uTools-Manuals/docs/java/org/xml/sax/helpers/XMLReaderFactory.html

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     org.xml.sax.helpers 
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<h2 class="title" title="Class XMLReaderFactory">Class XMLReaderFactory</h2>
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<li><a href="../../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>org.xml.sax.helpers.XMLReaderFactory</li>
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<hr/> <br/> <pre>public final class <span class="typeNameLabel">XMLReaderFactory</span>
extends <a href="../../../../java/lang/Object.html" title="class in java.lang">Object</a></pre>
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<span>用于创建XML阅读器的工厂。</span>
<blockquote>
<span><em>This module, both source code and documentation, is in the Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> See <a href="http://www.saxproject.org">http://www.saxproject.org</a> for further information.</span>
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<p> <span>此类包含从显式类名称或基于运行时默认值创建XML读取器的静态方法：</span> </p>
<pre>  <span>try {
   XMLReader myReader = XMLReaderFactory.createXMLReader();
 } catch (SAXException e) {
   System.err.println(e.getMessage());
 }</span> </pre>
<p> <span><strong>与解析器捆绑的分发注意事项：</strong>您应该修改无参数<em>createXMLReader的</em>实现，以处理未设置外部配置机制的情况。</span> <span>该方法应该尽可能地在类路径中返回一个解析器，即使没有将其类名称绑定到<code>org.xml.sax.driver</code> ，这样配置机制就可以看到它。</span> </p>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         SAX 2.0 
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<span class="simpleTagLabel">Version:</span>
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         2.0.1（sax2r2） 
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t1"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static <a href="../../../../org/xml/sax/XMLReader.html" title="interface in org.xml.sax">XMLReader</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/xml/sax/helpers/XMLReaderFactory.html#createXMLReader--">createXMLReader</a></span>()</code>
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              尝试从系统默认值创建XMLReader。 
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<td class="colFirst"><code>static <a href="../../../../org/xml/sax/XMLReader.html" title="interface in org.xml.sax">XMLReader</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/xml/sax/helpers/XMLReaderFactory.html#createXMLReader-java.lang.String-">createXMLReader</a></span>(<a href="../../../../java/lang/String.html" title="class in java.lang">String</a> className)</code>
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              尝试从类名创建XML阅读器。 
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<li class="blockList"> <h4>createXMLReader</h4> <pre>public static <a href="../../../../org/xml/sax/XMLReader.html" title="interface in org.xml.sax">XMLReader</a> createXMLReader()
                                 throws <a href="../../../../org/xml/sax/SAXException.html" title="class in org.xml.sax">SAXException</a></pre>
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<span>尝试从系统默认值创建XMLReader。</span>
<span>在可以支持它的环境中，XMLReader类的名称通过按顺序尝试这些选项来确定，并使用成功的第一个选项：</span>
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<li> <span>如果系统属性<code>org.xml.sax.driver</code>具有值，则用作XMLReader类名。</span> </li>
<li> <span>JAR“服务API”用于在运行时可用的jarfile中的<em>META-INF / services / org.xml.sax.driver</em>文件中查找类名。</span> </li>
<li> <span>强烈地鼓励SAX解析器分发提供一个默认的XMLReader类名，只有当前一个选项（在此列表中）不成功时才会生效。</span> </li>
<li> <span>最后，如果<a href="../../../../org/xml/sax/helpers/ParserFactory.html#makeParser--"><code>ParserFactory.makeParser()</code></a>可以返回一个系统默认的SAX1解析器，那个解析器被包裹在一个<a href="../../../../org/xml/sax/helpers/ParserAdapter.html" title="org.xml.sax.helpers中的类"><code>ParserAdapter</code>中</a> 。</span> <span>（这是SAX1环境的迁移帮助，其中<code>org.xml.sax.parser</code>系统属性通常可以使用。）</span> </li>
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<p> <span>在诸如不能支持灵活性的小型嵌入式系统的环境中，可以使用其他确定默认的机制。</span> </p>
<p> <span>请注意，许多Java环境允许在命令行上初始化系统属性。</span> <span>这意味着<em>在大多数情况下</em>为该属性设置好的值可确保对此方法的调用将成功，除非安全策略介入。</span> <span>这也将最大限度地提高应用程序对旧版SAX环境的可移植性，同时这种方法的实现也较少。</span> </p>
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<span class="returnLabel">结果</span>
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             一个新的XMLReader。 
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<span class="throwsLabel">异常</span>
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<code><a href="../../../../org/xml/sax/SAXException.html" title="class in org.xml.sax">SAXException</a></code> - 如果不能识别和实例化默认的XMLReader类。 
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<span class="seeLabel">另请参见：</span>
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<a href="../../../../org/xml/sax/helpers/XMLReaderFactory.html#createXMLReader-java.lang.String-"><code>createXMLReader(java.lang.String)</code></a>
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<li class="blockList"> <h4>createXMLReader</h4> <pre>public static <a href="../../../../org/xml/sax/XMLReader.html" title="interface in org.xml.sax">XMLReader</a> createXMLReader(<a href="../../../../java/lang/String.html" title="class in java.lang">String</a> className)
                                 throws <a href="../../../../org/xml/sax/SAXException.html" title="class in org.xml.sax">SAXException</a></pre>
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<span>尝试从类名创建XML阅读器。</span>
<p> <span>给定一个类名称，该方法尝试加载和实例化该类作为XML读取器。</span> </p>
<p> <span>请注意，这种方法在不允许调用者（可能是小程序）不允许动态加载类的环境中不可用。</span> </p>
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<span class="returnLabel">结果</span>
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             一个新的XML阅读器。 
           </dd>
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<span class="throwsLabel">异常</span>
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<code><a href="../../../../org/xml/sax/SAXException.html" title="class in org.xml.sax">SAXException</a></code> - 如果类无法加载，实例化并转换为XMLReader。 
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<span class="seeLabel">另请参见：</span>
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<a href="../../../../org/xml/sax/helpers/XMLReaderFactory.html#createXMLReader--"><code>createXMLReader()</code></a>
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