java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'purchaseInputOrderController': Unsatisfied dependency expressed through field 'purchaseInputOrderService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'purchaseInputOrderServiceImpl': Unsatisfied dependency expressed through field 'handlerFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'purchaseInputOrderHandlerFactory' defined in file [E:\IdeaProjects\eshop\target\classes\com\wz\eshop\wms\service\impl\PurchaseInputOrderHandlerFactory.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wz.eshop.wms.service.impl.PurchaseInputOrderHandlerFactory]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
@Component
public class PurchaseInputOrderHandlerFactory {
/**
* 更新采购入库单状态handler
*/
@Autowired
private UpdatePurchaseInputOrderStatusHandler updatePurchaseInputOrderStatusHandler;
/**
* 通知采购中心handler
*/
@Autowired
private InformPurchaseCenterHandler informPurchaseCenterHandler;
/**
* 更新本地库存handler
*/
@Autowired
private UpdateStockHandler updateStockHandler;
/**
* 通知调度中心handler
*/
@Autowired
private InformScheduleCenterHandler informScheduleCenterHandler;
/**
* 通知财务中心handler
*/
@Autowired
private InformFinanceCenterHandler informFinanceCenterHandler;
/**
* 构造函数：组装责任链条
*/
public PurchaseInputOrderHandlerFactory() {
updatePurchaseInputOrderStatusHandler.setSuccessor(informPurchaseCenterHandler);
informPurchaseCenterHandler.setSuccessor(updateStockHandler);
updateStockHandler.setSuccessor(informScheduleCenterHandler);
informScheduleCenterHandler.setSuccessor(informFinanceCenterHandler);
}
/**
* 创建采购入库单handler链条
* @param purchaseInputOrder 采购入库单
* @return handler链条
* @throws Exception
*/
public PurchaseInputOrderHandler getHandlerChain() throws Exception {
return updatePurchaseInputOrderStatusHandler;
}
}
此时PurchaseInputOrderHandlerFactory()还未构造好，就设置属性，会报构造函数空指针错误。
修改如下：
@Component
public class PurchaseInputOrderHandlerFactory {
/**
* 是否构建好了handler链条
*/
private Boolean buildedHandlerChain = false;
/**
* 更新采购入库单状态handler
*/
@Autowired
private UpdatePurchaseInputOrderStatusHandler updatePurchaseInputOrderStatusHandler;
/**
* 通知采购中心handler
*/
@Autowired
private InformPurchaseCenterHandler informPurchaseCenterHandler;
/**
* 更新本地库存handler
*/
@Autowired
private UpdateStockHandler updateStockHandler;
/**
* 通知调度中心handler
*/
@Autowired
private InformScheduleCenterHandler informScheduleCenterHandler;
/**
* 通知财务中心handler
*/
@Autowired
private InformFinanceCenterHandler informFinanceCenterHandler;
/**
* 创建采购入库单handler链条
* @return handler链条
* @throws Exception
*/
public PurchaseInputOrderHandler getHandlerChain() throws Exception {
if(!buildedHandlerChain) {
buildHandlerChain();
}
return updatePurchaseInputOrderStatusHandler;
}
/**
* 构造handler链条
* @throws Exception
*/
private void buildHandlerChain() throws Exception {
updatePurchaseInputOrderStatusHandler.setSuccessor(informPurchaseCenterHandler);
informPurchaseCenterHandler.setSuccessor(updateStockHandler);
updateStockHandler.setSuccessor(informScheduleCenterHandler);
informScheduleCenterHandler.setSuccessor(informFinanceCenterHandler);
}
}
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