java - memcached 测试未按预期运行

Question

我正在实现 https://code.google.com/p/simple-spring-memcached/当我运行下面的代码时，我收到以下输出:

Adding to cache
Adding to cache

测试 memcached 的代码:

import java.util.ArrayList;
import java.util.List;

import junit.framework.Assert;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.google.code.ssm.CacheFactory;
import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:memcached-context.xml" })
public class MemcachedTest {

    @Test
    public void testMemcached() {
        Assert.assertTrue(getComplexObjectFromDB("test").size() == 1);
        Assert.assertTrue(getComplexObjectFromDB("test").size() == 1);
    }

    private List<String> getSA(){

        List<String> l = new ArrayList<String>();
        System.out.println("Adding to cache");
        l.add("test");

        return l;
    }

    @ReadThroughSingleCache(namespace = "CplxObj", expiration = 3600)
    public List<String> getComplexObjectFromDB(@ParameterValueKeyProvider String id) {

        return getSA();
    }

    @Autowired
    private CacheFactory defaultMemcachedClient;

}

memcached-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:oxm="http://www.springframework.org/schema/oxm"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
    xsi:schemaLocation="
   http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
   http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd
   http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <mvc:annotation-driven />

    <context:annotation-config />

<import resource="simplesm-context.xml" />
  <aop:aspectj-autoproxy />

    <bean name="defaultMemcachedClient" class="com.google.code.ssm.CacheFactory">
          <property name="cacheClientFactory">
                <bean class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl" />
          </property>
          <property name="addressProvider">
                <bean class="com.google.code.ssm.config.DefaultAddressProvider">
                     <property name="address" value="xx.xx.xx.xx:11211" />
                </bean>
          </property>
          <property name="configuration">
                <bean class="com.google.code.ssm.providers.CacheConfiguration">
                      <property name="consistentHashing" value="true" />
                </bean>
          </property>
     </bean>

</beans>

我希望只接收一次输出“添加到缓存”，因为一旦将缓存添加到列表中就应该返回并且列表不应该被重新实例化？我的实现正确吗？

更新:

根据@raznor的建议，这似乎表现符合预期:

memcached-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:oxm="http://www.springframework.org/schema/oxm"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
    xsi:schemaLocation="
   http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
   http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd
   http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <mvc:annotation-driven />

    <context:annotation-config />

<import resource="simplesm-context.xml" />
  <aop:aspectj-autoproxy />

    <bean name="memcachedClient" class="com.memcached.MemcachedClient">
     </bean>

    <bean name="defaultMemcachedClient" class="com.google.code.ssm.CacheFactory">
          <property name="cacheClientFactory">
                <bean class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl" />
          </property>
          <property name="addressProvider">
                <bean class="com.google.code.ssm.config.DefaultAddressProvider">
                     <property name="address" value="1.1.1.1:11211" />
                </bean>
          </property>
          <property name="configuration">
                <bean class="com.google.code.ssm.providers.CacheConfiguration">
                      <property name="consistentHashing" value="true" />
                </bean>
          </property>
     </bean>

</beans>

MemcachedTest.java:

import java.util.ArrayList;
import java.util.List;

import junit.framework.Assert;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.google.code.ssm.CacheFactory;
import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:memcached-context.xml" })
public class MemcachedTest {

    @Test
    public void testMemcached() {

        Assert.assertTrue(mClient.getComplexObjectFromDB("test1").size() == 1);
        Assert.assertTrue(mClient.getComplexObjectFromDB("test1").size() == 1);
    }

    @Autowired
    private MemcachedClient mClient;

}

MemcachedClient.java:

package com.memcached;

import java.util.ArrayList;
import java.util.List;

import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

public class MemcachedClient {

    @ReadThroughSingleCache(namespace = "CplxObj", expiration = 3600)
    public List<String> getComplexObjectFromDB(
            @ParameterValueKeyProvider String id) {

        return getSA();
    }

    private List<String> getSA() {

        List<String> l = new ArrayList<String>();
        System.out.println("Adding to cache");
        l.add("test");

        return l;
    }

}

Answer 1

它不起作用，因为 self 调用未被拦截。为了使其工作，将 getComplexObjectFromDB 方法提取到单独的 Spring bean 中，并使用此 bean 在测试中调用它:myBean.getComplexObjectFromDB。