MAVEN
        <!-- memcached引用包 -->
        <!-- https://mvnrepository.com/artifact/com.googlecode.xmemcached/xmemcached -->
		<dependency>
	    	<groupId>com.google.code.simple-spring-memcached</groupId>
		    <artifactId>spring-cache</artifactId>
		    <version>3.1.0</version>
		</dependency>
        <dependency>  
            <groupId>com.google.code.simple-spring-memcached</groupId>  
            <artifactId>xmemcached-provider</artifactId>  
            <version>3.1.0</version>  
        </dependency>  
       <!-- memcached引用包  end-->
application.xml
    <cache:annotation-driven />
     <bean name="cacheManager" class="com.google.code.ssm.spring.SSMCacheManager">  
        <property name="caches">  
            <set>  
                <bean class="com.google.code.ssm.spring.SSMCache">  
                    <constructor-arg name="cache" index="0" ref="defaultCache"/>  
                    <!-- 5 minutes -->  
                    <constructor-arg name="expiration" index="1" value="300"/>  
                    <!-- @CacheEvict(..., "allEntries" = true) doesn't work -->  
                    <constructor-arg name="allowClear" index="2" value="false"/>  
                </bean>  
            </set>  
        </property>  
  
    </bean>  
    
     <bean name="defaultCache" class="com.google.code.ssm.CacheFactory">  
        <property name="cacheName" value="defaultCache"/>  
        <property name="cacheClientFactory">  
            <bean name="cacheClientFactory" class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl"/>  
        </property>  
        <property name="addressProvider">  
            <bean class="com.google.code.ssm.config.DefaultAddressProvider">  
                <property name="address" value="127.0.0.1:11211"/>  
            </bean>  
        </property>  
        <property name="configuration">  
            <bean class="com.google.code.ssm.providers.CacheConfiguration">  
                <property name="consistentHashing" value="true"/>  
            </bean>  
        </property>  
    </bean>

@Cacheable(value = "defaultCache", key = "'getById'")
   public User selectByPrimaryKey(long id) {
	System.out.println("show_test");
	User user = userDAO.selectByPrimaryKey(id);
	return user;
}