使用HttpVersion.HTTP_1_0
进行文件下载。这可以防止使用“块传输编码”的
参见:http://en.wikipedia.org/wiki/Chunked_transfer_encoding
例如,重载构造函数,以便您可以指定哪些HTTP版本:
public class HTTPrequest
{
//member variables
private SchemeRegistry mSchemeRegistry;
private HttpParams mHttpParams;
private SingleClientConnManager mSCCmgr;
private HttpClient mHttpClient;
private HTTPrequestListener mHTTPrequestListener = null;
//constants
private final int TIMEOUT_CONNECTION = 20000;//20sec
private final int TIMEOUT_SOCKET = 30000;//30sec
//interface for callbacks
public interface HTTPrequestListener
{
public void downloadProgress(int iPercent);
}
/**
* Creates an HttpClient that uses plain text only.
* note: Default constructor uses HTTP 1.1
*/
public HTTPrequest()
{
this(HttpVersion.HTTP_1_1);
}
/**
* Creates an HttpClient that uses plain text only.
* @param httpVersion HTTP Version (0.9, 1.0, 1.1)
*/
public HTTPrequest(HttpVersion httpVersion)
{
//define permitted schemes
mSchemeRegistry = new SchemeRegistry();
mSchemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
//define http parameters
mHttpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(mHttpParams, TIMEOUT_CONNECTION);
HttpConnectionParams.setSoTimeout(mHttpParams, TIMEOUT_SOCKET);
HttpProtocolParams.setVersion(mHttpParams, httpVersion);
HttpProtocolParams.setContentCharset(mHttpParams, HTTP.UTF_8);
//tie together the schemes and parameters
mSCCmgr = new SingleClientConnManager(mHttpParams, mSchemeRegistry);
//generate a new HttpClient using connection manager and parameters
mHttpClient = new DefaultHttpClient(mSCCmgr, mHttpParams);
}
public void setHTTPrequestListener(HTTPrequestListener httpRequestListener)
{
mHTTPrequestListener = httpRequestListener;
}
//other methods for POST and GET
}
当你想要做一个文件下载使用HTTPrequest httpRequest = new HTTPrequest(HttpVersion.HTTP_1_0);
,当你想做一个POST或GET使用HTTPrequest httpRequest = new HTTPrequest();
可能是这样的:http://stackoverflow.com/questions/3418106/getcontentlength-return-1-only-in-wifi有与它有关的事情? – fredley 2010-09-01 11:31:03
@fredley我看到那篇文章,但我希望有人可能会用一个不同的类来检索它。 – mlevit 2010-09-01 12:06:05