# QNetworkReply Class Reference
## [[QtNetwork](index.htm) module]
该QNetworkReply类包含数据和标头与发送请求[QNetworkAccessManager](qnetworkaccessmanager.html) [More...](#details)
继承[QIODevice](qiodevice.html)。
### Types
* `enum NetworkError { NoError, ConnectionRefusedError, RemoteHostClosedError, HostNotFoundError, ..., TemporaryNetworkFailureError }`
### Methods
* `__init__ (self, QObject parent = None)`
* `abort (self)`
* `QVariant attribute (self, QNetworkRequest.Attribute code)`
* `close (self)`
* `NetworkError error (self)`
* `bool hasRawHeader (self, QByteArray headerName)`
* `QVariant header (self, QNetworkRequest.KnownHeaders header)`
* `ignoreSslErrors (self)`
* `ignoreSslErrors (self, list-of-QSslError errors)`
* `bool isFinished (self)`
* `bool isRunning (self)`
* `bool isSequential (self)`
* `QNetworkAccessManager manager (self)`
* `QNetworkAccessManager.Operation operation (self)`
* `QByteArray rawHeader (self, QByteArray headerName)`
* `list-of-QByteArray rawHeaderList (self)`
* `list-of-tuple-of-QByteArray-QByteArray rawHeaderPairs (self)`
* `int readBufferSize (self)`
* `QNetworkRequest request (self)`
* `setAttribute (self, QNetworkRequest.Attribute code, QVariant value)`
* `setError (self, NetworkError errorCode, QString errorString)`
* `setFinished (self, bool finished)`
* `setHeader (self, QNetworkRequest.KnownHeaders header, QVariant value)`
* `setOperation (self, QNetworkAccessManager.Operation operation)`
* `setRawHeader (self, QByteArray headerName, QByteArray value)`
* `setReadBufferSize (self, int size)`
* `setRequest (self, QNetworkRequest request)`
* `setSslConfiguration (self, QSslConfiguration configuration)`
* `setUrl (self, QUrl url)`
* `QSslConfiguration sslConfiguration (self)`
* `QUrl url (self)`
* `int writeData (self, str data)`
### Qt Signals
* `void downloadProgress (qint64,qint64)`
* `void error (QNetworkReply::NetworkError)`
* `void finished ()`
* `void metaDataChanged ()`
* `void sslErrors (const QList<QSslError>&)`
* `void uploadProgress (qint64,qint64)`
* * *
## Detailed Description
该QNetworkReply类包含数据和标头与发送请求[QNetworkAccessManager](qnetworkaccessmanager.html)
该QNetworkReply类包含与贴有一个请求中的数据和元数据[QNetworkAccessManager](qnetworkaccessmanager.html)。喜欢[QNetworkRequest](qnetworkrequest.html),它包含一个URL和标题(无论是在解析和原始形式) ,对答复的状态和回复本身的内容的一些信息。
QNetworkReply是顺序存取[QIODevice](qiodevice.html),这意味着,一旦数据从对象读取时,它不再保持通过该装置。因此,它是应用程序的责任,保持这个数据,如果需要。每当更多的数据是从网络接收和处理,则[readyRead](qiodevice.html#readyRead)()信号被发射。
该[downloadProgress](qnetworkreply.html#downloadProgress)()信号也被发射的数据的接收时,但包含在它的字节数可能并不代表实际收到的字节,如果有的话变换完成的内容(例如,解压缩并去除协议开销)。
尽管QNetworkReply是[QIODevice](qiodevice.html)连接到应答的内容,它也发射[uploadProgress](qnetworkreply.html#uploadProgress)()信号,其指示上载于具有这样的内容的操作的进度。
