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<section id="module-xml.sax.xmlreader">
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<span id="xml-sax-xmlreader-interface-for-xml-parsers"></span><h1><a class="reference internal" href="#module-xml.sax.xmlreader" title="xml.sax.xmlreader: Interface which SAX-compliant XML parsers must implement."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.xmlreader</span></code></a> --- 用于 XML 解析器的接口<a class="headerlink" href="#module-xml.sax.xmlreader" title="永久链接至标题">¶</a></h1>
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<p><strong>源代码:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.8/Lib/xml/sax/xmlreader.py">Lib/xml/sax/xmlreader.py</a></p>
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<p>SAX 解析器实现了 <a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> 接口。 它们是在一个 Python 模块中实现的，该模块必须提供一个 <code class="xref py py-func docutils literal notranslate"><span class="pre">create_parser()</span></code> 函数。 该函数由 <a class="reference internal" href="xml.sax.html#xml.sax.make_parser" title="xml.sax.make_parser"><code class="xref py py-func docutils literal notranslate"><span class="pre">xml.sax.make_parser()</span></code></a> 不带参数地发起调用来创建新的解析器对象。</p>
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<dl class="class">
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<dt id="xml.sax.xmlreader.XMLReader">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">XMLReader</code><a class="headerlink" href="#xml.sax.xmlreader.XMLReader" title="永久链接至目标">¶</a></dt>
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<dd><p>可由 SAX 解析器继承的基类。</p>
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</dd></dl>
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<dl class="class">
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<dt id="xml.sax.xmlreader.IncrementalParser">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">IncrementalParser</code><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser" title="永久链接至目标">¶</a></dt>
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<dd><p>在某些情况下，最好不要一次性地解析输入源，而是在可用的时候分块送入。 请注意读取器通常不会读取整个文件，它同样也是分块读取的； 并且 <code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code> 在处理完整个文档之前不会返回。 所以如果不希望 <code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code> 出现阻塞行为则应当使用这些接口。</p>
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<p>当解析器被实例化时它已准备好立即开始接受来自 feed 方法的数据。 在通过调用 close 方法结束解析时 reset 方法也必须被调用以使解析器准备好接受新的数据，无论它是来自于 feed 还是使用 parse 方法。</p>
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<p>请注意这些方法 <em>不可</em> 在解析期间被调用，即在 parse 被调用之后及其返回之前。</p>
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<p>默认情况下，该类还使用 IncrementalParser 接口的 feed, close 和 reset 方法来实现 XMLReader 接口的 parse 方法以方便 SAX 2.0 驱动的编写者。</p>
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</dd></dl>
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<dl class="class">
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<dt id="xml.sax.xmlreader.Locator">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">Locator</code><a class="headerlink" href="#xml.sax.xmlreader.Locator" title="永久链接至目标">¶</a></dt>
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<dd><p>用于关联一个 SAX 事件与一个文档位置的接口。 定位器对象只有在调用 DocumentHandler 的方法期间才会返回有效的结果；在其他任何时候，结果都是不可预测的。 如果信息不可用，这些方法可能返回 <code class="docutils literal notranslate"><span class="pre">None</span></code>。</p>
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</dd></dl>
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<dl class="class">
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<dt id="xml.sax.xmlreader.InputSource">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">InputSource</code><span class="sig-paren">(</span><em class="sig-param">system_id=None</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource" title="永久链接至目标">¶</a></dt>
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<dd><p><a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> 读取实体所需信息的封装。</p>
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<p>这个类可能包括了关于公有标识符、系统标识符、字节流（可能带有字符编码格式信息）和/或一个实体的字符流的信息。</p>
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<p>应用程序将创建这个类的对象以便在 <a class="reference internal" href="#xml.sax.xmlreader.XMLReader.parse" title="xml.sax.xmlreader.XMLReader.parse"><code class="xref py py-meth docutils literal notranslate"><span class="pre">XMLReader.parse()</span></code></a> 方法中使用或是用于从 EntityResolver.resolveEntity 返回值。</p>
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<p><a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 属于应用程序，<a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> 不能修改从应用程序传递给它的 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 对象，但它可以创建副本并进行修改。</p>
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</dd></dl>
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<dl class="class">
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<dt id="xml.sax.xmlreader.AttributesImpl">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">AttributesImpl</code><span class="sig-paren">(</span><em class="sig-param">attrs</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesImpl" title="永久链接至目标">¶</a></dt>
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<dd><p>这是 <code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> 接口（参见 <a class="reference internal" href="#attributes-objects"><span class="std std-ref">Attributes 接口</span></a> 一节）的具体实现。 这是一个 <code class="xref py py-meth docutils literal notranslate"><span class="pre">startElement()</span></code> 调用中的元素属性的字典类对象。 除了最有用处的字典操作，它还支持接口所描述的一些其他方法。 该类的对象应当由读取器来实例化；<em>attrs</em> 必须为包含从属性名到属性值的映射的字典类对象。</p>
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</dd></dl>
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<dl class="class">
