yo_nas yo_nas -4 years ago 260
Java Question

How autowired RedisTemplate<String,Long>

I want to use RedisTemplate on spring boot.
I can use StringRedeisTemplate successfully, but when i cant use RedisTemplate .
here is the code.

@Service
public class MyService {

@Autowired
private RedisTemplate<String, Long> template;

public void execute() {
template.opsForValue().set("hoge", 1l);
}
}


But, when start apps, get errors.

> Exception in thread "main"
> org.springframework.beans.factory.BeanCreationException: Error
> creating bean with name 'MyService': Injection of autowired
> dependencies failed; nested exception is
> org.springframework.beans.factory.BeanCreationException: Could not
> autowire field: private
> org.springframework.data.redis.core.RedisTemplate
> org.hoge.service.MyService.template; nested exception is
> org.springframework.beans.factory.NoSuchBeanDefinitionException: 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.java:334)
> at
> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
> 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:302)
> at
> org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
> at
> org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
> at
> org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
> at
> org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
> at
> org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
> at
> org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109)
> at
> org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
> at
> org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
> at
> org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
> at
> org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
> at
> jp.bizreach.davide.recommend.application.DavimendApplication.main(DavimendApplication.java:11)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:483) at
> com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
> Caused by: org.springframework.beans.factory.BeanCreationException:
> Could not autowire field: private
> org.springframework.data.redis.core.RedisTemplate
> org.hoge.service.MyService.template; nested exception is
> org.springframework.beans.factory.NoSuchBeanDefinitionException: 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:558)
> at
> org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
> at
> org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
> ... 21 more Caused by:
> org.springframework.beans.factory.NoSuchBeanDefinitionException: 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.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308)
> at
> org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
> at
> org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
> at
> org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:530)
> ... 23 more

Answer Source

The stacktrace suggest that you haven't defined the Bean which you will like to use for injecting in RedisTemplate.You can resolve it creating a configuration file, E.g.

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericToStringSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class AppConfig {
 @Bean
 JedisConnectionFactory jedisConnectionFactory() {
  return new JedisConnectionFactory();
 }

 @Bean
 RedisTemplate< String, Long > redisTemplate() {
  final RedisTemplate< String, Long > template =  new RedisTemplate< String, Long >();
  template.setConnectionFactory( jedisConnectionFactory() );
  template.setKeySerializer( new StringRedisSerializer() );
  template.setHashValueSerializer( new GenericToStringSerializer< Long >( Long.class ) );
  template.setValueSerializer( new GenericToStringSerializer< Long >( Long.class ) );
  return template;
 }
}

Once you have the configuration file then you need to pass it to SpringApplication.run E.g.

Object[] sources = {AppConfig.class};
ApplicationContext ctx = SpringApplication.run(sources, args);
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