我正在尝试使用 XStream 将一个小对象图输出到 JSON。仅输出,无需反序列化。
对象很简单:
@XStreamAlias("players")
public class Players {
@XStreamImplicit
private List<Player> players = new ArrayList<Player>();
public Players() {
for (int i = 0; i < 5; ++i) {
players.add(new Player("Player " + i));
}
}
}
@XStreamAlias("player")
public class Player {
private String name;
public Player(String name) {
this.name = name;
}
}
幸运的是,JSON 中省略了不必要的列表包装器元素:
{ players: { player: { name: "Player 4"}}}
但不幸的是,只打印了最后一个元素。
我正在使用 XStream 1.4.2,像这样初始化:
XStream xstream = new XStream(new JsonHierarchicalStreamDriver());
xstream.setMode(XStream.NO_REFERENCES);
xstream.aliasSystemAttribute(null, "class");
xstream.autodetectAnnotations(true);
String out = xstream.toXML(xstramAliasObject);
据我所知,设置类似于这个问题:XStream Alias of List root elements .
我的例子有什么问题?
提前致谢! 问候,迈克尔
最佳答案
我正在使用相同的库,但收到了完整的消息..
{"players": {
"player": {
"name": "Player 0"
},
"player": {
"name": "Player 1"
},
"player": {
"name": "Player 2"
},
"player": {
"name": "Player 3"
},
"player": {
"name": "Player 4"
}
}}
这是代码..
public static void main(String[] args) {
Players xstramAliasObject = new Players();
XStream xstream = new XStream(new JsonHierarchicalStreamDriver());
xstream.setMode(XStream.NO_REFERENCES);
xstream.aliasSystemAttribute(null, "class");
xstream.autodetectAnnotations(true);
System.out.println("--- "+xstream.toXML(xstramAliasObject));
}
关于java - XStream:使用 XStreamImplicit 省略集合,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11340131/