“org.xml.sax.SAXParseException：不支持编码”GBK“。”

Question

Document dws;
    try {
        dws = XmlFactory.getResource("/com/newzhongway/service/test.xml");
        ExtDocument ext= new ExtDocument(dws);
        String rexml = XmlFactory.getXmlStr(dws);
        String jsonStr = Xml2JsonUtil.xml2JSON(rexml);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

myclipse在控制台

中出错

org.jdom.input.JDOMParseException: Error on line 0: The encoding "GBK" is not supported.
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:533)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:865)
at com.zhongway.pub.handler.Xml2JsonUtil.xml2JSON(Xml2JsonUtil.java:30)
at com.zhongway.pub.handler.Xml2JsonUtil.main(Xml2JsonUtil.java:214)
Caused by: org.xml.sax.SAXParseException: The encoding "GBK" is not supported.
at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1196)
at org.apache.xerces.readers.DefaultEntityHandler.startReadingFromDocument(DefaultEntityHandler.java:541)
at org.apache.xerces.framework.XMLParser.parseSomeSetup(XMLParser.java:312)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1080)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:518)
... 3 more

我的xml文件是

<?xml version='1.0'  encoding='gb2312'?>
         <interfacemsg>
           <query>
             <sheetNo>2015080700001</sheetNo>
             <DEALER>KEDA</DEALER>
             <PROV>sn_eoms</PROV>
           </query>
           <result>
             <sheetDetailInfo>
               <BasicInfo>
                 <WSID>2015080700001</WSID>
                 <WSTYPECODE>移动专业故障</WSTYPECODE>
                 <WSINFOHINT>移动网:CDMA网；故障对象:测试</WSINFOHINT>
                 <BEGINTIME>2015-08-07 08:45:01</BEGINTIME>
                 <ENDTIME></ENDTIME>
                 <STATUS>受理派单</STATUS>
                 <URGEDEGREE>一般</URGEDEGREE>
                 <PASTTIME>4734</PASTTIME>
               </BasicInfo>
               <handleInfoList>
                 <handleInfo>
                   <TASKNAME>申告工单</TASKNAME>
                   <TASKCREATETIME>2015-08-07 08:45:01</TASKCREATETIME>
                   <HANDLEPERSON>KEDA</HANDLEPERSON>
                   <TASKRECEIVETIME></TASKRECEIVETIME>
                   <HANDLETIME>2015-08-07 08:45:02</HANDLETIME>
                   <HANDLEDETAIL></HANDLEDETAIL>
                 </handleInfo>
                 <handleInfo>
                   <TASKNAME>受理派单</TASKNAME>
                   <TASKCREATETIME>2015-08-07 08:45:01</TASKCREATETIME>
                   <HANDLEPERSON></HANDLEPERSON>
                   <TASKRECEIVETIME></TASKRECEIVETIME>
                   <HANDLETIME></HANDLETIME>
                   <HANDLEDETAIL></HANDLEDETAIL>
                 </handleInfo>
               </handleInfoList>
               <applyInfo>
                 <CUSTTYPE></CUSTTYPE>
                 <APPLYER>KEDA</APPLYER>
                 <APPLYTIME>2015-08-07 08:45:00</APPLYTIME>
                 <APPLYUNIT>科大恒星</APPLYUNIT>
                 <TROUBLEOBJ>测试</TROUBLEOBJ>
                 <NETWORK>CDMA网</NETWORK>
                 <APPLYCLASS>国内漫游</APPLYCLASS>
                 <APPLYCLASSSMALL>语音业务</APPLYCLASSSMALL>
                 <TROUBLEDESCR>测试</TROUBLEDESCR>
                 <CCFXHJDCL>初步分析处理</CCFXHJDCL>
                 <IFINFLBUSI>否</IFINFLBUSI>
                 <HAPPENTIME>2015-08-07 03:00:00</HAPPENTIME>
                 <IFFIRSTFOUND>是</IFFIRSTFOUND>
                 <TROUBLESOURCE>其他</TROUBLESOURCE>
                 <TIMELIMIT></TIMELIMIT>
                 <CUSTLEVEL></CUSTLEVEL>
                 <GECUSTCLASS></GECUSTCLASS>
                 <CUSTINDUS></CUSTINDUS>
                 <CUSTSL></CUSTSL>
                 <CUSTLOCAL></CUSTLOCAL>
                 <OTHERCUSTINFO></OTHERCUSTINFO>
                 <ADDITIONALREMARK></ADDITIONALREMARK>
                 <ROAMINGTYPE></ROAMINGTYPE>
                 <ROAMINGCOUNTRY></ROAMINGCOUNTRY>
                 <IMSI></IMSI>
                 <CUSTNAME></CUSTNAME>
               </applyInfo>
               <dispatchInfoList/>
               <dealInfoList/>
               <hangupInfoList/>
               <callCenterInfoList/>
               <attachInfoList/>
               <OPList/>
             </sheetDetailInfo>
             <returnVal>
               <RETURN_CODE>0</RETURN_CODE>
               <RETURN_DESC>完成</RETURN_DESC>
             </returnVal>
           </result>
         </interfacemsg>

但为什么我有这个错误？ 有人可以帮我解决这段代码的错误。 我在网上搜索了很长时间。但没用。请帮助或尝试提供一些如何实现此目的的想法