我正在尝试从服务器注销。但它返回“0”响应代码,但有此异常。我正在使用 GET 动词来执行此操作。
日志猫
10-17 14:54:13.261: W/System.err(868): java.io.IOException: Received authentication challenge is null
10-17 14:54:13.284: W/System.err(868): at libcore.net.http.HttpURLConnectionImpl.processAuthHeader(HttpURLConnectionImpl.java:397)
10-17 14:54:13.284: W/System.err(868): at libcore.net.http.HttpURLConnectionImpl.processResponseHeaders(HttpURLConnectionImpl.java:345)
10-17 14:54:13.304: W/System.err(868): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:276)
10-17 14:54:13.324: W/System.err(868): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:479)
10-17 14:54:13.324: W/System.err(868): at com.remote.synchronizer.haris.CustomHttpClient.executeGet(CustomHttpClient.java:131)
10-17 14:54:13.354: W/System.err(868): at com.remote.synchronizer.haris.OptionsActivity$1$3$1.run(OptionsActivity.java:87)
10-17 14:54:13.364: W/System.err(868): at android.os.Handler.handleCallback(Handler.java:605)
10-17 14:54:13.384: W/System.err(868): at android.os.Handler.dispatchMessage(Handler.java:92)
10-17 14:54:13.384: W/System.err(868): at android.os.Looper.loop(Looper.java:137)
10-17 14:54:13.404: W/System.err(868): at android.app.ActivityThread.main(ActivityThread.java:4424)
10-17 14:54:13.424: W/System.err(868): at java.lang.reflect.Method.invokeNative(Native Method)
10-17 14:54:13.424: W/System.err(868): at java.lang.reflect.Method.invoke(Method.java:511)
10-17 14:54:13.454: W/System.err(868): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-17 14:54:13.474: W/System.err(868): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-17 14:54:13.474: W/System.err(868): at dalvik.system.NativeStart.main(Native Method)
10-17 14:54:13.484: E/HTTP Response(868): java.io.IOException: Received authentication challenge is null
CustomHttpClient.java
public class CustomHttpClient {
static HttpClient client = new DefaultHttpClient();
static HttpURLConnection connection = null;
public static int executePost(String url, String postParameters)
{
int response=0;
OutputStream output = null;
try
{
connection = (HttpURLConnection)new URL(url).openConnection();
System.setProperty("http.keepAlive", "false");
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Accept-Charset", "UTF-8");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
connection.connect();
output = connection.getOutputStream();
output.write(postParameters.getBytes("UTF-8"));
response=connection.getResponseCode();
}
catch(Exception e)
{
e.printStackTrace();
Log.e("HTTP Response", e.toString());
}
finally {
if(connection != null) {
// connection.disconnect();
if (output != null)
try { output.close(); }
catch (IOException logOrIgnore) {}
}
}
return response;
}
public static int executeGet(String url)
{
int response=0;
//HttpURLConnection connection = null;
try
{
connection = (HttpURLConnection) new URL(url).openConnection();
System.setProperty("http.keepAlive", "false");
//connection.setRequestProperty("Accept-Charset", "UTF-8");
connection.setDoInput(true);
connection.setRequestMethod("GET");
connection.connect();
response=connection.getResponseCode();
}
catch(Exception e)
{
e.printStackTrace();
Log.e("HTTP Response", e.toString());
}
finally {
if(connection != null) {
// connection.disconnect();
}
}
return response;
}
}
在此之前,我在 Gingerbird 2.3 中使用 DefaultHTTPClient,它运行良好,但在 ICS DefaultHTTPClient 中不起作用,所以我需要使用 HttpURLConnection。POST 动词工作正常。