BeanNotOfRequiredTypeException due to autowired fields

use interface AdminService rather than the implements.

this error caused by Annotation @Transactional, Spring makes a proxy for AdminService at Runtime.

Somewhere in your code you must be autowiring AdminServiceImpl like this:

@Autowired
private AdminServiceImpl adminService;

Either depend barely on interface:

@Autowired
private AdminService adminService;

or enabled CGLIB proxies.

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