/**
* Initializes the DiskBasedCache by scanning for all files currently in the specified root
* directory. Creates the root directory if necessary.
*/
@Override
public synchronized void initialize() {
if (!mRootDirectory.exists()) { // 如果根目录不存在，创建根目录
if (!mRootDirectory.mkdirs()) {
VolleyLog.e("Unable to create cache dir %s", mRootDirectory.getAbsolutePath());
}
return;
}
File[] files = mRootDirectory.listFiles();
if (files == null) {
return;
}
// 遍历所有的文件，将文件转换为CacheHeader对象，并将其添加到缓存集合之中
for (File file : files) {
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
CacheHeader entry = CacheHeader.readHeader(fis);
entry.size = file.length();
putEntry(entry.key, entry);
} catch (IOException e) {
if (file != null) {
file.delete(); // 如果存在异常则删除异常文件
}
} finally {
try {
if (fis != null) {
fis.close();
}
} catch (IOException ignored) {
}
}
}
}
private void buildMultipartEntity() {
entity.addPart(FILE_PART_NAME, new FileBody(mFilePart));
try {
entity.addPart(STRING_PART_NAME, new StringBody(mStringPart));
} catch (UnsupportedEncodingException e) {
VolleyLog.e("UnsupportedEncodingException");
}
}
protected void finalize() throws Throwable {
if (!this.mFinished) {
finish("Request on the loose");
VolleyLog.e(
"Marker log finalized without finish() - uncaught exit point for request",
new Object[0]);
}
}
@Override
public byte[] getBody() throws AuthFailureError {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
entity.writeTo(bos);
} catch (IOException e) {
VolleyLog.e("IOException writing to ByteArrayOutputStream");
}
return bos.toByteArray();
}
@Override
public byte[] getBody() throws AuthFailureError {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
entity.writeTo(bos);
} catch (IOException e) {
VolleyLog.e("IOException writing to ByteArrayOutputStream");
}
// return bos.toByteArray();
System.out.println("write entity:" + byteArrayGlobal.toString());
return byteArrayGlobal;
}
private void buildMultipartEntity() {
entity.addPart(
"profile_picture",
new FileBody(new File("/storage/emulated/0/Pictures/VSCOCam/2015-07-31 11.55.14 1.jpg")));
try {
entity.addPart("user_id", new StringBody("15"));
entity.addPart("name", new StringBody("Bogs"));
entity.addPart("gender", new StringBody("Male"));
entity.addPart("date_birth", new StringBody("1999-12-5"));
entity.addPart("breed", new StringBody("monkey"));
} catch (UnsupportedEncodingException e) {
VolleyLog.e("UnsupportedEncodingException");
}
}
public MultipartRequest(
String url,
Response.Listener<String> rListener,
Response.ErrorListener eListener,
@Nullable HashMap<String, String> head,
@NonNull String stringPart,
@NonNull File file,
@Nullable Map<String, Object> param) {
super(Method.POST, url, rListener, eListener);
header = null;
if (head == null) {
header = new HashMap<>();
} else {
header = (HashMap) head.clone();
}
String boundary = "----WebKitFormBoundary7MA4YWxkTrZu0gW";
header.put("Content-Type", "multipart/form-data; boundary=" + boundary);
// build multi-part
MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
entityBuilder.setBoundary(boundary);
entityBuilder.addPart(stringPart, new FileBody(file));
if (param != null) {
try {
for (String key : param.keySet()) {
Object obj = param.get(key);
String input = obj.toString();
entityBuilder.addPart(key, new StringBody(input, ContentType.MULTIPART_FORM_DATA));
}
} catch (Exception e) {
VolleyLog.e("Fail to build multipart. " + e.getMessage());
e.printStackTrace();
}
}
entity = entityBuilder.build();
}
private static void addColumns2Map(
Class<?> entityType, String primaryKeyFieldName, HashMap<String, Column> columnMap) {
if (Object.class.equals(entityType)) return;
try {
Field[] fields = entityType.getDeclaredFields();
for (Field field : fields) {
if (ColumnUtils.isTransient(field) || Modifier.isStatic(field.getModifiers())) {
continue;
}
if (ColumnConverterFactory.isSupportColumnConverter(field.getType())) {
if (!field.getName().equals(primaryKeyFieldName)) {
Column column = new Column(entityType, field);
if (!columnMap.containsKey(column.getColumnName())) {
columnMap.put(column.getColumnName(), column);
}
}
} else if (ColumnUtils.isForeign(field)) {
Foreign column = new Foreign(entityType, field);
if (!columnMap.containsKey(column.getColumnName())) {
columnMap.put(column.getColumnName(), column);
}
} else if (ColumnUtils.isFinder(field)) {
Finder column = new Finder(entityType, field);
if (!columnMap.containsKey(column.getColumnName())) {
columnMap.put(column.getColumnName(), column);
}
}
}
if (!Object.class.equals(entityType.getSuperclass())) {
addColumns2Map(entityType.getSuperclass(), primaryKeyFieldName, columnMap);
}
} catch (Throwable e) {
VolleyLog.e(e.getMessage(), e);
}
}
@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
long requestStart = SystemClock.elapsedRealtime();
while (true) {
HttpResponse httpResponse = null;
byte[] responseContents = null;
Map<String, String> responseHeaders = new HashMap<String, String>();
try {
// Log Params
logParams(request);
// Gather headers.
