使用xstream错误的XML文件到ArrayList java

Question

我想使用xstream将xml文件转换为Arraylist。当我做的时候，我有如下错误：

com.thoughtworks.xstream.converters.ConversionException: pattern : pattern
---- Debugging information ----
message             : pattern
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : pattern
class               : java.util.ArrayList
required-type       : java.util.ArrayList
converter-type      : com.thoughtworks.xstream.converters.collections.CollectionConverter
path                : /datas/data/pattern
line number         : 5
class[1]            : com.socket.server.ServerData$Datas
converter-type[1]   : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
version             : 1.4.7
-------------------------------

这是我的代码

try{

        XStream xstream = new XStream(new StaxDriver());
        Datas datas = new Datas();
        File xmlx = new File("E:\\FileConfig.xml");

        xstream.alias("datas", Datas.class);
        xstream.alias("data", DataRegex.class);
        xstream.aliasField("pattern", DataRegex.class, "pattern");
        xstream.aliasField("destination", DataRegex.class, "destination");
        // xstream.addImplicitCollection(DataRegex.class, "data",Data.class);
        @SuppressWarnings("unchecked")
         List<DataRegex> dataz = (List<DataRegex>) xstream.fromXML(xmlx);
            System.out.println(dataz);

    }catch(Exception e){
        e.printStackTrace();
    }       

检查List<DataRegex> dataz = (List<DataRegex>) xstream.fromXML(xmlx);时的错误，任何人都可以帮忙。我做的事？这是我的xml文件

<?xml version="1.0" encoding="UTF-8"?>

<data>
    <patter>^[sS].*</pattern>
    <destination>C:\\Server\\s\\</destination>
</data>

<data>
    <pattern>^[dD].*</pattern>
    <destination>C:\\Server\\d\\</destination>
</data>

Answer 1

任何有效XML的根元素都必须是单个元素，并且不能是列表。根据您的评论，Datas是根元素：

Datas dataz = (Datas) xstream.fromXML(xmlx);