[JAVA] XML 파일 읽기 (How to Read XML File)

# xml 파일

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<?xml version="1.0" encoding="UTF-8"?>

<config>

<xmlhost key="key_value" value="value_value">1</xmlhost>

</config>

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## Readxml.java

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DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

File file = new File("config.xml");

Document xmldoc = builder.parse(file);

Element el = xmldoc.getDocumentElement();

System.out.println(el.getNodeName());

NodeList nodes = el.getChildNodes();

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

Node node = nodes.item(i);

if(node.getNodeType() == Node.ELEMENT_NODE){

System.out.println(node.getNodeName());  //태그 명

System.out.println(node.getTextContent());  //태그 값  -> 1

NamedNodeMap map = node.getAttributes();

if(map.getLength()>0){

System.out.println(map.getNamedItem("key").getNodeValue());  

                                        //key 값(key_value)

System.out.println(map.getNamedItem("value").getNodeValue());

                                         //value 값(value_value) 

}

}

}

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