Android-SDK之如何实现上传文件（二）?

Append Object 追加上传




Append Object以追加写的方式上传文件。通过Append Object操作创建的Object类型为Appendable Object，而通过Put Object上传的Object是Normal Object。

1. AppendObjectRequest append = new AppendObjectRequest(testBucket, testObject, uploadFilePath);
3. ObjectMetadata metadata = new ObjectMetadata();
4. metadata.setContentType("application/octet-stream");
5. append.setMetadata(metadata);
7. // 设置追加位置
8. append.setPosition(0);
10. append.setProgressCallback(new OSSProgressCallback<AppendObjectRequest>() {
11.     @Override
12.     public void onProgress(AppendObjectRequest request, long currentSize, long totalSize) {
13.         Log.d("AppendObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
14.     }
15. });
17. OSSAsyncTask task = oss.asyncAppendObject(append, new OSSCompletedCallback<AppendObjectRequest, AppendObjectResult>() {
18.     @Override
19.     public void onSuccess(AppendObjectRequest request, AppendObjectResult result) {
20.         Log.d("AppendObject", "AppendSuccess");
21.         Log.d("NextPosition", "" + result.getNextPosition());
22.     }
24.     @Override
25.     public void onFailure(AppendObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
26.         // 异常处理
27.     }
28. });

• 
  当用户创建一个Appendable Object时，追加位置设为0。
• 
  当对Appendable Object进行内容追加时，追加位置设为Object当前长度。有两种方式获取该Object长度：通过上传追加后的返回内容获取。
• 通过head object获取文件长度。

1. PutObjectRequest put = new PutObjectRequest(testBucket, testObject, uploadFilePath);
3. put.setCallbackParam(new HashMap<String, String>() {
4.     {
5.         put("callbackUrl", "110.75.82.106/callback");
6.         put("callbackHost", "oss-cn-hangzhou.aliyuncs.com");
7.         put("callbackBodyType", "application/json");
8.         put("callbackBody", "{\"mimeType\":${mimeType},\"size\":${size}}");
9.     }
10. });
12. OSSAsyncTask task = oss.asyncPutObject(put, new OSSCompletedCallback<PutObjectRequest, PutObjectResult>() {
13.     @Override
14.     public void onSuccess(PutObjectRequest request, PutObjectResult result) {
15.         Log.d("PutObject", "UploadSuccess");
17.         // 只有设置了servercallback，这个值才有数据
18.         String serverCallbackReturnJson = result.getServerCallbackReturnBody();
20.         Log.d("servercallback", serverCallbackReturnJson);
21.     }
23.     @Override
24.     public void onFailure(PutObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
25.         // 异常处理
26.     }
27. });

1. put.setCallbackParam(new HashMap<String, String>() {
2.     {
3.         put("callbackUrl", "http://182.92.192.125/leibin/notify.php");
4.         put("callbackHost", "oss-cn-hangzhou.aliyuncs.com");
5.         put("callbackBodyType", "application/json");
6.         put("callbackBody", "{\"object\":${object},\"size\":${size},\"my_var1\":${x:var1},\"my_var2\":${x:var2}}");
7.     }
8. });
10. put.setCallbackVars(new HashMap<String, String>() {
11.     {
12.         put("x:var1", "value1");
13.         put("x:var2", "value2");
14.     }
15. });