我正在尝试将 XML 转换为 Java 代码。该 XML 位于不同的文件中;它将单词与数字(概率分布)进行匹配,如下所示:
<?xml version="1.0" encoding="UTF-8" ?>
<root>
<Durapipe type="int">1</Durapipe>
<EXPLAIN type="int">2</EXPLAIN>
<woods type="int">2</woods>
<hanging type="int">3</hanging>
<hastily type="int">2</hastily>
<localized type="int">1</localized>
<Schuster type="int">5</Schuster>
<regularize type="int">1</regularize>
<LASR type="int">1</LASR>
<LAST type="int">22</LAST>
<Gelch type="int">2</Gelch>
<Gelco type="int">26</Gelco>
.......
</root>
我正在尝试将其转换为 Java map ,这是我为此使用的代码:
XStream xstream = new XStream();
@SuppressWarnings("unchecked")
Map<String, Integer> englishCorpusProbDist = (Map<String, Integer>)xstream.fromXML(new File("LocationOfFileOnMyComputer/frequencies.xml"));
目前,每当我尝试运行上述 Java 代码时,我的控制台都会出现以下异常:
Exception in thread "main" com.thoughtworks.xstream.mapper.CannotResolveClassException: root
at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:79)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:55)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:79)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:74)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.SecurityMapper.realClass(SecurityMapper.java:71)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:47)
at com.thoughtworks.xstream.core.util.HierarchicalStreams.readClassType(HierarchicalStreams.java:29)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:133)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1185)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1169)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1133)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1075)
at ProductAttributeExtractor.main(ProductAttributeExtractor.java:23)
这是一篇相关的文章,但我的问题是增加了一层复杂性,因为我的 XML 将字符串与整数相匹配,不幸的是 Java Map 不能使用整数,它必须使用整数(这非常令人沮丧):How to convert XML to java.util.Map and vice versa
如果您能提供任何帮助,我们将不胜感激。提前致谢!
最佳答案
您需要注册您的MapConverter,即实现Converter的类
xstream.registerConverter(new MapEntryConverter());
希望有帮助
关于java - 将 XML 转换为 Java Map<String, Integer>,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25085399/