public interface BeanPostProcessor { @Nullable default Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException { return bean; } @Nullable default Object postProcessAfterInitialization(Object bean, String beanName
三种getBean的方法 （重载 参数不同） public interface BeanFactory { String FACTORY_BEAN_PREFIX = "&"; Object getBean(String var1) throws BeansException; <T> T getBean(String var1, Class<T> var2) throws BeansException; Object getBean(String
1.spring-aop底层就是动态代理，例如有两个切面类(A_Aspect和B_Aspect)同时切目标方法 A_Aspect{ try{ @Before(前置通知) mthod.invoke(obj,args)或是环绕通知的pjp.procced(args){------------------->此时并没有真正的执行目标方法，而是执行
示例代码 import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.util.ReflectionUtils; import java.lang.reflect.Method;
文章目录 前言目的设计思路BeanFactory改造点分析AbstractBeanFactory改造点分析实例化工具设计AbstractAutowireCapableBeanFactory改造点分析 类图代码结构 代码BeanFactoryAbstractBeanFactoryInstantiationStrategySimpleInstantiationStrategyCglibSubclassingInstant
public ClassPathXmlApplicationContext(String configLocation) throws BeansException { this(new String[] {configLocation}, true, null);} package services; public interface UserService { public void saveUser();}---------------------package services.imp
BeanPostProcessor 源码如下： public interface BeanPostProcessor { /** * Apply this BeanPostProcessor to the given new bean instance <i>before</i> any bean * initialization callbacks (like InitializingBean's <code>afterPr
从getSingleton方法开始： sharedInstance = getSingleton(beanName, new ObjectFactory<Object>() { @Override public Object getObject() throws BeansException { try {
1、在applicationContext-bean.xml中配置 <bean id="springContextUtil" class="com.vst.search.common.util.SpringContextUtil" lazy-init="false"/> 2、新建一个类 package com.vst.search.common.util; import org.springframework.beans.BeansE
课设做了个使用websocket在线聊天的小demo，在websocket调用service层时，报空指针异常，底层程序员就只会百度了~ 记下这个解决办法吧。 首先创建一个类 import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springfra
