下面是本地xml文件的内容
<configuration>
<property>
<name>test</name>
<value>A</value>
</property>
</configuration>
如何在java中读取值“A”? 这是我在 Java 中测试的代码
Properties properties = new Properties();
FileInputStream fis = new FileInputStream("path to file");
properties.load(fis);
String test = properties.getProperty("test");
System.out.println(test);
是java代码有问题吗?我似乎无法将名称与值联系起来。此外,我无法读取属性值,因为真实文件包含多对名称-值。
File file = new File("path to file");
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document dom = documentBuilder.parse(file);
Element docEle = dom.getDocumentElement();
NodeList nl = docEle.getChildNodes();
ArrayList<String> names = new ArrayList<String>();
ArrayList<String> values = new ArrayList<String>();
if (nl != null) {
int length = nl.getLength();
for (int i = 0; i < length; i++) {
if (nl.item(i).getNodeType() == Node.ELEMENT_NODE) {
Element el = (Element) nl.item(i);
if (el.getNodeName().contains("configuration")) {
names.add( el.getElementsByTagName("name").item(0).getTextContent());
System.out.println(el.getElementsByTagName("name").item(0).getTextContent());
values.add( el.getElementsByTagName("value").item(0).getTextContent());
System.out.println(el.getElementsByTagName("value").item(0).getTextContent());
}
}
}
}
最佳答案
你可以这样做:
File file = new File("path to file");
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse(file);
document.getDocumentElement().normalize();
Element docEle = document.getDocumentElement();
NodeList nl = docEle.getElementsByTagName("property");
ArrayList names = new ArrayList();
ArrayList values = new ArrayList();
if (nl != null) {
int length = nl.getLength();
//System.out.println(length);
for (int i = 0; i < length; i++) {
if (nl.item(i).getNodeType() == Node.ELEMENT_NODE) {
Element el = (Element) nl.item(i);
if (el.getNodeName().contains("property")) {
names.add( el.getElementsByTagName("name").item(0).getTextContent());
//System.out.println(el.getElementsByTagName("name").item(0).getTextContent());
values.add( el.getElementsByTagName("value").item(0).getTextContent());
//System.out.println(el.getElementsByTagName("value").item(0).getTextContent());
}
}
}
}
这会将所有值添加到 ArrayList 中,然后您可以根据需要访问它们。或者你可以像我留下的评论一样打印它们。
关于java - 如何在 Java 中从 XML 中的名称-值对属性获取值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44637296/