java - 如何使用 Java 从属性 xml 中获取值？

Question

如何使用 Java 从属性 xml 中获取值？

我需要使用我列出的 java 方法获取具有 key=password 的元素的值，进而将 Helllo123 输出到控制台窗口。

属性 XML 文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>Properties Example</comment>
<entry key="myvoucherDummySearchTerm">www.example.com</entry>
<entry key="password">Hello123</entry>
</properties>

JAVA方法:

public class ChangeToXml {

    public static void main(String[] args) throws IOException {
        Properties p = new Properties();
        FileInputStream fi = new FileInputStream(Base_Page.getConstant(Constant.CONFIG_PROPERTIES_DIRECTORY));
        p.load(fi);

        FileOutputStream fos = new FileOutputStream("properties.xml");
        p.storeToXML(fos, "Properties Example");

        testMethod();
    }

    public static void testMethod() {

        try {

        File fXmlFile = new File("C://Users//joe.blogs//Desktop//AutoFramework//AutoFramework//properties.xml");
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(fXmlFile);

        doc.getDocumentElement().normalize();

        System.out.println("Root element :" + doc.getDocumentElement().getNodeName());

        NodeList nList = doc.getElementsByTagName("staff");

        System.out.println("----------------------------");

        for (int temp = 0; temp < nList.getLength(); temp++) {

            Node nNode = nList.item(temp);

            System.out.println("\nCurrent Element :" + nNode.getNodeName());

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

                Element eElement = (Element) nNode;
                System.out.println("Staff id : " + eElement.getElementsByTagName("password").item(0).getTextContent());
            }
        }
        } catch (Exception e) {
        e.printStackTrace();
        }
      }

}

Answer 1

这与您今天的其他问题有关吗？如果是，我认为您正在考虑将不应该复杂化的地方。

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;


public class ChangeToXml {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        Properties p = new Properties();
        //load from your original file;
        FileInputStream inputProps = new FileInputStream("C:\\tmp\\config.properties");
        p.load(inputProps);
        //store in xml format
        FileOutputStream outputXml = new FileOutputStream("C:\\tmp\\properties.xml");
        p.storeToXML(outputXml, "Properties Example");
        //load from xml
        FileInputStream inputXml = new FileInputStream("C:\\tmp\\properties.xml");
        p.loadFromXML(inputXml);
        // get key value pair in the same way as from your original file
        String browser = p.getProperty("browser");
        String url = p.getProperty("url");

        System.out.println("browser: " + browser);
        System.out.println("url: " + url);
    }
}