Swagger2报错：无法访问 org.springframework.plugin.metadata.SimplePluginMetadata

配置代码：

package com.cy.config;

import com.github.xiaoymin.knife4j.spring.extension.OpenApiExtensionResolver;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2WebMvc;

/**
 * @description:
 * @author:
 * @version:
 * @date:
 **/
@Configuration
@EnableSwagger2WebMvc
public class Knife4jConfig {
    @Value("${knife4j.title:}")
    private String title;
    @Value("${knife4j.description:}")
    private String description;
    @Value("${knife4j.version:1.0.0}")
    private String version;
    @Value("${knife4j.terms-of-service-url:http://www.cy.com}")
    private String termsOfServiceUrl;
    @Value("${knife4j.licenseUrl:Powered By cy}")
    private String licenseUrl;
    @Value("${knife4j.license:http://www.cy.com}")
    private String license;
    @Value("${knife4j.contact.name:cy}")
    private String name;
    @Value("${knife4j.contact.url:http://www.cy.com}")
    private String url;
    @Value("${knife4j.contact.email:}")
    private String email;
    @Value("${knife4j.defaultGroup:}")
    private String defaultGroup;

    private OpenApiExtensionResolver openApiExtensionResolver;

    /**
     * @description: 接口文档配置
     * @author: cy
     * @version: V1.0
     * @date:
     **/
    @Autowired
    public Knife4jConfig(OpenApiExtensionResolver openApiExtensionResolver) {
        this.openApiExtensionResolver = openApiExtensionResolver;
    }

    @Bean
    public Docket commonApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .useDefaultResponseMessages(false)
                .apiInfo(apiInfo())
                .groupName("test-fluent-mybatis")
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.cy.controller"))
                .paths(PathSelectors.any())
                .build()
                .extensions(openApiExtensionResolver.buildExtensions("test-fluent-mybatis"))
                ;
    }

    private ApiInfo apiInfo() {
        Contact contact = new Contact(name, url, email);
        return new ApiInfoBuilder()
                .title(title)
                .contact(contact)
                .description(description)
                .termsOfServiceUrl(termsOfServiceUrl)
                .license(license)
                .licenseUrl(licenseUrl)
                .version(version)
                .build();
    }
}

问题：

解决方法：
添加maven配置：

		<dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.10.5</version>
        </dependency>

添加该配置后启动成功：

可以正常访问 Swagger了

第二次写文章，如果那里写的不好，不详细，在此抱歉！