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<dt id="xml.sax.xmlreader.AttributesNSImpl">
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<em class="property">class </em><code class="sig-prename descclassname">xml.sax.xmlreader.</code><code class="sig-name descname">AttributesNSImpl</code><span class="sig-paren">(</span><em class="sig-param">attrs</em>, <em class="sig-param">qnames</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNSImpl" title="永久链接至目标">¶</a></dt>
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<dd><p>可感知命名空间的 <a class="reference internal" href="#xml.sax.xmlreader.AttributesImpl" title="xml.sax.xmlreader.AttributesImpl"><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesImpl</span></code></a> 变体形式，它将被传递给 <code class="xref py py-meth docutils literal notranslate"><span class="pre">startElementNS()</span></code>。 它派生自 <a class="reference internal" href="#xml.sax.xmlreader.AttributesImpl" title="xml.sax.xmlreader.AttributesImpl"><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesImpl</span></code></a>，但会将属性名称解读为 <em>namespaceURI</em> 和 <em>localname</em> 二元组。 此外，它还提供了一些期望接收在原始文档中出现的限定名称的方法。 这个类实现了 <code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> 接口（参见 <a class="reference internal" href="#attributes-ns-objects"><span class="std std-ref">AttributesNS 接口</span></a> 一节）。</p>
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</dd></dl>
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<section id="xmlreader-objects">
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<span id="id1"></span><h2>XMLReader 对象<a class="headerlink" href="#xmlreader-objects" title="永久链接至标题">¶</a></h2>
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<p><a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> 接口支持下列方法:</p>
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<dl class="method">
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<dt id="xml.sax.xmlreader.XMLReader.parse">
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<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">parse</code><span class="sig-paren">(</span><em class="sig-param">source</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.parse" title="永久链接至目标">¶</a></dt>
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<dd><p>处理输入源，产生 SAX 事件。 <em>source</em> 对象可以是一个系统标识符（标识输入源的字符串 -- 通常为文件名或 URL）, <a class="reference internal" href="pathlib.html#pathlib.Path" title="pathlib.Path"><code class="xref py py-class docutils literal notranslate"><span class="pre">pathlib.Path</span></code></a> 或 <a class="reference internal" href="../glossary.html#term-path-like-object"><span class="xref std std-term">路径类</span></a> 对象，或者是 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 对象。 当 <a class="reference internal" href="#xml.sax.xmlreader.XMLReader.parse" title="xml.sax.xmlreader.XMLReader.parse"><code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code></a> 返回时，输入会被全部处理完成，解析器对象可以被丢弃或重置。</p>
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<div class="versionchanged">
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<p><span class="versionmodified changed">在 3.5 版更改: </span>添加了对字符流的支持。</p>
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</div>
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<div class="versionchanged">
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<p><span class="versionmodified changed">在 3.8 版更改: </span>增加了对路径类对象的支持。</p>
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</div>
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</dd></dl>
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<dl class="method">
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<dt id="xml.sax.xmlreader.XMLReader.getContentHandler">
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<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getContentHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getContentHandler" title="永久链接至目标">¶</a></dt>
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<dd><p>返回当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a>。</p>
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</dd></dl>
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<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setContentHandler">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setContentHandler</code><span class="sig-paren">(</span><em class="sig-param">handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setContentHandler" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a>。 如果没有设置 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a>，内容事件将被丢弃。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.getDTDHandler">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getDTDHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getDTDHandler" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setDTDHandler">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setDTDHandler</code><span class="sig-paren">(</span><em class="sig-param">handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setDTDHandler" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a>。 如果没有设置 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a>，DTD 事件将被丢弃。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.getEntityResolver">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getEntityResolver</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getEntityResolver" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setEntityResolver">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setEntityResolver</code><span class="sig-paren">(</span><em class="sig-param">handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setEntityResolver" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a>。 