Description
Get the text from the given node.
License
Apache License
Parameter
| Parameter | Description |
|---|
| node | the node from which to extract the text |
Exception
| Parameter | Description |
|---|
| IllegalArgumentException | if the first child is not a text node |
Return
the raw text, or the empty string if the element has no children
Declaration
public static String getText(Node node) throws IllegalArgumentException
Method Source Code
//package com.java2s;
/* $HeadURL:: $
* $Id$//from www. j a va2 s . co m
*
* Copyright (c) 2006-2008 by Topaz, Inc.
* http://topazproject.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
public class Main {
/**
* Get the text from the given node. This assumes the node contains a single child that is a text
* node.
*
* @param node the node from which to extract the text
* @return the raw text, or the empty string if the element has no children
* @throws IllegalArgumentException if the first child is not a text node
*/
public static String getText(Node node) throws IllegalArgumentException {
Node text = node.getFirstChild();
if (text == null)
return "";
if (!(text instanceof Text))
throw new IllegalArgumentException("Expected text, but found node '" + text.getNodeName() + "'");
return ((Text) text).getData();
}
/**
* Get the first child element with the given name. This differs from {@link
* org.w3c.dom.Node#getFirstChild Node.getFirstChild} in that this only returns elements.
*
* @param parent the parent node for which to get the first child
* @param name the name of the child element to get; may be null or "*" to indicate the
* first child element of any name
* @return the child, or null if none was found
*/
public static Element getFirstChild(Element parent, String name) {
final String filter = (name != null && !name.equals("*")) ? name : null;
for (Node n = parent.getFirstChild(); n != null; n = n.getNextSibling()) {
if (n.getNodeType() == Node.ELEMENT_NODE && (filter == null || n.getNodeName().equals(filter)))
return (Element) n;
}
return null;
}
/**
* Get the next sibling element with the given name. This differs from {@link
* org.w3c.dom.Node#getNextSibling Node.getNextSibling} in that this only returns elements.
*
* @param node the current node for which to get the next sibling
* @param name the name of the next sibling element to get; may be null or "*" to indicate the
* next sibling of any name
* @return the sibling, or null if none was found
*/
public static Element getNextSibling(Element node, String name) {
final String filter = (name != null && !name.equals("*")) ? name : null;
for (Node n = node.getNextSibling(); n != null; n = n.getNextSibling()) {
if (n.getNodeType() == Node.ELEMENT_NODE && (filter == null || n.getNodeName().equals(filter)))
return (Element) n;
}
return null;
}
}
Related
- getText(Node node)
- getText(Node node)
- getText(Node node)
- getText(Node node)
- getText(Node node)
- getText(Node node)
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- getText(Node node)
- getText(Node node)