Spring Boot 自动配置应用程序启动失败

Question

我已经构建了自己的启动器，但自动配置步骤因依赖冲突而失败。

这些是我的启动项目和上游项目正在使用的 Spring Boot 版本

'spring-boot-gradle-plugin', version2.1.8.RELEASE

'spring-boot-autoconfigure'，版本：'2.4.1'

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APPLICATION FAILED TO START
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Description:
An attempt was made to call a method that does not exist. The attempt was made from the following location:
    org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.lambda$addResourceHandlers$0(W
ebMvcAutoConfiguration.java:411)
The following method did not exist:
    'org.springframework.web.servlet.config.annotation.ResourceHandlerRegistration org.springframework.web.servlet.config.annotation.Re
sourceHandlerRegistration.addResourceLocations(org.springframework.core.io.Resource[])'
The method's class, org.springframework.web.servlet.config.annotation.ResourceHandlerRegistration, is available from the following loca
tions:
    jar:file:/opt/eureka/app.jar!/BOOT-INF/lib/spring-webmvc-5.3.2.jar!/org/springframework/web/servlet/config/annotation/ResourceHandl
erRegistration.class
The class hierarchy was loaded from the following locations:
    org.springframework.web.servlet.config.annotation.ResourceHandlerRegistration: jar:file:/opt/eureka/app.jar!/BOOT-INF/lib/spring-we
bmvc-5.3.2.jar!/
Action:
Correct the classpath of your application so that it contains a single, compatible version of org.springframework.web.servlet.config.an
notation.ResourceHandlerRegistration

Answer 1

从您的日志中，我看到了两个可能的问题之一：

1. 您将 spring-webmvc-5.3.2 覆盖到更高或更低版本的地方
2. 您的起始代码存在问题（如果它配置了您的 WebMvc）

尝试mvn dependency:tree 或gradle dependencies 来探索依赖关系。 附上您的入门代码。

Answer 2

我不得不使用 spring boot 2.4.1 来避免冲突。