Springboot启动时报“run failed: Unable to find a single main class from the following candidates“

一、现象描述

Spring boot启动时报错误如下：

Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.4.1.RELEASE:run (default-cli) on project SpringBootHotDeploy: Execution default-cli of goal org.springframework.boot:spring-boot-maven-plugin:1.4.1.RELEASE:run failed: Unable to find a single main class from the following candidates [com.queen.controller.HotDeployAPP, com.queen.controller.APP] -> [Help 1]

从字面上理解就是无法从下列候选项中找到单个主类。这个问题笔者遇到时候比较懵逼，后来发现自己建了两个APP类，导致启动服务无法判断到底要启动哪一个APP类。

二、解决办法

解决方案很简单：删除一个你想要删除的APP就可以了

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