springboot 缓存ehcache的简单使用

 <!-- ehcache 缓存 -->
        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
        </dependency>

 <!--开启缓存支持-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>

<?xml version="1.0" encoding="UTF-8"?>
<ehcache>
    <!--ehcache 缓存-->
    <cache name="department" maxElementsInMemory="1000" />
</ehcache>

<ehcache>
    <!--ehcache 缓存-->
    <cache name="department"
           maxElementsInMemory="100000"
           eternal="true"
           overflowToDisk="true"
           maxElementsOnDisk="10000000"
           diskPersistent="true"
           memoryStoreEvictionPolicy="LRU"/>

    <defaultCache
            eternal="false"
            maxElementsInMemory="10000"
            overflowToDisk="false"
            diskPersistent="false"
            timeToIdleSeconds="0"
            timeToLiveSeconds="600"
            memoryStoreEvictionPolicy="LRU"/>

</ehcache>

@EnableCaching // 开启缓存使用
@SpringBootApplication
public class Application { // extends SpringBootServletInitializer

    public static void main(String[] args) {
        SpringApplication application = new SpringApplication(Application.class, "classpath*:/spring/security-*.xml");
        application.setWebEnvironment(true);
        application.run(args);
    }

    /**
     *  HOW TO MAKE A SPRING BOOT JAR INTO A WAR TO DEPLOY ON TOMCAT
     */
//	@Override
//	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
//		// Customize the application or call application.sources(...) to add sources
//
//		application.sources(Application.class);
//		return application;
//	}

}

    @Override
    @Cacheable(value = "department")
    public List<Department> getDepartmentList() {
        System.out.println("--------------------------------缓存查询：查查查-树树树\n");
        List<Department> departmentList = departmentRepository.findAll(new Sort(Sort.Direction.ASC, "id"));
        return (List<Department>) buildDepartmentTree(departmentList, null);
    }

  @Override
    @Cacheable(value = "department", key = "#departmentId")
    public Object findOne(String departmentId) {
        return departmentRepository.findOne(departmentId);
    }

 allEntries = true ，默认为false 

  @Override
    @Transactional(readOnly = false)
    @CacheEvict(value = "department", allEntries = true) // 新增、删除、修改 all is it.
    public Object updateDepartmentById(String id, Department departmentDto) {
        Department department = departmentRepository.findOne(id);
        if (department == null) {
            return "不存在该部门";
        }
        BeanHelper.mapPartOverrider(department, departmentDto);
        departmentRepository.save(department);
        return department;
    }

// 查：存key为cache_department 的数据缓存到departmentList中,如果没有指定key则方法参数作为key保存到缓存中。department只是缓存的名字。
//不指定 key 会默认使用参数名或者方法名，作为缓存的key。