如果没有设置 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a>，尝试解析一个外部实体将导致打开该实体的系统标识符，并且如果它不可用则操作将失败。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.getErrorHandler">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getErrorHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getErrorHandler" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前的 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ErrorHandler" title="xml.sax.handler.ErrorHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ErrorHandler</span></code></a>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setErrorHandler">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setErrorHandler</code><span class="sig-paren">(</span><em class="sig-param">handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setErrorHandler" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置当前的错误处理器。 如果没有设置 <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ErrorHandler" title="xml.sax.handler.ErrorHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ErrorHandler</span></code></a>，错误将作为异常被引发，并将打印警告信息。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setLocale">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setLocale</code><span class="sig-paren">(</span><em class="sig-param">locale</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setLocale" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>允许应用程序为错误和警告设置语言区域。</p>
|
||
<p>SAX 解析器不要求为错误和警告提供本地化信息；但是如果它们无法支持所请求的语言区域，则必须引发一个 SAX 异常。 应用程序可以在解析的中途请求更改语言区域。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.getFeature">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getFeature</code><span class="sig-paren">(</span><em class="sig-param">featurename</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getFeature" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>featurename</em> 特性的当前设置。 如果特性无法被识别，则会引发 <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code>。 在 <a class="reference internal" href="xml.sax.handler.html#module-xml.sax.handler" title="xml.sax.handler: Base classes for SAX event handlers."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.handler</span></code></a> 模块中列出了常见的特性名称。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setFeature">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setFeature</code><span class="sig-paren">(</span><em class="sig-param">featurename</em>, <em class="sig-param">value</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setFeature" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>将 <em>featurename</em> 设为 <em>value</em>。 如果特性无法被识别，则会引发 <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code>。 如果特性或其设置不被解析器所支持，则会引发 <em>SAXNotSupportedException</em>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.getProperty">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">getProperty</code><span class="sig-paren">(</span><em class="sig-param">propertyname</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getProperty" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>propertyname</em> 属性的当前设置。 如果属性无法被识别，则会引发 <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code>。 在 <a class="reference internal" href="xml.sax.handler.html#module-xml.sax.handler" title="xml.sax.handler: Base classes for SAX event handlers."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.handler</span></code></a> 模块中列出了常见的属性名称。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.XMLReader.setProperty">
|
||
<code class="sig-prename descclassname">XMLReader.</code><code class="sig-name descname">setProperty</code><span class="sig-paren">(</span><em class="sig-param">propertyname</em>, <em class="sig-param">value</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setProperty" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>将 <em>propertyname</em> 设为 <em>value</em>。 如果属性无法被识别，则会引发 <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code>。 如果属性或其设置不被解析器所支持，则会引发 <em>SAXNotSupportedException</em>。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="incrementalparser-objects">
|
||
<span id="incremental-parser-objects"></span><h2>IncrementalParser 对象<a class="headerlink" href="#incrementalparser-objects" title="永久链接至标题">¶</a></h2>
|
||
<p><a class="reference internal" href="#xml.sax.xmlreader.IncrementalParser" title="xml.sax.xmlreader.IncrementalParser"><code class="xref py py-class docutils literal notranslate"><span class="pre">IncrementalParser</span></code></a> 的实例额外提供了下列方法:</p>
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.IncrementalParser.feed">
|
||
<code class="sig-prename descclassname">IncrementalParser.</code><code class="sig-name descname">feed</code><span class="sig-paren">(</span><em class="sig-param">data</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.feed" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>处理 <em>data</em> 的一个分块。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.IncrementalParser.close">
|
||
<code class="sig-prename descclassname">IncrementalParser.</code><code class="sig-name descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.close" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>确定文档的结尾。 这将检查只能在结尾处检查的格式是否良好的条件，发起调用处理程序，并可能会清理在解析期间分配的资源。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.IncrementalParser.reset">
|
||
<code class="sig-prename descclassname">IncrementalParser.</code><code class="sig-name descname">reset</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.reset" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>此方法会在调用 close 来重置解析器以便其准备好解析新的文档之后被调用。 在 close 之后未调用 reset 即调用 parse 或 feed 的结果是未定义的。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="locator-objects">
|
||
<span id="id2"></span><h2>Locator 对象<a class="headerlink" href="#locator-objects" title="永久链接至标题">¶</a></h2>
|
||
