结论：标注@Configuration(proxyBeanMethods = false)注解的配置类，类中被@Bean标注的方法将不会被spring通过CGLB代理，但是spring容器中还是有这个bean的，在spring容器中获取的bean（getBean（）、@Autowired等方式获取）还是单例的，但是你通过直接调用方法，获取到的就会是一个新的bean

（1）先看 proxyBeanMethods = true （默认是true）的情况

java">@Configuration(proxyBeanMethods = true)
public class RedisConfig {@Bean("redisTemplate")public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {RedisTemplate<Object, Object> template = new RedisTemplate<>();template.setConnectionFactory(redisConnectionFactory);// key 的 String 序列化采用 StringRedisSerializerStringRedisSerializer stringRedisSerializer = new StringRedisSerializer();template.setKeySerializer(stringRedisSerializer);template.setHashKeySerializer(stringRedisSerializer);// 使用 FastJsonRedisSerializer 来序列化和反序列化redis 的 value的值FastJsonRedisSerializer<Object> serializer = new FastJsonRedisSerializer<>(Object.class);FastJsonConfig fastJsonConfig = new FastJsonConfig();fastJsonConfig.setCharset(StandardCharsets.UTF_8);serializer.setFastJsonConfig(fastJsonConfig);template.setValueSerializer(serializer);template.setHashValueSerializer(serializer);template.afterPropertiesSet();return template;}
}

java"> @Autowiredprivate RedisTemplate<Object, Object> redisTemplate;@Autowiredprivate ApplicationContext applicationContext;@AutowiredRedisConnectionFactory redisConnectionFactory;@GetMapping("/sec")public void secKill() {System.out.println("spring容器中获取=====>" + redisTemplate);RedisConfig bean = applicationContext.getBean(RedisConfig.class);System.out.println( "spring容器中获取=====>" + bean);RedisTemplate<Object, Object> objectObjectRedisTemplate = bean.redisTemplate(redisConnectionFactory);System.out.println( "调用方法获取=====>" + objectObjectRedisTemplate);}

结果：

java">spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig$$SpringCGLIB$$0@3410f434
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0
spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig$$SpringCGLIB$$0@3410f434
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0
spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig$$SpringCGLIB$$0@3410f434
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@1306c4b0

（2）将proxyBeanMethods = true 由 true 改成false

结果：

java">spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@2bc37a0a
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig@b18f3e8
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@7eb173e6
spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@2bc37a0a
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig@b18f3e8
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@4fbb2cfd
spring容器中获取=====>org.springframework.data.redis.core.RedisTemplate@2bc37a0a
spring容器中获取=====>com.example.simplejobdemo.config.RedisConfig@b18f3e8
调用方法获取=====>org.springframework.data.redis.core.RedisTemplate@68627132

可以看出从Spring容器中获取的依旧是单例Bean，而通过方法获取的是多实例的