**Note:**请不要删除该对象在连接到插槽[error](qnetworkreply.html#error)()或[finished](qnetworkreply.html#finished)()信号。使用[deleteLater](qobject.html#deleteLater)( ) 。
* * *
## Type Documentation
```
QNetworkReply.NetworkError
```
指示请求的处理过程中找到的所有可能的错误条件。
| Constant | Value | Description |
| --- | --- | --- |
| `QNetworkReply.NoError` | `0` | 没有错误条件。**Note:**当HTTP协议返回一个重定向没有错误将被报告。您可以检查是否有与重定向[QNetworkRequest.RedirectionTargetAttribute](qnetworkrequest.html#Attribute-enum)属性。 |
| `QNetworkReply.ConnectionRefusedError` | `1` | 远程服务器拒绝连接(服务器不接受请求) |
| `QNetworkReply.RemoteHostClosedError` | `2` | 远程服务器关闭了连接过早,整个答复接收和处理前 |
| `QNetworkReply.HostNotFoundError` | `3` | 远程主机名未找到(无效主机名) |
| `QNetworkReply.TimeoutError` | `4` | 连接到远程服务器超时 |
| `QNetworkReply.OperationCanceledError` | `5` | 该操作是通过调用取消[abort](qnetworkreply.html#abort)()或[close](qnetworkreply.html#close)( ),它被完成之前。 |
| `QNetworkReply.SslHandshakeFailedError` | `6` | 在SSL / TLS握手失败,加密的通道不能成立。该[sslErrors](qnetworkreply.html#sslErrors)()信号应该被发射。 |
| `QNetworkReply.TemporaryNetworkFailureError` | `7` | 该连接由于从网络断开断裂,但是在系统启动漫游到另一个接入点。该请求应该被重新提交,并会尽快连接重新建立处理。 |
| `QNetworkReply.ProxyConnectionRefusedError` | `101` | 连接到代理服务器被拒绝(代理服务器不接受请求) |
| `QNetworkReply.ProxyConnectionClosedError` | `102` | 代理服务器关闭了连接过早,整个答复接收和处理前 |
| `QNetworkReply.ProxyNotFoundError` | `103` | 代理主机名没有被发现(无效的代理主机名) |
| `QNetworkReply.ProxyTimeoutError` | `104` | 连接到代理服务器超时或代理没有及时发送请求回复 |
| `QNetworkReply.ProxyAuthenticationRequiredError` | `105` | 代理需要身份验证才能兑现的要求,但没有接受其提供的任何凭证(如有) |
| `QNetworkReply.ContentAccessDenied` | `201` | 在访问远程内容被拒绝(类似于HTTP错误401 ) |
| `QNetworkReply.ContentOperationNotPermittedError` | `202` | 要求对远程内容的操作是不允许的 |
| `QNetworkReply.ContentNotFoundError` | `203` | 远程内容并没有在服务器上找到(类似于HTTP错误404 ) |
| `QNetworkReply.AuthenticationRequiredError` | `204` | 远程服务器要求身份验证服务的内容,但提供的凭据不被接受(如果有的话) |
| `QNetworkReply.ContentReSendError` | `205` | 请求需要再次发送,但这种失败的例子,因为上传的数据无法读取第二次。 |
| `QNetworkReply.ProtocolUnknownError` | `301` | 网络访问API无法兑现的请求,因为该协议是不为人所知的 |
| `QNetworkReply.ProtocolInvalidOperationError` | `302` | 所请求的操作是此协议无效 |
| `QNetworkReply.UnknownNetworkError` | `99` | 检测到一个未知的网络有关的错误 |
| `QNetworkReply.UnknownProxyError` | `199` | 检测到一个未知的代理相关的错误 |
| `QNetworkReply.UnknownContentError` | `299` | 检测到一个未知错误相关的远程内容 |
| `QNetworkReply.ProtocolFailure` | `399` | 检测在协议的故障(解析错误,无效的或意外的反应,等等) |
**See also** [error](qnetworkreply.html#error)( ) 。
* * *
## Method Documentation
```
QNetworkReply.__init__ (self, QObject parent = None)
```
该_parent_的说法,如果不是没有,原因_self_通过Qt的,而不是PyQt的拥有。
创建[QNetworkReply](qnetworkreply.html)与父对象_parent_。
