# QXmlReader Class Reference
## [[QtXml](index.htm) module]
该QXmlReader类提供对XML的读者（即解析器）的接口。[More...](#details)
通过继承[QXmlSimpleReader](qxmlsimplereader.html)。
### Methods
* `__init__ (self)`
* `__init__ (self, QXmlReader)`
* `QXmlContentHandler contentHandler (self)`
* `QXmlDeclHandler declHandler (self)`
* `QXmlDTDHandler DTDHandler (self)`
* `QXmlEntityResolver entityResolver (self)`
* `QXmlErrorHandler errorHandler (self)`
* `(bool, bool ok) feature (self, QString name)`
* `bool hasFeature (self, QString name)`
* `bool hasProperty (self, QString name)`
* `QXmlLexicalHandler lexicalHandler (self)`
* `bool parse (self, QXmlInputSource input)`
* `bool parse (self, QXmlInputSource input)`
* `(sip.voidptr, bool ok) property (self, QString name)`
* `setContentHandler (self, QXmlContentHandler handler)`
* `setDeclHandler (self, QXmlDeclHandler handler)`
* `setDTDHandler (self, QXmlDTDHandler handler)`
* `setEntityResolver (self, QXmlEntityResolver handler)`
* `setErrorHandler (self, QXmlErrorHandler handler)`
* `setFeature (self, QString name, bool value)`
* `setLexicalHandler (self, QXmlLexicalHandler handler)`
* `setProperty (self, QString name, sip.voidptr value)`
* * *
## Detailed Description
该QXmlReader类提供对XML的读者（即解析器）的接口。
这个抽象类提供了所有Qt的XML读取器的接口。目前只有一个执行包括在Qt的XML模块的读取器的：[QXmlSimpleReader](qxmlsimplereader.html)。在未来的版本中可能会有更多的读者提供（例如验证解析器）不同的属性。
XML类的设计遵循[SAX2 Java interface](http://www.saxproject.org/)，与调整以适应Qt的命名约定的名称。这应该是很容易的人谁曾与SAX2合作，开始使用Qt的XML类。
所有读者使用类[QXmlInputSource](qxmlinputsource.html)读取输入文档。既然你是在XML文档中的特定内容通常兴趣，读者通过特别的处理类（报告内容[QXmlDTDHandler](qxmldtdhandler.html)，[QXmlDeclHandler](qxmldeclhandler.html)，[QXmlContentHandler](qxmlcontenthandler.html)，[QXmlEntityResolver](qxmlentityresolver.html)，[QXmlErrorHandler](qxmlerrorhandler.html)和[QXmlLexicalHandler](qxmllexicalhandler.html)），您必须继承，如果你要处理的内容。
由于处理程序类只描述接口，你必须实现所有的功能。我们所提供的[QXmlDefaultHandler](qxmldefaulthandler.html)类来简化这一过程：它实现了一个默认的行为（做什么）的所有功能，所以你可以继承它，只是实现您感兴趣的功能
功能和读取器的性能可与设置[setFeature](qxmlreader.html#setFeature)（）和[setProperty](qxmlreader.html#setProperty)（ ）分别。您可以设置读卡器使用自己的子类与[setEntityResolver](qxmlreader.html#setEntityResolver)（ ）[setDTDHandler](qxmlreader.html#setDTDHandler)（ ）[setContentHandler](qxmlreader.html#setContentHandler)（ ）[setErrorHandler](qxmlreader.html#setErrorHandler)（ ）[setLexicalHandler](qxmlreader.html#setLexicalHandler)（）和[setDeclHandler](qxmlreader.html#setDeclHandler)（ ） 。解析本身开始调用[parse](qxmlreader.html#parse)（ ） 。
* * *
## Method Documentation
```
QXmlReader.__init__ (self)
```
```
QXmlReader.__init__ (self, QXmlReader)
```
```
QXmlContentHandler QXmlReader.contentHandler (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回内容处理程序或0，如果没有被设置。
](qxmlcontenthandler.html)
[**See also**](qxmlcontenthandler.html) [setContentHandler](qxmlreader.html#setContentHandler)（ ） 。
```
QXmlDeclHandler QXmlReader.declHandler (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回声明的处理程序或0，如果没有被设置。
](qxmldeclhandler.html)
[**See also**](qxmldeclhandler.html) [setDeclHandler](qxmlreader.html#setDeclHandler)（ ） 。
```
QXmlDTDHandler QXmlReader.DTDHandler (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回DTD处理程序或0，如果没有被设置。
](qxmldtdhandler.html)
[**See also**](qxmldtdhandler.html) [setDTDHandler](qxmlreader.html#setDTDHandler)（ ） 。
```
QXmlEntityResolver QXmlReader.entityResolver (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回实体解析器或0，如果没有被设置。
](qxmlentityresolver.html)
[**See also**](qxmlentityresolver.html) [setEntityResolver](qxmlreader.html#setEntityResolver)（ ） 。
```
QXmlErrorHandler QXmlReader.errorHandler (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回的错误处理程序或0 ，如果没有被设置。
](qxmlerrorhandler.html)
[**See also**](qxmlerrorhandler.html) [setErrorHandler](qxmlreader.html#setErrorHandler)（ ） 。
```
(bool, bool ok) QXmlReader.feature (self, QString name)
```
这种方法是抽象的，应在任何子类中重新实现。
如果读者有所谓的功能_name_，则返回功能的值。如果不存在此类功能的返回值是不确定的。
If _ok_不为0时：`*`_ok_被设置为True，如果读者有所谓的功能_name_否则`*`_ok_设置为False 。
