<dependency>
       <groupId>com.thoughtworks.xstream</groupId>
       <artifactId>xstream</artifactId>
       <version>1.4.7</version>
   </dependency>

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamAsAttribute;

@XStreamAlias("book")
public class Book {

// 别名注解，这个别名就是XML文档中的元素名，Java的属性名不一定要与别名一致
    @XStreamAlias("name")
    private String name;
    
    @XStreamAlias("author")
    private String author;
    
    // 属性注解，此price就是book的属性，在XML中显示为：<book price="108">
    @XStreamAsAttribute()
    @XStreamAlias("price")
    private String price;

省略get和set方法
}

import java.util.List;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;

@XStreamAlias("books")
public class Books {

// 隐式集合，加上这个注解可以去掉book集合最外面的<list></list>这样的标记
    @XStreamImplicit
    private List<Book> list;

省略get和set方法
}

import java.util.List;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class XStreamHandle {

private static final String xmlString = "<books><book price=\"108\"><name>Java编程思想</name><author>Bruce Eckel</author></book><book price=\"52\"><name>Effective Java</name><author>Joshua Bloch</author></book><book price=\"118\"><name>Java 7入门经典</name><author>Ivor Horton</author></book></books>";

public static String toXml(Object obj) {
        XStream xstream = new XStream(new DomDriver("utf8"));
        xstream.processAnnotations(obj.getClass()); // 识别obj类中的注解
        /*
         // 以压缩的方式输出XML
         StringWriter sw = new StringWriter();
         xstream.marshal(obj, new CompactWriter(sw));
         return sw.toString();
         */
        // 以格式化的方式输出XML
        return xstream.toXML(obj);
    }
    
    public static <T> T toBean(String xmlStr, Class<T> cls) {
        XStream xstream = new XStream(new DomDriver());
        xstream.processAnnotations(cls);
        @SuppressWarnings("unchecked")
        T t = (T) xstream.fromXML(xmlStr);
        return t;
    }
    
    public static void main(String[] args) {
        Books books = toBean(xmlString, Books.class);
        List<Book> list = books.getList();
        for(Book book : list) {
            System.out.println("name=" + book.getName() + "\tauthor=" + book.getAuthor()
                    + "\tprice=" + book.getPrice());
        }
        System.out.println(toXml(books));
    }
}