHttpServlet.java:75)”,“javax.servlet.http.HttpServlet.service(HttpServlet.java:723)”,“org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.service(ToolkitHttpServlet.java:226)”,“org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)”,“org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)”,“org.bonitasoft.console.common.server.login.filter.AbstractAuthorizationFilter.doFilter(AbstractAuthorizationFilter.java:60)”,“org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)”,“org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)”,“org.bonitasoft.console.common.server.login.filter.AbstractAuthorizationFilter.doFilter(AbstractAuthorizationFilter.java:60)”,“org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)”,“org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)”,“org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)”,“org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)”,“org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)”,“org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)”,“org.bonitasoft.console.security.SessionFixationValve.invoke(SessionFixationValve.java:77)”,“org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)”,“org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)”,“org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)”,“org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)”,“org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)”,“java.lang.Thread.run(Thread.java:744)”]}

Cheers :slight_smile:

2

Bonjour Fabien,

Je vous propose de regarder les exemples fournis dans la documentation en ligne :
http://documentation.bonitasoft.com/web-rest-api-examples-0#list_deployed
et de vérifier l’id du processus que vous souhaitez démarrer avec l’appel :
→ get deployed process
http://localhost:8080/bonita/API/bpm/process?p=0&c=10

Il vous retournera un id, et c’est cet id que vous allez utiliser dans votre startcase/code.

Par ailleurs si vous jetez un coup d’oeil à la BDD BonitaBPM table PROCESS_DEFINITION, il faut utiliser la data PROCESSID et non pas la data ID.

Tenez moi au courant.

Cordialement,
LL

3

Bonjour LL,
C’était en effet un problème d’id, je vous remercie de votre aide.
Fabien