**See also** [setFeature](qxmlreader.html#setFeature)（）和[hasFeature](qxmlreader.html#hasFeature)（ ） 。
```
bool QXmlReader.hasFeature (self, QString name)
```
这种方法是抽象的，应在任何子类中重新实现。
Returns `true`如果读者有所谓的功能_name_否则返回False 。
**See also** [feature](qxmlreader.html#feature)（）和[setFeature](qxmlreader.html#setFeature)（ ） 。
```
bool QXmlReader.hasProperty (self, QString name)
```
这种方法是抽象的，应在任何子类中重新实现。
如果读者有属性，则返回True_name_否则返回False 。
**See also** [property](qxmlreader.html#property)（）和[setProperty](qxmlreader.html#setProperty)（ ） 。
```
QXmlLexicalHandler QXmlReader.lexicalHandler (self)
```
[
这种方法是抽象的，应在任何子类中重新实现。
返回词法处理程序或0，如果没有被设置。
](qxmllexicalhandler.html)
[**See also**](qxmllexicalhandler.html) [setLexicalHandler](qxmlreader.html#setLexicalHandler)（ ） 。
```
bool QXmlReader.parse (self, QXmlInputSource input)
```
这种方法是抽象的，应在任何子类中重新实现。
读取从XML文档_input_并解析它。返回True如果解析成功，否则返回False 。
```
bool QXmlReader.parse (self, QXmlInputSource input)
```
这种方法是抽象的，应在任何子类中重新实现。
```
(sip.voidptr, bool ok) QXmlReader.property (self, QString name)
```
这种方法是抽象的，应在任何子类中重新实现。
如果读者有物业_name_，这个函数返回的属性的值，否则返回值是不确定的。
If _ok_不为0 ：如果读者有_name_属性`*`_ok_设置为True ，否则`*`_ok_设置为False 。
**See also** [setProperty](qxmlreader.html#setProperty)（）和[hasProperty](qxmlreader.html#hasProperty)（ ） 。
```
QXmlReader.setContentHandler (self, QXmlContentHandler handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置内容处理器_handler_。
**See also** [contentHandler](qxmlreader.html#contentHandler)（ ） 。
```
QXmlReader.setDeclHandler (self, QXmlDeclHandler handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置申报处理程序_handler_。
**See also** [declHandler](qxmlreader.html#declHandler)（ ） 。
```
QXmlReader.setDTDHandler (self, QXmlDTDHandler handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置DTD处理程序_handler_。
**See also** [DTDHandler](qxmlreader.html#DTDHandler)（ ） 。
```
QXmlReader.setEntityResolver (self, QXmlEntityResolver handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置实体解析器_handler_。
**See also** [entityResolver](qxmlreader.html#entityResolver)（ ） 。
```
QXmlReader.setErrorHandler (self, QXmlErrorHandler handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置错误处理程序_handler_。清除错误处理程序，如果_handler_为0。
**See also** [errorHandler](qxmlreader.html#errorHandler)（ ） 。
```
QXmlReader.setFeature (self, QString name, bool value)
```
这种方法是抽象的，应在任何子类中重新实现。
设置所谓的功能_name_为给定的_value_。如果读者不具备该功能没有任何反应。
**See also** [feature](qxmlreader.html#feature)（）和[hasFeature](qxmlreader.html#hasFeature)（ ） 。
```
QXmlReader.setLexicalHandler (self, QXmlLexicalHandler handler)
```
这种方法是抽象的，应在任何子类中重新实现。
设置词法处理程序_handler_。
**See also** [lexicalHandler](qxmlreader.html#lexicalHandler)（ ） 。
```
QXmlReader.setProperty (self, QString name, sip.voidptr value)
```
这种方法是抽象的，应在任何子类中重新实现。
设置属性_name_至_value_。如果读者不具备的属性没有任何反应。
**See also** [property](qxmlreader.html#property)（）和[hasProperty](qxmlreader.html#hasProperty)（ ） 。
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- QStyleOptionTabV2 Class Reference
- QStyleOptionTabV3 Class Reference
- QStyleOptionTabWidgetFrame Class Reference
- QStyleOptionTabWidgetFrameV2 Class Reference
- QStyleOptionTitleBar Class Reference
- QStyleOptionToolBar Class Reference
- QStyleOptionToolBox Class Reference
- QStyleOptionToolBoxV2 Class Reference
- QStyleOptionToolButton Class Reference
- QStyleOptionViewItem Class Reference
- QStyleOptionViewItemV2 Class Reference
- QStyleOptionViewItemV3 Class Reference
- QStyleOptionViewItemV4 Class Reference
- QStylePainter Class Reference
- QSvgGenerator Class Reference
- QSvgRenderer Class Reference
- QSvgWidget Class Reference
- QSwipeGesture Class Reference
- QSyntaxHighlighter Class Reference
- QSysInfo Class Reference
- QSystemLocale Class Reference
- QSystemSemaphore Class Reference
- QSystemTrayIcon Class Reference
- Qt Class Reference
- QTabBar Class Reference
- QTabletEvent Class Reference
- QTableView Class Reference
- QTableWidget Class Reference
- QTableWidgetItem Class Reference
