content: /*
   *  Copyright Beijing 58 Information Technology Co.,Ltd.
   *
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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.
   */
  package com.bj58.spat.gaea.client.utility.helper;
  
  import java.io.File;
  import org.w3c.dom.*;
  import javax.xml.parsers.*;
  import javax.xml.xpath.*;
  
  /**
   * XMLHelper
   *
   * @author Service Platform Architecture Team (spat@58.com)
   */
  public class XMLHelper {
  
      public static Element GetXmlDoc(String filePath) {
          DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
          DocumentBuilder db = null;
          try {
              db = dbf.newDocumentBuilder();
          } catch (ParserConfigurationException pce) {
              pce.printStackTrace();
          }
          Document doc = null;
          try {
              File f = new File(filePath);
              doc = db.parse(f);
          } catch (Exception e) {
              e.printStackTrace();
          }
          return (Element) doc.getDocumentElement();
      }
  
      public static Node selectSingleNode(String express, Object source) {
          Node result = null;
          XPathFactory xpathFactory = XPathFactory.newInstance();
          XPath xpath = xpathFactory.newXPath();
          try {
              result = (Node) xpath.evaluate(express, source, XPathConstants.NODE);
          } catch (XPathExpressionException e) {
              e.printStackTrace();
          }
  
          return result;
      }
  
      public static NodeList selectNodes(String express, Object source) {
          NodeList result = null;
          XPathFactory xpathFactory = XPathFactory.newInstance();
          XPath xpath = xpathFactory.newXPath();
          try {
              result = (NodeList) xpath.evaluate(express, source, XPathConstants.NODESET);
          } catch (XPathExpressionException e) {
              e.printStackTrace();
          }
  
          return result;
      }
  }
  