XStream 遇到的问题

　　1.xstream xml转bean对象，双划线问题

　　　解决：主要是用到了new XmlFriendlyNameCoder("_-", "_")，在创建XStream对象时可XStream xStream = new XStream(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));

　　2.获取节点的属性值以及自身值

　　　　方法1：@XStreamConverter(value=ToAttributedValueConverter.class, strings={"value"})

　　　　　　     对应的value是bean对象的属性名，具体示例：

@XStreamAlias("RETURNCODE")
@XStreamConverter(value=ToAttributedValueConverter.class, strings={"value"})
public class ReturnCodeVO {

    @XStreamAsAttribute
    @XStreamAlias("CODE")
    private String code;

    @XStreamAsAttribute
    @XStreamAlias("MSG")
    private String msg;

    @XStreamAsAttribute
    @XStreamAlias("CMSG")
    private String cmsg;

    private String value;

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public String getCmsg() {
        return cmsg;
    }

    public void setCmsg(String cmsg) {
        this.cmsg = cmsg;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

　　　　方法2：使用转换器Converter，具体示例如下：

　　

public class CityConverter implements Converter {

    public void marshal(Object value, HierarchicalStreamWriter writer, 
                                                               MarshallingContext context) {
        City city = (City) value;
        writer.addAttribute("id", city.getId());
        writer.addAttribute("type", city.getType().toString());
        writer.setValue(city.getName());
    }

    public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
        City city = new City();
        city.setName(reader.getValue());
        city.setId(reader.getAttribute("id"));
        city.setType(reader.getAttribute("type"));
        return city;
    }

    public boolean canConvert(Class clazz) {
        return clazz.equals(City.class);
    }

}

　　调用XStream时进行设置：

　　XStream xStream = new XStream();

　　xStream.registerConverter(new CityConverter());

　　 xStream.alias("loc", City.class);