- QTableWidgetSelectionRange Class Reference
- QTabWidget Class Reference
- QTapAndHoldGesture Class Reference
- QTapGesture Class Reference
- QTcpServer Class Reference
- QTcpSocket Class Reference
- QTemporaryFile Class Reference
- QTest Class Reference
- QTextBlock Class Reference
- QTextBlockFormat Class Reference
- QTextBlockGroup Class Reference
- QTextBlockUserData Class Reference
- QTextBoundaryFinder Class Reference
- QTextBrowser Class Reference
- QTextCharFormat Class Reference
- QTextCodec Class Reference
- QTextCursor Class Reference
- QTextDecoder Class Reference
- QTextDocument Class Reference
- QTextDocumentFragment Class Reference
- QTextDocumentWriter Class Reference
- QTextEdit Class Reference
- QTextEncoder Class Reference
- QTextFormat Class Reference
- QTextFragment Class Reference
- QTextFrame Class Reference
- QTextFrameFormat Class Reference
- QTextImageFormat Class Reference
- QTextInlineObject Class Reference
- QTextItem Class Reference
- QTextLayout Class Reference
- QTextLength Class Reference
- QTextLine Class Reference
- QTextList Class Reference
- QTextListFormat Class Reference
- QTextObject Class Reference
- QTextObjectInterface Class Reference
- QTextOption Class Reference
- QTextStream Class Reference
- QTextTable Class Reference
- QTextTableCell Class Reference
- QTextTableCellFormat Class Reference
- QTextTableFormat Class Reference
- QThread Class Reference
- QThreadPool Class Reference
- QTime Class Reference
- QTimeEdit Class Reference
- QTimeLine Class Reference
- QTimer Class Reference
- QTimerEvent Class Reference
- QToolBar Class Reference
- QToolBox Class Reference
- QToolButton Class Reference
- QToolTip Class Reference
- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
- QTranslator Class Reference
- QTreeView Class Reference
- QTreeWidget Class Reference
- QTreeWidgetItem Class Reference
- QTreeWidgetItemIterator Class Reference
- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
- QUndoStack Class Reference
- QUndoView Class Reference
- QUrl Class Reference
- QUrlInfo Class Reference
- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
- QVector3D Class Reference
- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
- QWebElement Class Reference
- QWebElementCollection Class Reference
- QWebFrame Class Reference
- QWebHistory Class Reference
- QWebHistoryInterface Class Reference
- QWebHistoryItem Class Reference
- QWebHitTestResult Class Reference
- QWebInspector Class Reference
- QWebPage Class Reference
- QWebPluginFactory Class Reference
- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
- QWebView Class Reference
- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
- QWidgetItem Class Reference
- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
- QWizardPage Class Reference
- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
- QX11EmbedWidget Class Reference
- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
- QXmlDefaultHandler Class Reference
- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
- QXmlErrorHandler Class Reference
- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
- QXmlItem Class Reference
- QXmlLexicalHandler Class Reference
- QXmlLocator Class Reference
- QXmlName Class Reference
- QXmlNamePool Class Reference
- QXmlNamespaceSupport Class Reference
- QXmlNodeModelIndex Class Reference
- QXmlParseException Class Reference
- QXmlQuery Class Reference
- QXmlReader Class Reference
- QXmlResultItems Class Reference
- QXmlSchema Class Reference
- QXmlSchemaValidator Class Reference
- QXmlSerializer Class Reference
- QXmlSimpleReader Class Reference
- QXmlStreamAttribute Class Reference
- QXmlStreamAttributes Class Reference
- QXmlStreamEntityDeclaration Class Reference
- QXmlStreamEntityResolver Class Reference
- QXmlStreamNamespaceDeclaration Class Reference
- QXmlStreamNotationDeclaration Class Reference
- QXmlStreamReader Class Reference
- QXmlStreamWriter Class Reference