Java Spring 应用程序 - 向监听器 i 发送上下文初始化事件的异常

Question

我有一个 java spring 应用程序，它使用带有以下 spring jar 的 spring 3.0.7

spring-aop-3.0.7.RELEASE.jar

spring-asm-3.0.7.RELEASE.jar

spring-beans-3.0.7.RELEASE.jar

spring-context-3.0.7.RELEASE.jar

spring-core-3.0.7.RELEASE.jar

spring-data-jdbc-core-1.0.0.RELEASE.jar

spring-expression-3.0.7.RELEASE.jar

spring-jdbc-3.0.7.RELEASE.jar

spring-tx-3.0.7.RELEASE.jar

spring-web-3.0.7.RELEASE.jar

此应用程序在许多 VM 中运行良好。但是在一个虚拟机中，它会在服务器启动时抛出以下异常。

Exception sending context initialized event to listener instance of
    class org.springframework.web.context.ContextLoaderListener

感谢任何指点。

整个异常堆栈跟踪:

INFO: Initializing Spring root WebApplicationContext
May 13, 2015 3:28:01 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testCacheLoader': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.util.localization.LoadLocaleMessage com.caching.testCacheLoader.llm; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loadLocaleMessage': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.common.dao.CommonDAO com.util.localization.LoadLocaleMessage.commonDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'commonDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.caching.testCache com.common.dao.CommonDAOImpl.testCache; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testCache': Invocation of init method failed; nested exception is com.google.common.util.concurrent.UncheckedExecutionException: java.lang.NullPointerException
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)

@PostConstruct
public void init() { 
    cache = CacheBuilder.newBuilder().maximumSize(100)
                .refreshAfterWrite(8, TimeUnit.HOURS).removalListener(listener)
                .build(loader);

        ScheduledExecutorService ses = Executors
                .newSingleThreadScheduledExecutor();

        ses.scheduleWithFixedDelay(new Runnable() {
            public void run() {
                for (String key : cache.asMap().keySet()) {
                    cache.refresh(key);
                    logger.info("Refreshing cache . . . . ");
                }
            }
        }, 0, 5, TimeUnit.MINUTES);

        try {
            cache.get("LOCALIZATION");
        } catch (ExecutionException e) {
            e.printStackTrace();
        }
    }

Answer 1

查看异常的最后一部分:

Error creating bean with name 'testCache': 
    Invocation of init method failed; nested exception is
    com.google.common.util.concurrent.UncheckedExecutionException:
    java.lang.NullPointerException

testCache bean 的初始化方法看起来如何 - 这就是错误所在(NullPointerException)。

干杯，