}if(mbd.getFactoryMethodName() !=null) {returninstantiateUsingFactoryMethod(beanName, mbd, args); }//Shortcut when re-creating the same bean...booleanresolved =false;booleanautowireNecessary =false;if(args ==null) {synchronized(mbd.constructorArgumentLock) {if(mbd.resolvedConstructorOrFactoryMetho...
第一节讲解Spring启动的时候说到,Spring内部先解析了所有的配置,加载所有的Bean定义后,再根据需要对Bean进行实例化和初始化。除开Spring自己主动新建的对象,第一次根据Bean定义加载对象的动作出现在AbstractApplicationContext的invokeBeanFactoryPostProcessors方法,该方法会在Spring容器中找出实现了BeanFactoryPostProcessor...
else if (requiredType != null) { // No args -> delegate to standard getBean method. return parentBeanFactory.getBean(nameToLookup, requiredType); } else { return (T) parentBeanFactory.getBean(nameToLookup); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16....
}elseif(requiredType !=null) {// No args -> delegate to standard getBean method.returnparentBeanFactory.getBean(nameToLookup, requiredType); }else{return(T) parentBeanFactory.getBean(nameToLookup); } }if(!typeCheckOnly) {this.markBeanAsCreated(beanName);// 标识Bean开始创建}StartupStepbean...
Spring IOC Notes-Core method analysis 其他 摘要: Spring IOC 学习笔记-核心方法分析 正文: 核心方法分析 scan–>doScan protected Set<BeanDefinitionHolder> doScan(String... basePackages) { Assert.notEmpty(basePackages, "At least one base package must be specified"); // 使用Set可以去重,BeanDefinition...
(beanName);// 一级缓存if(singletonObject==null){if(this.singletonsCurrentlyInDestruction){thrownewBeanCreationNotAllowedException(beanName,"Singleton bean creation not allowed while singletons of this factory are in destruction "+"(Do not request a bean from a BeanFactory in a destroy method ...
通知spring在创建当前Bean的时候,先去创建@DependsOn注解中配置的Bean。 源码流程 调用doGetBean方法 获取BeanName(transformedBeanName方法):获取FactoryBean的getObject方法中的值,name传值的前面需要加一个&符号。一个Bean有多个名字(别名),要获取到这个别名对应主要的BeanName。 FactoryBean直接走getObject的逻辑,普通...
singletonsCurrentlyInDestruction) { throw new BeanCreationNotAllowedException(beanName, "Singleton bean creation not allowed while singletons of this factory are in destruction " + "(Do not request a bean from a BeanFactory in a destroy method implementation!)"); } if (logger.isDebugEnabled()) ...
我们通过instantiateUsingFactoryMethod方法返回了bean的实例对象protected BeanWrapper createBeanInstance(String beanName, RootBeanDefinition mbd, @Nullable Object[] args) { ... if (mbd.getFactoryMethodName() != null) { return instantiateUsingFactoryMethod(beanName, mbd, args); } ...2.4...
In this tutorial, we’re going to go through different variants of the BeanFactory.getBean() method. Simply put, as the name of the method also suggests, this is responsible for retrieving a bean instance from the Spring container. 2. Spring Beans Setup First, let’s define a few Spring...