Map<String, String> headers = new HashMap<String, String>();
headers.put("Accept-Encoding", "gzip");
headers.put("Connection", "Keep-Alive");
addCacheHeaders(headers, request.getCacheEntry());
httpResponse = mHttpStack.performRequest(request, headers);
StatusLine statusLine = httpResponse.getStatusLine();
int statusCode = statusLine.getStatusCode();
responseHeaders = convertHeaders(httpResponse.getAllHeaders());
// Handle cache validation.
if (statusCode == HttpStatus.SC_NOT_MODIFIED) {
return new NetworkResponse(
HttpStatus.SC_NOT_MODIFIED, request.getCacheEntry().data, responseHeaders, true);
}
// responseContents = entityToBytes(httpResponse.getEntity());
responseContents = entityToBytes(httpResponse);
// if the request is slow, log it.
long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
logSlowRequests(requestLifetime, request, responseContents, statusLine);
if (statusCode != HttpStatus.SC_OK && statusCode != HttpStatus.SC_NO_CONTENT) {
throw new IOException();
}
return new NetworkResponse(statusCode, responseContents, responseHeaders, false);
} catch (SocketTimeoutException e) {
// e.printStackTrace();
if (!request.allowRetry()) return null;
attemptRetryOnException("socket", request, new TimeoutError());
} catch (ConnectTimeoutException e) {
// e.printStackTrace();
if (!request.allowRetry()) return null;
attemptRetryOnException("connection", request, new TimeoutError());
} catch (MalformedURLException e) {
// e.printStackTrace();
throw new RuntimeException("Bad URL " + request.getUrl(), e);
} catch (IOException e) {
// e.printStackTrace();
if (!request.allowRetry()) return null;
int statusCode = 0;
NetworkResponse networkResponse = null;
if (httpResponse != null) {
statusCode = httpResponse.getStatusLine().getStatusCode();
} else {
throw new NoConnectionError(e);
}
VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
if (responseContents != null) {
networkResponse =
new NetworkResponse(statusCode, responseContents, responseHeaders, false);
if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
} else {
// TODO: Only throw ServerError for 5xx status codes.
throw new ServerError(networkResponse);
}
} else {
throw new NetworkError(networkResponse);
}
}
}
}
@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
long requestStart = SystemClock.elapsedRealtime();
while (true) {
HttpResponse httpResponse = null;
byte[] responseContents = null;
Map<String, String> responseHeaders = new HashMap<String, String>();
try {
// Gather headers.
Map<String, String> headers = new HashMap<String, String>();
addCacheHeaders(headers, request.getCacheEntry());
httpResponse = mHttpStack.performRequest(request, headers);
StatusLine statusLine = httpResponse.getStatusLine();
int statusCode = statusLine.getStatusCode();
responseHeaders = convertHeaders(httpResponse.getAllHeaders());
// Handle cache validation.
if (statusCode == HttpStatus.SC_NOT_MODIFIED) {
return new NetworkResponse(
HttpStatus.SC_NOT_MODIFIED,
request.getCacheEntry() == null ? null : request.getCacheEntry().data,
responseHeaders,
true);
}
// Some responses such as 204s do not have content. We must check.
if (httpResponse.getEntity() != null) {
responseContents = entityToBytes(httpResponse.getEntity());
} else {
// Add 0 byte response as a way of honestly representing a
// no-content request.
responseContents = new byte[0];
}
// if the request is slow, log it.
long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
logSlowRequests(requestLifetime, request, responseContents, statusLine);
if (statusCode < 200 || statusCode > 299) {
throw new IOException();
}
return new NetworkResponse(statusCode, responseContents, responseHeaders, false);
} catch (SocketTimeoutException e) {
attemptRetryOnException("socket", request, new TimeoutError());
} catch (ConnectTimeoutException e) {
attemptRetryOnException("connection", request, new TimeoutError());
} catch (MalformedURLException e) {
throw new RuntimeException("Bad URL " + request.getUrl(), e);
} catch (IOException e) {
int statusCode = 0;
NetworkResponse networkResponse = null;
if (httpResponse != null) {
statusCode = httpResponse.getStatusLine().getStatusCode();
} else {
throw new NoConnectionError(e);
}
VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
if (responseContents != null) {
networkResponse =
new NetworkResponse(statusCode, responseContents, responseHeaders, false);
if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
} else {
// TODO: Only throw ServerError for 5xx status codes.
throw new ServerError(networkResponse);
}
} else {
throw new NetworkError(networkResponse);
}
}
}
}
@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
long requestStart = SystemClock.elapsedRealtime();
while (true) {
HttpResponse httpResponse = null;
byte[] responseContents = null;
Map<String, String> responseHeaders = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
try {
// Gather headers.
