Found duplicate classes/resources

很可能是多个三方依赖重复了，依赖个插件，这个插件能查找出依赖关系，

duplicate-finder-maven-plugin

使用命令显示

mvn dependency:tree

[INFO]    - org.springframework.cloud:spring-cloud-bus:jar:2.0.0.RELEASE:compile
[INFO]       +- org.springframework.cloud:spring-cloud-stream:jar:2.0.1.RELEASE:compile
[INFO]       |  +- org.springframework.boot:spring-boot-starter-validation:jar:2.0.4.RELEASE:compile
[INFO]       |  +- org.springframework:spring-messaging:jar:5.0.8.RELEASE:compile
[INFO]       |  +- org.springframework:spring-tuple:jar:1.0.0.RELEASE:compile
[INFO]       |  |  - com.esotericsoftware:kryo-shaded:jar:3.0.3:compile
[INFO]       |  |     - com.esotericsoftware:minlog:jar:1.3.0:compile
[INFO]       |  +- org.springframework.integration:spring-integration-tuple:jar:1.0.0.RELEASE:compile
[INFO]       |  - org.springframework.retry:spring-retry:jar:1.2.2.RELEASE:compile
[INFO]       - org.springframework.integration:spring-integration-core:jar:5.0.7.RELEASE:compile
[INFO]          - io.projectreactor:reactor-core:jar:3.1.8.RELEASE:compile
[INFO]             - org.reactivestreams:reactive-streams:jar:1.0.2:compile

可以清楚看出依赖关系，

然后在导入依赖的地方exclusion掉名字重复，没在用的就行.