Read .XML file

最新推荐文章于 2024-01-04 11:25:43 发布

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#import #file #string #class #null #xml

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本文提供了一个使用Java读取XML文件的示例代码。通过DocumentBuilderFactory和DocumentBuilder解析XML文件，并获取根元素进行基本操作。

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package mytools.readfile;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

/**
* This class is used to read .XML file.
*
* @author WangJunyu
*/
public class ReadXML {

    private String file = "";
    private Document cfgDoc = null;

    public ReadXML(String file) {

        this.file = file;
    }

    public void excute() throws ParserConfigurationException, SAXException, IOException {

        File cfg = new File(file);
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        cfgDoc = db.parse(cfg);

        Element doc = cfgDoc.getDocumentElement();
        System.out.println("Test tead XML file: " +
                            doc.getElementsByTagName("copy").getLength());
    }

    public static void main(String[] args) {

        ReadXML read = new ReadXML("test.xml");
        try {

            read.excute();
        }
        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();
        }
    }
}