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

<div class="header">
<div class="subTitle">
     javax.activation 
   </div>
<h2 class="title" title="Class URLDataSource">Class URLDataSource</h2>
</div><div class="contentContainer">
<ul class="inheritance">
<li><a href="../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li>javax.activation.URLDataSource</li>
</ul> </li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<dl>
<dt>
         All Implemented Interfaces: 
       </dt>
<dd>
<span><a href="../../javax/activation/DataSource.html" title="javax.activation中的接口">DataSource</a></span>
</dd>
</dl>
<hr/> <br/> <pre>public class <span class="typeNameLabel">URLDataSource</span>
extends <a href="../../java/lang/Object.html" title="class in java.lang">Object</a>
implements <a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a></pre>
<div class="block">
<span>URLDataSource类提供了一个在<code>URL</code>接口中包装<code>URL</code>对象的对象。</span>
<span>URLDataSource简化了JavaBeans激活框架内由URL描述的数据的处理，因为此类可用于创建新的DataHandler。</span>
<span><i>注意：DataHandler对象使用URL构造时，内部将创建一个URLDataSource。</i></span>
</div>
<dl>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
         1.6 
       </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../javax/activation/DataSource.html" title="javax.activation中的接口"><code>DataSource</code></a> ， <a href="../../javax/activation/DataHandler.html" title="javax.activation中的类"><code>DataHandler</code></a></span>
</dd>
</dl> </li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor.summary">
<!-- --> </a> <h3>构造方法摘要</h3>
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
<caption>
<span>构造方法</span>
<span class="tabEnd"> </span>
</caption>
<tbody>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#URLDataSource-java.net.URL-">URLDataSource</a></span>(<a href="../../java/net/URL.html" title="class in java.net">URL</a> url)</code>
<div class="block">
              URLDataSource构造函数。 
            </div> </td>
</tr>
</tbody>
</table> </li>
</ul>
<!-- ========== METHOD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="method.summary">
<!-- --> </a> <h3>方法摘要</h3>
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
<caption>
<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="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor" id="i0">
<td class="colFirst"><code><a href="../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#getContentType--">getContentType</a></span>()</code>
<div class="block">
              返回URL内容类型头字段的值。 
            </div> </td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code><a href="../../java/io/InputStream.html" title="class in java.io">InputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#getInputStream--">getInputStream</a></span>()</code>
<div class="block">
              来自URL的getInputStream方法。 
            </div> </td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code><a href="../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#getName--">getName</a></span>()</code>
<div class="block">
              在用于实例化对象的URL上调用 
             <code>getFile</code>方法。 
            </div> </td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code><a href="../../java/io/OutputStream.html" title="class in java.io">OutputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#getOutputStream--">getOutputStream</a></span>()</code>
<div class="block">
              来自URL的getOutputStream方法。 
            </div> </td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code><a href="../../java/net/URL.html" title="class in java.net">URL</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/activation/URLDataSource.html#getURL--">getURL</a></span>()</code>
<div class="block">
              返回用于创建此DataSource的URL。 
            </div> </td>
</tr>
</tbody>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../java/lang/Object.html#clone--">clone</a>, <a href="../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../java/lang/Object.html#finalize--">finalize</a>, <a href="../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../java/lang/Object.html#notify--">notify</a>, <a href="../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../java/lang/Object.html#toString--">toString</a>, <a href="../../java/lang/Object.html#wait--">wait</a>, <a href="../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../java/lang/Object.html#wait-long-int-">wait</a></code></li>
</ul> </li>
</ul> </li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor.detail">
<!-- --> </a> <h3>构造方法详细信息</h3> <a name="URLDataSource-java.net.URL-">
<!-- --> </a>
<ul class="blockListLast">
<li class="blockList"> <h4>URLDataSource</h4> <pre>public URLDataSource(<a href="../../java/net/URL.html" title="class in java.net">URL</a> url)</pre>
<div class="block">
<span>URLDataSource构造函数。</span>
<span>URLDataSource类将不会打开与URL的连接，直到调用需要它的方法。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>url</code> - 要封装在此对象中的URL。 
           </dd>
</dl> </li>
</ul> </li>
</ul>
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method.detail">
<!-- --> </a> <h3>方法详细信息</h3> <a name="getContentType--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getContentType</h4> <pre>public <a href="../../java/lang/String.html" title="class in java.lang">String</a> getContentType()</pre>
<div class="block">
<span>返回URL内容类型头字段的值。</span>
<span>在检索URLConnection对象后，它调用URL的<code>URLConnection.getContentType</code>方法。</span>
<span><i>注意：此方法尝试在URL上调用<code>openConnection</code>方法。</i></span>
<span><i>如果此方法失败，或者如果内容类型未从URLConnection返回，则getContentType返回“application / octet-stream”作为内容类型。</i></span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../javax/activation/DataSource.html#getContentType--">getContentType</a></code>在界面 
            <code><a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             内容类型。 
           </dd>
</dl> </li>
</ul> <a name="getName--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getName</h4> <pre>public <a href="../../java/lang/String.html" title="class in java.lang">String</a> getName()</pre>
<div class="block">
            在用于实例化对象的URL上调用 
           <code>getFile</code>方法。 
          </div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../javax/activation/DataSource.html#getName--">getName</a></code>在界面 
            <code><a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             调用URL的getFile方法的结果。 
           </dd>
</dl> </li>
</ul> <a name="getInputStream--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getInputStream</h4> <pre>public <a href="../../java/io/InputStream.html" title="class in java.io">InputStream</a> getInputStream()
                           throws <a href="../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
<div class="block">
<span>来自URL的getInputStream方法。</span>
<span>在URL上调用<code>openStream</code>方法。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../javax/activation/DataSource.html#getInputStream--">getInputStream</a></code>在界面 
            <code><a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             InputStream。 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../java/io/IOException.html" title="class in java.io">IOException</a></code>
</dd>
</dl> </li>
</ul> <a name="getOutputStream--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getOutputStream</h4> <pre>public <a href="../../java/io/OutputStream.html" title="class in java.io">OutputStream</a> getOutputStream()
                             throws <a href="../../java/io/IOException.html" title="class in java.io">IOException</a></pre>
<div class="block">
<span>来自URL的getOutputStream方法。</span>
<span>首先尝试获取URL的URLConnection对象。</span>
<span>如果成功，则返回URLConnection上的getOutputStream方法。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../javax/activation/DataSource.html#getOutputStream--">getOutputStream</a></code>在界面 
            <code><a href="../../javax/activation/DataSource.html" title="interface in javax.activation">DataSource</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             OutputStream。 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../java/io/IOException.html" title="class in java.io">IOException</a></code>
</dd>
</dl> </li>
</ul> <a name="getURL--">
<!-- --> </a>
<ul class="blockListLast">
<li class="blockList"> <h4>getURL</h4> <pre>public <a href="../../java/net/URL.html" title="class in java.net">URL</a> getURL()</pre>
<div class="block">
            返回用于创建此DataSource的URL。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             网址。 
           </dd>
</dl> </li>
</ul> </li>
</ul> </li>
</ul>
</div>
</div>