带有复杂键的Spring @Cacheable

Question

我在Spring（3.1）中使用以下@Cacheable：

Spring：

<?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:oauth="http://www.springframework.org/schema/security/oauth2"
    xmlns:sec="http://www.springframework.org/schema/security"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xmlns:mongo="http://www.springframework.org/schema/data/mongo"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/security/oauth2 
                            http://www.springframework.org/schema/security/spring-security-oauth2-1.0.xsd
                            http://www.springframework.org/schema/data/mongo
                            http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd
                            http://www.springframework.org/schema/cache 
                            http://www.springframework.org/schema/cache/spring-cache.xsd
                            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
                            http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd
                            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">

<cache:annotation-driven />
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager" p:cache-manager-ref="ehcache" />
<!-- Ehcache library setup -->
<bean id="ehcache"  class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
    p:config-location="classpath:ehcache.xml" />

Maven：

    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache-core</artifactId>
        <version>2.5.3</version>
    </dependency>

要缓存的方法：

@Cacheable(value="cahceName", key="concat(#param1).concat(‘-’).concat(#param2)")
    public String cachedMethod(String param1,String param2)

las，当我调试代码时，我看到即使param1和param2相同（即未使用cahce），也多次调用了该缓存方法。

有任何想法吗？

Answer 1

密钥显示不正确-

您可能是说- @Cacheable(value="cacheName", key="#param1.concat(‘-’).concat(#param2)")

此外，如果在没有调试信息的情况下完成编译，则param1，param2参数名称将对表达式求值器不可用。相反，您可以通过以下方式使用p0，p1等引用它们：

@Cacheable(value="cahceName", key="#p0.concat('-').concat(#p1)")

更新：

我在这里进行了一页测试，以演示其工作原理-https://gist.github.com/3315275