topic rest api starting a process ,getting back 400 in Alfresco Archive

rest api starting a process ,getting back 400

rascaly2k — Sat, 07 Feb 2015 10:12:16 GMT

Hi I am trying to start a process , with the key name approvalProcessI am using Adavance rest client chrome to test the serviceTo see if its deployed and available I use method : get http://localhost:8081/activiti-rest/service/repository/process-definitions?key=approvalProcessoutput: Status 200 OK{d

Re: rest api starting a process ,getting back 400

jbarrez — Mon, 09 Feb 2015 21:59:10 GMT

the type 'page' is something Activiti does not know.

Did you try it without the variables property?

Re: rest api starting a process ,getting back 400

mignet — Wed, 11 Feb 2015 09:05:57 GMT

I have also met this issue in Activiti 5.17.0,I follow the user guide and test Rest API "15.5.4. Start a process instance" with RestClient.post body like this:
<code>
{
   "processDefinitionId":"oneTaskProcess:1:158",
   "businessKey":"myBusinessKey",
   "variables": [
      {
        "name":"myVar",
        "value":"This is a variable",
      }
   ]
}
</code>
response result:<code>

HTTP Status 400 -

type Status report

message

description The request sent by the client was syntactically incorrect.
Apache Tomcat/7.0.57
</code>
when I remove variables and test again,
<code>
{
   "processDefinitionId":"oneTaskProcess:1:158",
   "businessKey":"myBusinessKey"
}
</code>
I got a 500 error like this:
<code>
HTTP Status 500 - Request processing failed; nested exception is org.activiti.engine.ActivitiException: Unknown property used in expression: ${person.id}
</code>
now,I found that starting a process without process variables is ok,but the process with variables can't.Why?

Re: rest api starting a process ,getting back 400

mignet — Wed, 11 Feb 2015 09:48:36 GMT

Solved!the variables have a special format with a name/value pair.
here is my post body:
<code>
{
    "processDefinitionId": "vacationRequest:1:33",
    "variables": [
        {
            "name": "employeeName",
            "value": "Miss Piggy"
        },
        {
            "name": "numberOfDays",
            "value": "10"
        },
        {
            "name": "startDate",
            "value": "2011-01-11"
        },
        {
            "name": "returnDate",
            "value": "2011-01-11"
        },
        {
            "name": "vacationMotivation",
            "value": "tired"
        }
    ]
}
</code>
Everything is All Right!