@Service
public class EmpService {@AutowiredEmployeeMapper employeeMapper;@Cacheable(cacheNames ="e")public Employee getEmp(Integer id){System.out.println("查询：" + id +"员工");Employee emp = employeeMapper.getEmpById(id);return emp;}    @CachePut(value = "e")public Employee update(Employee employee){System.out.println("update。。。。");employeeMapper.updateEmp(employee);return employee;}
}

@ResponseBody
@RequestMapping("/emps")
public Employee update(Employee employee){Employee emp = empService.update(employee);return  emp;
}

@CacheEvict(value = "emp",key = "#id")
public void del(Integer id){System.out.println("del："+ id);//employeeMapper.deleteEmpById(id);
}

@ResponseBody
@RequestMapping("/del")
public  String del(Integer id){empService.del(id);return  "success del ";
}

@CacheEvict(value = "e",allEntries = true)
public void del(Integer id){System.out.println("del："+ id);//employeeMapper.deleteEmpById(id);
}

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
public @interface Caching {Cacheable[] cacheable() default {};CachePut[] put() default {};CacheEvict[] evict() default {};
}

@Select("SELECT * FROM employee WHERE lastName = #{lastName}")
Employee getEmpByLastName(String lastName);

@Caching(cacheable = {@Cacheable(value = "emp",key = "#lastname")},put = {@CachePut(value = "emp",key = "#result.id"),@CachePut(value = "emp",key = "#result.email")}
)
//此时会将该数据的id、email、lastname数据都加载缓存中
public Employee getByName(String  lastname){return  employeeMapper.getEmpByLastName(lastname);
}

@ResponseBody
@RequestMapping("/caching/lastname/{lastname}")
public Employee Cachings(@PathVariable("lastname") String lastname){Employee emp = empService.getByName(lastname);return emp;
}

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface CacheConfig {String[] cacheNames() default {};String keyGenerator() default "";String cacheManager() default "";String cacheResolver() default "";
}