flowable-engine | highly efficient workflow and Business Process Management | BPM library

If you want to use forms designed with the Flowable Form Designer, then there are additional API methods to fetch a start form and task form in Flowable. The getTaskFormModel(String taskId) method in TaskService gives you for example the form definition associated with the Task with that id:

https://github.com/flowable/flowable-engine/blob/master/modules/flowable-engine/src/main/java/org/flowable/engine/TaskService.java#L323

If you look in the implementation of this method you can see that it uses the formKey attribute of the userTask element to lookup the form definition based on key.

To get a start form of a process definition you can use the following code to lookup the formKey attribute of the startEvent element and get the form definition by key from the FormEngine:

https://github.com/flowable/flowable-engine/blob/master/modules/flowable-rest/src/main/java/org/flowable/rest/service/api/repository/ProcessDefinitionResource.java#L145

When you retrieved the FormInfo class from the getTaskFromModel method you can use the getFormModel method to retrieve the FormModel interface to get an instance of the Form model. Because the FormModel is made pluggable to make it easier to define your own Form model structure, you need to cast the FormModel interface to SimpleFormModel. From there you can use the getFormFields method to get to the form fields of the form definition.