这是我的下载代码：
File file = new File(dir, fileName);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(downloadListHttpGet
.get(index));
InputStream input = response.getEntity().getContent();
OutputStream output = new FileOutputStream(
memoryDirectory + fileName);
byte data[] = new byte[1024];
int count;
while ((count = input.read(data)) != -1) {
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
这段代码可以正常工作，但是在经过身份验证的服务器上，从下载开始将近40秒钟后，出现“ ECONNRESET（对等连接重置）”异常。我认为它发生在“ input.read（data）”部分。我搜了很多！！！有人说这是服务器故障。可能是事实，但我必须在客户端解决此问题。我试图在“ catch”块中运行新线程，但是有一个问题：发生异常时，它不会立即进入“ catch”块，大约需要2分钟。我尝试了以下解决方案：
Getting "SocketException : Connection reset by peer" in Android
但这不起作用。
最佳答案
尝试使用此类new DefaultHttpClient()代替getHttpClient()：
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
public class MySSLSocketFactory extends SSLSocketFactory {
SSLContext sslContext = SSLContext.getInstance("TLS");
public static int ConnectionTimeoutInSeconds = 45;
public static boolean DisableSSLcertificateCheck = true;
public MySSLSocketFactory(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
super(truststore);
TrustManager tm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sslContext.init(null, new TrustManager[] { tm }, null);
}
@Override
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
}
@Override
public Socket createSocket() throws IOException {
return sslContext.getSocketFactory().createSocket();
}
public static HttpClient getHttpClient() {
try {
HttpParams params = new BasicHttpParams();
// Turn off stale checking. Our connections break all the time anyway,
// and it's not worth it to pay the penalty of checking every time.
HttpConnectionParams.setStaleCheckingEnabled(params, false);
// Default connection and socket timeout of 20 seconds. Tweak to taste.
HttpConnectionParams.setConnectionTimeout(params, ConnectionTimeoutInSeconds * 1000);
HttpConnectionParams.setSoTimeout(params, ConnectionTimeoutInSeconds * 1000);
HttpConnectionParams.setSocketBufferSize(params, 8192);
// Don't handle redirects -- return them to the caller. Our code
// often wants to re-POST after a redirect, which we must do ourselves.
HttpClientParams.setRedirecting(params, false);
SSLSocketFactory mySSLSocketFactory = SSLSocketFactory.getSocketFactory();
// disable ssl check on debug
if (DisableSSLcertificateCheck ) {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null, null);
mySSLSocketFactory = new MySSLSocketFactory(trustStore);
HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
mySSLSocketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
}
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
schemeRegistry.register(new Scheme("https", mySSLSocketFactory, 443));
ClientConnectionManager manager = new ThreadSafeClientConnManager(params, schemeRegistry);
return new DefaultHttpClient(manager, params);
} catch (Exception e) {
return new DefaultHttpClient();
}
}
}
它处理SSL，使您可以忽略SSL证书，并允许您手动更改超时。
我将从“ disable ssl check”开始，并将超时设置为90（秒）。
您可能尝试进行身份验证的另一种方法与Bing搜索API身份验证的工作方式相同（您需要下载并包含commons-codec-1.9.jar）：
public class SearchAsyncTask extends AsyncTask<Void, Void, Void> {
private final String TAG = getClass().getName();
@Override
protected Void doInBackground(Void... params) {
try {
String bingUrl = "https://api.datamarket.azure.com/Bing/SearchWeb/v1/Web?Query=pinhassi";
String accountKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
byte[] accountKeyBytes = Base64.encodeBase64((accountKey + ":" + accountKey).getBytes());
String accountKeyEnc = new String(accountKeyBytes);
URL url = null;
url = new URL(bingUrl);
URLConnection urlConnection = url.openConnection();
urlConnection.setRequestProperty("Authorization", "Basic " + accountKeyEnc);
InputStream response = urlConnection.getInputStream();
String res = readStream(response);
Log.d(TAG, res);
//conn.disconnect();
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, e.getMessage());
}
return null;
}
private String readStream(InputStream in) {
BufferedReader reader = null;
StringBuilder sb = new StringBuilder();
try {
reader = new BufferedReader(new InputStreamReader(in));
String line = "";
while ((line = reader.readLine()) != null) {
//System.out.println(line);
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sb.toString();
}
}