embedded.AnnotationConfigEmbeddedWeb ApplicationContext@1e67b872 has been closed already

nested exception is java.lang.IllegalStateException: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWeb
ApplicationContext@1e67b872 has been closed already
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
        at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835)
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741)
        ... 36 more
Caused by: java.lang.IllegalStateException: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1e67b872 has been closed 
already
        at org.springframework.context.support.AbstractApplicationContext.assertBeanFactoryActive(AbstractApplicationContext.java:1065)
        at org.springframework.context.support.GenericApplicationContext.getAutowireCapableBeanFactory(GenericApplicationContext.java:307)
        at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:275)
        at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$ValidatedLocalValidatorFactoryBean.<init>(ConfigurationPro
pertiesBindingPostProcessor.java:412)
        at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.getValidator(ConfigurationPropertiesBindingPostProcessor.j
ava:368)
        at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.determineValidator(ConfigurationPropertiesBindingPostProce
ssor.java:352)
        at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBin
dingPostProcessor.java:314)
        at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBin
dingPostProcessor.java:291)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBe
anFactory.java:409)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)

上面的一大堆报错，原因就是下面这个报错简介引起的

        The Tomcat connector configured to listen on port 8080 failed to start. The port may already be in use or the connector may be misconfigured.

可以通过update端口解决端口冲突问题：

1. Update 通过 application.properties

/src/main/resources/application.properties

server.port=8085

2. Update 通过 application.yml

/src/main/resources/application.yml

server:
  port: 8085

3. Update 通过 WebServerFactoryCustomizer

创建一个 CustomContainer 类, 实现WebServerFactoryCustomizer 接口, 继承它的自定义方法并且设值你的新端口. 这个会覆盖application.yml和application.properties里面的端口

package org.websparrow;

import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.stereotype.Component;

@Component
public class CustomContainer implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {

	@Override
	public void customize(ConfigurableServletWebServerFactory factory) {
		
		factory.setPort(8085);
	}
}