QNetworkRequest 请求类

最新推荐文章于 2025-09-15 00:00:00 发布

转载最新推荐文章于 2025-09-15 00:00:00 发布 · 1.1k 阅读

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原文链接：http://www.cnblogs.com/L-Arikes/p/4386938.html

本文深入解析了QNetworkRequest类的功能和使用方法，该类在Qt网络模块中扮演关键角色，用于封装网络请求的所有必要信息，包括URL和辅助数据。文章详细介绍了其构造函数、属性、枚举类型及各种成员函数，帮助开发者更好地理解和应用此API。

QNetworkRequest Class

Header:   #include <QNetworkRequest>
qmake:   QT += network
Since:   Qt 4.4

这个QNetworkRequest类保存了一个将被QNetworkAccessManager发送的请求.
QNetworkRequest是Network Access API的一部分,是在网络上保存着发送一个请求的必要信息.它包含一个URL和一些辅助信息,可以被用来去修改请求.
参见 QNetworkReply and QNetworkAccessManager.

公众类型(Public Types):
enum   Attribute { HttpStatusCodeAttribute, HttpReasonPhraseAttribute, RedirectionTargetAttribute, ConnectionEncryptedAttribute, ..., UserMax }
enum   CacheLoadControl { AlwaysNetwork, PreferNetwork, PreferCache, AlwaysCache }
enum   KnownHeaders { ContentDispositionHeader, ContentTypeHeader, ContentLengthHeader, LocationHeader, ..., ServerHeader }
enum   LoadControl { Automatic, Manual }
enum   Priority { HighPriority, NormalPriority, LowPriority }
共有函数(Public Functions):

QNetworkRequest(const QUrl & url = QUrl())
QNetworkRequest(const QNetworkRequest & other)
~QNetworkRequest()
QVariant   attribute(Attribute code, const QVariant & defaultValue = QVariant()) const
bool   hasRawHeader(const QByteArray & headerName) const
QVariant   header(KnownHeaders header) const
QObject *   originatingObject() const
Priority   priority() const
QByteArray   rawHeader(const QByteArray & headerName) const
QList<QByteArray>   rawHeaderList() const
void   setAttribute(Attribute code, const QVariant & value)
void   setHeader(KnownHeaders header, const QVariant & value)
void   setOriginatingObject(QObject * object)
void   setPriority(Priority priority)
void   setRawHeader(const QByteArray & headerName, const QByteArray & headerValue)
void   setSslConfiguration(const QSslConfiguration & config)
void   setUrl(const QUrl & url)
QSslConfiguration   sslConfiguration() const
void   swap(QNetworkRequest & other)
QUrl   url() const
bool   operator!=(const QNetworkRequest & other) const
QNetworkRequest &   operator=(const QNetworkRequest & other)
bool   operator==(const QNetworkRequest & other) const

成员类型文档:

enum QNetworkRequest::Attribute
QNetworkRequest和QNetworkReply的属性代码.
属性是额外的元数据,可以被用来去控制请求的行为,以及传递从应答反馈的进一步的信息到应用程序上.属性也是可以扩展的,允许自定义实现去传递自定义值.
The following table explains what the default attribute codes are, the QVariant types associated, the default value if said attribute is missing and whether it's used in requests or replies.

以下的表格解释了默认的属性代码是什么

转载于:https://www.cnblogs.com/L-Arikes/p/4386938.html