1. NosuchMethodError org.springframework.beans.factory.support.genericBeanDefinition(xxxxx)

2. ClassNotFoundException: org.springframework.boot.SpringApplication

可能冲突的依赖是：

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

3. NosuchMethodError: org.springframework.boot.builder.SpringApplicationBuilder.xxxx

可能出问题的依赖是：

        <dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId></dependency>

4. NoClassDefFoundError: org/springframework/core/KotlinDetector

可能出现冲突的依赖是：

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

5. NolassDefFoundError: org/springframework/core/NativeDetector (spring-core要么冲突，要么版本低，升级它 ) 

        <dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId></dependency>

最后介绍一款maven 冲突排查神器插件 Maven Helper