@cainiaofe/cn-utils/es/utils/oss/index.js

菜鸟前端基础工具库

import { basename } from 'path-browserify';
import { isImage } from "../../common/type";
/**
 * 下载图片
 */
var downloadImg = function (url, _fileName) {
    var fileName = _fileName || basename(url);
    var image = new Image();
    image.setAttribute('crossOrigin', 'Anonymous');
    image.onload = function () {
        var canvas = document.createElement('canvas');
        var context = canvas.getContext('2d');
        canvas.width = image.width;
        canvas.height = image.height;
        context === null || context === void 0 ? void 0 : context.drawImage(image, 0, 0, image.width, image.height);
        var canvasUrl = canvas.toDataURL('images/png');
        var a = document.createElement('a');
        a.download = fileName;
        a.href = canvasUrl;
        a.click();
    };
    image.onerror = function () {
        commonDownload(url, _fileName);
    };
    var tempUrl = new URL(url);
    if (tempUrl.search) {
        image.src = "".concat(url, "&v=").concat(Date.now());
    }
    else {
        image.src = "".concat(url, "?v=").concat(Date.now());
    }
};
/**
 * 通用下载
 */
var commonDownload = function (fileUrl, _fileName) {
    var fileName = _fileName || basename(fileUrl);
    var a = document.createElement('a');
    a.target = '_blank';
    a.href = fileUrl;
    a.download = fileName;
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
};
/**
 * 下载文件
 * @param fileUrl 下载的文件路径
 * @param fileName 重命名下载文件
 */
export var download = function (fileUrl, fileName) {
    // 防护代码
    if (!fileUrl)
        return;
    fileName = fileName || '';
    if (isImage(fileUrl) || isImage(fileName)) {
        downloadImg(fileUrl, fileName);
    }
    else {
        commonDownload(fileUrl, fileName);
    }
};