我使用Apache Ignite 2.3和cassandra 2.1.9作为我的持久层。 我正在使用cacheStoreFactory类，它保存并从数据库中获取数据。 我在这个类中自动连接一些依赖项，但是它将变为null。
这是我的示例点燃配置文件：
//The GameObject with the pivot point to move
public GameObject pointToRotate;
//The Pivot point to move the GameObject around
public Transform pivotPoint;
//The angle to Move the pivot point
public Vector3 angle = new Vector3(0f, 180f, 0f);
//The duration for the rotation to occur
public float rotDuration = 5f;
void Start()
{
StartCoroutine(rotateObject(pointToRotate, pivotPoint.position, angle, rotDuration));
}
这是我的ItemCacheStore类代码：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
">
<description>Main Spring file for ignite configuration.</description>
<bean id="cacheIgniteBean" class="org.apache.ignite.IgniteSpringBean">
<property name="configuration">
<bean id="ignite.cfg" class="org.apache.ignite.configuration.IgniteConfiguration">
<property name="dataStorageConfiguration">
<bean class="org.apache.ignite.configuration.DataStorageConfiguration">
<property name="dataRegionConfigurations">
<list>
<!--
Defining a data region that will consume up to 2 GB of RAM.
-->
<bean class="org.apache.ignite.configuration.DataRegionConfiguration">
<!-- Custom region name. -->
<property name="name" value="2GB_Region"/>
<!-- 500 MB initial size (RAM). -->
<property name="initialSize" value="#{500L * 1024 * 1024}"/>
<!-- 2 GB maximum size (RAM). -->
<property name="maxSize" value="#{2L * 1024 * 1024 * 1024}"/>
<!-- Enabling RANDOM_LRU eviction for this region. -->
<property name="pageEvictionMode" value="RANDOM_LRU"/>
</bean>
</list>
</property>
</bean>
</property>
<property name="cacheConfiguration">
<list>
<bean class="org.apache.ignite.configuration.CacheConfiguration">
<property name="name" value="item"/>
<property name="cacheMode" value="PARTITIONED"/>
<property name="atomicityMode" value="ATOMIC"/>
<property name="backups" value="0"/>
<property name="cacheStoreFactory">
<bean class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">
<constructor-arg value="com.tgt.gom.cacheserver.store.ItemCacheStore"/>
</bean>
</property>
<property name="readThrough" value="${ignite.config.cache.item.readThrough}"/>
<property name="writeThrough" value="${ignite.config.cache.item.writeThrough}"/>
<property name="writeBehindEnabled" value="${ignite.config.cache.item.writeBehindEnabled}"/>
<property name="writeBehindFlushSize"
value="${ignite.config.cache.item.writeBehindFlushSize}"/>
<property name="writeBehindFlushFrequency"
value="${ignite.config.cache.item.writeBehindFlushFrequency}"/>
<property name="writeBehindFlushThreadCount"
value="${ignite.config.cache.item.writeBehindFlushThreadCount}"/>
<property name="writeBehindBatchSize"
value="${ignite.config.cache.item.writeBehindBatchSize}"/>
</bean>
<bean class="org.apache.ignite.configuration.CacheConfiguration">
<property name="name" value="location"/>
<property name="cacheMode" value="PARTITIONED"/>
<property name="atomicityMode" value="ATOMIC"/>
<property name="backups" value="0"/>
<property name="cacheStoreFactory">
<bean class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">
<constructor-arg value="com.tgt.gom.cacheserver.store.LocationCacheStore"/>
</bean>
</property>
<property name="readThrough" value="${ignite.config.cache.item.readThrough}"/>
<property name="writeThrough" value="${ignite.config.cache.item.writeThrough}"/>
<property name="writeBehindEnabled" value="${ignite.config.cache.item.writeBehindEnabled}"/>
<property name="writeBehindFlushSize"
value="${ignite.config.cache.item.writeBehindFlushSize}"/>
<property name="writeBehindFlushFrequency"
value="${ignite.config.cache.item.writeBehindFlushFrequency}"/>
<property name="writeBehindFlushThreadCount"
value="${ignite.config.cache.item.writeBehindFlushThreadCount}"/>
<property name="writeBehindBatchSize"
value="${ignite.config.cache.item.writeBehindBatchSize}"/>
</bean>
</list>
</property>
<!--<property name="includeEventTypes">
<util:constant static-field="org.apache.ignite.events.EventType.EVTS_TASK_EXECUTION"/>
</property>-->
<property name="failureDetectionTimeout" value="5000"/>
<property name="discoverySpi">
<bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
<property name="ipFinder">
<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
<!-- <bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder"> -->
<property name="addresses">
<list>
<value>127.0.0.1:47500..47509</value>
</list>
</property>
</bean>
</property>
</bean>
</property>
</bean>
</property>
</bean>
</beans>
在调用load方法的ItemCacheStore类中，@Slf4j
@Service
public class ItemCacheStore extends CacheStoreAdapter<String, ItemV1DTO> implements Serializable {
private static final long serialVersionUID = 1L;
@Autowired
private ItemRepository itemRepository;
@Autowired
private ItemCacheStoreAsync itemCacheStoreAsync;
private static final String LOG_OP_INFO = "Item_Cache_Store";
@Override
public ItemV1DTO load(String item_id) throws CacheLoaderException {
ItemV1DTO itemV1DTO = null;
System.out.println("in item cache store ");
try {
ItemEntity itemEntity = itemRepository.findOne(item_id);
if (itemEntity != null) {
itemV1DTO = mapToItemDTO(itemEntity);
}
} catch (Exception e) {
throw new CacheLoaderException("failed to load item data from cassandra" + e.getMessage());
}
return itemV1DTO;
}
}
字段为itemRepository。但是，当我在另一个控制器类中自动装配相同的null bean时，它可以正常工作。
我注意到的另一件事是，如果我在ItemRepository类中放置一个带有@PostConstruct注释的方法，那么那时我可以看到注入ItemCacheStore的依赖关系但是在加载时方法被调用然后再次ItemRepository。
答案 0 :(得分：0)
问题是以下配置：
<property name="cacheStoreFactory">
<bean class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">
<constructor-arg value="com.tgt.gom.cacheserver.store.ItemCacheStore"/>
</bean>
</property>
您正在创建类型为FactoryBuilder的Spring bean，并且您传递了类名ItemCacheStore。屏幕后面会发生的是FactoryBuilder会创建{strong>新实例 ItemCacheStore。 Spring不会管理这个新实例，因此所有字段都是null。
所以基本上你最终会得到两个ItemCacheStore实例：
@Service注释而由Spring容器创建的一个。所有自动连接的字段都可以使用。FactoryBuilder创建。它不会由Spring管理，所有自动连接的字段都是null。要解决这个问题，有几种可能性：
CassandraCacheStoreFactory。AutowireHelper，或使用Springs SpringBeanAutowiringSupport在非Spring托管bean中注入bean。