Map<String, String> headers = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
addCacheHeaders(headers, request.getCacheEntry());
httpResponse = mHttpStack.performRequest(request, headers);
responseHeaders.putAll(httpResponse.getAllHeaders());
int statusCode = httpResponse.getResponseCode();
// Handle cache validation.
if (statusCode == HttpResponse.SC_NOT_MODIFIED) {
Entry entry = request.getCacheEntry();
if (entry == null) {
return new NetworkResponse(
HttpResponse.SC_NOT_MODIFIED,
null,
responseHeaders,
true,
SystemClock.elapsedRealtime() - requestStart);
}
// A HTTP 304 response does not have all header fields. We
// have to use the header fields from the cache entry plus
// the new ones from the response.
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
entry.responseHeaders.putAll(responseHeaders);
return new NetworkResponse(
HttpResponse.SC_NOT_MODIFIED,
entry.data,
entry.responseHeaders,
true,
SystemClock.elapsedRealtime() - requestStart);
}
// Handle moved resources
if (statusCode == HttpResponse.SC_MOVED_PERMANENTLY
|| statusCode == HttpResponse.SC_MOVED_TEMPORARILY) {
String newUrl = responseHeaders.get("Location");
request.setRedirectUrl(newUrl);
}
// Some responses such as 204s do not have content. We must check.
if (httpResponse.getEntity() != null) {
responseContents = entityToBytes(httpResponse.getEntity());
} else {
// Add 0 byte response as a way of honestly representing a
// no-content request.
responseContents = new byte[0];
}
// if the request is slow, log it.
long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
logSlowRequests(requestLifetime, request, responseContents, httpResponse);
if (statusCode < 200 || statusCode > 299) {
throw new IOException();
}
return new NetworkResponse(
statusCode,
responseContents,
responseHeaders,
false,
SystemClock.elapsedRealtime() - requestStart);
} catch (SocketTimeoutException e) {
attemptRetryOnException("socket", request, new TimeoutError());
} catch (ConnectTimeoutException e) {
attemptRetryOnException("connection", request, new TimeoutError());
} catch (MalformedURLException e) {
throw new RuntimeException("Bad URL " + request.getUrl(), e);
} catch (IOException e) {
int statusCode = 0;
NetworkResponse networkResponse = null;
if (httpResponse != null) {
statusCode = httpResponse.getResponseCode();
} else {
throw new NoConnectionError(e);
}
if (statusCode == HttpResponse.SC_MOVED_PERMANENTLY
|| statusCode == HttpResponse.SC_MOVED_TEMPORARILY) {
VolleyLog.e(
"Request at %s has been redirected to %s", request.getOriginUrl(), request.getUrl());
} else {
VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
}
if (responseContents != null) {
networkResponse =
new NetworkResponse(
statusCode,
responseContents,
responseHeaders,
false,
SystemClock.elapsedRealtime() - requestStart);
if (statusCode == HttpResponse.SC_UNAUTHORIZED
|| statusCode == HttpResponse.SC_FORBIDDEN) {
attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
} else if (statusCode == HttpResponse.SC_MOVED_PERMANENTLY
|| statusCode == HttpResponse.SC_MOVED_TEMPORARILY) {
attemptRetryOnException("redirect", request, new RedirectError(networkResponse));
} else {
// TODO: Only throw ServerError for 5xx status codes.
throw new ServerError(networkResponse);
}
} else {
throw new NetworkError(e);
}
}
}
}
@Override
public void run() {
Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
Request request;
while (true) {
try {
// Take a request from the queue.
request = mQueue.take();
} catch (InterruptedException e) {
// We may have been interrupted because it was time to quit.
if (mQuit) {
return;
}
continue;
}
try {
request.addMarker("network-queue-take");
// If the request was cancelled already, do not perform the
// network request.
if (request.isCanceled()) {
request.finish("network-discard-cancelled");
continue;
}
// Tag the request (if API >= 14)
if (Build.VERSION.SDK_INT >= 14) {
TrafficStats.setThreadStatsTag(request.getTrafficStatsTag());
}
// Perform the network request.
NetworkResponse networkResponse = mNetwork.performRequest(request);
request.addMarker("network-http-complete");
// If the server returned 304 AND we delivered a response already,
// we're done -- don't deliver a second identical response.
if (networkResponse.notModified && request.hasHadResponseDelivered()) {
request.finish("not-modified");
continue;
}
// Parse the response here on the worker thread.
Response<?> response = request.parseNetworkResponse(networkResponse);
request.addMarker("network-parse-complete");
// Write to cache if applicable.
// TODO: Only update cache metadata instead of entire record for 304s.
if (request.shouldCache() && response.cacheEntry != null) {
mCache.put(request.getCacheKey(), response.cacheEntry);
request.addMarker("network-cache-written");
}
// Post the response back.
request.markDelivered();
mDelivery.postResponse(request, response);
} catch (VolleyError volleyError) {
parseAndDeliverNetworkError(request, volleyError);
} catch (Exception e) {
VolleyLog.e(e, "Unhandled exception %s", e.toString());
mDelivery.postError(request, new VolleyError(e));
}
}
}