你不能直接实例化[QNetworkReply](qnetworkreply.html)对象。使用[QNetworkAccessManager](qnetworkaccessmanager.html)函数来做到这一点。
```
QNetworkReply.abort (self)
```
这种方法是抽象的,应在任何子类中重新实现。
立即中止操作,并关闭所有的网络连接仍然处于打开状态。上传仍在进行中,也中止。
**See also** [close](qnetworkreply.html#close)( ) 。
```
QVariant QNetworkReply.attribute (self, QNetworkRequest.Attribute code)
```
```
QNetworkReply.close (self)
```
从重新实现[QIODevice.close](qiodevice.html#close)( ) 。
关闭此设备以供读取。未读取的数据将被丢弃,但是网络资源不被丢弃,直到它们被完成。特别是,如果任何的上传过程中,它会继续,直到它完成。
该[finished](qnetworkreply.html#finished)当所有的操作都在和网络资源被释放( )信号被发射。
**See also** [abort](qnetworkreply.html#abort)()和[finished](qnetworkreply.html#finished)( ) 。
```
NetworkError QNetworkReply.error (self)
```
[](qnetworkreply.html#NetworkError-enum)
[返回该请求的处理过程中发现错误。如果没有发现错误,返回](qnetworkreply.html#NetworkError-enum)[NoError](qnetworkreply.html#NetworkError-enum)。
**See also** [setError](qnetworkreply.html#setError)( ) 。
```
bool QNetworkReply.hasRawHeader (self, QByteArray headerName)
```
返回True如果name原始标题_headerName_被送往由远程服务器
**See also** [rawHeader](qnetworkreply.html#rawHeader)( ) 。
```
QVariant QNetworkReply.header (self, QNetworkRequest.KnownHeaders header)
```
返回已知的标头的值_header_,如果这头被送往由远程服务器。如果头没有被发送,返回无效[QVariant](qvariant.html)。
**See also** [rawHeader](qnetworkreply.html#rawHeader)( )[setHeader](qnetworkreply.html#setHeader)()和[QNetworkRequest.header](qnetworkrequest.html#header)( ) 。
```
QNetworkReply.ignoreSslErrors (self)
```
这种方法也是一个Qt槽与C + +的签名`void ignoreSslErrors()`。
如果这个函数被调用,涉及到网络连接的SSL错误将被忽略,包括证书验证错误。
**Warning:**一定要始终让用户检查报告的错误[sslErrors](qnetworkreply.html#sslErrors)( )信号,并且只从用户的程序是确定经确认后,调用此方法。如果有意外的错误,得到的答复应中止。不检查实际的错误调用此方法将最有可能带来安全风险的应用程序。使用它以极大的关怀!
这个函数可以从连接到插槽被称为[sslErrors](qnetworkreply.html#sslErrors)()信号,这表明它被发现的错误。
**See also** [sslConfiguration](qnetworkreply.html#sslConfiguration)( )[sslErrors](qnetworkreply.html#sslErrors)()和[QSslSocket.ignoreSslErrors](qsslsocket.html#ignoreSslErrors)( ) 。
```
QNetworkReply.ignoreSslErrors (self, list-of-QSslError errors)
```
这是一个重载函数。
如果这个函数被调用时,在给定的SSL错误_errors_将被忽略。
请注意,您可以在SSL错误设定预期的证书:如果,例如,你想发出一个请求到使用自签名证书的服务器时,请考虑下面的代码片断:
```
[QList](index.htm)<[QSslCertificate](qsslcertificate.html)> cert = [QSslCertificate](qsslcertificate.html).fromPath(QLatin1String("server-certificate.pem"));
[QSslError](qsslerror.html) error([QSslError](qsslerror.html).SelfSignedCertificate, cert.at(0));
[QList](index.htm)<[QSslError](qsslerror.html)> expectedSslErrors;
expectedSslErrors.append(error);
[QNetworkReply](qnetworkreply.html) *reply = manager.get([QNetworkRequest](qnetworkrequest.html)([QUrl](qurl.html)("https://server.tld/index.html")));
reply->ignoreSslErrors(expectedSslErrors);
// here connect signals etc.
