如何在Spring GET端点中以编程方式构建和返回OpenApi 3.0文档?

时间:2020-03-26 20:56:38

标签: java spring swagger openapi springdoc

我有一个要求,我需要在我的微服务中有一个GET端点,该端点返回一个io.swagger.v3.oas.models.OpenAPI文档,我想知道如何组成该对象。原始形式的对象如下所示:

{
"openapi": "3.0.1",
"info": {
"title": "MY API",
"description": "API for accessing stuff and other stuff.",
"termsOfService": "http://website.com",
"contact": {
  "name": "Some chap",
  "url": "https://website.com/s/url",
  "email": "alwaysReplyAll@office.com"
},
"version": "1.0"
},
"paths": {
"/v1/user/{id}/properties": {
  "get": { ...etc etc

ive尝试过此操作,但文档只是空/空白:

@GetMapping("/openapi3")
public @ResponseBody OpenAPI swag() {
     OpenAPI swagDoc = new OpenAPI();
     GenericOpenApiContextBuilder builder = new GenericOpenApiContextBuilder();

    try {
        swagDoc = builder.buildContext(true).read();
    } catch (OpenApiConfigurationException e) {
        // handle error        
}
    return swagDoc;
}

我已经阅读了有关springfox的文章,但是他们文档中的示例非常清楚……我想知道这是否有必要。我对这个生成器不正确吗?

使用Gradle btw

2 个答案:

答案 0 :(得分:0)

根据评论中的讨论,您可以修改此方法,而无需使用WebClient。我必须在swagger服务中获取文档,然后使用此代码。您将不会返回OpenAPI对象,而只会返回一个字符串,因为您已经拥有原始的json。

getV2SwaggerDoc(new URL(“ ...”));

private String getV2SwaggerDoc(URL url) throws IOException {
    HttpURLConnection connection = (HttpURLConnection)url.openConnection();

    connection.setRequestMethod(RequestMethod.GET.toString());

    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));

    StringBuffer stringBuffer = new StringBuffer();

    String line;

    while ((line = reader.readLine()) != null)
        stringBuffer.append(line);

    reader.close();

    connection.disconnect();

    return stringBuffer.toString();
}

答案 1 :(得分:0)

我能够通过利用Spring的RestTemplate而不是Java的低级HTTP库来简化可接受的答案

private String retrieveSwaggerJson(String url) {
    return new RestTemplate()
            .getForEntity(url, String.class)
            .getBody();
}