Spring Boot整合ehcache3.0 缓存

Spring Boot整合ehcache3.0以上缓存

1、题记

• 目前市面上大多数文章都是ehcache2.0的版本，由于ehcache3.0改动较大，原来的配置方式已经不使用了，故小小研究了一番，笔以记之。

2、 先配置Spring boot

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.mycompany</groupId>    <artifactId>ehcache3-jsr107-spring-boot</artifactId>    <version>1.0-SNAPSHOT</version>    <packaging>jar</packaging>    <name>ehcache3-jsr107-spring-boot</name>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId> <!--parent project to use spring boot -->        <version>1.5.8.RELEASE</version>    </parent>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <maven.compiler.source>1.8</maven.compiler.source>        <maven.compiler.target>1.8</maven.compiler.target>    </properties>    <dependencies>        <dependency>          <groupId>org.springframework.boot</groupId>          <artifactId>spring-boot-starter-cache</artifactId> <!--Starter for using Spring Framework's caching support-->        </dependency>        <dependency>          <groupId>org.springframework.boot</groupId>          <artifactId>spring-boot-starter-web</artifactId> <!-- starter for using Spring MVC -->        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>                <configuration>                    <jvmArguments>-Xmx64m -XX:MaxDirectMemorySize=512m</jvmArguments>                </configuration>            </plugin>        </plugins>    </build></project>

添加我们今天的主角：

<dependency>          <groupId>javax.cache</groupId> <!-- JSR-107 API-->          <artifactId>cache-api</artifactId>        </dependency>        <dependency>          <groupId>org.ehcache</groupId>          <artifactId>ehcache</artifactId>          <version>3.4.0</version>        </dependency>

cache-api也必须要引入，因为目前ehcache遵循jsr-107规范，所以必须引入

包就引入完毕了，看配置文件

3、ehcache配置文件

<config    xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'    xmlns='http://www.ehcache.org/v3'    xmlns:jsr107='http://www.ehcache.org/v3/jsr107'>  <service>    <jsr107:defaults>      <jsr107:cache name="people" template="heap-cache"/>    </jsr107:defaults>  </service>  <cache-template name="heap-cache">    <listeners>        <listener>          <class>org.vrzart.com.ehcache.EventLogger</class>          <event-firing-mode>ASYNCHRONOUS</event-firing-mode>          <event-ordering-mode>UNORDERED</event-ordering-mode>          <events-to-fire-on>CREATED</events-to-fire-on>          <events-to-fire-on>UPDATED</events-to-fire-on>          <events-to-fire-on>EXPIRED</events-to-fire-on>          <events-to-fire-on>REMOVED</events-to-fire-on>          <events-to-fire-on>EVICTED</events-to-fire-on>        </listener>    </listeners>    <resources>      <heap unit="entries">2000</heap>      <offheap unit="MB">100</offheap> <!-- unit of measure is case sensitive! -->    </resources>  </cache-template>  <cache alias="peopleCache" uses-template="heap-cache">    <expiry>      <ttl unit="seconds">600</ttl>    </expiry>  </cache></config>

配置spring 配置文件 application.properties

spring.cache.jcache.config=classpath:ehcache.xml  ###attention，这里是jcacheserver.port=8090

4、使用代码

@Component@CacheDefaults(cacheName = "peopleCache")public class PersonService{    private static final Logger LOGGER = LoggerFactory.getLogger(PersonService.class);    @CacheResult    public Person getPerson(int ssn)    {        LOGGER.info("ssn " + ssn + " not found in cache. TimeStamp: {}", new Date());        switch (ssn)        {            case 123456789:                return new Person(ssn, "Geoff", "Gibson");            case 987654321:                return new Person(ssn, "Cory", "Beck");            default:                return new Person(ssn,"John","Doe");        }    }}

使用的jsr-107标准注解，没有使用Spring的一些注解（如cachable等）

5、测试

启动SpringJsr107Ehcache3Application类，浏览器输入[这个地址

]( http://localhost:8090/person/987654321)

多刷新自己就会发现从缓存中拿数据了

6、 代码下载

这里，大家可以自己下载下来跑一下，体验一下