Starting jBPM process with parameters via REST API

[lauradp]

Hello everybody,

I was trying to start a jBPM process via REST API providing a map of key-value parameters.

I tried these url:

* jbpmConsoleUrl + "/rest/runtime/" + deploymentId + "/process/" + processDefId + "/start";

* jbpmConsoleUrl + "/rest/runtime/" + deploymentId + "/withvars/process/" + processDefId + "/start";

* jbpmConsoleUrl + "/rest/runtime/" + deploymentId + "/withvars/process/" + processDefId + "/start" + "?" + encodedParameters;

But in all cases jBPM process gets null parameters.

If I launch process from jbpm-console and fill the predefined form parameters are correctly read.

Can anyone help me?

Laura

[lauradp]

I solved this issue, the right URL was:

jbpmConsoleUrl + "/rest/runtime/" + deploymentId + "/withvars/process/" + processDefId + "/start" + "?" + encodedParameters;

but I omitted map_ prefix in parameters keys.

HTH

Laura

[cjwallac]

Hi Laura,

I was wondering since you were able to pass the parameters in the REST API, how do you then access the values in the jBPM Console? I would like to use them as process variables to assign the task to specific resources.

You input is appreciated as I am not seeing much documentation... unless I have haven't looked in the right place yet.

-CW

[lauradp]

Hi, suppose you have defined var1 and var2 variables in your process.

encodedParameters is built as map_var1=value1&map_var2=value2

In this way you should be able to have value1 and value2 by mapping process variables on tasks parameters.

HTH

Laura

[scarenci]

Hi Laura,

     I am trying to do the same, but its not working! Can you help me to understand what is going on? My parameters is not showing in the human task!

This is my code in angular:

   let url:any = "http://site/processos/rest/runtime/br.com.test:Formulario:1.4/withvars/process/Formulario.formulario/start";

   let body ={

   nome:'start',

   rg:'123456789'

  }

   let httpOptions = {

   headers: new HttpHeaders({

   'Authorization': 'Bearer ' + token,

   'Accept':'application/json',

   'Access-Control-Allow-Origin': '*',

   'Content-Type':'application/json;charset=UTF-8'

  })

  };

  this.http.post(url, body, httpOptions).subscribe(

   res => {

   //success

   console.log("sucesso ao iniciar!");

   alert(res);

  },

   err => {

   console.log("Error ao iniciar:"+err);

  }

  );

  });

In my flow i have setting a "data object" in the process and in the start. Is that correct?

[scarenci]

Its working!

I change the approach to primitive variable as string, int, etc.. and put in the name variable "map_" and in my flow a create a varible and set only in human task and not in start. My post was with x-www-form-urlencoded.

I hope it helps someone