1，SpringBoot版本

2.0.3.RELEASE

①，pom.xml

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.3.RELEASE</version><relativePath /> <!-- lookup parent from repository --></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-cache</artifactId></dependency><dependency><groupId>net.sf.ehcache</groupId><artifactId>ehcache</artifactId></dependency></dependencies>

②，application.properties

spring.cache.ehcache.config=classpath:/ehcache.xml

③，启用缓存注解

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;@SpringBootApplication
//启用缓存注解
@EnableCaching
public class SpringbootEhcacheApplication {public static void main(String[] args) {SpringApplication.run(SpringbootEhcacheApplication.class, args);}
}

④，springboot为我们注入的缓存先关类

@Configuration
@ConditionalOnClass({ Cache.class, EhCacheCacheManager.class })
@ConditionalOnMissingBean(org.springframework.cache.CacheManager.class)
@Conditional({ CacheCondition.class,EhCacheCacheConfiguration.ConfigAvailableCondition.class })
class EhCacheCacheConfiguration {private final CacheProperties cacheProperties;private final CacheManagerCustomizers customizers;EhCacheCacheConfiguration(CacheProperties cacheProperties,CacheManagerCustomizers customizers) {this.cacheProperties = cacheProperties;this.customizers = customizers;}
//缓存管理器@Beanpublic EhCacheCacheManager cacheManager(CacheManager ehCacheCacheManager) {return this.customizers.customize(new EhCacheCacheManager(ehCacheCacheManager));}@Bean@ConditionalOnMissingBeanpublic CacheManager ehCacheCacheManager() {Resource location = this.cacheProperties.resolveConfigLocation(this.cacheProperties.getEhcache().getConfig());if (location != null) {return EhCacheManagerUtils.buildCacheManager(location);}return EhCacheManagerUtils.buildCacheManager();}static class ConfigAvailableCondition extends ResourceCondition {ConfigAvailableCondition() {super("EhCache", "spring.cache.ehcache.config", "classpath:/ehcache.xml");}}}

⑤，类路径下的ehcache.xml

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"><!--将缓存保存到硬盘的那个位置 --><diskStore path="d:/ehcache/"></diskStore><!-- <diskStore path="java.io.tmpdir"></diskStore>java.io.tmpdir取值：操作系统不同 这个系统属性所表示的目录也不同On Windows: java.io.tmpdir:[C:\Users\liyhu\AppData\Local\Temp\]On Solaris: java.io.tmpdir:[/var/tmp/]On Linux: java.io.tmpdir: [/tmp]On Mac OS X: java.io.tmpdir: [/tmp]--><!--指定缓存名 --><cache name="home"eternal="false"maxEntriesLocalHeap="0"timeToIdleSeconds="200"diskPersistent="true"/><!-- eternal：true表示对象永不过期，此时会忽略timeToIdleSeconds和timeToLiveSeconds属性，默认为false --><!-- maxEntriesLocalHeap：堆内存中最大缓存对象数，0没有限制 --><!-- timeToIdleSeconds： 设定允许对象处于空闲状态的最长时间，以秒为单位。当对象自从最近一次被访问后，如果处于空闲状态的时间超过了timeToIdleSeconds属性值，这个对象就会过期，EHCache将把它从缓存中清空。只有当eternal属性为false，该属性才有效。如果该属性值为0，则表示对象可以无限期地处于空闲状态 --><!-- diskPersistent：是否在磁盘上持久化。指重启jvm后，数据是否有效。默认为false。 --><!-- memoryStoreEvictionPolicy：如果内存中数据超过内存限制，向磁盘缓存时的策略。默认值LRU，可选FIFO、LFU。--></ehcache>

2，使用缓存

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.Cache.ValueWrapper;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.ehcache.EhCacheCacheManager;
import org.springframework.stereotype.Service;import com.example.demo.bean.Person;@Service
@CacheConfig(cacheNames = "home")
public class HomeService {
//注入缓存管理器@AutowiredEhCacheCacheManager cacheManager;
//使用注解缓存，key默认为入参@Cacheable()public String find(Person person) {person.getAge();System.out.println("service 进来了。。。");return "service find====";}//手动使用缓存public String get(Integer age) {
//查找指定缓存homeorg.springframework.cache.Cache cache = cacheManager.getCache("home");
//根据key查找是否有缓存该值ValueWrapper val = cache.get(age);if(val!=null) {System.out.println("有缓存。。。");return val.get().toString();}else {System.out.println("没有缓存。。。");cache.put(age, age);return age.toString();}}