Android 4.3 HTTPUrlConnection + 基本身份验证 - 未发现身份验证挑战

Question

我在 HttpURLConnection 上使用基本身份验证来获取一些数据。直到 4.2 这工作得很好，但在 Nexus 4 上使用 4.3 我在查询响应代码时得到 java.io.IOException: No authentication challenge found。奇怪的是，当我在 4.3 模拟器上运行相同的代码时，并没有出现问题。

我尝试了这里提到的解决方案，但没有运气：HTTP Basic Authentication issue on Android Jelly Bean 4.1 using HttpURLConnection

代码：

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();

追踪：

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

通过将构建目标提升到 API 级别 18 解决了问题