关于springboot集成swagger3时spring-plugin-core报错的问题

springboot集成knife4j的时候3.0.2版本出现了以下问题：

An attempt was made to call a method that does not exist. The attempt was made from the following location:
 
    springfox.documentation.schema.plugins.SchemaPluginsManager.viewProvider(SchemaPluginsManager.java:95)
 
The following method did not exist:
 
    org.springframework.plugin.core.PluginRegistry.getPluginFor(Ljava/lang/Object;)Ljava/util/Optional;
 
The method's class, org.springframework.plugin.core.PluginRegistry, is available from the following locations:
 
 jar:file:/Users/zhangyanping/Documents/software/maven/maven_repository/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:/Users/zhangyanping/Documents/software/maven/maven_repository/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

我自己的依赖如下：

 <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>3.0.2</version>
        </dependency>

 解决办法：将依赖中的spring-plugin-core去除，并添加高版本。解决之后依赖如下：

 <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>3.0.2</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.plugin</groupId>
                    <artifactId>spring-plugin-core</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
  
         <dependency>
            <groupId>org.springframework.plugin</groupId>
            <artifactId>spring-plugin-core</artifactId>
            <version>2.0.0.RELEASE</version>
        </dependency>

至此，问题就解决了