Bean named ‘xxxxxx‘ is expected to be of type ‘x‘ but was actually of type ‘com.sun.proxy.$Proxy112‘

Bean named 'instanceService' is expected to be of type 'awb.operations.service.instance.InstanceService' but was actually of type 'com.sun.proxy.$Proxy112'
类似Bean named 'xxxxxxx' is expected to be of type 'x' but was actually of type 'com.xx'这种异常，说明类型不对。
我仔细对比发现原来是我编写注入的是实现类，并不是接口导致的：
注入实现类

// 注入实现类错误！
@Autowired
private ServiceImpl serviceImpl; 

// 应该注入接口类
@Autowired
private ServiceInterface serviceInterface;

解决方案：注入接口类。
分析：造成这个原因是粗心copy到了实现类，所以无法注入，应注入接口类。