VueJs/Axios - 如何通过 API 调用在浏览器中下载 pdf 文件

CRo*_*rts 2 c# api download vue.js axios

我能够让axios在浏览器上下载pdf文件,并且pdf中每页的页数/页面方向是正确的,但内容是空的。

这是我的 API:

[HttpGet]
    [Route("~/api/Document")]
    public HttpResponseMessage Get(int id)
    {
        var dataBytes = File.ReadAllBytes("c:\\temp\\test.pdf");

        var stream = new MemoryStream(dataBytes);

        HttpResponseMessage httpResponse = new HttpResponseMessage(System.Net.HttpStatusCode.OK);
        httpResponse.Content = new StreamContent(stream);
        httpResponse.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");
        httpResponse.Content.Headers.ContentDisposition.FileName = "test";
        httpResponse.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/octet-stream");

        return httpResponse;
    }
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然后我的 vue js axios 调用:

test: function () {
                var self = this;
                var uri = '/api/Document';
                axios.get(uri)
                    .then(function (response) {
                        console.log(response);
                        const url = window.URL.createObjectURL(new Blob([response.data]));
                        const link = document.createElement('a');
                        link.href = url;
                        link.setAttribute('download', 'test.pdf'); //or any other extension
                        document.body.appendChild(link);
                        link.click();
                })
                .catch(function (error) {

                });
            },
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然后下载该文件,但内容为空。

CRo*_*rts 5

我发现通过改变我的 Axios 方法来使用这个

axios({
                    url: uri,
                    method: 'GET',
                    responseType: 'blob', // important
                }).then(function (response) {
                        const url = window.URL.createObjectURL(new Blob([response.data]));
                        const link = document.createElement('a');
                        link.href = url;
                        link.setAttribute('download', 'test.pdf');
                        document.body.appendChild(link);
                        link.click();
                })
                .catch(function (error) {

                });
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现在它正在按预期工作。所以看起来它与声明响应类型有关:)