为什么“服务器没有响应"?在 Swagger UI 中? [英] Why is there "no response from server" in Swagger UI?

问题描述

我的 API 调用在 Postman 中正常工作.但是当我从 Swagger UI 发送请求时，它对所有请求都显示服务器无响应":

My API calls work correctly in Postman. But when I send requests from Swagger UI, it shows "no response from server" for all requests:

响应正文
没有内容

响应代码
0

响应头

{
  "error": "no response from server"
}

问题是什么以及如何解决?

What can the problem be and how to fix it?

浏览器控制台显示以下错误:

The browser console shows these errors:

无法加载资源:net::ERR_CONNECTION_REFUSED

Failed to load resource: net::ERR_CONNECTION_REFUSED

未捕获的类型错误:无法读取未定义的属性长度"
  在 showStatus (index.js:24)
  在 showErrorStatus (index.js:24)
  错误 (index.js:607) 在 spec-converter.js:533
  在 Request.callback (index.js:24)
  在 Request.crossDomainError (index.js:24)
  在 XMLHttpRequest.xhr.onreadystatechange (index.js:24)

Uncaught TypeError: Cannot read property 'length' of undefined
   at showStatus (index.js:24)
   at showErrorStatus (index.js:24)
   at error (index.js:607) at spec-converter.js:533
   at Request.callback (index.js:24)
   at Request.crossDomainError (index.js:24)
   at XMLHttpRequest.xhr.onreadystatechange (index.js:24)

推荐答案

net::ERR_CONNECTION_REFUSED 听起来您需要在本地主机上启用 CORS，以便它发送 Access-Control-Allow-Origin: * 响应中的标头.您如何执行此操作取决于您使用的服务器.更多信息在这里:

net::ERR_CONNECTION_REFUSED sounds like you need to enable CORS on your localhost, so that it sends the Access-Control-Allow-Origin: * header in responses. How you do this depends on the server you use. More info here:

https://enable-cors.org/server.html

https://github.com/swagger-api/swagger-ui/#cors-support

您可能还需要允许 OPTIONS 飞行前请求.

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