#SinaStorage SDK

##概述 新浪云存储Android平台SDK为第三方应用提供了简单易用的API调用服务，使第三方客户端无需了解复杂的验证机制即可进行授权、上传、下载等文件操作。您可以通过Maven进行构建本项目。

##SDK 环境要求

依赖库：

• google-gson-2.2.4

##快速上手

###1.创建bucket访问对象：

	import com.sina.cloudstorage.auth.AWSCrentials;
	import com.sina.cloudstorage.auth.BasicAWSCredentials;
	import com.sina.cloudstorage.services.scs.SCS;
	import com.sina.cloudstorage.services.scs.SCSClient;
	
	String accessKey = "你的accessKey";
	String secretKey = "你的secretKey";
	AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
	SCS conn = new SCSClient(credentials);

###2.bucket 操作:

• 列出所有bucket:

    /**
     * 获取所有bucket
     */
    public void getAllBuckets(){
    	List<Bucket> list = conn.listBuckets();
    	System.out.println("====getAllBuckets===="+list);
    }
  

• 创建bucket:

    /**
     * 创建bucket
     */
    public void createBucket(){
    	Bucket bucket = conn.createBucket("bucket-name");
    	System.out.println(bucket);
    }
  

• 删除bucket:

    /**
     * 删除bucket
     */
    public void deleteBucket(){
    	conn.deleteBucket("create-a-bucket");
    }
  

• 获取bucket ACL:

    /**
     * 获取bucket ACL
     */
    public void getBucketAcl(){
    	AccessControlList acl = conn.getBucketAcl("create-a-bucket");
    	System.out.println(acl);
    }
  

• 设置bucket ACL:

    /**
     * 设置bucket acl
     */
    public void putBucketAcl(){
    	AccessControlList acl = new AccessControlList();
    	acl.grantPermissions(UserIdGrantee.CANONICAL, Permission.Read, Permission.ReadAcp);
    	acl.grantPermissions(UserIdGrantee.ANONYMOUSE, 
    						Permission.ReadAcp,
    						Permission.Write,
    						Permission.WriteAcp);
    	acl.grantPermissions(new UserIdGrantee("UserId"), 
    						Permission.Read,
    						Permission.ReadAcp,
    						Permission.Write,
    						Permission.WriteAcp);
    	
    	conn.setBucketAcl("create-a-bucket", acl);
    }
  

• 列bucket中所有文件: /** * 列bucket中所有文件 */ public void listObjects(){ ObjectListing objectListing = conn.listObjects("test"); System.out.println(objectListing); }

###3.object 操作:

• 获取文件信息:

    /**
     * 获取object metadata
     */
    public void getObjectMeta(){
    	ObjectMetadata objectMetadata = conn.getObjectMetadata("bucket-name", "/test/file.txt");
    	System.out.println(objectMetadata.getUserMetadata());
    	System.out.println(objectMetadata.getContentLength());
    	System.out.println(objectMetadata.getRawMetadata());
    	System.out.println(objectMetadata.getETag());
    }
  

• 下载文件:

    /**
     * 下载object 
  	 *	//断点续传
     *	GetObjectRequest rangeObjectRequest = new GetObjectRequest("test11", "/test/file.txt");
     *	rangeObjectRequest.setRange(0, 10); // retrieve 1st 10 bytes.
     *	S3Object objectPortion = conn.getObject(rangeObjectRequest);
     *			
     *	InputStream objectData = objectPortion.getObjectContent();
     *	// "Process the objectData stream.
     *	objectData.close();
     */
    public void getObject(){
    	//SDKGlobalConfiguration.setGlobalTimeOffset(-60*5);//自定义全局超时时间5分钟以后(可选项)
    	S3Object s3Obj = conn.getObject("test11", "/test/file.txt");
    	InputStream in = s3Obj.getObjectContent();
    	byte[] buf = new byte[1024];
    	OutputStream out = null;
    	try {
    		out = new FileOutputStream(new File("dage1.txt"));
    		int count;
    		while( (count = in.read(buf)) != -1)
    		{
    		   if( Thread.interrupted() )
    		   {
    		       throw new InterruptedException();
    		   }
    		   out.write(buf, 0, count);
    		}
    	} catch (FileNotFoundException e) {
    		e.printStackTrace();
    	} catch (IOException e) {
    		e.printStackTrace();
    	} catch (InterruptedException e) {
    		e.printStackTrace();
    	}finally{
    		//SDKGlobalConfiguration.setGlobalTimeOffset(0);//还原超时时间
    		try {
    			out.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    		try {
    			in.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    }
  

• 上传文件:

    /**
     * 上传文件
     */
    public void putObject(){
    	PutObjectResult putObjectResult = conn.putObject("bucket名称",
    										"文件上传路径", 
    										new File("本地文件"));
    	System.out.println(putObjectResult);
    }
  

• 上传文件(自定义请求头):

    /**
     * 上传文件 自定义请求头
     */
    public void putObjectWithCustomRequestHeader(){
    	//自定义请求头k-v
    	Map<String, String> requestHeader = new HashMap<String, String>();
    	requestHeader.put("x-sina-additional-indexed-key", "stream/test111.txt");
    	PutObjectResult putObjectResult = conn.putObject("bucket名称", "ssk/a/", 
    										              new File("本地文件"), requestHeader);
    	System.out.println(putObjectResult);//服务器响应结果
    }
  

• 秒传文件:

    /**
     * 秒传
     */
    public void putObjectRelax(){
    	conn.putObjectRelax("bucket名称","文件上传路径","被秒传文件的sina_sha1值",被秒传文件的长度);
    }
  

• 复制文件:

