标签：nbsp 依赖 异常 stp launch 原创文章 process Servle exception
在Intellij IDEA中默认所有 scope 为 provided 的依赖不会被加入到 classpath；
想想配置正确，怎么不能创建窗容器呢
ava.lang.ClassNotFoundException: javax.servlet.ServletContext
2020-03-21 17:33:17,156 WARN [org.springframework.context.support.ClassPathXmlApplicationContext] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘mvcContentNegotiationManager‘: Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.web.accept.ContentNegotiationManagerFactoryBean] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘mvcContentNegotiationManager‘: Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.web.accept.ContentNegotiationManagerFactoryBean] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:262) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1198) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1123) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:144) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85) at com.ibaiqi.spider.service.TestDeplication.listRecruits(TestDeplication.java:14) at com.ibaiqi.spider.service.TestDeplicationAAA.main(TestDeplicationAAA.java:31) Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.web.accept.ContentNegotiationManagerFactoryBean] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:245) ... 15 more Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ... 18 more Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 22 more Disconnected from the target VM, address: ‘127.0.0.1:52084‘, transport: ‘socket‘ Process finished with exit code 1
异常详情：
这是我遇到的异常控制台截图，如下：
异常解释：
在Intellij IDEA中默认所有 scope 为 provided 的依赖不会被加入到 classpath；
所以在编译器启动 spring boot 项目时，会由于某些依赖加载不到而报 javax.servlet.ServletContext 异常。
解决办法：
方法一、 修改【IDEA】- Edit Configurations 的配置项：
步骤1：菜单栏 -> Run -> Edit Configurations
步骤2：Run/Debug Configurations -> Application -> Configuration -> 勾选：include dependencies with "Provided" scope
方法二、修改【pom.xml 】文件中的配置：
步骤1：找到图片中的 “spring-boot-starter-tomcat” 标签，有三种方式可以尝试；
将 <scope>provided</scope> 注释掉 ；
<scope> 标签内容provided改成compile：<scope>compile</scope> ；
<scope>标签内写明具体版本，如：<version>1.5.2.RELEASE</version>；
步骤2：这是关于容器的配置，需要把容器tomcat重新加载一下。
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版权声明：本文为CSDN博主「田潇文」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/weixin_44259720/article/details/94602764
原创:idea启动项目的是否报错：java.lang.ClassNotFoundException: javax.servlet.ServletContext
标签：nbsp 依赖 异常 stp launch 原创文章 process Servle exception
原文地址：https://www.cnblogs.com/asplover/p/12540544.html
