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May 16, 2020 12:13
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <div id="btn" >download</div> | |
| <script> | |
| function blobDownload (filepath, fileName) { | |
| console.log(filepath, fileName) | |
| let xhr = new XMLHttpRequest() | |
| xhr.open('GET', filepath, true) | |
| xhr.responseType = 'arraybuffer' | |
| xhr.addEventListener('progress', function(event) { | |
| if (event.lengthComputable) { | |
| var percentComplete = event.loaded / event.total * 100; | |
| console.log(percentComplete); | |
| } | |
| }) | |
| xhr.onload = function() { | |
| console.log('xxx') | |
| if (this.status === 200) { | |
| let type = xhr.getResponseHeader('Content-Type') | |
| let blob = new Blob([this.response], {type: type}) | |
| if (typeof window.navigator.msSaveBlob !== 'undefined') { | |
| /* | |
| * IE workaround for "HTML7007: One or more blob URLs were revoked by closing | |
| * the blob for which they were created. These URLs will no longer resolve as | |
| * the data backing the URL has been freed." | |
| */ | |
| window.navigator.msSaveBlob(blob, fileName) | |
| } else { | |
| let URL = window.URL || window.webkitURL | |
| let objectUrl = URL.createObjectURL(blob) | |
| if (fileName) { | |
| var a = document.createElement('a') | |
| // safari doesn't support this yet | |
| if (typeof a.download === 'undefined') { | |
| window.location = objectUrl | |
| } else { | |
| a.href = objectUrl | |
| a.download = fileName | |
| document.body.appendChild(a) | |
| a.click() | |
| a.remove() | |
| } | |
| } else { | |
| window.location = objectUrl | |
| } | |
| } | |
| } | |
| } | |
| xhr.send() | |
| } | |
| function download() { | |
| console.log('downlod') | |
| const pdfUrl = 'https://hexyun.oss-cn-beijing.aliyuncs.com/cloud_expo_5eb6152d14b7b129cf44ec71/1589614759580/c847e339f224406b501aa914ddb63115.pdf'; | |
| const zipUrl = 'https://hexyun.oss-cn-beijing.aliyuncs.com/cloud_expo_5eb6152d14b7b129cf44ec71/1589613164172/736f70c83dd51df59eb5b24bc4448a01.zip'; | |
| const imgUrl = 'https://hexyun.oss-cn-beijing.aliyuncs.com/cloud_expo_5eb6152d14b7b129cf44ec71/1589595760894/c1a675b5f7a67366a0c580556835b6a4.jpg?x-oss-process=image/resize,w_200'; | |
| blobDownload(imgUrl, 'c1a675b5f7a67366a0c580556835b6a4.jpg') | |
| } | |
| document.querySelector('#btn').addEventListener('click', download) | |
| </script> | |
| </body> | |
| </html> |
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