```
多次调用该函数会被替换传入以前调用的错误列表。您可以清除通过调用这个函数以一个空列表,你要忽略错误的列表。
此功能被引入Qt的4.6 。
**See also** [sslConfiguration](qnetworkreply.html#sslConfiguration)( )[sslErrors](qnetworkreply.html#sslErrors)()和[QSslSocket.ignoreSslErrors](qsslsocket.html#ignoreSslErrors)( ) 。
```
bool QNetworkReply.isFinished (self)
```
返回True时,答复已完成或已中止。
此功能被引入Qt的4.6 。
**See also** [isRunning](qnetworkreply.html#isRunning)( ) 。
```
bool QNetworkReply.isRunning (self)
```
返回True时,该请求仍在处理并答复未能完成或已中止呢。
此功能被引入Qt的4.6 。
**See also** [isFinished](qnetworkreply.html#isFinished)( ) 。
```
bool QNetworkReply.isSequential (self)
```
```
QNetworkAccessManager QNetworkReply.manager (self)
```
[](qnetworkaccessmanager.html)
[返回](qnetworkaccessmanager.html)[QNetworkAccessManager](qnetworkaccessmanager.html)这是用于创建此[QNetworkReply](qnetworkreply.html)对象。起初,它也是父对象。
```
QNetworkAccessManager.Operation QNetworkReply.operation (self)
```
[
返回被张贴该回复操作。
](qnetworkaccessmanager.html#Operation-enum)
[**See also**](qnetworkaccessmanager.html#Operation-enum) [setOperation](qnetworkreply.html#setOperation)( ) 。
```
QByteArray QNetworkReply.rawHeader (self, QByteArray headerName)
```
[](qbytearray.html)
[返回头的原始内容_headerName_由远程服务器发送。如果没有这样的标题,则返回一个空字节数组,这可能是从一个空的头没有区别。使用](qbytearray.html)[hasRawHeader](qnetworkreply.html#hasRawHeader)()来验证,如果服务器发送这样的头字段。
**See also** [setRawHeader](qnetworkreply.html#setRawHeader)( )[hasRawHeader](qnetworkreply.html#hasRawHeader)()和[header](qnetworkreply.html#header)( ) 。
```
list-of-QByteArray QNetworkReply.rawHeaderList (self)
```
返回由远程服务器发送的,因为它们被发送的顺序头字段的列表。重复的头被合并在一起并发生后重复的。
```
list-of-tuple-of-QByteArray-QByteArray QNetworkReply.rawHeaderPairs (self)
```
返回原头对的列表。
```
int QNetworkReply.readBufferSize (self)
```
返回读缓冲区的大小,以字节为单位。
**See also** [setReadBufferSize](qnetworkreply.html#setReadBufferSize)( ) 。
```
QNetworkRequest QNetworkReply.request (self)
```
[
返回被张贴于本答复的请求。在特殊的,注意的URL请求可以是比该答复的不同。
](qnetworkrequest.html)
[**See also**](qnetworkrequest.html) [QNetworkRequest.url](qnetworkrequest.html#url)( )[url](qnetworkreply.html#url)()和[setRequest](qnetworkreply.html#setRequest)( ) 。
```
QNetworkReply.setAttribute (self, QNetworkRequest.Attribute code, QVariant value)
```
设置属性_code_有值_value_。如果_code_以前设置,它会被复盖。如果_value_是无效的[QVariant](qvariant.html),该属性将取消。
**See also** [attribute](qnetworkreply.html#attributex)()和[QNetworkRequest.setAttribute](qnetworkrequest.html#setAttribute)( ) 。
```
QNetworkReply.setError (self, NetworkError errorCode, QString errorString)
```
设置错误条件是_errorCode_。人类可读的消息设置_errorString_。
调用SETERROR ( )不会发出错误([QNetworkReply.NetworkError](qnetworkreply.html#NetworkError-enum))信号。
**See also** [error](qnetworkreply.html#error)()和[errorString](qiodevice.html#errorString)( ) 。
```
QNetworkReply.setFinished (self, bool finished)
```
设置答复_finished_。
有在此之后设置回复的数据不能改变。
此功能被引入Qt的4.8 。
**See also** [finished](qnetworkreply.html#finished)()和[isFinished](qnetworkreply.html#isFinished)( ) 。
```
QNetworkReply.setHeader (self, QNetworkRequest.KnownHeaders header, QVariant value)
```
设置已知的头_header_有利用价值_value_。标题的相应的原始表格将被设置为好。
