Question

我正在使用XStream将XML字符串转换为Java Object。

我有大量数据，但我发布了以下最小代码：

XStream xstream = new XStream(new StaxDriver());
xstream.alias("data", DetList.class);
xstream.alias("i", Details.class);
String s = new String("<data>\n"
           +"\t<i Name='asia' type='continent' id='11'></i>\n"
           +"\t<i Name='africa' type='continent' id='12'></i>\n"
           +"\t<i Name='japan' type='country' id='13'></i>\n"
           +"</data>");
System.out.println(s);
DetList data = (DetList) xstream.fromXML(s);

调试时，数据始终为 null 。

这是我的DetList类：

public class DetList {
    private List<Details> detlist;

    public List<Details> getDetlist() {
        return detlist;
    }

    public void setDetlist(List<Details> detlist) {
        this.detlist = detlist;
    }
}

我的详细信息课程：

public class Details {

    private String Name;
    private String type;
    private String id;

    //Getters and Setters are here.
}

数据为空，应该包含 i 列表。

我怎样才能让它发挥作用？

Answer 1

如果您有兴趣，这是您的错误。我会在找到答案后立即更换它：

Exception in thread "main" com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field application.DetList.i
---- Debugging information ----
message             : No such field application.DetList.i
field               : i
class               : application.DetList
required-type       : application.DetList
converter-type      : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path                : /data/i
line number         : 2
version             : 1.4.9
-------------------------------
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.handleUnknownField(AbstractReflectionConverter.java:524)
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:375)
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:281)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
    at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:70)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
    at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1230)
    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1214)
    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1085)
    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1076)
    at application.Tester.main(Tester.java:15)

Java XStream将XML转换为Object

1 个答案: