java - 带有自定义实体的SpringBoot注入 RedisTemplate

在SpringBoot proejct中,用以下内容放到RedisTemplate中时,可以工作。


@Repository
public class CommonDBDaoImpl implements CommonDBDao {
 @Autowired
 RedisTemplate<String, Object> redisTemplate;

 ....
}

但是,当我将RedisTemplate与自定义Entity/DTO一起使用时,注入失败。


@Repository
public class CommonDBDaoImpl implements CommonDBDao {
 @Autowired
 RedisTemplate<String, PersonDTO> redisTemplate;

 ....
}

public PersonDTO implements Serializable {
 //field
 //getter and setter
}

日志:


Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'commonDBDaoImpl': Injection of autowired dependenci
es failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.red
is.core.RedisTemplate com.java.my.dao.CommonDBDaoImpl.redisTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDe
finitionException: No qualifying bean of type [org.springframework.data.redis.core.RedisTemplate] found for dependency: expected at least 1 bean which
 qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.j
ava:334)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
 at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
 at org.springframework.boot.test.SpringApplicationContextLoader.loadContext(SpringApplicationContextLoader.java:101)
 at org.springframework.test.context.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:68)
 at org.springframework.test.context.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:86)
 ... 25 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.redis.core.RedisTemplat
e com.java.my.dao.CommonDBDaoImpl.redisTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: N
o qualifying bean of type [org.springframework.data.redis.core.RedisTemplate] found for dependency: expected at least 1 bean which qualifies as autowi
re candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcesso
r.java:561)
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.j
ava:331)
 ... 40 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.redis.core.RedisTempl
ate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springfra
mework.beans.factory.annotation.Autowired(required=true)}
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcesso
r.java:533)
 ... 42 more

如何在RedisTemplate中使用自定义Entity/DTO

时间:

RedisTemplate<String, PersonDTO> redisTemplateRedisTemplate<String, Object> redisTemplate不同的签名,spring会找不到bean,你必须手动定义一个新的bean 。

你可以这样做:


 @Bean
 public RedisTemplate<String, PersonDTO> redisTemplatePersonDTO() {
 return new RedisTemplate<String, PersonDTO>() { 
 /* the declaration of the object here */ 
 };
 }

将此代码放入ApplicationConfig类中并确保用@EnableAutoConfiguration和@Configuration

...