@Cacheable注解类内部调用失效问题
在使用Spring @Cacheable注解的时候,要注意,如果类A的方法f()被标注了@Cacheable注解,那么当类A的其他方法,例如:f2(),去直接调用f()的时候,@Cacheable是不起作用的,原因是@Cacheable是基于Spring AOP代理类,f2()属于内部方法,直接调用f()时,是不走代理的。举个例子:
@Cacheable(key = "#entityType", value = "entityCache")
public List<String> selectByEntityType(int entityType) {
List<String> result = new ArrayList<>();
// do something
return result;
}
public List<String> f2(){
// Cacheable失效,不会走缓存的
selectByEntityType(1);
}
解决方法就是不让这两个方法在同一个类中
@CacheEvict 清除多个key
借用@Caching实现
#入参是基本类型的:
@Caching(evict={@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.SINGLE_ROLE_NAME + "'+#roleId"),
@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.ROLES_NAME + "'+#roleId"),
@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.SINGLE_ROLE_NAME + "'+#roleId")})
public ResponseData remove(@RequestParam Long roleId) {
………………
}
#入参是对象的:
@Caching(evict={@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.SINGLE_ROLE_NAME + "'+#roleDto.roleId"),
@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.ROLES_NAME + "'+#roleDto.roleId"),
@CacheEvict(value = Cache.CONSTANT, key = "'" + CacheKey.SINGLE_ROLE_NAME + "'+#roleDto.roleId")})
public ResponseData edit(RoleDto roleDto) {
this.roleService.editRole(roleDto);
return SUCCESS_TIP;
}