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提供的定义在呈现openapi时未指定有效的版本字段

openapi swagger spring-boot java

liangqicai · 技术社区 · 2 年前

我正在将OpenAPI与我的项目集成,当我访问url时: http://127.0.0.1:11014/swagger-ui/index.html ,显示如下错误:

Unable to render this definition
The provided definition does not specify a valid version field.

Please indicate a valid Swagger or OpenAPI version field. Supported version fields are swagger: "2.0" and those that match openapi: 3.0.n (for example, openapi: 3.0.0).

这是OpenAPI配置:

package misc.config.openapi;

import io.swagger.v3.oas.models.ExternalDocumentation;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Info;
import io.swagger.v3.oas.models.info.License;
import org.springdoc.core.GroupedOpenApi;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * https://springdoc.org/
 * https://github.com/springdoc/springdoc-openapi
 */
@Configuration
public class OpenApiConfig {

    @Bean
    public GroupedOpenApi fortuneApi() {
        GroupedOpenApi.Builder builder = GroupedOpenApi.builder()
                .pathsToMatch("/fortune/**")
                .group("dddd");
        GroupedOpenApi groupedOpenApi = builder.build();
        return groupedOpenApi;
    }

    @Bean
    public OpenAPI fortuneAPI() {
        return new OpenAPI()
                .info(new Info().title("Fortune API")
                        .description("Spring shop sample application")
                        .version("v0.0.1")
                        .license(new License().name("Apache 2.0").url("http://springdoc.org")))
                .externalDocs(new ExternalDocumentation()
                        .description("SpringShop Wiki Documentation")
                        .url("https://springshop.wiki.github.org/docs"));
    }

}

我已经阅读了这个问题 Swagger..Unable to render this definition The provided definition does not specify a valid version field 并尝试了答案,但都不起作用。我应该怎么做才能指定版本?依赖关系如下所示:

    api "org.springdoc:springdoc-openapi-ui:1.6.9"

我做了一个最小的复制,发现正常的响应是json对象,但问题响应返回字符串。这是正确的响应:

{
    "openapi": "3.0.1",
    "info": {
        "title": "Fortune API",
        "description": "Spring shop sample application",
        "license": {
            "name": "Apache 2.0",
            "url": "http://springdoc.org"
        },
        "version": "v0.0.1"
    },
    "externalDocs": {
        "description": "SpringShop Wiki Documentation",
        "url": "https://springshop.wiki.github.org/docs"
    },
    "servers": [
        {
            "url": "http://127.0.0.1:11018",
            "description": "Generated server url"
        }
    ],
    "paths": {},
    "components": {}
}

这是我的项目中的问题响应:

"{\"openapi\":\"3.0.1\",\"info\":{\"title\":\"Fortune API\",\"description\":\"Spri......

0 回复 | 直到 2 年前

Dolphin 2 年前

最后我发现我更改json转换器导致了这个问题,这是一个解决方法:

@EnableWebMvc
@Configuration
public class WebConvertConfig implements WebMvcConfigurer {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        converters.add(new StringHttpMessageConverter());
    }
}

这 StringHttpMessageConverter 应该是第一个添加到转换器中的。我认为这是openapi的设计问题,使其难以使用。更多信息请点击此处:

Nothing4ever 1 年前

我遇到了同样的事情,但原因不同。端点 v3/api-docs 返回base64字符串而不是json。(有点像: eyJvcGVuYXBpIjoiMy4wLjEiLCJpbmZvIjp7InRpdGxlIjoiT3BlbkFQSSBkZWZpbml0aW9uIiwid.. ).

经过一番搜索,我发现当覆盖注册的默认spring-boot时 HttpMessageConverter ,您也应该注册ByteArrayHttpMessageConverter,以获得正确的springdoc openapi支持。

        converters.add(new ByteArrayHttpMessageConverter());
        converters.add(new MappingJackson2HttpMessageConverter(jacksonBuilder.build()));

笔记 在注册HttpMessageConverters时,顺序非常重要。

参考文献: