我試圖在Guice模塊中使用字符串緩存抽象機制。 我創建了攔截器:不能從Guice中的Spring Cache中驅逐DI應用程序
CacheManager cacheManager = createCacheManager(); bind(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
);
然後,執行字符串緩存接口和CacheManager的,最後我的註釋DAO類與@Cachable和@CacheEvict:
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;
}}
緩存僅僅是罰款 - 沒有問題在這裏,但是當我嘗試驅逐(調用在本例中除去方法),evrything崩潰和我看到:
異常在線程 「主」 org.springframework.expression.spel.SpelEvaluationException:EL1007E:(POS 10):字段或屬性「ID 'ca n不是被上空 在org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:205) 在org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:72)發現 at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:57) at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:93) at org.springframework.expression .spel.standard.SpelExpression.getValue(SpelExpression.java:88) at org.springframework.cache.interceptor.ExpressionEvaluator.key(ExpressionEvaluator.java:80) at org.springframework.cache.interceptor.CacheAspectSupport $ CacheOperationContext.generateKey (CacheAspectSupport.java:464) 個在org.springframework.cache.interceptor.CacheAspectSupport.inspectCacheEvicts(CacheAspectSupport.java:260) 在org.springframework.cache.interceptor.CacheAspectSupport.inspectAfterCacheEvicts(CacheAspectSupport.java:232) 在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(本機方法) 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)
什麼是錯在這裏? BTW,緩存的對象是:
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();
}
}