Please answer some questions before submitting your issue. Thanks!

### Which version of XXL-JOB do you using?
2.4.x
### Expected behavior
【求助】不同域名，iframe内嵌xxl-job,无法登录吗？ 
### Actual behavior
# 跨域？
### Steps to reproduce the behavior

### Other information

@xuxueli @cszxyang 
【求助】不同域名，iframe内嵌xxl-job,无法登录吗？ 
This is a GitHub Issue
repo:xxl-job
owner:xuxueli
Title : 【求助】不同域名，iframe内嵌xxl-job,无法登录吗？ 
Issue date:

--- start body ---
Please answer some questions before submitting your issue. Thanks!

### Which version of XXL-JOB do you using?
2.4.x
### Expected behavior
【求助】不同域名，iframe内嵌xxl-job,无法登录吗？ 
### Actual behavior
# 跨域？
### Steps to reproduce the behavior

### Other information

@xuxueli @cszxyang 
--- end body ---
