SpringMVC4集成ehcache

前言

使用SpringMVC4集成ehcache来缓存服务器数据。

开发环境

SpringMVC4、ehcache2.6、

项目结构

SpringMVC 集成ehcache

1、pom.xml

//除了SpringMVC 、sql server相关就是ehcache-core
<dependency>
      <groupId>net.sf.ehcache</groupId>
      <artifactId>ehcache-core</artifactId>
      <version>2.6.11</version>
    </dependency>

2、springmvc-servlet.xml

主要就是开启cache注解，同时导入spring cache命名空间。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/cache
       http://www.springframework.org/schema/cache/spring-cache.xsd">

    <!--从配置文件加载数据库信息-->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations" value="classpath:config/jdbc.properties"/>
        <property name="fileEncoding" value="UTF-8"/>
    </bean>

    <!--配置数据源，这里使用Spring默认-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${sqlserver.driver}"/>
        <property name="url" value="${sqlserver.url}"/>
        <property name="username" value="${sqlserver.username}"/>
        <property name="password" value="${sqlserver.password}"/>
    </bean>

    <!--扫描Mapper-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.autohome.dao"/>
    </bean>

    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:springmvc-mybatis.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--启用缓存注解-->
    <cache:annotation-driven cache-manager="cacheManager"/>
    <bean id="cacheManagerFactory" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
        <property name="configLocation" value="classpath:ehcache.xml"/>
    </bean>
    <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
        <property name="cacheManager" ref="cacheManagerFactory"/>
    </bean>

    <!--启用最新的注解器、映射器-->
    <mvc:annotation-driven/>

    <!--使用默认的Servlet来响应静态资源-->
    <mvc:default-servlet-handler/>

    <!--扫描Controller注解类-->
    <context:component-scan base-package="com.autohome.controller" />
    <!--扫描Service注解类-->
    <context:component-scan base-package="com.autohome.service"/>

    <!--jsp视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

3、ehcache.xml

xsd我配置以后一直报红，不知道怎么回事，后来试着运行了下发现不影响程序运行，索性就这么用着

<?xml version="1.0" encoding="gbk"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd">

    <diskStore path="java.io.tmpdir" />

    　　<defaultCache
        maxElementsInMemory="10000"
        eternal="false"
        timeToIdleSeconds="120"
        timeToLiveSeconds="120"
        overflowToDisk="false"
    />

    <cache name="myCache"
           eternal="false"
           maxElementsInMemory="10000"
           overflowToDisk="false"
           timeToIdleSeconds="0"
           timeToLiveSeconds="0"
           memoryStoreEvictionPolicy="LFU"/>

</ehcache>

3、Service层里调用Dao层时使用缓存注解

在listAllUser方法上使用Cacheable注解，第一次运行时缓存里还没数据控制台会打印query from database...再次调用则直接读取缓存数据

@Cacheable(value = "myCache")
    public List<User> listAllUser() {
        System.out.println("query from database...");
        return userDao.listAllUser();
    }

　　

4、Controller里调用

@Controller
@RequestMapping("/User")
public class UserController {

    @Autowired
    UserService userService;

    @RequestMapping("/index")
    public ModelAndView index(){
        System.out.println("size:"+userService.listAllUser().size());

        ModelAndView mav =new ModelAndView("index");

        return mav;
    }
}