我正在尝试将字符串缓存抽象机制与 guice 模块一起使用。我创建了拦截器:
CacheManager cacheManager = createCacheManager(); 绑定(CacheManager.class).toInstance(cacheManager);
AppCacheInterceptor interceptor = new AppCacheInterceptor(
cacheManager,
createCacheOperationSource()
);
bindInterceptor(
Matchers.any(),
Matchers.annotatedWith(Cacheable.class),
interceptor
);
bindInterceptor(
Matchers.any(),
Matchers.annotatedWith(CacheEvict.class),
interceptor
);
然后,实现了Strings Cache接口和CacheManager,最后用@Cachable和@CacheEvict注解了我的DAO类:
public class DaoTester {
QssandraConsumer qs;
@CachePut(value = "cached_consumers", key = "#consumer.id")
public void save(QssandraConsumer consumer) {
qs = consumer;
}
@Cacheable(value = "cached_consumers")
public QssandraConsumer get(String id) {
if (id != null) {
qs.getId();
}
return qs;
}
@CacheEvict(value = "cached_consumers", key = "#consumer.id")
public void remove(QssandraConsumer consumer) {
qs = consumer;
}}
缓存很好 - 这里没有问题,但是当我尝试驱逐(在这个例子中调用 remove 方法)时,evrything 崩溃了,我看到:
线程“main”中的异常 org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 10): 在 org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference .java:205) 在 org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:57) 在 org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:72) 在 org. springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:93) 在 org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:88) 在 org.springframework.cache.interceptor.ExpressionEvaluator。 org.springframework 中的键(ExpressionEvaluator.java:80)。cache.interceptor.CacheAspectSupport$CacheOperationContext.generateKey(CacheAspectSupport.java:464) at org.springframework.cache.interceptor.CacheAspectSupport.inspectCacheEvicts(CacheAspectSupport.java:260) at org.springframework.cache.interceptor.CacheAspectSupport.inspectAfterCacheEvicts(CacheAspectSupport. java:232) at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:215) at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66) at qiwi.qommon.deployment.dao .DaoTester.main(DaoTester.java:44) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java :25) 在 java.lang.reflect.Method.invoke(Method.java:597) 在 com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
这里有什么问题?!顺便说一句,缓存的对象是:
public class QssandraConsumer implements Identifiable<String> {
private String id;
private String host;
@Override
public String getId() {
return id;
}
@Override
public void setId(String id) {
this.id = id;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
@Override
public boolean equals(Object object) {
if (this == object) {
return true;
}
if (null == object) {
return false;
}
if (!(object instanceof QssandraConsumer)) {
return false;
}
QssandraConsumer o = (QssandraConsumer) object;
return
Objects.equal(id, o.id)
&& Objects.equal(host, o.host);
}
@Override
public int hashCode() {
return Objects.hashCode(
id, host
);
}
@Override
public String toString() {
return Objects.toStringHelper(this)
.addValue(id)
.addValue(host)
.toString();
}
}