使用REST API的Microsoft Azure文件存儲的代碼示例（JAVA）

Question

我需要使用JAVA使用REST API獲取Azure文件存儲中文件共享中可用文件的內容。有官方文件可用，但我感到困惑，因爲沒有明確的解釋。所以，如果有人能夠提供樣品，那麼它對我來說真的很有幫助。

Answer 1

我在正確生成驗證字符串時遇到了問題，它給出了Error：403，Message：Forbidden。但使用下面的代碼，我成功地設法做到了這一點。

public class FileStorageServiceWithRest { 
private static final String account = "<your_account_name>"; 
private static final String key = "<your_access_key>"; 

public static void main(String args[]) throws Exception{ 
    String urlString = "http://" + account + ".file.core.windows.net/myshare/<your_file_name>"; 
    HttpURLConnection connection = (HttpURLConnection)(new URL(urlString)).openConnection(); 
    getFileRequest(connection, account, key); 
    connection.connect(); 
    System.out.println("Response message : "+connection.getResponseMessage()); 
    System.out.println("Response code : "+connection.getResponseCode()); 

    BufferedReader br = null; 
    if(connection.getResponseCode() != 200){ 
     br = new BufferedReader(new InputStreamReader((connection.getErrorStream()))); 
    }else{ 
     br = new BufferedReader(new InputStreamReader((connection.getInputStream()))); 
    } 
    System.out.println("Response body : "+br.readLine()); 
} 

public static void getFileRequest(HttpURLConnection request, String account, String key) throws Exception{ 
    SimpleDateFormat fmt = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss"); 
    fmt.setTimeZone(TimeZone.getTimeZone("GMT")); 
    String date = fmt.format(Calendar.getInstance().getTime()) + " GMT"; 
    String stringToSign = "GET\n" 
      + "\n" // content encoding 
      + "\n" // content language 
      + "\n" // content length 
      + "\n" // content md5 
      + "\n" // content type 
      + "\n" // date 
      + "\n" // if modified since 
      + "\n" // if match 
      + "\n" // if none match 
      + "\n" // if unmodified since 
      + "\n" // range 
      + "x-ms-date:" + date + "\nx-ms-version:2014-02-14\n" //headers 
      + "/"+account + request.getURL().getPath(); // resources 
    System.out.println("stringToSign : "+stringToSign); 
    String auth = getAuthenticationString(stringToSign); 
    request.setRequestMethod("GET"); 
    request.setRequestProperty("x-ms-date", date); 
    request.setRequestProperty("x-ms-version", "2014-02-14"); 
    request.setRequestProperty("Authorization", auth); 
} 

private static String getAuthenticationString(String stringToSign) throws Exception{ 
    Mac mac = Mac.getInstance("HmacSHA256"); 
    mac.init(new SecretKeySpec(Base64.decode(key), "HmacSHA256")); 
    String authKey = new String(Base64.encode(mac.doFinal(stringToSign.getBytes("UTF-8")))); 
    String auth = "SharedKey " + account + ":" + authKey; 
    return auth; 
}}