如何通过Spring注入com.github.benmanes.caffeine.cache.cache

Question

这就是我的缓存的实例化方式：

return Caffeine.newBuilder()
.maximumSize(10)
.expireAfterWrite(15, TimeUnit.MINUTES)
.build()

如何配置Spring以执行依赖项注入？

<bean id="matchedDFUCache" class="com.github.benmanes.caffeine.cache.Caffeine" factory-method="newBuilder"></bean>

给我这个错误：

[coral:launch] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'realTimeForecastFactory': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'matchedDFUCache' is expected to be of type 'com.github.benmanes.caffeine.cache.Cache' but was actually of type 'com.github.benmanes.caffeine.cache.Caffeine'

这是源文件：https://github.com/ben-manes/caffeine/blob/master/caffeine/src/main/java/com/github/benmanes/caffeine/cache/Caffeine.java

Answer 1

<bean id="caffeineBuilder" class="com.github.benmanes.caffeine.cache.Caffeine" factory-method="newBuilder">
</bean>
<bean id="matchedDFUCache" factory-bean="caffeineBuilder" factory-method="build">
</bean>