springcloud Alibaba 2021.0.1.0 springboot 2.7.0 整合 Swagger3.0 报错解决方案

1. 引入依赖，版本 3.0.0 只引入一个即可

		<dependency>
		    <groupId>io.springfox</groupId>
		    <artifactId>springfox-boot-starter</artifactId>
		    <version>3.0.0</version>
		</dependency>

2. 配置类 SwaggerConfig

package org.fh.config;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.springframework.boot.actuate.autoconfigure.endpoint.web.CorsEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.endpoint.web.WebEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.web.server.ManagementPortType;
import org.springframework.boot.actuate.endpoint.ExposableEndpoint;
import org.springframework.boot.actuate.endpoint.web.EndpointLinksResolver;
import org.springframework.boot.actuate.endpoint.web.EndpointMapping;
import org.springframework.boot.actuate.endpoint.web.EndpointMediaTypes;
import org.springframework.boot.actuate.endpoint.web.ExposableWebEndpoint;
import org.springframework.boot.actuate.endpoint.web.WebEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.annotation.ControllerEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.annotation.ServletEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.servlet.WebMvcEndpointHandlerMapping;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.util.StringUtils;

import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.oas.annotations.EnableOpenApi;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

/**
 * 说明：Swagger 接口API生成
 * 作者：FH Admin Q313596790
 * from：fhadmin.cn
 */
@Configuration
@EnableOpenApi
public class SwaggerConfig {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.OAS_30)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage(\"org.fh.controller\"))	// 为当前包路径
                .paths(PathSelectors.any())
                .build();
    }

	private ApiInfo apiInfo() {
		return new ApiInfoBuilder()
				.title(\"FH Admin Swagger3 RESTful API\") 	// 页面标题
				.version(\"3.0\")								// 版本号
				.description(\"fhadmin.cn\")				    // 描述
				.build();
	}
	
	/**
	  * 增加如下配置可解决Spring Boot 2.6.x以上 与Swagger 3.0.0 不兼容问题
	**/
    @Bean
    public WebMvcEndpointHandlerMapping webEndpointServletHandlerMapping(WebEndpointsSupplier webEndpointsSupplier, ServletEndpointsSupplier servletEndpointsSupplier, ControllerEndpointsSupplier controllerEndpointsSupplier, EndpointMediaTypes endpointMediaTypes, CorsEndpointProperties corsProperties, WebEndpointProperties webEndpointProperties, Environment environment) {
        List<ExposableEndpoint<?>> allEndpoints = new ArrayList();
        Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
        allEndpoints.addAll(webEndpoints);
        allEndpoints.addAll(servletEndpointsSupplier.getEndpoints());
        allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
        String basePath = webEndpointProperties.getBasePath();
        EndpointMapping endpointMapping = new EndpointMapping(basePath);
        boolean shouldRegisterLinksMapping = this.shouldRegisterLinksMapping(webEndpointProperties, environment, basePath);
        return new WebMvcEndpointHandlerMapping(endpointMapping, webEndpoints, endpointMediaTypes, corsProperties.toCorsConfiguration(), new EndpointLinksResolver(allEndpoints, basePath), shouldRegisterLinksMapping, null);
    }
    private boolean shouldRegisterLinksMapping(WebEndpointProperties webEndpointProperties, Environment environment, String basePath) {
        return webEndpointProperties.getDiscovery().isEnabled() && (StringUtils.hasText(basePath) || ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
    }

}

3.Swagger 拦截配置

package org.fh.config;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
/**
 * 说明：Swagger 拦截配置
 * 作者：FH Admin
 * from fhadmin.org
 */
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
 
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.
                addResourceHandler(\"/swagger-ui/**\")
                .addResourceLocations(\"classpath:/META-INF/resources/webjars/springfox-swagger-ui/\")
                .resourceChain(false);
    }
 
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController(\"/swagger-ui/\")
                .setViewName(\"forward:/swagger-ui/index.html\");
    }
}
 

4. 访问 127.0.0.1:8081/swagger-ui/index.html

5. 接口说明案例

处理类上加注解，比如
@Api(\"用户注册登录接口\")
 
在方法上加注解，比如
@ApiOperation(value = \"登录\", notes=\"请求登录验证用户接口，校验登录是否成功\")
@ApiImplicitParam(name = \"KEYDATA\", value = \"用户名密码混淆码组合\", paramType = \"query\", required = true, dataType = \"String\")

  ​-----------------------------------------------------------------自定义表单
28. 定义模版：拖拽左侧表单元素到右侧区域，编辑表单元素，保存表单模版
29. 表单模版：编辑维护表单模版，复制表单模版，修改模版类型，预览表单模版
30. 我的表单：选择表单模版，编辑表单规则，是否上传图片、附件、开启富文本、挂靠流程开关等
31. 表单数据：从我的表单进去可增删改查表单数据，修改表单规则
32. 挂靠记录：记录表单数据和流程实例ID关联记录，可删除

来源：https://www.cnblogs.com/m13002622490/p/16299758.html
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