我正在尝试编写一个应用程序，以便它能够读取这种XML并基于该XML创建整个对象。
<actor id="id273211" PGFVersion="0.19" GSCVersion="0.10.4">
<attributes>
<text id="name">Actor 1b</text>
<point id="position">
<real id="x">0</real>
<real id="y">0</real>
</point>
</attributes>
</actor>
我的问题是我将Point类的成员别名为“ real”，并且给出了异常。
我现在所拥有的是；
@XStreamAlias("actor")
public class Actor {
@XStreamAsAttribute
String id = "",PGFVersion = "", GSCVersion = "";
Attributes attributes = new Attributes();
}
public class Attributes {
public Text text = new Text("name", "Actor 1");
public Point point = new Point();
}
@XStreamConverter(value=ToAttributedValueConverter.class, strings={"value"})
@XStreamAlias("text")
public class Text {
@XStreamAsAttribute
String id;
String value;
public Text(String text, String value) {
this.id = text;
this.value = value;
}
public class Point {
@XStreamAlias("real")
public Real x = new Real("x", "11");
@XStreamAlias("real")
public Real y = new Real("y", "21");
@XStreamAsAttribute
public String id = "position";
}
还有我的Test.java：
public static void main(String[] args) throws Exception {
XStream xstream = new XStream();
Actor actor2 = new Actor();
xstream.processAnnotations(Text.class);
xstream.processAnnotations(Real.class);
xstream.processAnnotations(Point.class);
xstream.processAnnotations(Actor.class);
String xml = xstream.toXML(actor2);
System.out.println(xml);
}
这样可以完美输出XML，如下所示：
<actor id="" PGFVersion="" GSCVersion="">
<attributes>
<text id="name">Actor 1</text>
<point id="position">
<real id="x">11</real>
<real id="y">21</real>
</point>
</attributes>
</actor>
但是当我尝试使用导入它时：
String xml = xstream.toXML(actor2);
Actor actorNew = (Actor)xstream.fromXML(xml);
System.out.println(xml);
它给出了一个例外：
线程“ main”中的异常com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter $ DuplicateFieldException：
重复栏位y
----调试信息----字段：y类：projectmerger1.Point必填类型：projectmerger1.Point
转换器类型：
com.thoughtworks.xstream.converters.reflection.ReflectionConverter
路径：/projectmerger1.Actor/attributes/point/real [2]
行号：6类[1]：
projectmerger1.Attributes类[2]：projectmerger1.Actor
版本：1.4.6
这是一个整体错误的设置，还是可以通过一些调整继续使用它？
最佳答案
我通过更改Point类来解决它；
public class Point {
/*
@XStreamAlias("real")
@XStreamAlias("real2")
public Real y = new Real("y", "21");
@XStreamAsAttribute
public String id = "position";
*/
@XStreamImplicit
public List xy = new ArrayList();
public void add(Real entry) {
xy.add(entry);
}
}
并将其添加到我的Test.java中：
actor2.attributes.point.add(new Real("x","0"));
actor2.attributes.point.add(new Real("y","0"));
我将继续尝试。感谢您的支持。