Fastdfs 断点续传
采用追加方式：
1 public String[] uploadBreakpointFile(String group_name, String fileName, NameValuePair[] meta) { 2 String[] results = null; 3 File file = new File(fileName); 4 long originalFileSize = file.length(); 5 6 byte[] file_buff; 7 8 //NameValuePair[] vars = new NameValuePair[]{new NameValuePair("fileName", fileName), new NameValuePair("fileSize", String.valueOf(originalFileSize))}; 9 int number = (int) (originalFileSize / defaultSize), leftLength; 10 number = originalFileSize % defaultSize == 0 ? number : number + 1; 11 byte[] bytes; 12 try { 13 InputStream input = new FileInputStream(file); 14 file_buff = new byte[input.available()]; 15 input.read(file_buff); 16 17 if (originalFileSize > defaultSize) { 18 19 // 如果文件块大，则实现分块上传，需要准备一个空的文件 20 21 for (int i = 0; i < number; i++) { 22 if (originalFileSize - (i) * defaultSize < defaultSize) { 23 leftLength = (int) (originalFileSize - (i) * defaultSize); 24 leftLength = leftLength < 0 ? (int) originalFileSize : leftLength; 25 bytes = new byte[leftLength]; 26 if (i == 0) { 27 results = storageClient.upload_appender_file(group_name, bytes, 0, leftLength, FilenameUtils.getExtension(fileName), meta); 28 } else { 29 /*采用追加的方式*/ 30 storageClient.append_file(results[0], results[1], bytes, 0, leftLength); 31 } 32 } else { 33 bytes = new byte[(int) defaultSize]; 34 leftLength = (int) defaultSize; 35 if (i == 0) { 36 results = storageClient.upload_appender_file(group_name, bytes, 0, leftLength, FilenameUtils.getExtension(fileName), meta); 37 } else { 38 /*采用追加的方式*/ 39 storageClient.append_file(results[0], results[1], bytes, 0, leftLength); 40 } 41 } 42 } 43 //写入内容 44 storageClient.modify_file(results[0], results[1], 0, file_buff, 0, file_buff.length); 45 } else { 46 // 如果文件比默认的文件要小，则直接上传 47 48 results = storageClient.upload_file(group_name, file_buff, FilenameUtils.getExtension(fileName), meta); 49 50 } 51 } catch (Exception e) { 52 e.printStackTrace(); 53 } 54 55 return results; 56 57 }
