Question

我正忙着关注Heroku的Java Memcached教程：https://devcenter.heroku.com/articles/memcache#using-spymemcached-with-spring

我已经通过自制程序安装了Memcached，启动并运行，添加了Spymemcached依赖项并将XML配置添加到我的应用程序上下文中。

问题是我没有得到关于MEMCACHE_USERNAME和MEMCACHE_PASSWORD环境变量需要什么的最微弱的线索，因为当我的应用程序上下文在本地启动时我得到以下身份验证失败：

2013-04-21 18:22:52.108 INFO net.spy.memcached.MemcachedConnection:  Added {QA sa=localhost/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue
2013-04-21 18:22:52.127 INFO net.spy.memcached.MemcachedConnection:  Connection state changed for sun.nio.ch.SelectionKeyImpl@228ef305
2013-04-21 18:22:52.283 WARN net.spy.memcached.auth.AuthThread:  Authentication failed to localhost/127.0.0.1:11211
2013-04-21 18:22:52.398 WARN net.spy.memcached.auth.AuthThread:  Authentication failed to localhost/127.0.0.1:11211
2013-04-21 18:22:52.520 WARN net.spy.memcached.auth.AuthThread:  Authentication failed to localhost/127.0.0.1:11211 ...

提供用户名和密码的配置：

<bean id="plainCallbackHandler" class="net.spy.memcached.auth.PlainCallbackHandler">
   <constructor-arg index="0" value="${MEMCACHE_USERNAME}"/>
   <constructor-arg index="1" value="${MEMCACHE_PASSWORD}"/>
</bean>

我必须错过一些相当明显的东西......任何指针？

Answer 1

如果您在本地运行该应用，则MEMCACHE_USERNAME和MEMCACHE_PASSWORD都应为空（除非您在安装期间设置它们）。如果您的配置不处理空值，则可以使用前缀MEMCACHE_USERNAME= MEMCACHE_PASSWORD= the-command-to-run-your-app运行您的应用程序。

如果您使用Memcache插件在Heroku上运行，您将获得MEMCACHE_USERNAME，MEMCACHE_PASSWORD和MEMCACHE_SERVERS等环境变量，这些变量在您安装添加时自动设置上。

如果您自行托管Memcached服务器，则必须（或）设置您将在应用程序中配置的SASL用户名和密码。

Answer 2

HI，我也遇到了类似的问题，因为我没有设置SASL用户名和密码，所以当我删除配置时，错误消息就消失了。

<bean name="defaultCache" class="com.google.code.ssm.CacheFactory">
    <property name="cacheName" value="default" />
    <property name="cacheClientFactory">
        <bean name="cacheClientFactory"
            class="com.google.code.ssm.providers.spymemcached.MemcacheClientFactoryImpl" />
    </property>
    <property name="addressProvider" ref="addressProvider" />
    <property name="configuration" ref="cacheFactoryConf" />
</bean>

<bean id="addressProvider" class="com.google.code.ssm.config.DefaultAddressProvider">
    <property name="address" value="${memcached.hosts}" />
</bean>
<bean id="cacheFactoryConf"
    class="com.google.code.ssm.providers.spymemcached.SpymemcachedConfiguration">
    <property name="consistentHashing" value="true" />
    <property name="useBinaryProtocol" value="true" />
    <property name="keyPrefixSeparator" value=".xxx." />
    <property name="useNameAsKeyPrefix" value="true" />
    <!-- 
    <property name="authDescriptor">
        <bean class="net.spy.memcached.auth.AuthDescriptor">
            <constructor-arg index="0">
                <value>PLAIN</value>
            </constructor-arg>
            <constructor-arg index="1">
                <bean class="net.spy.memcached.auth.PlainCallbackHandler">
                    <constructor-arg index="0">
                        <value>${memcached.username}</value>
                    </constructor-arg>
                    <constructor-arg index="1">
                        <value>${memcached.password}</value>
                    </constructor-arg>
                </bean>
            </constructor-arg>
        </bean>
    </property>
    -->
</bean>

Java应用程序中的Memcached身份验证失败

2 个答案: