Java spring data hazelcast@Query注释提供NullPointerException

当按如下方式使用findAll（）时，SpringBootTest中使用的库成功检索列表

@Override
public List<Store> getStores() {
    return storeRepository.findAll();
}

存储库

public interface StoreRepository extends HazelcastRepository<Store,String> {

    @Query("cityId=%s and countryId=%s")
    public List<Store> getStores(String cityId, String countryId);

}

有财产丢失了吗？如果是这样，为什么它与findAll（）一起工作

默认的

findAll（）

方法调用

SimpleKeyValueRepository

实例中的Spring数据，它使用

KeyValueTemplate（此实例具有HazelcastKeyValueAdapter）

findAll（）方法

因此，

@Query

annoted查询Hazelcast-Spring数据实现的

@KeySpace

注释值

getMap

方法调用hazelcastInstance的

getMap

方法，该方法的键空间值为map键

简而言之，您需要向Store类添加

@KeySpace（“yourMapName”）

注释

---

额外信息；当您不将

@KeySpace（“yourMapName”）

放在类上时，它将以确切的包名存储，如com.yourpackage.model.store

public interface StoreRepository extends HazelcastRepository<Store,String> {

    @Query("cityId=%s and countryId=%s")
    public List<Store> getStores(String cityId, String countryId);

}

java.lang.NullPointerException: Retrieving a map instance with a null name is not allowed!

    at com.hazelcast.util.Preconditions.checkNotNull(Preconditions.java:59)
    at com.hazelcast.instance.HazelcastInstanceImpl.getMap(HazelcastInstanceImpl.java:183)
    at com.hazelcast.instance.HazelcastInstanceProxy.getMap(HazelcastInstanceProxy.java:99)
    at org.springframework.data.hazelcast.repository.support.StringBasedHazelcastRepositoryQuery.getMap(StringBasedHazelcastRepositoryQuery.java:68)
    at org.springframework.data.hazelcast.repository.support.StringBasedHazelcastRepositoryQuery.execute(StringBasedHazelcastRepositoryQuery.java:48)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)