zhuangchong opened a new issue #3745:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/3745
**Describe the bug**
```
switch (EnumUtils.getEnum(TaskType.class,taskExecutionContext.getTaskType()))
```
When the task type does not exist in the enumeration class TaskType,
EnumUtils.getEnum() returns null, and switch will report a null pointer
exception
**Expected behavior**
Null processing of parameter values in switch
**Which version of Dolphin Scheduler:**
-[dev]
---
**描述错误**
```
switch (EnumUtils.getEnum(TaskType.class,taskExecutionContext.getTaskType()))
```
当任务类型在枚举类中TaskType不存在时，EnumUtils.getEnum()返回null,switch 会报空指针异常
**预期行为**
switch 内参数值判空处理
**哪个版本的Dolphin Scheduler：**
-[dev]
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