【发布时间】:2011-08-10 08:35:59
【问题描述】:
我正在尝试在 Android 应用程序中使用 http 协议访问 Twitter 帐户的资源。 Twitter 使用开放式身份验证标准 OAuth 进行身份验证,因此我遵循 https://dev.twitter.com/docs/auth/oauth#Overview 中的示例。 我的问题是: 我想获取请求令牌,但是当我向端点 https://api.twitter.com/oauth/request_token 发出请求时,响应是“无法验证 oauth 签名和令牌”。 我的代码:
签名步骤
时间戳和随机数
oauthTimestamp = String.valueOf(new Date().getTime());
oauthNonce = Base64.encodeToString(oauthTimestamp.getBytes(),Base64.DEFAULT);
//remove /n at the end of the string
oauthNonce = oauthNonce.substring(0, oauthNonce.length() - 1);
签名基本字符串
String signatureBaseString =
"POST"
+ "&"
+ URLEncoder.encode("https://api.twitter.com/oauth/request_token")
+ "&"
+ URLEncoder.encode("oauth_callback=" + redirectUrl)
+ URLEncoder.encode("&" + "oauth_consumer_key=" + consumerKey)
+ URLEncoder.encode("&" + "oauth_nonce=" + oauthNonce)
+ URLEncoder.encode("&" + "oauth_signature_method=" + "HMAC-SHA1")
+ URLEncoder.encode("&" + "oauth_timestamp=" + oauthTimestamp)
+ URLEncoder.encode("&" + "oauth_version=" + "1.0");
签名调用
signature = getSignatureToken(applicationSecret, signatureBaseString, "HmacSHA1");
签名方法
private String getSignatureToken(String consumerSecret, String baseString, String algotithm) {
byte[] keyBytes = (consumerSecret+"&").getBytes();
SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, algotithm);
Mac mac;
String res = null;
try {
mac = Mac.getInstance(algotithm);
mac.init(secretKeySpec);
byte[] rawHmac = mac.doFinal((baseString).getBytes());
res = android.util.Base64.encodeToString(rawHmac, android.util.Base64.DEFAULT);
res = res.substring(0, res.length() - 1);
System.out.println("MAC : " + res);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
}
return res;
}
请求令牌步骤
HttpResponse response;
HttpPost authorization = new HttpPost("https://api.twitter.com/oauth/request_token");
final String headerValue =
"OAuth " +
"oauth_nonce=\""+oauthNonce+"\", " +
"oauth_callback=\""+redirectUrl+"\", " +
"oauth_signature_method=\"HMAC-SHA1\", " +
"oauth_timestamp=\""+oauthTimestamp+"\", " +
"oauth_consumer_key=\""+consumerKey+"\", " +
"oauth_signature=\""+URLEncoder.encode(signature)+"\", " +
"oauth_version=\"1.0\"";
authorization.addHeader("Authorization", headerValue);
response = this.httpClient.execute(authorization);
System.out.println(EntityUtils.toString(response.getEntity()));
response = this.httpClient.execute(authorization) 给我 HTTP/1.1 401 Unauthorized
有什么想法吗?
谢谢
【问题讨论】:
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我面临同样的问题,但无法解决。你能告诉我你是怎么解决的吗?