SpringBootJPA + EhCache

package com.example.jpahibernate.service.impl; import com.example.jpahibernate.dao.DemoDao; import com.example.jpahibernate.entity.Demo; import com.example.jpahibernate.service.DemoService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cache.annotation.CacheEvict; import org.springframework.cache.annotation.CachePut; import org.springframework.cache.annotation.Cacheable; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.List; import java.util.Optional; /** * 缓存注解简析： * @CacheConfig 用于类级别，配置缓存共用属性，比如cacheNames * @Cacheable 加入缓存 * @CachePut 更新缓存 * @CacheEvict 删除缓存 */ //@CacheConfig(cacheNames = "demo") 有这一句，下方的缓存注解就不用在声明cacheNames了 @Service public class DemoServiceImpl implements DemoService { @Autowired private DemoDao demoDao; // @Cacheable(cacheNames = "demo") // key为空时，表示使用【方法的参数类型及参数值】作为key @Cacheable(cacheNames = "demo", key = "#id") @Override public Demo getById(String id) { Optional<Demo> op = demoDao.findById(id); return op.get(); } /** * 这里的key，取值是'alldemo'，如果直接写alldemo是会报错的， 需要加上\"\"或者'' * @return */ @Cacheable(cacheNames = "demo", key = "'alldemo'") @Override public List<Demo> findAll() { return demoDao.findAll(); } /** * 更新时，更新该数据id的缓存，同时删除全数据的缓存，下次获取全数据会从数据库拿最新的 */ @CachePut(cacheNames = "demo", key = "#demo.id") @CacheEvict(cacheNames = "demo", key = "'alldemo'") @Override public Demo update(Demo demo) { demoDao.saveAndFlush(demo); return demo; } /** * Executing an update/delete query * JPS要求，’没有事务支持，不能执行更新和删除操作’。，所以自定义更新sql需要加注解 */ // @CacheEvict(cacheNames = "demo") // key为空时，表示使用【方法的参数类型及参数值】作为key @CacheEvict(cacheNames = "demo", key = "#id") @Transactional @Override public void delete(String id) { //逻辑删除而已 demoDao.deleteByIdStr(id); } @CacheEvict(cacheNames = "demo", key = "'alldemo'") @CachePut(cacheNames = "demo", key = "#demo.id") @Override public void save(Demo demo) { demoDao.save(demo); } @CacheEvict(cacheNames = "demo", key = "'alldemo'") @Override public List<Demo> batchSave(List<Demo> list) { List<Demo> result = demoDao.saveAll(list); return result; } //==========================keyGenerator START================================ @Cacheable(cacheNames = "demo", keyGenerator = "myGenerater") @Override public Demo getByIdForG(String id) { Optional<Demo> op = demoDao.findById(id); return op.get(); } @CacheEvict(cacheNames = "demo", keyGenerator = "myGenerater") @Transactional @Override public void deleteForG(String id) { demoDao.deleteByIdStr(id); } //==========================keyGenerator END================================ }