java常用解析properties、xml文件方法

mail.properties文件如下:

mail_smtp_host=smtp.163.com
mail_smtp_auth=true

java解析properties代码如下:

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

public class MailConfig {
	public static String host;
	public static String auth;
	
	 static {
		Properties pro=new Properties();
		InputStream is=MailConfig.class.getClassLoader().getResourceAsStream("mail.properties");
		try {
			pro.load(is);
			is.close();
			System.out.println(pro.getProperty("mail_smtp_host"));
			System.out.println(pro.getProperty("mail_smtp_auth"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}		
	}
	public static void main(String []args){
		MailConfig mail=new MailConfig();
	}

}

mail.xml文件如下:

<?xml version="1.0" encoding="UTF-8"?>
<bookStore>
   <book id="1">
        <name>冰与火之歌</name>
        <author>乔治马丁</author>
        <year>2014</year>
        <price>89</price>
    </book>
    <book id="2">
        <name>安徒生童话</name>
        <year>2004</year>
        <price>77</price>
        <language>English</language>
    </book>    
</bookStore>

java解析xml文件代码:

import java.io.File;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class DOM4JTest {
    private static ArrayList<Object> bookList = new ArrayList<Object>();
    /**
     * @param args
     */
    public static void main(String[] args) {
        // 解析books.xml文件
        // 创建SAXReader的对象reader
        SAXReader reader = new SAXReader();
        try {
            // 通过reader对象的read方法加载books.xml文件,获取docuemnt对象。
            Document document = reader.read(new File("src/main/resources/book.xml"));
            // 通过document对象获取根节点bookstore
            Element bookStore = document.getRootElement();
            // 通过element对象的elementIterator方法获取迭代器
            Iterator it = bookStore.elementIterator();
            // 遍历迭代器，获取根节点中的信息（书籍）
            while (it.hasNext()) {
                System.out.println("=====开始遍历某一本书=====");
                Element book = (Element) it.next();
                // 获取book的属性名以及 属性值
                List<Attribute> bookAttrs = book.attributes();
                for (Attribute attr : bookAttrs) {
                    System.out.println("属性名：" + attr.getName() + "--属性值："
                            + attr.getValue());
                }
                Iterator itt = book.elementIterator();
                while (itt.hasNext()) {
                    Element bookChild = (Element) itt.next();
                    System.out.println("节点名：" + bookChild.getName() + "--节点值：" + bookChild.getStringValue());
                }
                System.out.println("=====结束遍历某一本书=====");
            }
        } catch (DocumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}