Android 4.3 HTTPUrlConnection + Basic Auth - 未發現身份驗證質詢

Question

我在HttpURLConnection上使用基本身份驗證來獲取一些數據。 直到4.2，這工作得很好，但在Nexus 4上有4.3，我得到一個java.io.IOException：查詢響應代碼時沒有發現身份驗證挑戰 。 奇怪的是，當我在4.3模擬器上運行相同的代碼時，問題不會發生。

我嘗試了這里提到的解決方案，但沒有運氣： 使用HttpURLConnection在Android Jelly Bean 4.1上的HTTP基本身份驗證問題

碼：

URL url = new URL(urlString);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

urlConnection.setRequestMethod("GET");
urlConnection.setConnectTimeout(5000);
urlConnection.setReadTimeout(2000000); 

String userpass = user + ":" + pass;
String basicAuth;

//fix from SO
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN){
    basicAuth = "Basic " + new String(Base64.encodeToString(userpass.getBytes(), Base64.NO_WRAP));
}
else {
 //Base64: http://iharder.net/base64
    basicAuth = "Basic " + new String(com.foo.bar.Base64.encodeBytes(userpass.getBytes()));
}
urlConnection.setRequestProperty ("Authorization", basicAuth);

//throws Exception
urlConnection.getResponseCode();

跟蹤：

09-01 21:40:13.501: W/System.err(23055): java.io.IOException: No authentication challenges found
09-01 21:40:13.501: W/System.err(23055):    at libcore.net.http.HttpURLConnectionImpl.getAuthorizationCredentials(HttpURLConnectionImpl.java:438)
09-01 21:40:13.501: W/System.err(23055):    at libcore.net.http.HttpURLConnectionImpl.processAuthHeader(HttpURLConnectionImpl.java:418)
09-01 21:40:13.501: W/System.err(23055):    at libcore.net.http.HttpURLConnectionImpl.processResponseHeaders(HttpURLConnectionImpl.java:367)
09-01 21:40:13.501: W/System.err(23055):    at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:301)
09-01 21:40:13.501: W/System.err(23055):    at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:497)
09-01 21:40:13.501: W/System.err(23055):    at com.foo.bar.InputStreamHelper.getUrlConnectionFromUrl(InputStreamHelper.java:65)

Answer 1

通過將構建目標提升到API級別18來解決該問題