Java XPath Create xPathSearch(String input, String expression)

Description

x Path Search

License

Open Source License

Declaration

public static String xPathSearch(String input, String expression) throws Exception 

Method Source Code

//package com.java2s;
/*/*from ww w. j  a v a2  s.  co  m*/
chatter-bot-api
Copyright (C) 2011 pierredavidbelanger@gmail.com
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.io.ByteArrayInputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;

public class Main {
    public static String xPathSearch(String input, String expression) throws Exception {
        DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        XPath xPath = XPathFactory.newInstance().newXPath();
        XPathExpression xPathExpression = xPath.compile(expression);
        Document document = documentBuilder.parse(new ByteArrayInputStream(input.getBytes("UTF-8")));
        return (String) xPathExpression.evaluate(document, XPathConstants.STRING);
    }
}

Related

1. xpath(String xml, String xpath)
2. xPath(String xPath)
3. xpathNode(Node node, String xpath)
4. xpathNodes(Node node, String expression)
5. xPathNodes(String expr, Object context)