SpringBoot报错 The bean ‘xxxImpl‘ could not be injected as a ‘com.xxx.service.impl.xxxServiceImpl‘
SpringBoot报错 The bean ‘xxxImpl’ could not be injected as a ‘com.xxx.service.impl.xxxServiceImpl’ because it is a JDK dynamic proxy that implements: com.xxx.service.xxxService问题描述项目在注入Service时报出动态代理错误问
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SpringBoot报错 The bean ‘xxxImpl’ could not be injected as a ‘com.xxx.service.impl.xxxServiceImpl’ because it is a JDK dynamic proxy that implements: com.xxx.service.xxxService
问题描述
项目在注入Service时报出动态代理错误问题,如果在自动装配的时候直接以实现类来声明变量,会出现CGLib错误。
例如,在UserController
类里自动装配了UserServiceImpl
类型的变量:
@Autowired
UserServiceImpl userService;
@RequestMapping("/xxx")
public Result xxx() {
// 调用方法
userService.fun();
}
那么运行的时候就会报错:
***************************
APPLICATION FAILED TO START
***************************
Description:
The bean 'userServiceImpl' could not be injected as a 'com.xxx.service.impl.UserServiceImpl' because it is a JDK dynamic proxy that implements:
com.xxx.service.UserService
Action:
Consider injecting the bean as one of its interfaces or forcing the use of CGLib-based proxies by setting proxyTargetClass=true on @EnableAsync and/or @EnableCaching.
解决方法
一般注入的时候都是使用接口进行装配。如果需要在Service里扩展方法,可以现在接口里声明抽象类,实现类在实现方法即可。
接口声明抽象方法:
public interface UserService extends IService<User> {
User getUserByName(String username);
}
实现类覆写方法:
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
@Override
public User getUserByName(String username) {
return getOne(new QueryWrapper<User>().eq("username", username));
}
}
自动装配:
@Autowired
UserService userService;
使用以接口类型声明的变量,再次调用就没问题啦!
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