前端文件下载方法封装

export const downloadFileAxios = (fileUrl) => {
    axios({
        url: fileUrl,
        method: 'GET',
        responseType: 'blob',
    }).then((response) => {
            const contentDisposition = response.headers['content-disposition'];
            let filename = '';
            if (contentDisposition) {
                const filenameMatch = contentDisposition.match(/filename\*?=['"]?(?:UTF-\d['"]*)?([^;\r\n"']*)['"]?;?/);
                if (filenameMatch != null) {
                    filename = decodeURIComponent(filenameMatch[1]);
                }
            }
            if (!filename) {
                return Promise.reject(response)
            }
            const url = window.URL.createObjectURL(new Blob([response.data]));
            const link = document.createElement('a');
            link.href = url;
            link.setAttribute('download', filename);
            document.body.appendChild(link);
            link.click();
            window.URL.revokeObjectURL(url);
            Message.success("文件下载成功")
        }).catch((error) => {
            if (error.data) {
                // 转换 Blob 为 JSON
                let reader = new FileReader();
                reader.onload = function() {
                    let responseJson = JSON.parse(reader?.result as string);
                    Message.error(responseJson.msg);
                };
                reader.readAsText(error.data);
            } else {
                Message.error("文件下载失败")
            }
        });
}