如何以编程方式从.properties文件中获取Struts2值？

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

public class ReadProperties {
    public static void main(String[] args) {
        Properties properties = new Properties();
        try {
            FileInputStream fileInputStream = new FileInputStream("your-file.properties");
            properties.load(fileInputStream);
            String struts2Value = properties.getProperty("struts2.key");
            System.out.println("Struts2值: " + struts2Value);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}