Question

刚刚创建了一个快速简单的沙盒＆＃39;用于测试Spring-boot的应用程序。

我在尝试运行它时遇到以下错误 - 无论版本控制如何（尝试下拉到1.4.7.RELEASE）。

此外，我在其他帖子上阅读的几乎所有答案似乎都表明某些地方的版本不匹配 - 但在这种情况下，这怎么可能？我试图使用父级来避免版本冲突开始。

POM

<?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.sandbox.springboot</groupId>
    <artifactId>SpringBootSandbox</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SpringBootSandbox</name>

    <packaging>war</packaging>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.8.RELEASE</version>
    </parent>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

ApplicationRunner

@SpringBootApplication//(scanBasePackages = "com.sandbox")
@ComponentScan("com.sandbox")
public class ApplicationRunner extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(ApplicationRunner.class);
    }

    public static void main(String[] args) throws Exception {

        SpringApplication.run(ApplicationRunner.class, args);
    }
}

异常

2017-10-20 10:48:42.483  WARN 8828 --- [           main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.config.internalAutoProxyCreator': Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/lang/annotation/Around
2017-10-20 10:48:42.485 ERROR 8828 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Destroy method on bean with name 'org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor' threw an exception

java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@2805c96b: startup date [Fri Oct 20 10:48:42 EDT 2017]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:414) [spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.ApplicationListenerDetector.postProcessBeforeDestruction(ApplicationListenerDetector.java:97) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:253) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:578) [spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:554) [spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:961) [spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:523) [spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:968) [spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1030) [spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:556) [spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:372) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1187) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1176) [spring-boot-1.4.7.RELEASE.jar:1.4.7.RELEASE]
at com.sandbox.configuration.ApplicationRunner.main(ApplicationRunner.java:31) [classes/:na]

Answer 1

经过一些游戏...并检查其他Spring启动设置后，我按如下方式调整了我的ApplicationRunner，现在它似乎运行没有错误。我还在研究这些方法之间的区别以及这个方法的工作原理。

@SpringBootApplication
@ComponentScan("com.sandbox")
public class BootApplicationRunner implements ApplicationRunner {

    public static void main(String[] args) throws Exception {

        SpringApplication.run(BootApplicationRunner.class, args);
    }

    public void run(ApplicationArguments args) throws Exception {

    }
}

Spring Boot - java.lang.IllegalStateException：未初始化ApplicationEventMulticaster

1 个答案: