com.thoughtworks.xstream.converters.ConversionException

使用webService调用接口，返回的是xml格式，运用xstream解析的时候，出现了如下的错误：

 Exception in thread "Timer-1" com.thoughtworks.xstream.converters.ConversionException: For input string: "VS" : For input string: "VS"
 ---- Debugging information ----
 message             : For input string: "VS"
 cause-exception     : java.lang.NumberFormatException
 cause-message       : For input string: "VS"
 class               : java.lang.Integer
 required-type       : java.lang.Integer
 converter-type      : com.thoughtworks.xstream.converters.SingleValueConverterWrapper
 wrapped-converter   : com.thoughtworks.xstream.converters.basic.IntConverter
 path                : /interface/items/roomstate
 class[1]            : catic.hotel.server.webservice.Items
 converter-type[1]   : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
 class[2]            : catic.hotel.server.webservice.Interface
 version             : null
 -------------------------------
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79)
     at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
     at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355)
     at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306)
     at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
     at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
     at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:322)
     at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
     at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
     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:1058)
     at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042)
     at com.thoughtworks.xstream.XStream.fromXML(XStream.java:913)
     at com.thoughtworks.xstream.XStream.fromXML(XStream.java:904)
     at catic.library.util.XmlBeanConvertUtil.xml2Bean(XmlBeanConvertUtil.java:27)
     at catic.library.util.XMLUtil.roomStatusXmlToList2(XMLUtil.java:86)
     at catic.hotel.server.server.ReadDataByPMSOurDB$ReadPMSUptOurDB.run(ReadDataByPMSOurDB.java:104)
     at java.util.TimerThread.mainLoop(Unknown Source)
     at java.util.TimerThread.run(Unknown Source)
 Caused by: java.lang.NumberFormatException: For input string: "VS"
     at java.lang.NumberFormatException.forInputString(Unknown Source)
     at java.lang.Long.parseLong(Unknown Source)
     at java.lang.Long.valueOf(Unknown Source)
     at java.lang.Long.decode(Unknown Source)
     at com.thoughtworks.xstream.converters.basic.IntConverter.fromString(IntConverter.java:27)
     at com.thoughtworks.xstream.converters.SingleValueConverterWrapper.fromString(SingleValueConverterWrapper.java:41)
     at com.thoughtworks.xstream.converters.SingleValueConverterWrapper.unmarshal(SingleValueConverterWrapper.java:49)
     at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
     ... 26 more

由43行可以看出，是类型转换异常，因为返回的类型既有String，又有Integer，而我只用了Integer，忽略了String，所以报错。

刚开始还以为是使用xstream报的错，由于是第一次使用这个东东……不过，xstream这个东东真的很好用。