NullPointException
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Minghui Liu
Apr 1, 2016, 12:44:36 AM4/1/16
to simple-spring-memecached
Hi there,
I am trying to use the latest lib with Spring 4.2.4... Here is my context xml
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:cache="http://www.springframework.org/schema/cache"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
<aop:aspectj-autoproxy/>
<import resource="classpath:simplesm-context.xml" />
<bean name="cacheManager" class="com.google.code.ssm.spring.SSMCacheManager">
<property name="caches">
<set>
<bean class="com.google.code.ssm.spring.SSMCache">
<constructor-arg name="cache" index="0" ref="moa"/>
<!-- 10 minutes -->
<constructor-arg name="expiration" index="1" value="600"/>
</bean>
</set>
</property>
</bean>
<bean name="moa" class="com.google.code.ssm.CacheFactory">
<property name="cacheClientFactory">
<bean class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl"/>
</property>
<property name="defaultSerializationType" value="JAVA"/>
<property name="addressProvider">
<bean class="com.google.code.ssm.config.DefaultAddressProvider">
<property name="address" value="127.0.0.1:11211"/>
</bean>
</property>
<property name="configuration">
<bean class="com.google.code.ssm.providers.xmemcached.XMemcachedConfiguration">
<property name="consistentHashing" value="true"/>
<property name="operationTimeout" value="5000"/>
<property name="useBinaryProtocol" value="true"/>
<property name="connectionPoolSize" value="20"/>
</bean>
</property>
</bean>
<cache:annotation-driven key-generator="myOptusAppCacheKeyGenerator" cache-manager="cacheManager" />
<bean name="myOptusAppCacheKeyGenerator" class="au.com.optus.express.moa.digital.common.support.MyOptusAppCacheKeyGenerator"/>
</beans>And when I tried to run a test... I am getting NPE:
Minghui Liu
Apr 1, 2016, 1:32:19 AM4/1/16
to simple-spring-memecached
Basically I don't think I need to import <import resource="classpath:simplesm-context.xml" />... as I don't need cacheBase. I am trying to use Spring cache annotations... But if I remove the above line. I will get the following exception:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'moa': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.google.code.ssm.aop.CacheBase com.google.code.ssm.CacheFactory.cacheBase; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.google.code.ssm.aop.CacheBase] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ... 100 more Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.google.code.ssm.aop.CacheBase com.google.code.ssm.CacheFactory.cacheBase; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.google.code.ssm.aop.CacheBase] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 108 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.google.code.ssm.aop.CacheBase] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ... 110 more
Minghui Liu
Apr 1, 2016, 2:22:17 AM4/1/16
to simple-spring-memecached
This is how I fixed the issue by updated your class:
public class CacheFactory implements AddressChangeListener, FactoryBean<Cache>, InitializingBean, DisposableBean {
...
@Autowired(required = false) // I made it optional
private CacheBase cacheBase;
...
boolean isCacheDisabled() {// added check null below, previously the NPE happens... But I don't need cacheBase bean at all, as I am using Spring cache annotations
return cacheBase != null && cacheBase.isCacheDisabled();
}...}Please advise if this is correct, if yes, could you fix this issue in this release?ThanksMinghui Liu
Jakub Białek
Apr 1, 2016, 1:22:41 PM4/1/16
to simple-spring-memecached
Hi,
Thank you for your comment. It seams that you are right and cacheBase and other beans from simplesm-context.xml aren't required. I'll double check it.
Could you please create a feature request on github? I'll try to implement it for next release or if you want I'll happy to see pull request :).
-- Ragnor
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Minghui Liu
Apr 13, 2016, 10:24:44 PM4/13/16
to simple-spring-memecached
Hi Ragnor,
That's wonderful. Our production release will be end of June... I will add a feature request on GitHub and if this can be incorporated, that would be great!!
Thanks a lot!
Ming
On Saturday, April 2, 2016 at 4:22:41 AM UTC+11, ragnor84 wrote:
Hi,Thank you for your comment. It seams that you are right and cacheBase and other beans from simplesm-context.xml aren't required. I'll double check it.Could you please create a feature request on github? I'll try to implement it for next release or if you want I'll happy to see pull request :).-- Ragnor
On 1 April 2016 at 08:22, Minghui Liu <minghui...@gmail.com> wrote:
This is how I fixed the issue by updated your class:public class CacheFactory implements AddressChangeListener, FactoryBean<Cache>, InitializingBean, DisposableBean {...@Autowired(required = false) // I made it optional
private CacheBase cacheBase;...boolean isCacheDisabled() {// added check null below, previously the NPE happens... But I don't need cacheBase bean at all, as I am using Spring cache annotations
return cacheBase != null && cacheBase.isCacheDisabled();
}...}Please advise if this is correct, if yes, could you fix this issue in this release?ThanksMinghui Liu
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