java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object
© 版权声明:本文为博主原创文章,转载请注明出处
1.问题描述
搭建SSH框架,没有添加事务时一切正常,最后添加完事务后报错,并且怎么弄都是一样。报错信息如下:
警告: Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productDaoImpl' defined in file [E:\code\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SSH\WEB-INF\classes\org\ssh\product\dao\impl\ProductDaoImpl.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:102)
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:984)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:955)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:466)
... 19 more
Caused by: java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.resetAdviceMonitor(AbstractBeanFactoryPointcutAdvisor.java:81)
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.setBeanFactory(AbstractBeanFactoryPointcutAdvisor.java:76)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1593)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1561)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
... 31 more 六月 09, 2017 2:59:39 下午 org.springframework.web.context.ContextLoader initWebApplicationContext
严重: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productDaoImpl' defined in file [E:\code\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SSH\WEB-INF\classes\org\ssh\product\dao\impl\ProductDaoImpl.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:102)
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:984)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:955)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:466)
... 19 more
Caused by: java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.resetAdviceMonitor(AbstractBeanFactoryPointcutAdvisor.java:81)
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.setBeanFactory(AbstractBeanFactoryPointcutAdvisor.java:76)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1593)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1561)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
... 31 more 六月 09, 2017 2:59:39 下午 org.apache.catalina.core.StandardContext listenerStart
严重: 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 'productDaoImpl' defined in file [E:\code\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SSH\WEB-INF\classes\org\ssh\product\dao\impl\ProductDaoImpl.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:102)
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:984)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:955)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:466)
... 19 more
Caused by: java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object;
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.resetAdviceMonitor(AbstractBeanFactoryPointcutAdvisor.java:81)
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.setBeanFactory(AbstractBeanFactoryPointcutAdvisor.java:76)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1593)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1561)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
... 31 more 六月 09, 2017 2:59:39 下午 org.apache.catalina.core.StandardContext startInternal
2.解决方案:
百度了各种方法发现都没能解决问题,最后查jar包的时候发现有两个jar包版本不对,我用的是4.3.8版本,但是里面出现两个4.1.6的版本,查看引入的依赖的pom文件,发现Spring的依赖都是4.3.8版本的,然后只剩下一个struts2-spring-plugin.jar,查看其pom文件,发现确实依赖spring-beans和spring-context,然后一层层找父pom.xml,最后发现确实依赖版本是4.1.6,将struts2-spring-plugin的引用放在spring下面就一切正常了。


总结:maven项目加载依赖的机制是根据artifactId标签的内容开始顺序加载,如果依赖中已经存在名称相同的jar包,那么即使版本号不同也不会再重新加载。
所以引用依赖的时候还需要注意顺序问题,将自己需要的版本依赖放在前面。
java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableBeanFactory.getSingletonMutex()Ljava/lang/Object的更多相关文章
- java.lang.NoSuchMethodError: org.springframework.beans.factory.annotation.InjectionMetadata.<init>(Ljava/lang/Class;)V
相应我,是因为你SPRING MVC的包没有加全.你可以新建一个WEB项目.加入SPRING 3.0 的所有包.主要是WEB类的.就可以解决这个问题了.关键就是少包.特别是你的项目原来是SRPING ...
- java.lang.NoSuchMethodError: org.springframework.beans.factory.annotation.InjectionMetadata.<init>(L
关于错误: java.lang.NoSuchMethodError: org.springframework.beans.factory.annotation.InjectionMetadata.&l ...
- 解决 java.lang.ClassNotFoundException: org.springframework.beans.factory.config.EmbeddedValueResolver
1.今天用maven配置了一下dubbo的项目发现启动项目后意外报错: java.lang.ClassNotFoundException: org.springframework.beans.fact ...
- java.lang.NoSuchMethodError: org.springframework.beans.factory.xml.XmlReaderContext.getResourceLoader()Lorg/springframework/core/io/ResourceLoader
问题原因 在整合spring跟struts2是使用Maven,用到struts2-spring-plugin.jar,但是maven不但但加载了这个jar文件还有spring-beans:3.0.5. ...
