由于“自动装配依赖注入失败”，无法启动嵌入式 Tomcat

Question

我是 Java 新手，目前负责管理一个新应用程序。我正在尝试启动应用程序并失败并出现以下错误：

Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:687)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:967)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:956)
        at com.thinkbiganalytics.controller.Application.main(Application.java:53)
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
        at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:98)
        at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:75)
        at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:378)
        at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:155)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:157)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130)
        ... 7 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List) throws java.lang.Exception; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'formBasedWebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.security.authentication.AuthenticationProvider com.thinkbiganalytics.auth.FormBasedWebSecurityConfiguration.authenticationProvider; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authenticationProvider': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.thinkbiganalytics.auth.AuthenticationService com.thinkbiganalytics.auth.AuthServiceAuthenticationProvider.authenticationService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authenticationService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClient com.thinkbiganalytics.datalake.podium.auth.PodiumAuthenticationService.podiumRestClient; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'podiumRestClientImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private boolean com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClientImpl.useHttps; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [${podium.useHttps}]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)

Answer 1

TL;DR：阅读 Spring 给您的错误。

让我们接受错误并系统地检查它：

Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
            at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
            at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531)
            at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
            at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:687)
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:967)
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:956)
            at com.thinkbiganalytics.controller.Application.main(Application.java:53)
    Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
            at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:98)
            at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:75)
            at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:378)
            at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:155)
            at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:157)
            at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130)
            ... 7 more
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List) throws java.lang.Exception; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'formBasedWebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.security.authentication.AuthenticationProvider com.thinkbiganalytics.auth.FormBasedWebSecurityConfiguration.authenticationProvider; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authenticationProvider': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.thinkbiganalytics.auth.AuthenticationService com.thinkbiganalytics.auth.AuthServiceAuthenticationProvider.authenticationService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authenticationService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClient com.thinkbiganalytics.datalake.podium.auth.PodiumAuthenticationService.podiumRestClient; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'podiumRestClientImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private boolean com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClientImpl.useHttps; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [${podium.useHttps}]
            at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)

首先我们有Exception in thread "main" - 除了由于“无法启动嵌入式容器”而导致状态崩溃之外，它并没有告诉我们任何信息。

好的，是什么原因造成的，让我们进入下一个级别：

Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat

好的，不多说了。让我们进入下一个级别：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed

好的，现在我们到了某个地方 - 由于自动装配问题，我们无法创建 WebSecurityConfiguration，但这是什么问题？

Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List)

啊，好吧，Spring 无法自动装配该方法，为什么不呢？

nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'formBasedWebSecurityConfiguration'

啊，好吧 - 所以它不能自动装配那个方法方法它不能创建一个formBasedWebSecurityConfiguration。为什么不？

Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.security.authentication.AuthenticationProvider

啊，不AuthenticationProvider。为什么不呢？

Could not autowire field: private com.thinkbiganalytics.auth.AuthenticationService com.thinkbiganalytics.auth.AuthServiceAuthenticationProvider.authenticationService

啊，不authenticationService。为什么不呢？

Could not autowire field: com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClient

啊，不PodiumRestClient。为什么不呢？

Could not autowire field: private boolean com.thinkbiganalytics.datalake.podium.restclient.PodiumRestClientImpl.useHttps

好的，它无法创建PodiumRestClientImpl，因为它无法自动连接boolean useHttps。为什么不呢？

Failed to convert value of type 'java.lang.String' to required type 'boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [${podium.useHttps}]

因此它无法自动连接PodiumRestClientImpl.useHttps，因为它无法将值为${podium.useHttps} 的String 转换为boolean。很公平。

因此，您在自动装配配置值时似乎没有正确使用 SpEL，或者您没有配置 PropertySource 来将占位符解析为配置值。