如何让axios在遇到HTTP 302时不抛出异常，而是返回AxiosResponse？

Question

我有一个 axios 代码，它调用一个返回 302 和一个Location:标头的端点。我正在编写一个测试，该测试应该评估方法响应并确认正确的（HTTP 302）响应以及检查Location:URL 内容。

所以我有一个测试代码（开玩笑）

   let axiosReply = await axios.get(this.redirectUrl, {
       maxRedirects: 0 // do not follow redirects...
   });
   expect(axiosReply.status).toBe(302);
   // some checks of header Location: follow

但是，axios 会抛出错误：

Error: Request failed with status code 302

    at createError (C:\<my project folder>\node_modules\axios\lib\core\createError.js:16:15)
    at settle (C:\<my project folder>\node_modules\axios\lib\core\settle.js:17:12)
    at IncomingMessage.handleStreamEnd (C:\<my project folder>\node_modules\axios\lib\adapters\http.js:260:11)
    at IncomingMessage.emit (events.js:215:7)
    at endReadableNT (_stream_readable.js:1184:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)

如何配置 Axios 只返回回复而不抛出错误？

Answer 1

为了不这样做throw，请使用valudateStatus选项：

 result = await axios.get(this.url, {
            validateStatus: function (status) {
                // if this function returns true, exception is not thrown, so
                // in simplest case just return true to handle status checks externally.
                return true;
            }
        });


if (result.status === StatusCodes.FORBIDDEN) {
   // react on a 403 error in a custom way
}