Question

我的 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

<groupId>com.qroom</groupId>
<artifactId>qroom</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>qroom</name>
<description>qRoom Server</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.4.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-autoconfigure</artifactId>
        <version>2.0.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.3.5.Final</version>
    </dependency>

    <dependency>
        <groupId>org.xerial</groupId>
        <artifactId>sqlite-jdbc</artifactId>
        <version>3.23.1</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-oauth2</artifactId>
    </dependency>
</dependencies>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>
</project>

启动我的应用程序时，出现以下错误：

org.springframework.context.ApplicationContextException：无法启动Web服务器；无法启动Web服务器。嵌套的异常是org.springframework.boot.web.server.WebServerException：无法启动嵌入式Tomcat 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh（ServletWebServerApplicationContext.java:155）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:544）〜[spring-context-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh（ServletWebServerApplicationContext.java:140）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:762）上[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.SpringApplication.refreshContext（SpringApplication.java:398）上[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:330）[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:1258）上[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:1246）上[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在com.qroom.QroomApplication.main（QroomApplication.java:10）[classes /：na] 引起原因：org.springframework.boot.web.server.WebServerException：无法启动嵌入式Tomcat 在org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize（TomcatWebServer.java:126）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.embedded.tomcat.TomcatWebServer。（TomcatWebServer.java:86）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer（TomcatServletWebServerFactory.java:413）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer（TomcatServletWebServerFactory.java:174）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer（ServletWebServerApplicationContext.java:179）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh（ServletWebServerApplicationContext.java:152）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] ...省略了8个通用框架由以下原因引起：org.springframework.beans.factory.BeanCreationException：在类路径资源[org / springframework / boot / actuate / autoconfigure / endpoint / web / ServletEndpointManagementContextConfiguration $ WebMvcServletEndpointManagementContextConfiguration.class]中创建名称为“ servletEndpointRegistrar”的bean时出错。通过工厂方法失败；嵌套的异常是org.springframework.beans.BeanInstantiationException：无法实例化[org.springframework.boot.act.ateu.endpoint.web.ServletEndpointRegistrar]：工厂方法servletEndpointRegistrar抛出了异常；嵌套的异常是java.lang.NoClassDefFoundError：org / springframework / boot / autoconfigure / web / servlet / DispatcherServletPath 在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:590）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1247）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1096）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:535）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:495）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0（AbstractBeanFactory.java:317）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:315）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:204）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType（ServletContextInitializerBeans.java:226）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType（ServletContextInitializerBeans.java:214）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans（ServletContextInitializerBeans.java:91）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.ServletContextInitializerBeans。（ServletContextInitializerBeans.java:80）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans（ServletWebServerApplicationContext.java:250）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize（ServletWebServerApplicationContext.java:237）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup（TomcatStarter.java:54）〜[spring-boot-2.0.4.RELEASE.jar：2.0.4.RELEASE] 在org.apache.catalina.core.StandardContext.startInternal（StandardContext.java:5245）〜[tomcat-embed-core-8.5.32.jar：8.5.32] 在org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）〜[tomcat-embed-core-8.5.32.jar：8.5.32] 在org.apache.catalina.core.ContainerBase $ StartChild.call（ContainerBase.java:1421）〜[tomcat-embed-core-8.5.32.jar：8.5.32] 在org.apache.catalina.core.ContainerBase $ StartChild.call（ContainerBase.java:1411）〜[tomcat-embed-core-8.5.32.jar：8.5.32] 在java.util.concurrent.FutureTask.run（FutureTask.java:266）〜[na：1.8.0_131] 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）〜[na：1.8.0_131] 在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617）〜[na：1.8.0_131] 在java.lang.Thread.run（Thread.java:748）〜[na：1.8.0_131] 由以下原因引起：org.springframework.beans.BeanInstantiationException：无法实例化[org.springframework.boot.act.ateu.endpoint.web.ServletEndpointRegistrar]：工厂方法servletEndpointRegistrar抛出异常；嵌套的异常是java.lang.NoClassDefFoundError：org / springframework / boot / autoconfigure / web / servlet / DispatcherServletPath 在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:185）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:582）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] ...省略了23个通用框架造成原因：java.lang.NoClassDefFoundError：org / springframework / boot / autoconfigure / web / servlet / DispatcherServletPath 在org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration $ WebMvcServletEndpointManagementContextConfiguration.servletEndpointRegistrar（ServletEndpointManagementContextConfiguration.java:71）〜[spring-boot-actuator-autoconfigure-2.0.4.RELEASE.jar：2.0.4.RELEASE ] 在org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration $ WebMvcServletEndpointManagementContextConfiguration $$ EnhancerBySpringCGLIB $$ a6542fda.CGLIB $ servletEndpointRegistrar $ 0（）〜[spring-boot-actuator-autoconfigure-2.0.4.RELEASE.2.0： .4.RELEASE] 在org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration $ WebMvcServletEndpointManagementContextConfiguration $$ EnhancerBySpringCGLIB $$ a6542fda $$ FastClassBySpringCGLIB $ dc5ad488.invoke（）〜[spring-boot-actuator-autoconfigure-2。 jar：2.0.4.RELEASE] 在org.springframework.cglib.proxy.MethodProxy.invokeSuper（MethodProxy.java:228）〜[spring-core-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.context.annotation.ConfigurationClassEnhancer $ BeanMethodInterceptor.intercept（ConfigurationClassEnhancer.java:361）〜[spring-context-5.0.8.RELEASE.jar：5.0.8.RELEASE] 在org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration $ WebMvcServletEndpointManagementContextConfiguration $$ EnhancerBySpringCGLIB $$ a6542fda.servletEndpointRegistrar（）〜[spring-boot-actuator-autoconfigure-2.0.4.RELEASE.jar：2.0.4。发布] 在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）〜[na：1.8.0_131] 在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）〜[na：1.8.0_131] 在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）〜[na：1.8.0_131] 在java.lang.reflect.Method.invoke（Method.java:498）〜[na：1.8.0_131] 在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:154）〜[spring-beans-5.0.8.RELEASE.jar：5.0.8.RELEASE] ...省略了24个通用框架引起原因：java.lang.ClassNotFoundException：org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath 在java.net.URLClassLoader.findClass（URLClassLoader.java:381）〜[na：1.8.0_131] 在java.lang.ClassLoader.loadClass（ClassLoader.java:424）〜[na：1.8.0_131] 在sun.misc.Launcher $ AppClassLoader.loadClass（Launcher.java:335）〜[na：1.8.0_131] 在java.lang.ClassLoader.loadClass（ClassLoader.java:357）〜[na：1.8.0_131] ...省略了35个通用框架

嵌套异常是java.lang.NoClassDefFoundError：org / springframework / boot / autoconfigure / web / servlet / DispatcherServletPath

我发现了，这个问题是 spring-cloud-starter-oauth2 依赖项。如果我将其移除，则一切正常。我该如何解决这个问题？

Answer 1

如果不使用dependencyManagement，Maven将无法解决不依赖版本的依赖关系。为org.springframework.cloud

添加版本标签

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-oauth2</artifactId>
    <version>2.0.0.RELEASE</version>
</dependency>

Answer 2

M。 Deinum的评论帮助我解决了问题

对于初学者，请停止混合使用同一框架的版本（2.0.4和2.0.2）。要覆盖休眠版本，请向元素添加5.3.5.Final并删除休眠依赖项。注意：DispatcherServletPath是在Spring Boot 2.0.4中添加的，因此您的版本不匹配可能是导致此问题的根本原因

无法启动嵌入式Tomcat NoClassDefFoundError DispatcherServletPath

2 个答案: