我试图在 java 中重新创建这个 C# 代码来调用我的 web api make i ASP.NET

Question

我写了一个 Asp.net web APi 2，我用 HMAC 身份验证保护它，我可以用这个代码用 C# 查询它

class Program
{
    private const string _alg = "HmacSHA256";
    private const string _salt = "hidden";

    static void Main(string[] args)
    {

        RunAsync().Wait();

    }

    private static async Task RunAsync()
    {
        Console.WriteLine("Calling the back-end API");
        string apiBaseAddress = "http://myapi.com/";
        CustomDelegatingHandler customDelegatingHandler = new CustomDelegatingHandler();

        HttpClient client = HttpClientFactory.Create(customDelegatingHandler);


        HttpResponseMessage response = await client.GetAsync(apiBaseAddress + "api/students/186");

        if (response.IsSuccessStatusCode)
        {
            string responseString = await response.Content.ReadAsStringAsync();
            Console.WriteLine(responseString);
            Console.WriteLine("HTTP Status: {0}, Reason {1}. Press ENTER to exit", response.StatusCode, response.ReasonPhrase);
        }
        else
        {
            Console.WriteLine("Failed to call the API. Http Status: {0}, Reason {1}. Pess ENTER to exit", response.StatusCode, response.ReasonPhrase);
        }
        Console.ReadLine();
    }
}


public class CustomDelegatingHandler : DelegatingHandler
{
    private string APIId = ConfigurationManager.AppSettings["ApiId"];
    private string APIKey = ConfigurationManager.AppSettings["ApiKey"];

    protected async override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken )
    {
        HttpResponseMessage response = null;
        string requestContentBase64String = string.Empty;
        string requestUri = HttpUtility.UrlEncode(request.RequestUri.AbsoluteUri.ToLower());
        string reqestHttpMethod = request.Method.Method;

        DateTime epochStart = new DateTime(1970, 01, 01, 0, 0, 0, 0, DateTimeKind.Utc);
        TimeSpan timeSpan = DateTime.UtcNow - epochStart;
        string requestTimeStamp = Convert.ToUInt64(timeSpan.TotalSeconds).ToString();

        string nonce = Guid.NewGuid().ToString("N");

        if(request.Content != null)
        {
            byte[] content = await request.Content.ReadAsByteArrayAsync();
            MD5 md5 = MD5.Create();
            byte[] requestContentHash = md5.ComputeHash(content);
            requestContentBase64String = Convert.ToBase64String(requestContentHash);
        }

        string signatureRawData = string.Format("{0}{1}{2}{3}{4}{5}", APIId, reqestHttpMethod, requestUri, requestTimeStamp, nonce, requestContentBase64String);

        var secretKeyByteArray = Convert.FromBase64String(APIKey);
        byte[] signature = Encoding.UTF8.GetBytes(signatureRawData);

        using (HMACSHA256 hmac = new HMACSHA256(secretKeyByteArray))
        {
            byte[] signatureBytes = hmac.ComputeHash(signature);
            string requestSignatureBase64String = Convert.ToBase64String(signatureBytes);

            request.Headers.Authorization = new AuthenticationHeaderValue("amx", string.Format("{0}:{1}:{2}:{3}", APIId, requestSignatureBase64String, nonce, requestTimeStamp));
        }
        response = await base.SendAsync(request, cancellationToken);
        return response;
    }
}

然后我尝试将它重写为 java，但我的网络服务返回 401，我无法弄清楚它在哪里错了，我能做什么？

String request = null;
String result = "";
URL url;
String requestContentBase64String = "";
HttpURLConnection urlConnection = null;
try {
    url = new URL("http://mysapi.com");
    urlConnection = (HttpURLConnection) url.openConnection();
    urlConnection.setRequestMethod("GET");

    Date epochStart = new Date(0);

    String requestTimeStamp = "" + ((new Date().getTime() - epochStart.getTime()) / 1000);
    String nonce = java.util.UUID.randomUUID().toString().replace("-", "");

    if (request != null) {
        byte[] content = request.getBytes();
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] requestContentHash = md.digest(content);
        requestContentBase64String = Base64.getUrlEncoder().encodeToString(requestContentHash);
    }
    String signatureRawData = String.format("%s%s%s%s%s%s", ApiId, urlConnection.getRequestMethod(),
            url.toString().toLowerCase(), requestTimeStamp, nonce, requestContentBase64String);

    byte[] secretKeyByteArray = ApiKey.getBytes();
    byte[] signature = signatureRawData.getBytes("UTF-8");
    Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
    SecretKeySpec secret_key = new SecretKeySpec(secretKeyByteArray, "HmacSHA256");
    sha256_HMAC.init(secret_key);
    byte[] signatureBytes = sha256_HMAC.doFinal(signature);
    String requestSignatureBase64String = Base64.getEncoder().encodeToString(signatureBytes);

    String header = String.format("amx %s:%s:%s:%s", ApiId, requestSignatureBase64String, nonce,
            requestTimeStamp);
    urlConnection.setRequestProperty("Authorization", header);

    InputStream in = urlConnection.getInputStream();
    InputStreamReader reader = new InputStreamReader(in);

    int data = reader.read();
    while (data != -1) {
        char current = (char) data;
        result += current;
        data = reader.read();
    }
    System.out.println(result);

} 
catch (MalformedURLException e)
{
    e.printStackTrace();
} 
catch (IOException e) 
{
    e.printStackTrace();
}
catch (NoSuchAlgorithmException e) 
{
    e.printStackTrace();
} 
catch (InvalidKeyException e) 
{
    e.printStackTrace();
}
catch (Exception e) 
{

    e.printStackTrace();
}

Answer 1

您的请求为空。

使用此代码，它对我有用。

    String request = null;
    String result = "";
    String ApiId = "4d53bce03ec34c0a911";
    String ApiKey = "A93reRTUJHsCuQSHR+L3GxqOJ";
    String json = "";//"{\"key\":1}";
    json = json + "{Password :'Test@123' }";

    URL url;
    String requestContentBase64String = "";
    HttpURLConnection urlConnection = null;
    try {
        //url = new URL("http://mac3uat.jetprivilege.com/api/m1/v1/");
        url = new URL("http://localhost:43326/api/m1/v1/EnrolAccount/IsPasswordValid");

        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("POST");
        urlConnection.setConnectTimeout(5000);
        urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        //conn.setRequestMethod("POST");


        Date epochStart = new Date(0);

        //String requestTimeStamp = "" + ((new Date().getTime() - epochStart.getTime()) / 1000);
        String requestTimeStamp = "" + ((new Date().getTime() - epochStart.getTime()) / 1000);
        //String requestTimeStamp = "1487513216";

        String nonce = java.util.UUID.randomUUID().toString().replace("-", "");

        if (json != null) {
            byte[] content = json.getBytes();
            MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] requestContentHash = md.digest(content);
            requestContentBase64String = Base64.getUrlEncoder().encodeToString(requestContentHash);
        }

你的其余代码是正确的。