Axios 错误：....data.pipe 不是函数

Question

所以我基本上尝试使用 axios 从 url 下载图像，但出现此错误：

TypeError: streamResponse.data.pipe is not a function

我执行此图像下载的函数如下（请注意，这是在一个类中）：

/**
 * Download poster
 */
async downloadPoster() {

    // Writer stream where we want to download the poster image
    const writer = fs.createWriteStream(this.poster.file);

    // This grabs the second part of the image url that we want
    const resultsResponse = await axios({
        url: this.poster.url,
        method: 'GET',
        responseType: 'json',
        adapter: httpAdapter
    });

    // Zero results
    if (resultsResponse.data.total_results <= 0) {
        logger.log(language[Config.language].posterNotFound + this.movie.title, 'error');
        return false;
    }

    // Create the poster download URL
    var posterDownloadUrl = new URL(Config.api.posterUrl + resultsResponse.data.results[0].poster_path);

    const streamResponse = await axios({
        url: posterDownloadUrl,
        method: 'GET',
        responseType: 'stream',
        adapter: xhrAdapter
    });

    // Write data
    streamResponse.data.pipe(writer);

    return new Promise((resolve, reject) => {
        writer.on('finish', resolve);
        writer.on('error', reject);
    });

}

我假设流响应的适配器是 xhr 适配器。无论如何，我已经尝试了两个适配器，并且都给出了完全相同的错误。但这两个请求确实发生了（我可以在开发工具中看到它们）。

因此不会造成混淆，我在文件顶部导入了适配器：

const httpAdapter = require('axios/lib/adapters/http');
const xhrAdapter = require('axios/lib/adapters/xhr');

我在这里可能做错了什么？

Answer 1

这是您的代码的更简单版本。

代码：

const downloadImage = async (url) => {
    // Writer stream where we want to download the image
    const writer = fs.createWriteStream("./image.png");

    const streamResponse = await axios({
        url,
        method: 'GET',

        // that the point!!!
        // change responseType to stream
        // pipe only work with 'stream'
        responseType: 'stream'
    });

    // Write data
    streamResponse.data.pipe(writer);

    writer.on('finish', () => console.log("Finished"));
    writer.on('error', () => console.error("Error while dowloading image"));
}
const imageLink = "https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Image_created_with_a_mobile_phone.png/1200px-Image_created_with_a_mobile_phone.png";
downloadImage(imageLink);