xml 绑定，泛型和反射一例

最近这个项目有很多xml和java class转换的内容。利用XStream，Java的泛型和反射特性做了一个工具类。

方案1.

package webService;

import java.lang.reflect.TypeVariable;
import com.thoughtworks.xstream.XStream;

public class Transformer2<E> {

	Class<E> e;

	public static void main(String[] args) {
		
		Transformer2<RetailPriceRequest> t = new Transformer2<RetailPriceRequest>();

		RetailPriceRequest o = new RetailPriceRequest();
		o.setCompany("James dealer");
		o.setSku("203948");
		o.setQuantity(10);

		String xml = t.getAsString(o);
		System.out.println(xml);
		System.out.println(t.getAsObject(xml).toString());
		
	}

	@SuppressWarnings("unchecked")
	public Transformer2() {
	       TypeVariable<?> type = getClass().getTypeParameters()[0];      
	         e= (Class<E>) type.getClass();
	}
	
	@SuppressWarnings("unchecked")
	public E getAsObject(String xml) {
		XStream xstream = new XStream();
		xstream.alias(e.getSimpleName(),e);
		return (E) xstream.fromXML(xml);	
	}
	
	public String getAsString(Object o) {
		XStream xstream = new XStream();
		xstream.alias(e.getSimpleName(), e);
		return xstream.toXML(o);
	}

}

方案2.

package webService;

import com.thoughtworks.xstream.XStream;

public class Transformer {

	// public E e;

	Class cls;

	public static void main(String[] args) {

		Class cls = RetailPriceRequest.class;
		Transformer t = new Transformer(cls);

		RetailPriceRequest o = new RetailPriceRequest();
		o.setCompany("James dealer");
		o.setSku("203948");
		o.setQuantity(10);

		String xml = t.getAsString(o);
		System.out.println(xml);
		System.out.println(t.getAsObject(xml).toString());


	}

	public Transformer(Class cls) {
		this.cls = cls;
	}

	public Transformer() {
	}

	public Object getAsObject(String xml) {
		return getAsObject(xml, cls);
	}

	public String getAsString(Object o) {
		return getAsString(o, cls);
	}

	public Object getAsObject(String xml, Class cls) {
		XStream xstream = new XStream();
		xstream.alias(cls.getSimpleName(), cls);
		return xstream.fromXML(xml);
	}

	public String getAsString(Object o, Class cls) {
		XStream xstream = new XStream();
		xstream.alias(cls.getSimpleName(), cls);
		return xstream.toXML(o);
	}

}