xstream也是一个比较好用的java对象转xml的工具，之前由于长期使用dom4j的缘故，都没研究过这玩意儿，最近由于搞微信开发的缘故要生成xml，但是又觉得dom4j有点繁琐，之后就找到了xstream的资料，顺便学了下觉得还是挺好用，因此推荐给大家。

1 jar包的下载地址

http://xstream.codehaus.org/download.html

这里推荐使用1.3.1这个版本，貌似大部分人都用的这个

2 xstream的基本使用

（1） xstream的初始化

（2）设置别名

（3）转换

// XStream初始化
XStream xstream = new XStream();
XStream xstream = new XStream(new DomDriver());

// 设置别名（可选）
xstream.alias("person",Person.class);

// 将Java对象转换为XML
xstream.toXML(person);

// 将XML转换为Java对象
Person person = xstream.fromXML(xml);

//xstream扩展
private static XStream xstream = new XStream(new XppDriver() {
		public HierarchicalStreamWriter createWriter(Writer out) {
			return new PrettyPrintWriter(out) {
				// 对所有xml节点都增加CDATA标记
				boolean cdata = true;

				public void startNode(String name,Class clazz) {
					super.startNode(name,clazz);
				}

				protected void writeText(QuickWriter writer,String text) {
					if (cdata) {
						writer.write("<![CDATA[");
						writer.write(text);
						writer.write("]]>");
					} else {
						writer.write(text);
					}
				}
			};
		}
});

3 赖看下我写的一个工具类

package org.lxh;

import java.io.Writer;
import java.util.List;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.XppDriver;

public class XstreamUtil {
	
	//xstream扩展
	private static XStream xstream = new XStream(new XppDriver() {
		public HierarchicalStreamWriter createWriter(Writer out) {
			return new PrettyPrintWriter(out) {
				// 对所有xml节点都增加CDATA标记
				boolean cdata = true;

				public void startNode(String name,String text) {
					if (cdata) {
						writer.write("<![CDATA[");
						writer.write(text);
						writer.write("]]>");
					} else {
						writer.write(text);
					}
				}
			};
		}
	});
	
	
	
  public String object2Xml(Object obj,Object child,String alias,String aliasForChild){
	  xstream.alias(alias,obj.getClass());
	  xstream.alias(aliasForChild,child.getClass());
	  String xml=xstream.toXML(obj);
	  return xml;
  }
  
  public String object2Xml(Object obj,String alias){
	  xstream.alias(alias,obj.getClass());
	 
	  String xml=xstream.toXML(obj);
	  return xml;
  }
}