Java如何从XML文件加载属性？
使用该java.util.Properties.loadFromXML()方法可以轻松完成XML属性的读取。就像从包含键=值对的文件中读取属性一样，XML文件还将包含以以下XML格式包装的键和值。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>Application Configuration</comment>
<entry key="data.folder">D:\AppData</entry>
<entry key="jdbc.url">jdbc:mysql://localhost/mydb</entry>
</properties>package org.nhooo.example.util;
import java.io.FileInputStream;
import java.util.Properties;
public class LoadXmlProperties {
public static void main(String[] args) {
LoadXmlProperties lxp = new LoadXmlProperties();
try {
Properties properties = lxp.readProperties();
//显示所有属性信息
properties.list(System.out);
//读取data.folder和jdbc.url配置的值
String dataFolder = properties.getProperty("data.folder");
System.out.println("data.folder = " + dataFolder);
String jdbcUrl = properties.getProperty("jdbc.url");
System.out.println("jdbc.url = " + jdbcUrl);
} catch (Exception e) {
e.printStackTrace();
}
}
private Properties readProperties() throws Exception {
Properties properties = new Properties();
FileInputStream fis = new FileInputStream("configuration.xml");
properties.loadFromXML(fis);
return properties;
}
}上面的代码片段的结果：
-- listing properties -- data.folder=D:\AppData jdbc.url=jdbc:mysql://localhost/mydb data.folder = D:\AppData jdbc.url = jdbc:mysql://localhost/mydb