memcached测试的行为不符合预期

debugcn 发表于 Dev

蓝天

我正在实现https://code.google.com/p/simple-spring-memcached/，当我在下面的代码下运行时，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>

我希望只收到一次输出“添加到缓存”，因为一旦将缓存添加到列表中就应该返回，并且不应该重新实例化列表？我的实现正确吗？

更新：

根据@raznor的建议，这里的行为似乎与预期的一样：

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;
    }

}

拉格诺

它不起作用，因为未拦截自调用。为了使其工作，请提取getComplexObjectFromDB方法以分离Spring Bean，并在您的测试中使用以下bean对其进行调用：myBean.getComplexObjectFromDB。

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