- Exception in thread "main" java.lang.NoClassDefFoundError:org/springframework/beans/factory/config/EmbeddedValueResoler
参考自:https://www.cnblogs.com/quanbin/p/11100337.html 解决方法:检查发现spring的核心包spring-bean版本和其他核心包版本不同,更改为和其 ...
- NoSuchMethodError: org.springframework.beans.factory.config.BeanDefinition.getResolvableType
spring整合Mybatis报错: 解决方法: 检查maven依赖中的spring-jdbc和spring-webmvc是否版本一致 以下均为5.2.0.RELEASE版本 除此之外再检查是否有其他 ...
- Exception in thread "main" java.lang.AbstractMethodError: org.springframework.boot.context.config.ConfigFileApplicationListener.supportsSourceType(Ljava/lang/Class;)Z
依赖冲突,查看pom.xml文件 查看parent项目的依赖版本为 <parent> <groupId>org.springframework.boot</groupId ...
- org.springframework.beans.factory.config.MethodInvokingFactoryBean的使用
它有两种用法:一个是调用类的静态方法,一个是调用已在IOC容器中的bean的方法.调用结果也分两种,一种是有返回,那么也会作为bean注册到IOC容器中,另一种是没有返回值,那么实际上就是为了在启动时 ...
- org.springframework.beans.factory.config.PropertyPlaceholderConfigurer的systemPropertiesModeName属性
转自:https://www.cnblogs.com/huqianliang/p/5673701.html 使用PropertyPlaceholderConfigurer类载入外部配置 在Spring ...
随机推荐
- 纯HTML+CSS写出一颗会飘动的树,有没有惊艳到你呢?
前言 使用HTML+CSS能写出什么惊人的效果呢? 针对这个问题,我总会看到类似的回答,比如没有JS,前端永远都是静态的:HTML5要搭配JS,要不然一文不值. JS固然强大,但CSS也并非一文不值, ...
- HDU 6038.Function-数学+思维 (2017 Multi-University Training Contest - Team 1 1006)
学长讲座讲过的,代码也讲过了,然而,当时上课没来听,听代码的时候也一脸o((⊙﹏⊙))o 我的妈呀,语文不好是硬伤,看题意看了好久好久好久(死一死)... 数学+思维题,代码懂了,也能写出来,但是还是 ...
- HDU 6112.今夕何夕-蔡勒公式 (2017"百度之星"程序设计大赛 - 初赛(A)1005)
1005:今夕何夕 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Probl ...
- King of Karaoke
King of Karaoke Time Limit: 1 Second Memory Limit: 65536 KB It's Karaoke time! DreamGrid is performi ...
- 51nod 算法马拉松 34 Problem D 区间求和2 (FFT加速卷积)
题目链接 51nod 算法马拉松 34 Problem D 在这个题中$2$这个质数比较特殊,所以我们先特判$2$的情况,然后仅考虑大于等于$3$的奇数即可. 首先考虑任意一个点对$(i, j)$ ...
- UNION UNION-ALL
The UNION ALL operator may be what you are looking for. With this operator, you can concatenate the ...
- [Contest20180418]数学竞赛
题意:初始时$x=0$(长度),当$x$为长度时,你可以把$x$变成$\sin^{-1}x,\cos^{-1}x,\tan^{-1}x$之一($x$变为角度),若$x$为角度,你可以把$x$变成$\s ...
- java读取配置文件常用的四种方式
配置文件 放置在src下面 obj.properties className=com.store.order.dao.impl.OrderDaoImpl 方式一 @Test public void t ...
- 理解Promise简单实现的背后原理
在写javascript时我们往往离不开异步操作,过去我们往往通过回调函数多层嵌套来解决后一个异步操作依赖前一个异步操作,然后为了解决回调地域的痛点,出现了一些解决方案比如事件订阅/发布的.事件监听的 ...
- IMAP IDLE模式(推送邮件)
在电子邮件技术中,IDLE是RFC 2177中描述的一项IMAP功能,它允许客户端向服务器表明它已准备好接受实时通知. Internet消息访问协议IMAP4协议,它要求客户端轮询服务器来更改所选中的 ...