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# Node.js SDK

# 源码

请从GitHub获取项目源码，https://github.com/SinaCloudStorage/scs-sdk-js (opens new window)

# 说明

新浪云存储(SCS) SDK for Node.js

# 安装

npm install scs-sdk

# 初始化SinaCloud

var SinaCloud = require('scs-sdk');

# 配置

# 方法1

var config = new SinaCloud.Config({
	accessKeyId: '你的accessKey', 
	secretAccessKey: '你的secretKey',
	sslEnabled: false
});
//全局生效:
SinaCloud.config = config;

# 方法2

创建一个json文件config.json：

{
	"accessKeyId": "你的accessKey", 
	"secretAccessKey": "你的secretKey",
	"sslEnabled": true
}

加载config.json：

//全局生效:
SinaCloud.config.loadFromPath('./config.json');

# 方法3

var config = new SinaCloud.Config({
	accessKeyId: '你的accessKey', 
	secretAccessKey: '你的secretKey',
	sslEnabled: false
});
//实例化:
var s3 = new SinaCloud.S3();
//当前实例生效:
s3.config = config;

# 实例化

# 示例1

var s3 = new SinaCloud.S3();

# 示例2

var mybucket = new SinaCloud.S3({params: {Bucket: 'mybucket'}});

# 示例3

var myobject = new SinaCloud.S3({params: {Bucket: 'mybucket', Key: 'mykey'}});

# 调用

# 创建一个bucket并上传一个文件

var SinaCloud = require('scs-sdk');
SinaCloud.config.loadFromPath('./config.json');

var myBucket = new SinaCloud.S3({params: {Bucket: 'myBucket'}});
myBucket.createBucket(function() {
	var data = {Key: 'myKey', Body: 'Hello!'};
	myBucket.putObject(data, function(err, data) {
		if (err) {
			console.log("Error uploading data: ", err);
		} else {
			console.log("Successfully uploaded data to myBucket/myKey");
		}
	});
});

# 列出所有bucket

var s3 = new SinaCloud.S3();
s3.listBuckets(function(err, data) {
	if (err) {
	    // an error occurred
	    console.log(err, err.stack);
	} else {
	    console.log(data);
	}
});

# 列出bucket中的文件

var params = {
	Bucket: 'bucket-name',	//required
	Delimiter: '/',			//用'/'折叠
	Marker: '',				//分页标签
	MaxKeys: 100,			//最大成员数
	Prefix: 'xxx'			//按前缀查询
};

s3.listObjects(params, function(err, data) {
	if (err) {
	    // an error occurred
	    // console.log(err, err.stack); 
	} else {
	    // successful response
	    console.log(data);
	}
});

# 下载文件示例1

var s3 = new SinaCloud.S3();
var params = {Bucket: 'myBucket', Key: 'myImageFile.jpg'};
var file = require('fs').createWriteStream('/path/to/file.jpg');
s3.getObject(params).createReadStream().pipe(file);

# 下载文件示例2

var s3 = new SinaCloud.S3();
var params = {Bucket: 'myBucket', Key: 'myImageFile.jpg'};
var file = require('fs').createWriteStream('/path/to/file.jpg');

s3.getObject(params).on('httpData', function(chunk) {
	file.write(chunk); 
}).on('httpDone', function() {
	file.end();
}).on('httpDownloadProgress', function(progress) {
	console.log(progress);
}).on('error', function(error) {
	console.log(error);
}).on('success', function() {
	console.log('success');
}).on('httpHeaders', function(statusCode, headers) {
	console.log('statusCode: ' + statusCode + "\n", headers);
}).send();

# 上传文件示例1

var s3 = new SinaCloud.S3();
var file = require('fs').createReadStream('/path/to/file.jpg');
var params = {Bucket: 'myBucket', Key: 'myImageFile.jpg', Body: file};
s3.putObject(params).on('httpHeaders', function(statusCode, headers) { 
	console.log(headers);
}).on('httpUploadProgress', function(progress) {
	console.log(progress);
}).on('error', function(error) {
	console.log(error);
}).on('success', function() {
	console.log('success');
}).send();

# 上传文件示例2

var fileName = '/file/path/IMG_3218.JPG';
var remoteFilename = 'IMG_3218.JPG';
var s3 = new SinaCloud.S3();
var fileBuffer = require('fs').readFileSync(fileName);

s3.putObject({
	ACL: 'public-read',
	Bucket: 'mybucket',
	Key: remoteFilename,
	Body: fileBuffer
}, function(error, response) {
	if (error) {
		console.log(error);
	} else {
		console.log('uploaded file[' + fileName + '] to [' + remoteFilename + ']');
	}
});

# 上传文件示例3

var myBucket = new SinaCloud.S3({params: {Bucket: 'myBucket'}});
var data = {Key: 'myKey', Body: 'Hello!'};
myBucket.putObject(data, function(err, data) {
	if (err) {
		console.log("Error uploading data: ", err);
	} else {
		console.log("Successfully uploaded data to myBucket/myKey");
	}
});

# 获取bucket的acl信息

var s3bucket = new SinaCloud.S3({params: {Bucket: 'myBucket'}});
s3bucket.getBucketAcl(function(err, data) {
	if (err) {
	    console.log(err);	// an error occurred
	} else {
		console.log(data);	// successful response
	}
});

# 删除一个文件

var s3 = new SinaCloud.S3();
var params = {Bucket: 'myBucket', Key: 'myImageFile.jpg'};
s3.deleteObject(params, function(err, data) {
	if (err) {
		console.log(err);	// an error occurred
	} else {
		console.log(data);	// successful response
	}
});

# 删除一个bucket

var s3 = new SinaCloud.S3();
var params = {Bucket: 'myBucket'};
s3.deleteBucket(params, function(err, data) {
	if (err) {
		console.log(err);	// an error occurred
	} else {
		console.log(data);	// successful response
	}
});

# 获取一个带有签名的用于下载的url

var s3 = new SinaCloud.S3();
// This URL will expire in one minute (60 seconds)
var params = {Bucket: 'myBucket', Key: 'myKey', Expires: 60};
var url = s3.getSignedUrl('getObject', params);
console.log("The URL is", url);

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