@Override
@SuppressWarnings("fallthrough")
public boolean stopDownload() {
switch (getStatus()) {
case IN_PROGRESS:
if (request != null) {
request.abort();
}
status = TemplateDownloader.Status.ABORTED;
return true;
case UNKNOWN:
case NOT_STARTED:
case RECOVERABLE_ERROR:
case UNRECOVERABLE_ERROR:
case ABORTED:
status = TemplateDownloader.Status.ABORTED;
case DOWNLOAD_FINISHED:
File f = new File(toFile);
if (f.exists()) {
f.delete();
}
return true;
default:
return true;
}
}
/**
* 根据url获取ResponseBody,method=get
*
* @param url exp:http://192.168.1.1:8080/dir/target.html
* @return 以byte[]的方式放回
*/
public static byte[] getDataFromUrl(String url, int timeout) {
if (StringUtils.isBlank(url)) {
logger.error("url is blank!");
return null;
}
HttpClient httpClient = new HttpClient();
// 连接超时
httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(8000);
// 等待数据返回超时
httpClient.getParams().setSoTimeout(timeout);
GetMethod method = new GetMethod(url);
// fix连接结束后不能正确关闭的问题
// method.setRequestHeader("Connection", "close");
// 如果发生错误则连续尝试1次
method
.getParams()
.setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(1, false));
try {
int statusCode = httpClient.executeMethod(method);
if (statusCode == HttpStatus.SC_OK) {
return method.getResponseBody();
} else {
throw new RuntimeException(
"http request error,return code:"
+ statusCode
+ ",msg:"
+ new String(method.getResponseBody()));
}
} catch (HttpException e) {
method.abort();
logger.error(e.getMessage());
} catch (IOException e) {
method.abort();
logger.error(e.getMessage());
} finally {
// Release the connection.
method.releaseConnection();
}
return null;
}
protected int downloadFile(OwnCloudClient client, File targetFile)
throws HttpException, IOException, OperationCancelledException {
int status = -1;
boolean savedFile = false;
mGet = new GetMethod(client.getWebdavUri() + WebdavUtils.encodePath(mRemotePath));
Iterator<OnDatatransferProgressListener> it = null;
FileOutputStream fos = null;
try {
status = client.executeMethod(mGet);
if (isSuccess(status)) {
targetFile.createNewFile();
BufferedInputStream bis = new BufferedInputStream(mGet.getResponseBodyAsStream());
fos = new FileOutputStream(targetFile);
long transferred = 0;
Header contentLength = mGet.getResponseHeader("Content-Length");
long totalToTransfer =
(contentLength != null && contentLength.getValue().length() > 0)
? Long.parseLong(contentLength.getValue())
: 0;
byte[] bytes = new byte[4096];
int readResult = 0;
while ((readResult = bis.read(bytes)) != -1) {
synchronized (mCancellationRequested) {
if (mCancellationRequested.get()) {
mGet.abort();
throw new OperationCancelledException();
}
}
fos.write(bytes, 0, readResult);
transferred += readResult;
synchronized (mDataTransferListeners) {
it = mDataTransferListeners.iterator();
while (it.hasNext()) {
it.next()
.onTransferProgress(
readResult, transferred, totalToTransfer, targetFile.getName());
}
}
}
if (transferred == totalToTransfer) { // Check if the file is completed
savedFile = true;
Header modificationTime = mGet.getResponseHeader("Last-Modified");
if (modificationTime == null) {
modificationTime = mGet.getResponseHeader("last-modified");
}
if (modificationTime != null) {
Date d = WebdavUtils.parseResponseDate((String) modificationTime.getValue());
mModificationTimestamp = (d != null) ? d.getTime() : 0;
} else {
Log_OC.e(
TAG, "Could not read modification time from response downloading " + mRemotePath);
}
mEtag = WebdavUtils.getEtagFromResponse(mGet);
if (mEtag.length() == 0) {
Log_OC.e(TAG, "Could not read eTag from response downloading " + mRemotePath);
}
} else {
client.exhaustResponse(mGet.getResponseBodyAsStream());
// TODO some kind of error control!
}
} else {
client.exhaustResponse(mGet.getResponseBodyAsStream());
}
} finally {
if (fos != null) fos.close();
if (!savedFile && targetFile.exists()) {
targetFile.delete();
}
mGet.releaseConnection(); // let the connection available for other methods
}
return status;
}
