今天使用SpringBoot集成Swagger 输出如下错误信息:

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APPLICATION FAILED TO START
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Description:

An attempt was made to call the method org.springframework.plugin.core.PluginRegistry.getPluginFor(Ljava/lang/Object;)Ljava/util/Optional; but it does not exist. Its class, org.springframework.plugin.core.PluginRegistry, is available from the following locations:

    jar:file:/C:/programs/maven/localHouse/org/springframework/plugin/spring-plugin-core/1.2.0.RELEASE/spring-plugin-core-1.2.0.RELEASE.jar!/org/springframework/plugin/core/PluginRegistry.class

It was loaded from the following location:

    file:/C:/programs/maven/localHouse/org/springframework/plugin/spring-plugin-core/1.2.0.RELEASE/spring-plugin-core-1.2.0.RELEASE.jar


Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.plugin.core.PluginRegistry

按照错误提示，怀疑是包冲突，于是执行mvn dependency:tree >tree.log进行maven依赖查看，结果spring-plugin-core 1.2.0-RELEASE只有springfox在使用（即Swagger3），所以并不存在冲突的问题

解决方案：强制将依赖版本升级到2.0，问题解决

<!-- swagger3 接口文档生成器 -->
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-boot-starter</artifactId>
			<version>3.0.0</version>
			<exclusions>
				<exclusion>
					<groupId>org.springframework.plugin</groupId>
					<artifactId>spring-plugin-core</artifactId>
				</exclusion>
				<exclusion>
					<groupId>org.springframework.plugin</groupId>
					<artifactId>spring-plugin-metadata</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		
		<dependency>
			<groupId>org.springframework.plugin</groupId>
			<artifactId>spring-plugin-core</artifactId>
			<version>2.0.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.plugin</groupId>
			<artifactId>spring-plugin-metadata</artifactId>
			<version>2.0.0.RELEASE</version>
		</dependency>