SpringBoot-activiti-获取活动任务列表

Question

我想获得活动的任务列表，使用：

return processEngine.getTaskService().createTaskQuery().active().list();

但是我有一个错误：

10:05:37.238 [http-nio-1061-exec-18] ERROR e.e.e.o.k.f.c.s.ControllerAdvice - Could not write JSON: lazy loading outside command context; nested exception is com.fasterxml.jackson.databind.JsonMappingException: lazy loading outside command context (through reference chain: java.util.ArrayList[0]->org.activiti.engine.impl.persistence.entity.TaskEntityImpl["variableInstances"])

Answer 1

您尝试调用服务并直接返回List，而不是使用List<Map<String, Object>>。请参阅下面的代码片段，它可以帮助你，

public List<Map<String, Object>> getTaskList() {
List<Tasks> taskList = gprocessEngine.getTaskService().createTaskQuery().active().list();
List<Map<String, Object>> customTaskList = new ArrayList<>();
for (Task task : taskList) {
Map<String, Object> map = new LinkedHashMap<>();
map.put("taskId", task.getId());
map.put("taskDefinitionKey", task.getTaskDefinitionKey());
map.put("taskName", task.getName());

customTaskList.add(map);
}
return customTaskList;