[英]Download with Volley gives error: Unexpected response code 200
我正在嘗試從服務器下載文件。 如果我通過瀏覽器發出此請求,則會得到所需的文件,但是當我使用volley時,我在使用setRetryPolicy后首先得到了com.android.volley.TimeoutError。
BasicNetwork.performRequest: Unexpected response code 200
這是我的課進行下載:
public class DefexConnection implements Response.Listener<byte[]>, Response.ErrorListener {
private Context ctx;
private DefexDownload download;
public DefexConnection(Context ctx){
this.ctx = ctx;
}
public void download(String link, final HashMap<String, String> params){
DefexDownload req = new DefexDownload(Request.Method.GET, link, DefexConnection.this, DefexConnection.this, params);
req.setRetryPolicy(new DefaultRetryPolicy( 500000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
RequestQueue queue = Volley.newRequestQueue(this.ctx, new HurlStack(null, getSocketFactory()));
queue.add(req);
}
private SSLSocketFactory getSocketFactory() {
CertificateFactory cf = null;
try {
cf = CertificateFactory.getInstance("X.509");
InputStream caInput = ctx.getResources().openRawResource(R.raw.comodoroca);
Certificate ca;
try {
ca = cf.generateCertificate(caInput);
Log.e("CERT", "ca=" + ((X509Certificate) ca).getSubjectDN());
} finally {
caInput.close();
}
String keyStoreType = KeyStore.getDefaultType();
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
keyStore.load(null, null);
keyStore.setCertificateEntry("ca", ca);
String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
tmf.init(keyStore);
HostnameVerifier hostnameVerifier = new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
Log.d("CipherUsed", session.getCipherSuite());
return hostname.compareTo("www.defexsecurity.com")==0;
}
};
HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
SSLContext context = null;
context = SSLContext.getInstance("TLS");
context.init(null, tmf.getTrustManagers(), null);
HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());
SSLSocketFactory sf = context.getSocketFactory();
return sf;
} catch (CertificateException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyStoreException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
return null;
}
@Override
public void onResponse(byte[] response) {
HashMap<String, Object> map = new HashMap<String, Object>();
int count;
if (response!=null) {
String content = download.responseHeaders.get("Content-Disposition").toString();
StringTokenizer st = new StringTokenizer(content, "=");
String[] arrTag = st.toArray();
String filename = arrTag[1];
filename = filename.replace(":", ".");
Log.d("DEBUG::RESUME FILE NAME", filename);
try{
long lenghtOfFile = response.length;
//covert reponse to input stream
InputStream input = new ByteArrayInputStream(response);
File path = Environment.getExternalStorageDirectory();
File file = new File(path, filename);
map.put("resume_path", file.toString());
BufferedOutputStream output = new BufferedOutputStream(new FileOutputStream(file));
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
Log.e("DEFEX","file saved to "+file.getAbsolutePath());
}catch(IOException e){
e.printStackTrace();
}
}
}
@Override
public void onErrorResponse(VolleyError error) {
Log.e("DEFEX", "UNABLE TO DOWNLOAD FILE. ERROR:: "+error.toString());
}
}
這是我的類DefexDownload(擴展了Request):
class DefexDownload extends Request<byte[]>{
private final Response.Listener<byte[]> mListener;
private Map<String, String> mParams;
public Map<String, String> responseHeaders ;
DefexDownload(int post, String mUrl, Response.Listener<byte[]> listener, Response.ErrorListener errorListener, HashMap<String, String> params){
super(post, mUrl, errorListener);
setShouldCache(false);
mListener = listener;
mParams=params;
}
@Override
protected Map<String, String> getParams() throws com.android.volley.AuthFailureError {
return mParams;
}
@Override
protected void deliverResponse(byte[] response) {
mListener.onResponse(response);
}
@Override
protected Response<byte[]> parseNetworkResponse(NetworkResponse response) {
//Initialise local responseHeaders map with response headers received
responseHeaders = response.headers;
//Pass the response data here
return Response.success(response.data, HttpHeaderParser.parseCacheHeaders(response));
}
}
我不知道這里可能出什么問題,將不勝感激任何幫助
編輯:在這里我發現的所有其他答案上,問題似乎是代理或設備仿真器,但是我在不使用任何代理的真實設備上運行我的應用程序
根據Github上的這個問題 。
因此
HurlStack
或多或少只是HttpUrlConnection
的薄包裝。 嘗試建立連接時,可能是EOFException
來自那里。 我認為Volley對此無能為力,除非存在已知的平台錯誤,否則無法采取安全的解決方法。原因鏈的堆棧跟蹤很容易看,因為某些平台類在幕后拋出了異常。 否則,如果您直接使用
HttpUrlConnection
,我懷疑您會重現同樣的問題,這意味着不幸的是Volley不能做很多事情。搜索異常表示許多潛在問題,例如Android HttpUrlConnection Url在仿真器上不起作用,表明存在問題的機器上的網絡問題,這解釋了為什么它只是仿真器。
對問題的期望:
解決方案
我無法使用Volley做到這一點,但是我可以使用此答案成功下載文件(最適合我的解決方案是接受的答案中的解決方案2)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.