我正在开发一款Android应用,我希望从云中获取数据。 我将数据存储在Bluemix Object Storage中,但没有获得有关如何以简单方式访问数据的任何帮助。
我也尝试过AWS S3存储服务。它有一个简单的控制台,我可以从Android应用程序获取文件的URL,如下所示。
https://s3-ap-southeast-1.amazonaws.com/com.myapp/540.mp4
有没有这种方法可以在Bluemix中获取文件URL?
答案 0 :(得分:0)
根据您构建应用程序的方式,有几种可能的解决方案可以解决您的问题。
目前还没有发布Object Storage Android Client SDK。您可以在此处找到对象存储的当前SDK:
https://github.com/ibm-bluemix-mobile-services
根据您设置的后端,您可以轻松设置代理路由器,该路由器可安全地连接到您的对象存储服务实例,并将输出路由到可供Android应用程序使用的URL。
例如使用pkgcloud
和Node.js后端:
<强> routes.js 强>
var vcap_objectstorage = require('../utils/vcap')('Object-Storage'),
objectstorage = require('../modules/objectstorage');
module.exports = function(app) {
var router = app.loopback.Router();
// proxy for object storage service
router.get('/api/Products/image/:container/:file', function(req, res) {
objectstorage(vcap_objectstorage.credentials).download(req.params.container, req.params.file, function(download) {
download.pipe(res);
});
});
app.use(router);
}
<强> objectstorage.js 强>
var pkgcloud = require('pkgcloud');
module.exports = function(creds) {
var config = {
provider: 'openstack',
useServiceCatalog: true,
useInternal: false,
keystoneAuthVersion: 'v3',
authUrl: creds.auth_url,
tenantId: creds.projectId,
domainId: creds.domainId,
username: creds.username,
password: creds.password,
region: creds.region
};
return {
download: function(container, file, cbk) {
var client = pkgcloud.storage.createClient(config);
client.auth(function (error) {
if(error) {
console.error("Authorization error for storage client (pkgcloud): ", error);
}
else {
var request = client.download({
container: container,
remote: file
});
cbk(request);
}
});
}
};
};
答案 1 :(得分:0)
如何使用IBM Object Storage =&gt; Auth =&gt;创建容器=&gt;上传对象
var pkgcloud = require('pkgcloud');
var config = {
provider: 'openstack',
useServiceCatalog: true,
useInternal: false,
keystoneAuthVersion: 'v3',
authUrl: 'https://identity.open.softlayer.com',
tenantId: 'XXXXXXXXXXXXXX', //projectId from credentials
domainId: 'XXXXXXXXXXXXX',
username: 'XXXXXXXXXXXXXXX',
password: 'XXXXXXXXXXXXXXXX',
region: 'dallas' //dallas or london region
};
var storageClient = pkgcloud.storage.createClient(config);
storageClient.auth(function(err) {
if (err) {
console.error('error'+err);
}
else {
console.log(storageClient._identity);
}
});
var fs = require('fs');
storageClient.createContainer({
name: 'XXXXXXX'
}, function (err, container) {
if (err) {
console.error(err);
}
else {
var myFile = fs.createReadStream('/home/amit/Downloads/cloud-app-developer.png');
var upload = storageClient.upload({
container: container.name,
remote: 'cloud-app-developer.png'
});
upload.on('error', function(err) {
console.error(err);
});
upload.on('success', function(file) {
console.log(file.toJSON());
});
myFile.pipe(upload);
}
});