    /**
     * 拷贝object
     */
    public void copyObject(){
    	conn.copyObject("源bucket名称", "源文件路径", "目标bucket名称", "目标文件路径");
    }
  

• 修改文件meta信息:

    /**
     * 设置object metadata
     */
    @SuppressWarnings("serial")
    public void putObjectMeta(){
    	ObjectMetadata objectMetadata = new ObjectMetadata();
    	objectMetadata.setUserMetadata(new HashMap<String,String>(){{
    				put("aaa","1111");
    				put("bbb","222");
    				put("ccc","3333");
    				put("asdfdsaf","vvvvvv");
    	}});
    	conn.setObjectMetadata("bucket名称", "文件路径", objectMetadata);
    }
  

• 删除文件:

    /**
     * 删除Object
     */
    public void deleteObject(){
    	conn.deleteObject("bucket名称", "文件路径");
    }		
  

• 获取文件acl信息:

    /**
     * 获取object acl
     */
    public void getObjectAcl(){
    	AccessControlList acl = conn.getObjectAcl("bucket名称", "文件路径");
    	System.out.println(acl);
    }
  

• 修改文件acl信息:

    /**
     * 设置object acl
     */
    public void putObjectAcl(){
    	AccessControlList acl = new AccessControlList();
    	acl.grantPermissions(UserIdGrantee.CANONICAL, Permission.Read,Permission.ReadAcp);
    	acl.grantPermissions(UserIdGrantee.ANONYMOUSE,Permission.ReadAcp,Permission.Write,Permission.WriteAcp);
    	acl.grantPermissions(new UserIdGrantee("UserId"), Permission.Read,Permission.ReadAcp,Permission.Write,Permission.WriteAcp);
    	
    	conn.setObjectAcl("bucket名称", "文件路径", acl);
    }
  

• 分片上传文件:

    /**
     * 分片上传文件
     * @throws Exception
     */
    public void multipartsUpload() throws Exception{
    	//初始化上传任务
    	InitiateMultipartUploadResult initiateMultipartUploadResult = conn.initiateMultipartUpload("bucket名称", "文件路径");
    	
    	if(initiateMultipartUploadResult!=null){
    		//分片上传
    		List<PartETag> partETags = null;
    		PutObjectRequest putObjectRequest = new PutObjectRequest(initiateMultipartUploadResult.getBucketName(),
    				initiateMultipartUploadResult.getKey(), new File("本地待上传文件"));
    		 try {
    			long optimalPartSize = 5 * 1024 * 1024; //分片大小5M
                UploadPartRequestFactory requestFactory = new UploadPartRequestFactory(putObjectRequest, initiateMultipartUploadResult.getUploadId()
                		, optimalPartSize);
    
                partETags = uploadPartsInSeries(requestFactory);
            } catch (Exception e) {
                throw e;
            } finally {
                if (putObjectRequest.getInputStream() != null) {
    				try {
    					putObjectRequest.getInputStream().close();
    				} catch (Exception e) {
    					throw e;
    				}
                }
            }
    	
    		 //分片列表
    		PartListing partList = conn.listParts(new ListPartsRequest(initiateMultipartUploadResult.getBucketName(),
    										initiateMultipartUploadResult.getKey(),
    										initiateMultipartUploadResult.getUploadId()));
    		System.out.println("已上传的文件分片列表:\n"+partList);
    		
    		//分片合并，完成上传
    		ObjectMetadata objectMetadata = conn.completeMultipartUpload(new CompleteMultipartUploadRequest(putObjectRequest.getBucketName(),
    				putObjectRequest.getKey(), initiateMultipartUploadResult.getUploadId(), partETags));
    		
    		System.out.println("合并文件结果:\n");
    		System.out.println(objectMetadata.getUserMetadata());
    		System.out.println(objectMetadata.getContentLength());
    		System.out.println(objectMetadata.getRawMetadata());
    		System.out.println(objectMetadata.getETag());
    	}
    	
    }
  

• 高级工具 TransferManager

    /* TransferManager */
    public void putObjectByTransferManager(){
    	TransferManager tf = new TransferManager(conn);
    	Upload myUpload = tf.upload("bucket名称", "文件路径", new File("待上传文件本地路径"));
    	
    	// You can poll your transfer's status to check its progress
    	if (myUpload.isDone() == false) {
    		System.out.println("Transfer: " + myUpload.getDescription());
    		System.out.println("  - State: " + myUpload.getState());
    		System.out.println("  - Progress: "
    				+ myUpload.getProgress().getBytesTransferred());
    	}
  
    	// Transfers also allow you to set a <code>ProgressListener</code> to
    	// receive
    	// asynchronous notifications about your transfer's progress.
    	myUpload.addProgressListener(new ProgressListener(){
    		@Override
    		public void progressChanged(ProgressEvent progressEvent) {
    			System.out.println(progressEvent);
    		}
    	});
  
    	// Or you can block the current thread and wait for your transfer to
    	// to complete. If the transfer fails, this method will throw an
    	// SCSClientException or SCSServiceException detailing the reason.
    	try {
    		myUpload.waitForCompletion();
    	} catch (SCSServiceException e) {
    		e.printStackTrace();
    	} catch (SCSClientException e) {
    		e.printStackTrace();
    	} catch (InterruptedException e) {
    		e.printStackTrace();
    	}
    	
    }
  

###3.URL签名工具:

• 含签名信息URL:

    /* 生成url*/
    public void generateUrl(){
    	Date expiration = new Date();		//过期时间
        long epochMillis = expiration.getTime();
        epochMillis += 60*5*1000;
        expiration = new Date(epochMillis);   
        
    	URL presignedUrl = conn.generatePresignedUrl("bucket名称", "文件路径", expiration, false);
    	System.out.println(presignedUrl);
    }