**See also** [header](qnetworkreply.html#header)( )[setRawHeader](qnetworkreply.html#setRawHeader)()和[QNetworkRequest.setHeader](qnetworkrequest.html#setHeader)( ) 。
```
QNetworkReply.setOperation (self, QNetworkAccessManager.Operation operation)
```
设置为是此对象的相关操作_operation_。这个值将被退回[operation](qnetworkreply.html#operation)( ) 。
注:在创建这个对象,而不是再次改变时,操作应设置。
**See also** [operation](qnetworkreply.html#operation)()和[setRequest](qnetworkreply.html#setRequest)( ) 。
```
QNetworkReply.setRawHeader (self, QByteArray headerName, QByteArray value)
```
设置原始标题_headerName_有利用价值_value_。如果_headerName_以前设置,它将被重写。具有相同名称的多个HTTP头在功能上等同于串联的值,用逗号分隔的一个单头。
If _headerName_匹配一个已知的头,值_value_将被解析和相应的解析形式也将被设置。
**See also** [rawHeader](qnetworkreply.html#rawHeader)( )[header](qnetworkreply.html#header)( )[setHeader](qnetworkreply.html#setHeader)()和[QNetworkRequest.setRawHeader](qnetworkrequest.html#setRawHeader)( ) 。
```
QNetworkReply.setReadBufferSize (self, int size)
```
设置读缓冲要的大小_size_字节。读缓冲区存放的数据正在被下载的断网,然后才读缓冲区[QIODevice.read](qiodevice.html#read)( ) 。设置缓冲区大小为0,将使缓冲区无限的大小。
[QNetworkReply](qnetworkreply.html)会试图阻止从网络读取一次该缓冲区已满(即,[bytesAvailable](qiodevice.html#bytesAvailable)()返回_size_或更多) ,从而导致下载到踩下油门为好。如果缓冲区不局限于在大小,[QNetworkReply](qnetworkreply.html)会尝试从网络中尽可能快地下载。
不像[QAbstractSocket.setReadBufferSize](qabstractsocket.html#setReadBufferSize)( )[QNetworkReply](qnetworkreply.html)不能在读取缓冲区大小保证精度。即,[bytesAvailable](qiodevice.html#bytesAvailable)( )可以返回多个_size_。
**See also** [readBufferSize](qnetworkreply.html#readBufferSize)( ) 。
```
QNetworkReply.setRequest (self, QNetworkRequest request)
```
设置相关的请求此对象是_request_。这个值将被退回[request](qnetworkreply.html#request)( ) 。
注:在创建这个对象,而不是再次改变时,该请求应该被设置。
**See also** [request](qnetworkreply.html#request)()和[setOperation](qnetworkreply.html#setOperation)( ) 。
```
QNetworkReply.setSslConfiguration (self, QSslConfiguration configuration)
```
设置与此请求关联的网络连接的SSL配置,如果可能的话,是说的_config_。
**See also** [sslConfiguration](qnetworkreply.html#sslConfiguration)( ) 。
```
QNetworkReply.setUrl (self, QUrl url)
```
设置被加工成的网址_url_。通常,该URL匹配被张贴的请求,但对各种原因也可以是不同的(例如,被制成一个文件路径的绝对或规范) 。
**See also** [url](qnetworkreply.html#url)( )[request](qnetworkreply.html#request)()和[QNetworkRequest.url](qnetworkrequest.html#url)( ) 。
```
QSslConfiguration QNetworkReply.sslConfiguration (self)
```
[
返回与此相关的答复,如果已使用SSL SSL配置和状态。它将包含远程服务器的证书,其证书链导致的证书颁发机构,以及在使用中的加密密码。
](qsslconfiguration.html)
[同行的证书,其证书链会的时候被称为](qsslconfiguration.html)[sslErrors](qnetworkreply.html#sslErrors)()被发射,如果它的发射。
**See also** [setSslConfiguration](qnetworkreply.html#setSslConfiguration)( ) 。
```
QUrl QNetworkReply.url (self)
```
[
返回下载或上传的内容的URL 。注意,这个URL可以是从原始请求的不同。
](qurl.html)
[**See also**](qurl.html) [request](qnetworkreply.html#request)( )[setUrl](qnetworkreply.html#setUrl)()和[QNetworkRequest.url](qnetworkrequest.html#url)( ) 。
```
int QNetworkReply.writeData (self, str data)
```
* * *
## Qt Signal Documentation
```
void downloadProgress (qint64,qint64)
```
这是该信号的默认超载。
这个信号被发射,以指示该网络请求的下载部分的进展,如果有任何。如果没有与此请求关联的下载,这个信号将被一次使用0作为发射两者的值_bytesReceived_和_bytesTotal_。
该_bytesReceived_参数表示接收的字节数,而_bytesTotal_表示预期要被下载的总字节数。如果不知道要被下载的字节数,_bytesTotal_将为-1 。
