如何合併兩個XML文件具有相同的參數？

Question

我要合併兩個XML文件（源文件&臨時文件），並把所得到的文件在源文件中和兩個源文件和臨時文件有相同的元素，但與像不同的值：

Source.xml：

<Main> 
    <source> 
     <param> 
      <entry> 
       <key> bla1 </key> 
       <value> bla1 </value> 
      </entry> 
     </param> 
     <Name> name1 </Name> 
    </Source> 
</Main> 

而temp.xml：

<Main> 
    <source> 
     <param> 
      <entry> 
       <key> bla2 </key> 
       <value> bla2 </value> 
      </entry> 
      <entry> 
       <key> bla3 </key> 
       <value> bla3 </value> 
      </entry> 
     </param> 
     <Name> name2 </Name> 
    </Source> 
</Main> 

和所需的輸出，我想它想：

<Main> 
    <source> 
     <param> 
      <entry> 
       <key> bla1 </key> 
       <value> bla1 </value> 
      </entry> 
     </param> 
     <Name> name1 </Name> 
    </Source> 
    <source> 
     <param> 

      <entry> 
       <key> bla2 </key> 
       <value> bla2 </value> 
      </entry> 
      <entry> 
       <key> bla3 </key> 
       <value> bla3 </value> 
      </entry> 
     </param> 
     <Name> name2 </Name> 
    </Source> 
</Main> 

我使用這個代碼，但它簡化版，影響source.xml可言：

import java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.StringWriter; 
import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.parsers.ParserConfigurationException; 
import javax.xml.transform.OutputKeys; 
import javax.xml.transform.Transformer; 
import javax.xml.transform.TransformerException; 
import javax.xml.transform.TransformerFactory; 
import javax.xml.transform.dom.DOMSource; 
import javax.xml.transform.stream.StreamResult; 
import org.w3c.dom.Document; 
import org.w3c.dom.Element; 
import org.w3c.dom.Node; 
import org.w3c.dom.NodeList; 
import org.xml.sax.SAXException; 

public class MergeXml { 

    private static final String fileName = "Source.xml"; 
    private static final String tempName = "temp.xml"; 
    private static final String mainTag = "XmlSource"; 
    private static final String YES = "yes"; 


    public void mergeXML() throws ParserConfigurationException, SAXException, 
      IOException, TransformerException { 

     DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
     DocumentBuilder db = null; 
     Document doc = null; 
     Document doc2 = null; 

     db = dbf.newDocumentBuilder(); 
     doc = db.parse(new File(fileName)); 
     doc2 = db.parse(new File(tempName)); 
     Element tag = doc.createElement(mainTag); 

     NodeList nodeList = doc2.getElementsByTagName("*"); 

     for(int i =0 ; i < nodeList.getLength(); i++){ 

      Node node = nodeList.item(i); 
      if (node.getNodeType() == Node.ELEMENT_NODE) { 
       String nodeName = node.getNodeName(); 
       Element tagChild = doc.createElement((nodeName)); 

       tag.appendChild(tagChild); 
      } 
     } 

     TransformerFactory tFactory = TransformerFactory.newInstance(); 
     Transformer transformer = tFactory.newTransformer(); 
     transformer.setOutputProperty(OutputKeys.INDENT, YES); 

     DOMSource source = new DOMSource(doc); 
     StreamResult result = new StreamResult(new StringWriter()); 
     transformer.transform(source, result); 

     BufferedWriter output = new BufferedWriter(new FileWriter(fileName)); 
     String xmlOutput = result.getWriter().toString(); 
     output.write(xmlOutput); 
     output.close(); 

    } 
} 

我的原始XML如果需要的文件：

<XmlSource> 
     <hostName>api.worldweatheronline.com</hostName> 
     <parameters> 
      <entry> 
       <key>num_of_days</key> 
       <value>1</value> 
      </entry> 
      <entry> 
       <key>q</key> 
       <value>Cairo</value> 
      </entry> 
      <entry> 
       <key>format</key> 
       <value>xml</value> 
      </entry> 
      <entry> 
       <key>key</key> 
       <value>wd63kxr294rcgvbynhaf2z4r</value> 
      </entry> 
     </parameters> 
     <URL> 
     http://api.worldweatheronline.com/free/v1/weather.ashx?q=Cairo&format=xml&num_of_days=1&key=wd63kxr294rcgvbynhaf2z4r 
     </URL> 
     <URLPath>/free/v1/weather.ashx</URLPath> 

Answer 1

是的，它可以合併XML文件。你可以參考下面的鏈接來合併你的文件。在下面的鏈接代碼中進行必要的更改以實現XML的結構。 Merge Two XML Files in Java

