使用Activiti创建本机查询

Question

您好我正在使用activiti工作流程。我想在primefaces数据表中获得所有候选用户的所有任务。所以我正在编写一个本机查询来获取这些值，但我在managementService上有一个null值。我需要实现这个类吗？还是我需要导入一个库？我该怎么办？

@Autowired
private static ManagementService managementService;

 public static List<Task> retrieveAllTasks(){
    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    TaskService taskService = processEngine.getTaskService();

    String taskTable = managementService.getTableName(TaskEntity.class);
    String identityLinkTable = managementService.getTableName(IdentityLinkEntity.class);

    List<Task> groupTasks = taskService.createNativeTaskQuery().sql("select _TASK.*" +
        "  from " + taskTable + " _TASK" +
        "  join " + identityLinkTable + " _LINK on _TASK.ID_ = _LINK.TASK_ID_" +
        " where _LINK.TYPE_ = 'candidate'").list();

return groupTasks;

Answer 1

自动装配不适用于静态字段。删除static关键字并确保将接口的实现正确检测为Spring bean。