下载完成时_bytesReceived_等于_bytesTotal_。在那个时候,_bytesTotal_不会是-1。
注意,这两个值_bytesReceived_和_bytesTotal_可以从不同的[size](qiodevice.html#size)( ) ,获得通过的总字节数[read](qiodevice.html#read)()或[readAll](qiodevice.html#readAll)() ,或标头( ContentLengthHeader )的值。其理由是,有可能是协议开销或数据可能在下载过程中被压缩。
**See also** [uploadProgress](qnetworkreply.html#uploadProgress)()和[bytesAvailable](qiodevice.html#bytesAvailable)( ) 。
```
void error (QNetworkReply::NetworkError)
```
这是该信号的默认超载。
当答复检测处理错误这个信号被发射。该[finished](qnetworkreply.html#finished)()信号可能会遵循,这表明连接已经结束。
该_code_参数包含检测到的错误代码。通话[errorString](qiodevice.html#errorString)( )取得的错误条件的文本表示。
**Note:**不要删除对象连接到这个信号的插槽。使用[deleteLater](qobject.html#deleteLater)( ) 。
**See also** [error](qnetworkreply.html#error)()和[errorString](qiodevice.html#errorString)( ) 。
```
void finished ()
```
这是该信号的默认超载。
当回复已完成处理这个信号被发射。之后此信号被发射,将没有更多的更新到应答的数据或元数据。
除非[close](qnetworkreply.html#close)( )被调用时,答复将仍然打开进行读取,所以数据可以通过调用来检索[read](qiodevice.html#read)()或[readAll](qiodevice.html#readAll)( ) 。特别是,如果没有调用[read](qiodevice.html#read)()被提了出来的结果[readyRead](qiodevice.html#readyRead)( ) ,调用[readAll](qiodevice.html#readAll)( )将获取的全部内容[QByteArray](qbytearray.html)。
这个信号在配合发出[QNetworkAccessManager.finished](qnetworkaccessmanager.html#finished)( )该信号的答复参数是这个对象。
**Note:**不要删除对象连接到这个信号的插槽。使用[deleteLater](qobject.html#deleteLater)( ) 。
您也可以使用[isFinished](qnetworkreply.html#isFinished)()来检查一个[QNetworkReply](qnetworkreply.html)您收到成品( )信号前完成均匀。
**See also** [setFinished](qnetworkreply.html#setFinished)( )[QNetworkAccessManager.finished](qnetworkaccessmanager.html#finished)()和[isFinished](qnetworkreply.html#isFinished)( ) 。
```
void metaDataChanged ()
```
这是该信号的默认超载。
这个信号被发射时在此回复的元数据更改。元数据是不是内容(数据)本身,包括网络报头的任何信息。在大多数情况下,元数据将完全由被接收数据的第一个字节时已知的。然而,能够将数据的处理过程中接收标题或其他元数据的更新。
**See also** [header](qnetworkreply.html#header)( )[rawHeaderList](qnetworkreply.html#rawHeaderList)( )[rawHeader](qnetworkreply.html#rawHeader)()和[hasRawHeader](qnetworkreply.html#hasRawHeader)( ) 。
```
void sslErrors (const QList<QSslError>&)
```
这是该信号的默认超载。
这个信号被发射,如果SSL / TLS会话期间,成立了包括证书验证错误,遇到错误。该_errors_参数包含错误的列表。
为了表明这些错误不是致命的,而连接应进行,[ignoreSslErrors](qnetworkreply.html#ignoreSslErrors)()函数应该被称为从连接到该信号的时隙。如果它不叫, SSL会话将被推倒的任何数据交换(包括URL)之前。
这个信号可以被用来显示一个错误消息,指示安全性可能会受到影响的用户,并显示在SSL设置(见[sslConfiguration](qnetworkreply.html#sslConfiguration)()来获取它) 。如果用户决定继续进行远程证明分析后,槽应调用[ignoreSslErrors](qnetworkreply.html#ignoreSslErrors)( ) 。
**See also** [QSslSocket.sslErrors](qsslsocket.html#sslErrors)( )[QNetworkAccessManager.sslErrors](qnetworkaccessmanager.html#sslErrors)( )[sslConfiguration](qnetworkreply.html#sslConfiguration)()和[ignoreSslErrors](qnetworkreply.html#ignoreSslErrors)( ) 。
```
void uploadProgress (qint64,qint64)
```
这是该信号的默认超载。
这个信号被发射,以指示该网络请求的载部分的进展,如果有任何。如果没有与该请求相关联的上载,该信号将不会被发射。
该_bytesSent_参数表示上传的字节数,而_bytesTotal_指示要被上传的总字节数。如果不能确定要上载的字节数,_bytesTotal_将为-1 。
上传完成后,当_bytesSent_等于_bytesTotal_。在那个时候,_bytesTotal_不会是-1。
**See also** [downloadProgress](qnetworkreply.html#downloadProgress)( ) 。
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