taskService.claim(task.getId(), "aa");
variableMap = new HashMap<String, Object>();
variableMap.put("approved", false);
variableMap.put("applyer", "bb");
taskService.complete(task.getId(), variableMap);
task = taskService.createTaskQuery().taskAssignee("bb").singleResult();
variableMap = new HashMap<String, Object>();
variableMap.put("reApply", false);
taskService.complete(task.getId(), variableMap);