Spring中报错：required a single bean, but 2 were found:_required a single bean, but 2 were found:

本文链接：https://blog.youkuaiyun.com/chenhy3/article/details/86618281

本文详细介绍了在使用Spring框架时，如何解决@Autowired注解导致的注入冲突问题，通过@Qualifier注解成功定位并注入目标Bean，确保了应用程序的正常启动。

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@Service("ae01SchoolServiceImpl")
public class Ae01SchoolServiceImpl  implements IfAe01SchoolService {
}

public interface IfAe01SchoolService {
    Page<Ae01PO> 
}

public class Ae01SchoolController {

    @Autowired
    private IfAe01SchoolService schoolService;
}

执行后报错：

***************************
APPLICATION FAILED TO START
***************************
 
Description:
 
Field template in com.jzd1997.studyredis.TemplateController required a single bean, but 2 were found:
	- redisTemplate: defined by method 'redisTemplate' in class path resource [org/springframework/boot/autoconfigure/data/redis/RedisAutoConfiguration$RedisConfiguration.class]
	- stringRedisTemplate: defined by method 'stringRedisTemplate' in class path resource [org/springframework/boot/autoconfigure/data/redis/RedisAutoConfiguration$RedisConfiguration.class]
 
 
Action:
 
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

在使用Spring框架中@Autowired标签时默认情况下使用 @Autowired 注释进行自动注入时，Spring 容器中匹配的候选 Bean 数目必须有且仅有一个。当找不到一个匹配的 Bean 时，Spring 容器将抛BeanCreationException 异常，并指出必须至少拥有一个匹配的 Bean。

解决方案在错误提示里面也提到了，我采用@Qualifier解决。

@RestController
@RequestMapping("school")
public class Ae01SchoolController {

    @Autowired
    @Qualifier("ae01SchoolServiceImpl")
    private IfAe01SchoolService schoolService;
}

问题解决了，但是我想还会有其他方式的，待后续补充