Springboot Cache @Cacheable 类内部调用时不生效，解决办法

Springboot Cache @Cacheable 类内部调用时不生效，解决办法| Id | Title | DateAdded | SourceUrl | PostType | Body | BlogId | Description | DateUpdated | IsMarkdown | EntryName | CreatedTime | IsActive | AutoDesc | AccessPermission |

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| 17805125| Springboot Cache @Cacheable 类内部调用时不生效，解决办法| 2023-11-02T12:17:00| | BlogPost|

出现问题的原因：Spring cache的实现原理是基于AOP的动态代理实现的：即都在方法调用前后去获取方法的名称、参数、返回值，然后根据方法名称、参数生成缓存的key(自定义的key例外)，进行缓存。this调用不是代理对象的调用, 所以aop失效,注解失效。

解决办法就是，我们获取当前Bean,由它来调用。

SpringContextUtil

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
/**

不依赖于Autowired而使用java代码快速获取到spring管理的bean

/

@Component

@Lazy(false)

public class SpringContextUtil  implements ApplicationContextAware {

private static ApplicationContext applicationContext;

public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

SpringContextUtil .applicationContext = applicationContext;

}

public static ApplicationContext getApplicationContext() {

return applicationContext;

}

public static Object getBean(String name) {

return getApplicationContext().getBean(name);

}

public static <T> T getBean(Class<T> clazz) {

return getApplicationContext().getBean(clazz);

}

public static <T> T getBean(String name, Class<T> clazz) {

return getApplicationContext().getBean(name, clazz);

}

}

 

Service 调用

package com.mark.pay.service;
import com.mark.pay.bean.User;

import com.mark.pay.common.spring.SpringContextUtil;

import com.mark.pay.dao.UserMapper;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.cache.annotation.*;

import org.springframework.stereotype.Service;
@Service

@CacheConfig(cacheNames = "user",cacheManager = "cacheManager")

public class TestService {
@Autowired
UserMapper userMapper;

@Cacheable( key </span>="#id"<span style="color: #000000;">)
</span><span style="color: #0000ff;">public</span><span style="color: #000000;"> User query(Integer id) {
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> userMapper.selectByPrimaryKey(id);
}


</span><span style="color: #0000ff;">public</span><span style="color: #000000;"> User testCacheQuery(Integer id){
    TestService service </span>= SpringContextUtil.getBean(TestService.<span style="color: #0000ff;">class</span><span style="color: #000000;">);
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> service.query(id);
}

}

 

| 648658| | 2023-11-02T12:17:00| false| | 2023-11-02T12:16:38.94| true| 出现问题的原因：Spring cache的实现原理是基于AOP的动态代理实现的：即都在方法调用前后去获取方法的名称、参数、返回值，然后根据方法名称、参数生成缓存的key(自定义的key例外)，进行缓存。this调用不是代理对象的调用, 所以aop失效,注解失效。 解决办法就是，我们获取当前Bean,| Anonymous|