0

我制作了一个多上传文件表单。

用户取消后，一旦使用 cancel() 取消了相应的 axios 调用，我就会有一种奇怪的行为。我的 axios 调用被捕获在 then() 中，而它应该被捕获在 catch() 中。then() 内部的响应返回undefined.

我很难确定我是否在前端部分做错了什么，我认为我的电话可能缺少一些标题或者它可能在后端部分？

      const payload = { file, objectId: articleId, contentType: 'article' };

      const source = axios.CancelToken.source();

      // callback to execute at progression
      const onUploadProgress = (event) => {
        const percentage = Math.round((100 * event.loaded) / event.total);
        this.handleFileUploadProgression(file, {
          percentage,
          status: 'pending',
          cancelSource: source,
        });
      };

      attachmentService
        .create(payload, { onUploadProgress, cancelToken: source.token })
        .then((response) => {
          // cancelation response ends up here with a `undefined` response content
        })
        .catch((error) => {
          console.log(error);
          // canceled request do not reads as errors down here
          if (axios.isCancel(error)) {
            console.log('axios request cancelled', error);
          }
        });

服务本身定义如下

export const attachmentService = {
  create(payload, requestOptions) {
    // FormData cannot be decamelized inside an interceptor so it's done before, here.
    const formData = new FormData();
    Object.entries(payload).forEach(([key, value]) =>
      formData.append(decamelize(key), value),
    );
    return api
      .post(resource, formData, {
        headers: {
          'Content-Type': 'multipart/form-data',
        },
        ...requestOptions,
      })
      .then((response) => {
        console.log(response, 'cancelled request answered here as `undefined`');
        return response.data;
      })
      .catch((error) => {
        // not caught here (earlier)
        return error.data;
      });
  },
};

在文件对象执行时调用取消

file.cancelSource.cancel('Request was cancelled by the user');
4

1 回答 1

1

正如@estus-flask 在评论中所建议的那样，问题是我在服务内部发现了错误（为时过早）。谢谢！

export const articleService = {
  create(payload, requestOptions) {
    // FormData cannot be decamelized inside an interceptor so it's done before, here.
    const formData = new FormData();
    Object.entries(payload).forEach(([key, value]) =>
      formData.append(decamelize(key), value),
    );
    return api.post(resource, formData, {
      headers: {
        'Content-Type': 'multipart/form-data',
      },
      ...requestOptions,
    });
  },
};
于 2021-04-27T17:28:45.110 回答