uTools-Manuals/docs/java/javax/activation/DataContentHandler.html

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     javax.activation 
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<h2 class="title" title="Interface DataContentHandler">Interface DataContentHandler</h2>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">DataContentHandler</span></pre>
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<span>DataContentHandler接口由可用于扩展DataHandler实现可传输接口的功能的对象实现。</span>
<span>通过<code>DataContentHandlers</code>框架可以扩展，将流转换为对象，并将对象写入流。</span>
<p> <span>应用程序通常不直接在DataContentHandlers中调用方法。</span> <span>相反，应用程序调用DataHandler中的等效方法。</span> <span>DataHandler将尝试使用当前的DataContentHandlerFactory找到与其MIME类型相对应的适当的DataContentHandler。</span> <span>DataHandler然后调用DataContentHandler中的方法。</span> </p>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         1.6 
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t3"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/DataContentHandler.html#getContent-javax.activation.DataSource-">getContent</a></span>(<a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a> ds)</code>
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              以最优选的形式返回表示数据的对象。 
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<td class="colFirst"><code><a href="../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/DataContentHandler.html#getTransferData-java.awt.datatransfer.DataFlavor-javax.activation.DataSource-">getTransferData</a></span>(<a href="../../java/awt/datatransfer/DataFlavor.html" title="class in java.awt.datatransfer">DataFlavor</a> df, <a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a> ds)</code>
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              返回表示要传输的数据的对象。 
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<td class="colFirst"><code><a href="../../java/awt/datatransfer/DataFlavor.html" title="class in java.awt.datatransfer">DataFlavor</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/DataContentHandler.html#getTransferDataFlavors--">getTransferDataFlavors</a></span>()</code>
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              返回一个DataFlavor对象数组，指示可以提供数据的风格。 
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/DataContentHandler.html#writeTo-java.lang.Object-java.lang.String-java.io.OutputStream-">writeTo</a></span>(<a href="../../java/lang/Object.html" title="class in java.lang">Object</a> obj, <a href="../../java/lang/String.html" title="class in java.lang">String</a> mimeType, <a href="../../java/io/OutputStream.html" title="class in java.io">OutputStream</a> os)</code>
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              将对象转换为指定MIME类型的字节流，并将其写入输出流。 
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<li class="blockList"> <h4>getTransferDataFlavors</h4> <pre><a href="../../java/awt/datatransfer/DataFlavor.html" title="class in java.awt.datatransfer">DataFlavor</a>[] getTransferDataFlavors()</pre>
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            返回一个DataFlavor对象数组，指示可以提供数据的风格。数组应根据提供数据的偏好（从最丰富的描述到最少描述）排序。 
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<span class="returnLabel">结果</span>
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             DataFlavors。 
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<li class="blockList"> <h4>getTransferData</h4> <pre><a href="../../java/lang/Object.html" title="class in java.lang">Object</a> getTransferData(<a href="../../java/awt/datatransfer/DataFlavor.html" title="class in java.awt.datatransfer">DataFlavor</a> df,
                       <a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a> ds)
                throws <a href="../../java/awt/datatransfer/UnsupportedFlavorException.html" title="class in java.awt.datatransfer">UnsupportedFlavorException</a>,
                       <a href="../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
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<span>返回表示要传输的数据的对象。</span>
<span>返回的对象的类由flavor的表示类定义。</span>
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<span class="paramLabel">参数</span>
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<code>df</code> - 表示请求类型的DataFlavor。 
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<code>ds</code> - 表示要转换的数据的DataSource。 
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<span class="returnLabel">结果</span>
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             构造的对象。 
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<span class="throwsLabel">异常</span>
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<code><a href="../../java/awt/datatransfer/UnsupportedFlavorException.html" title="class in java.awt.datatransfer">UnsupportedFlavorException</a></code> - 如果处理程序不支持请求的风味 
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<code><a href="../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果无法访问数据 
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<li class="blockList"> <h4>getContent</h4> <pre><a href="../../java/lang/Object.html" title="class in java.lang">Object</a> getContent(<a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a> ds)
           throws <a href="../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
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<span>以最优选的形式返回表示数据的对象。</span>
<span>通常这将是<code>getTransferDataFlavors</code>方法返回的第一个DataFlavor描述的形式。</span>
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<span class="paramLabel">参数</span>
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<code>ds</code> - 表示要转换的数据的DataSource。 
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<span class="returnLabel">结果</span>
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             构造的对象。 
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<span class="throwsLabel">异常</span>
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<code><a href="../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 如果无法访问数据 
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<li class="blockList"> <h4>writeTo</h4> <pre>void writeTo(<a href="../../java/lang/Object.html" title="class in java.lang">Object</a> obj,
             <a href="../../java/lang/String.html" title="class in java.lang">String</a> mimeType,
             <a href="../../java/io/OutputStream.html" title="class in java.io">OutputStream</a> os)
      throws <a href="../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
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            将对象转换为指定MIME类型的字节流，并将其写入输出流。 
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<span class="paramLabel">参数</span>
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<code>obj</code> - 要转换的对象。 
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<code>mimeType</code> - 生成的字节流所请求的MIME类型。 
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<code>os</code> - 写入转换后的字节流的输出流。 
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<span class="throwsLabel">异常</span>
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<code><a href="../../java/io/IOException.html" title="class in java.io">IOException</a></code> - 写入流的错误 
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