XStream的使用（4）—— 注解方式

使用注解方式生成xml格式，而不是使用 xstream.toXML()方法。

1、在JavaBean上添加注解

在类上添加 @XStreamAlias("city")

在属性上添加@XStreamAsAttribute

@XStreamAlias("city")
public class City {
	@XStreamAsAttribute
	private String name;
	
	@XStreamAsAttribute
	private String description;
	//封装……
	
	public City() {
		
	}
	public City(String name, String description) {
		super();
		this.name = name;
		this.description = description;
	}
	@Override
	public String toString() {
		return "City [name=" + name + ", description=" + description + "]";
	}
}

2、在测试方法 test4() 上

	@Test  //引入注解
	public void test4() throws Exception{
		City city1_1 = new City("长沙","娱乐之都");
		City city1_2 = new City("韶山","伟人故居");

		City city2_1 = new City("石家庄","河北省会");
		City city2_2 = new City("承德","避暑山庄");

		List cities1 = new ArrayList();
		cities1.add(city1_1);
		cities1.add(city1_2);

		List cities2 = new ArrayList();
		cities2.add(city2_1);
		cities2.add(city2_2);
		
		
		XStream xstream = new XStream();
		//引入一行代码，进行注解的检测
		xstream.autodetectAnnotations(true);
		System.out.println(xstream.toXML(cities1));
		System.out.println(xstream.toXML(cities2));
		
	}
}

3、控制台显示

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如果再属性上添加 @XStreamOmitField 注解，则该属性将不会解析为 xml 中的属性，比如

	@XStreamAsAttribute
	@XStreamOmitField
	private String description;

结果为：