先介绍缓存使用下场景
对同一请求（针对不同请求参数）进行缓存，可以减少服务器压力、加快响应速度
查询接口：根据请求条件对返回结果进行缓存
更新接口：根据条件对指定缓存进行清除
@Aspect(key = "query")
public Object query(String q) {
// do something
return null;
}@Aspect(key = "update")
public Object update(String q) {
// do something
return null;
}缓存query方法返回值
<bean class="com.aspect.config.CacheConfig">
<property name="key" value="query"/>
<property name="space" value="space2"/>
<property name="keyExpression">
<value>this[0]+new java.util.Date()</value>
</property>
<property name="timeout" value="60"/>
</bean>执行update时清除query的返回结果
<bean class="com.aspect.config.ClearConfig">
<property name="key" value="update"/>
<property name="cachedConfigs">
<list>
<value>query</value>
</list>
</property>
</bean>加入spring支持
<aop:config>
<aop:pointcut id="adviceAspectPoint" expression="execution(* com.sample..*.*(..)) and @annotation(Aspect)" />
<aop:aspect ref="adviceAspect">
<aop:around method="execute" pointcut-ref="adviceAspectPoint" arg-names="Aspect" />
</aop:aspect>
</aop:config>
<bean id="adviceAspect" class="com.aspect.AdviceAspect">
<property name="rootKey" value="aspect.cache."/>
<property name="cache" ref="cache"/>
<property name="caches">
<list>
<bean class="com.aspect.config.CacheConfig">
<property name="key" value="queryMethod1"/>
<property name="space" value="space1"/>
<property name="keyExpression">
<value>this[1]+"."+this[2]</value>
</property>
<property name="domainExpression">
<value>this[0]</value>
</property>
<property name="timeout" value="60"/>
</bean>
<bean class="com.aspect.config.CacheConfig">
<property name="key" value="queryMethod2"/>
<property name="space" value="space1"/>
<property name="keyExpression">
<value>this[0]</value>
</property>
<property name="timeout" value="60"/>
</bean>
<bean class="com.aspect.config.CacheConfig">
<property name="key" value="space2QueryMethod1"/>
<property name="space" value="space2"/>
<property name="keyExpression">
<value>this[0]+new java.util.Date()</value>
</property>
<property name="timeout" value="60"/>
</bean>
</list>
</property>
<property name="clears">
<list>
<bean class="com.aspect.config.ClearConfig">
<property name="key" value="updateMethod1"/>
<property name="domainExpression">
<value>this[0]</value>
</property>
<property name="cachedConfigs">
<list>
<value>queryMethod1</value>
<value>space2QueryMethod1</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
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