Merging xml file using java NodeList

Merging xml file using java NodeList

Answer 2

這裏是代碼片段，您可以使用合併兩個XML。

public static void generateDocument(Document root, Document insertDoc, String toPath, String fromPath) { 

    if (null != root) { 



     try { 
       Node element = getNode(insertDoc, fromPath); 
       Node dest = root.importNode(element, true); 
      Node node = getNode(root, toPath); 
      node.insertBefore(dest, null); 
     } catch (Exception ex) { 
      System.out.println(ex.getMessage()); 
     } 

    } 

} 
public Node getNode(Document doc, String strXpathExpression) 
      throws ParserConfigurationException, SAXException, IOException, 
      XPathExpressionException { 

     XPath xpath = XPathFactory.newInstance().newXPath(); 

     // XPath Query for showing all nodes value 
     XPathExpression expr = xpath.compile(strXpathExpression); 

     Node node = (Node) expr.evaluate(doc, XPathConstants.NODE); 

     return node; 
    } 

因此你appraoch將
1.創建Soruce.xml
2的文件OBJ（OBJ1）創建的test.xml的文件OBJ（OBJ2）和刪除主標籤。

  DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance(); 
      DocumentBuilder builder = domFactory.newDocumentBuilder(); 
      Document doc1 = builder.parse(new File("s1.xml")); 
      Document doc2 = builder.parse(new File("s2.xml")); 
      generateDocument(doc1,doc2,"/Main", "Main/source"); 

1. 調用方法提到generateDocument（OBJ1，OBJ2， 「/主」）

Answer 3

XML文件合併無標籤名稱：

import java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.StringWriter; 
import java.io.Writer; 

import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.parsers.ParserConfigurationException; 
import javax.xml.transform.OutputKeys; 
import javax.xml.transform.Transformer; 
import javax.xml.transform.TransformerException; 
import javax.xml.transform.TransformerFactory; 
import javax.xml.transform.dom.DOMSource; 
import javax.xml.transform.stream.StreamResult; 
import org.w3c.dom.Document; 
import org.w3c.dom.Element; 
import org.w3c.dom.Node; 
import org.w3c.dom.NodeList; 
import org.xml.sax.SAXException; 

public class test { 

public static void mergeXML(){ 


    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
    DocumentBuilder db = null; 
    Document doc = null; 
    Document doc2 = null; 

    try { 
      db = dbf.newDocumentBuilder(); 
      doc = db.parse(new File("f1.xml")); 
      doc2 = db.parse(new File("f2.xml")); 
      NodeList ndListFirstFile = doc.getElementsByTagName("staffs"); 

      Node pndListFirstFile2 = doc2.getElementsByTagName("company").item(0); 
      NodeList pchildren = pndListFirstFile2.getChildNodes(); 
      for(int i=0;i<pchildren.getLength();i++) { 
       if(pchildren.item(i).getNodeType() == Node.ELEMENT_NODE) { 
        Element pelem = (Element)pchildren.item(i); 
        // If your document is namespace aware use localName 
        String plocalName = pelem.getLocalName(); 
        // Tag name returns the localName and the namespace prefix 
        String ptagName= pelem.getTagName(); 
        // do stuff with the children 
        System.out.print(ptagName); 
        Node ndListFirstFile2 = doc2.getElementsByTagName(ptagName).item(0); 
        NodeList children = ndListFirstFile2.getChildNodes(); 
        for(int ii=0;ii<children.getLength();ii++) { 
         if(children.item(ii).getNodeType() == Node.ELEMENT_NODE) { 
          Element elem = (Element)children.item(ii); 
          // If your document is namespace aware use localName 
          String localName = elem.getLocalName(); 
          // Tag name returns the localName and the namespace prefix 
          String tagName= elem.getTagName(); 
          // do stuff with the children 
          System.out.print(tagName); 
          Node nodeArea = doc.importNode(doc2.getElementsByTagName(tagName).item(0), true); 
          ndListFirstFile.item(0).appendChild(nodeArea); 
         } 
        } 
       } 
      } 



      TransformerFactory tFactory = TransformerFactory.newInstance(); 
      Transformer transformer = tFactory.newTransformer(); 
      transformer.setOutputProperty(OutputKeys.INDENT, "yes"); 

      DOMSource source = new DOMSource(doc); 
      StreamResult result = new StreamResult(new StringWriter()); 
      transformer.transform(source, result); 

      Writer output = new BufferedWriter(new FileWriter("f3.xml")); 
      String xmlOutput = result.getWriter().toString(); 
      output.write(xmlOutput); 
      output.close(); 

    } catch (ParserConfigurationException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (SAXException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (TransformerException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 


} 
public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException, TransformerException{ 
    mergeXML(); 
} 

}