使用java NodeList合并xml文件 [英] Merging xml file using java NodeList
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问题描述
我正在尝试合并两个xml文件,如下所示,但我无法获得所需的输出请帮助我谢谢
I'm trying to merge two xml files as shown below but i can't able to get the desired output please help me thank you
Java代码:
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setIgnoringComments(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse(new File("file1.xml"));
Document doc1 = builder.parse(new File("file2.xml"));
NodeList nodes = doc.getElementsByTagName("staff");
NodeList nodes1 = doc1.getElementsByTagName("staff");
for(int i=0;i<nodes1.getLength();i=i+1){
Node n= (Node) doc.importNode(nodes1.item(i), true);
nodes.item(i).getParentNode().appendChild(n);
}
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
StreamResult result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
Writer output = null;
output = new BufferedWriter(new FileWriter("mergedxml.xml"));
String xmlOutput = result.getWriter().toString();
output.write(xmlOutput);
output.close();
System.out.println("merge complete");
File1.xml
File1.xml
<company>
<staff>
<name>john</name>
<phone>465456433</phone>
<email>gmail1</email>
</staff>
</company>
File2.xml
File2.xml
<company>
<staff>
<area>area1</area>
<city>city1</city>
</staff>
</company>
当前输出:
<company>
<staff>
<name>john</name>
<phone>465456433</phone>
<email>gmail1</email>
</staff>
<staff>
<area>area1</area>
<city>city1</city>
</staff>
</company>
预期产出:
<company>
<staff>
<name>john</name>
<phone>465456433</phone>
<email>gmail1</email>
<area>area1</area>
<city>city1</city>
</staff>
</company>
推荐答案
为了自己动手。你应该这样做:
In order to do that on your own. You should do this following :
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("D:\\Loic_Workspace\\Test2\\res\\test.xml"));
doc2 = db.parse(new File("D:\\Loic_Workspace\\Test2\\res\\test2.xml"));
NodeList ndListFirstFile = doc.getElementsByTagName("staff");
Node nodeArea = doc.importNode(doc2.getElementsByTagName("area").item(0), true);
Node nodeCity = doc.importNode(doc2.getElementsByTagName("city").item(0), true);
ndListFirstFile.item(0).appendChild(nodeArea);
ndListFirstFile.item(0).appendChild(nodeCity);
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("D:\\Loic_Workspace\\Test2\\res\\testFinal.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();
}
}
最终输出testFinal.xml:
Final output of testFinal.xml :
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<company>
<staff>
<name>john</name>
<phone>465456433</phone>
<email>gmail1</email>
<area>area1</area>
<city>city1</city>
</staff>
</company>
如你所愿; - )
希望它有所帮助,
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