<p><a class="reference internal" href="#xml.sax.xmlreader.Locator" title="xml.sax.xmlreader.Locator"><code class="xref py py-class docutils literal notranslate"><span class="pre">Locator</span></code></a> 的实例提供了下列方法:</p>
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Locator.getColumnNumber">
|
||
<code class="sig-prename descclassname">Locator.</code><code class="sig-name descname">getColumnNumber</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getColumnNumber" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前事件开始位置的列号。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Locator.getLineNumber">
|
||
<code class="sig-prename descclassname">Locator.</code><code class="sig-name descname">getLineNumber</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getLineNumber" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前事件开始位置的行号。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Locator.getPublicId">
|
||
<code class="sig-prename descclassname">Locator.</code><code class="sig-name descname">getPublicId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getPublicId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前事件的公有标识符。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Locator.getSystemId">
|
||
<code class="sig-prename descclassname">Locator.</code><code class="sig-name descname">getSystemId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getSystemId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回当前事件的系统标识符。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="inputsource-objects">
|
||
<span id="input-source-objects"></span><h2>InputSource 对象<a class="headerlink" href="#inputsource-objects" title="永久链接至标题">¶</a></h2>
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.setPublicId">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">setPublicId</code><span class="sig-paren">(</span><em class="sig-param">id</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setPublicId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置该 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的公有标识符。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.getPublicId">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">getPublicId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getPublicId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回此 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的公有标识符。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.setSystemId">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">setSystemId</code><span class="sig-paren">(</span><em class="sig-param">id</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setSystemId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置此 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的系统标识符。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.getSystemId">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">getSystemId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getSystemId" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回此 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的系统标识符。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.setEncoding">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">setEncoding</code><span class="sig-paren">(</span><em class="sig-param">encoding</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setEncoding" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置此 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的字符编码格式。</p>
|
||
<p>编码格式必须是 XML 编码声明可接受的字符串（参见 XML 建议规范第 4.3.3 节）。</p>
|
||
<p>如果 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 还包含一个字符流则 <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> 的 encoding 属性会被忽略。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.getEncoding">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">getEncoding</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getEncoding" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>获取此 InputSource 的字符编码格式。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.setByteStream">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">setByteStream</code><span class="sig-paren">(</span><em class="sig-param">bytefile</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setByteStream" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置此输入源的字节流（为 <a class="reference internal" href="../glossary.html#term-binary-file"><span class="xref std std-term">binary file</span></a> 对象）。</p>
|
||
<p>如果还指定了一个字符流被则 SAX 解析器会忽略此设置，但它将优先使用字节流而不是自己打开一个 URI 连接。</p>
|
||
<p>如果应用程序知道字节流的字符编码格式，它应当使用 setEncoding 方法来设置它。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.getByteStream">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">getByteStream</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getByteStream" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>获取此输入源的字节流。</p>
|
||
<p>getEncoding 方法将返回该字节流的字符编码格式，如果未知则返回 <code class="docutils literal notranslate"><span class="pre">None</span></code>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.setCharacterStream">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">setCharacterStream</code><span class="sig-paren">(</span><em class="sig-param">charfile</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setCharacterStream" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置此输入源的字符流 (为 <a class="reference internal" href="../glossary.html#term-text-file"><span class="xref std std-term">text file</span></a> 对象)。</p>
|
||
<p>如果指定了一个字符流，SAX 解析器将忽略任何字节流并且不会尝试打开一个指向系统标识符的 URI 连接。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.InputSource.getCharacterStream">
|
||
<code class="sig-prename descclassname">InputSource.</code><code class="sig-name descname">getCharacterStream</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getCharacterStream" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>获取此输入源的字符流。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="the-attributes-interface">
