addnode.html

来自「java类库详细讲解」· HTML 代码 · 共 174 行

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<TITLE>Adding a Node to a DOM Document
(Java Developers Almanac Example)
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  <h3>
    e539.  
    Adding a Node to a DOM Document</h3>

This example demonstrates how to insert a node into a DOM relative to
another node.  In particular, a text node is inserted around an
element node.


<pre>
    // Create a new DOM document; this method is implemented in
    // <a href="../javax.xml.parsers/CreateDom.html" class="eglink"><font size="-1"><b>e511</b> Creating an Empty DOM Document</font></a>
    Document doc = <font color="#0066ff"><i>createDomDocument()</i></font>;
    
    // Insert the root element node
    Element element = doc.createElement(<font color="#0066ff"><i>"root"</i></font>);
    doc.appendChild(element);
    
    // Insert a comment in front of the element node
    Comment comment = doc.createComment(<font color="#0066ff"><i>"a comment"</i></font>);
    doc.insertBefore(comment, element);
    
    // Add a text node to the element
    element.appendChild(doc.createTextNode(<font color="#0066ff"><i>"D"</i></font>));
    
    // Add a text node to the beginning of the element
    element.insertBefore(doc.createTextNode(<font color="#0066ff"><i>"A"</i></font>), element.getFirstChild());
    
    // Add a text node before the last child of the element
    element.insertBefore(doc.createTextNode(<font color="#0066ff"><i>"C"</i></font>), element.getLastChild());
    
    // Add another element after the first child of the root element
    Element element2 = doc.createElement(<font color="#0066ff"><i>"item"</i></font>);
    element.insertBefore(element2, element.getFirstChild().getNextSibling());
    
    // Add a text node in front of the new item element
    element2.getParentNode().insertBefore(doc.createTextNode(<font color="#0066ff"><i>"B"</i></font>), element2);
    
</pre>
This is the resulting XML:

<pre>
    &lt;?xml version="1.0" encoding="UTF-8"?&gt;
    &lt;!--a comment--&gt;&lt;root&gt;AB&lt;item/&gt;CD&lt;/root&gt;
</pre>
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            &nbsp;Related Examples
        </font></td>
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e540. <a class="eglink" href="AddCdata.html?l=rel">
    Adding a CDATA Section to a DOM Document
</a>
<br>

e541. <a class="eglink" href="AddComment.html?l=rel">
    Adding a Comment to a DOM Document
</a>
<br>

e542. <a class="eglink" href="AddPi.html?l=rel">
    Adding a Processing Instruction to a DOM Document
</a>
<br>

e543. <a class="eglink" href="AddText.html?l=rel">
    Adding a Text Node to a DOM Document
</a>
<br>

e544. <a class="eglink" href="RemNode.html?l=rel">
    Removing a Node from a DOM Document
</a>
<br>


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<br>
        See also: 
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Element%20Attributes">
    Element Attributes
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Elements">
    Elements
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Getting%20Nodes">
    Getting Nodes
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Text%20Nodes">
    Text Nodes
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#XPath">
    XPath
</a>&nbsp;&nbsp;

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