You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
138 lines
5.0 KiB
138 lines
5.0 KiB
5 months ago
|
<!doctype html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<meta charset="UTF-8">
|
||
|
|
<title>Ajax Post 上传</title>
|
||
|
|
<style>
|
||
|
|
h1, h2 {
|
||
|
|
font-weight: normal;
|
||
|
|
}
|
||
|
|
|
||
|
|
#msg {
|
||
|
|
margin-top: 10px;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<h1>PostObject 上传（Policy 保护，Ajax POST 请求）</h1>
|
||
|
|
|
||
|
|
<input id="fileSelector" type="file">
|
||
|
|
<input id="submitBtn" type="submit">
|
||
|
|
|
||
|
|
<div id="msg"></div>
|
||
|
|
|
||
|
|
<script src="common/cos-auth.min.js"></script>
|
||
|
|
<script>
|
||
|
|
(function () {
|
||
|
|
|
||
|
|
// 请求用到的参数
|
||
|
|
var Bucket = 'test-1250000000';
|
||
|
|
var Region = 'ap-guangzhou';
|
||
|
|
var protocol = location.protocol === 'https:' ? 'https:' : 'http:';
|
||
|
|
var prefix = protocol + '//' + Bucket + '.cos.' + Region + '.myqcloud.com/';
|
||
|
|
|
||
|
|
// 对更多字符编码的 url encode 格式
|
||
|
|
var camSafeUrlEncode = function (str) {
|
||
|
|
return encodeURIComponent(str)
|
||
|
|
.replace(/!/g, '%21')
|
||
|
|
.replace(/'/g, '%27')
|
||
|
|
.replace(/\(/g, '%28')
|
||
|
|
.replace(/\)/g, '%29')
|
||
|
|
.replace(/\*/g, '%2A');
|
||
|
|
};
|
||
|
|
|
||
|
|
// 获取权限策略
|
||
|
|
var getPostPolicyCredentials = function (opt, callback) {
|
||
|
|
var url = 'http://127.0.0.1:3000/post-policy?key=' + encodeURIComponent(opt.Key);
|
||
|
|
var xhr = new XMLHttpRequest();
|
||
|
|
xhr.open('GET', url, true);
|
||
|
|
xhr.onreadystatechange = function (e) {
|
||
|
|
if (xhr.readyState === 4) {
|
||
|
|
if (xhr.status === 200) {
|
||
|
|
var credentials;
|
||
|
|
try {
|
||
|
|
credentials = (new Function('return ' + xhr.responseText))();
|
||
|
|
} catch (e) {}
|
||
|
|
if (credentials) {
|
||
|
|
callback(null, credentials);
|
||
|
|
} else {
|
||
|
|
console.error(xhr.responseText);
|
||
|
|
callback('获取签名出错');
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
callback('获取签名出错');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
xhr.send();
|
||
|
|
};
|
||
|
|
|
||
|
|
// 上传文件
|
||
|
|
var uploadFile = function (file, callback) {
|
||
|
|
var Key = 'dir/' + file.name; // 这里指定上传目录和文件名
|
||
|
|
getPostPolicyCredentials({
|
||
|
|
Bucket: Bucket,
|
||
|
|
Key: Key,
|
||
|
|
ACL: 'default'
|
||
|
|
}, function (err, credentials) {
|
||
|
|
var fd = new FormData();
|
||
|
|
|
||
|
|
// 在当前目录下放一个空的 empty.html 以便让接口上传完成跳转回来
|
||
|
|
fd.append('key', Key);
|
||
|
|
|
||
|
|
// // 使用普通签名格式
|
||
|
|
// fd.append('Signature', credentials.Authorization);
|
||
|
|
// fd.append('x-cos-security-token', credentials.XCosSecurityToken || '');
|
||
|
|
|
||
|
|
// 使用 policy 签名保护格式
|
||
|
|
credentials.securityToken && fd.append('x-cos-security-token', credentials.securityToken);
|
||
|
|
fd.append('q-sign-algorithm', credentials.qSignAlgorithm);
|
||
|
|
fd.append('q-ak', credentials.qAk);
|
||
|
|
fd.append('q-key-time', credentials.qKeyTime);
|
||
|
|
fd.append('q-signature', credentials.qSignature);
|
||
|
|
fd.append('policy', credentials.policy);
|
||
|
|
|
||
|
|
// 文件内容
|
||
|
|
fd.append('file', file);
|
||
|
|
|
||
|
|
// xhr
|
||
|
|
var url = prefix;
|
||
|
|
var xhr = new XMLHttpRequest();
|
||
|
|
xhr.open('POST', url, true);
|
||
|
|
xhr.upload.onprogress = function (e) {
|
||
|
|
console.log('上传进度 ' + (Math.round(e.loaded / e.total * 10000) / 100) + '%');
|
||
|
|
};
|
||
|
|
xhr.onload = function () {
|
||
|
|
if (Math.floor(xhr.status / 100) === 2) {
|
||
|
|
var ETag = xhr.getResponseHeader('etag');
|
||
|
|
callback(null, {url: prefix + camSafeUrlEncode(Key).replace(/%2F/g, '/'), ETag: ETag});
|
||
|
|
} else {
|
||
|
|
callback('文件 ' + Key + ' 上传失败，状态码：' + xhr.status);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
xhr.onerror = function () {
|
||
|
|
callback('文件 ' + Key + ' 上传失败，请检查是否没配置 CORS 跨域规则');
|
||
|
|
};
|
||
|
|
xhr.send(fd);
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
// 监听表单提交
|
||
|
|
document.getElementById('submitBtn').onclick = function (e) {
|
||
|
|
var file = document.getElementById('fileSelector').files[0];
|
||
|
|
if (!file) {
|
||
|
|
document.getElementById('msg').innerText = '未选择上传文件';
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
file && uploadFile(file, function (err, data) {
|
||
|
|
console.log(err || data);
|
||
|
|
document.getElementById('msg').innerText = err ? err : ('上传成功，ETag=' + data.ETag);
|
||
|
|
});
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|