|
||
<span id="attributes-objects"></span><h2><code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> 接口<a class="headerlink" href="#the-attributes-interface" title="永久链接至标题">¶</a></h2>
|
||
<p><code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> 对象实现了一部分 <a class="reference internal" href="../glossary.html#term-mapping"><span class="xref std std-term">映射协议</span></a>，包括 <code class="xref py py-meth docutils literal notranslate"><span class="pre">copy()</span></code>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">get()</span></code>, <a class="reference internal" href="../reference/datamodel.html#object.__contains__" title="object.__contains__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__contains__()</span></code></a>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">items()</span></code>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">keys()</span></code> 和 <code class="xref py py-meth docutils literal notranslate"><span class="pre">values()</span></code> 等方法。 还提供了下列方法:</p>
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Attributes.getLength">
|
||
<code class="sig-prename descclassname">Attributes.</code><code class="sig-name descname">getLength</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getLength" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回属性的数量。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Attributes.getNames">
|
||
<code class="sig-prename descclassname">Attributes.</code><code class="sig-name descname">getNames</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getNames" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回属性的名称。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Attributes.getType">
|
||
<code class="sig-prename descclassname">Attributes.</code><code class="sig-name descname">getType</code><span class="sig-paren">(</span><em class="sig-param">name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getType" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回属性 <em>name</em> 的类型，通常为 <code class="docutils literal notranslate"><span class="pre">'CDATA'</span></code>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.Attributes.getValue">
|
||
<code class="sig-prename descclassname">Attributes.</code><code class="sig-name descname">getValue</code><span class="sig-paren">(</span><em class="sig-param">name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getValue" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回属性 <em>name</em> 的值。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="the-attributesns-interface">
|
||
<span id="attributes-ns-objects"></span><h2><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> 接口<a class="headerlink" href="#the-attributesns-interface" title="永久链接至标题">¶</a></h2>
|
||
<p>此接口是 <code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> 接口（参见 <a class="reference internal" href="#attributes-objects"><span class="std std-ref">Attributes 接口</span></a> 章节）的一个子类型。 那个接口所支持的所有方法在 <code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> 对象上也都可用。</p>
|
||
<p>下列方法也是可用的:</p>
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.AttributesNS.getValueByQName">
|
||
<code class="sig-prename descclassname">AttributesNS.</code><code class="sig-name descname">getValueByQName</code><span class="sig-paren">(</span><em class="sig-param">name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getValueByQName" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回一个限定名称的值。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.AttributesNS.getNameByQName">
|
||
<code class="sig-prename descclassname">AttributesNS.</code><code class="sig-name descname">getNameByQName</code><span class="sig-paren">(</span><em class="sig-param">name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getNameByQName" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回限定名称 <em>name</em> 的 <code class="docutils literal notranslate"><span class="pre">(namespace,</span> <span class="pre">localname)</span></code> 对。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.AttributesNS.getQNameByName">
|
||
<code class="sig-prename descclassname">AttributesNS.</code><code class="sig-name descname">getQNameByName</code><span class="sig-paren">(</span><em class="sig-param">name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getQNameByName" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <code class="docutils literal notranslate"><span class="pre">(namespace,</span> <span class="pre">localname)</span></code> 对的限定名称。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="xml.sax.xmlreader.AttributesNS.getQNames">
|
||
<code class="sig-prename descclassname">AttributesNS.</code><code class="sig-name descname">getQNames</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getQNames" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回所有属性的限定名称。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
</section>
|
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|
||
<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.xmlreader</span></code> --- 用于 XML 解析器的接口</a><ul>
|
||
<li><a class="reference internal" href="#xmlreader-objects">XMLReader 对象</a></li>
|
||
<li><a class="reference internal" href="#incrementalparser-objects">IncrementalParser 对象</a></li>
|
||
<li><a class="reference internal" href="#locator-objects">Locator 对象</a></li>
|
||
<li><a class="reference internal" href="#inputsource-objects">InputSource 对象</a></li>
|
||
<li><a class="reference internal" href="#the-attributes-interface"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> 接口</a></li>
|
||
<li><a class="reference internal" href="#the-attributesns-interface"><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> 接口</a></li>
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