关于ibatis的问题

sqlMapConfig.xml文件:
<?xml version="1.0" encoding="UTF-8" ?>
<sqlMapConfig>
  <transactionManager type="JDBC" commitRequired="false">
    <dataSource type="SIMPLE">
      <property name="JDBC.Driver" value="oracle.jdbc.OracleDriver"/>
      <property name="JDBC.ConnectionURL" value="jdbc:oracle:thin:@192.168.1.100:1521:orcl"/>
      <property name="JDBC.Username" value="zhangshengzhe"/>
      <property name="JDBC.Password" value="zhangshengzhe"/>
    </dataSource>
  </transactionManager>
   <sqlMap resource="IbatisDem/Employee.xml"/></sqlMapConfig>
Employee文件：
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE sqlMap      
    PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"      
    "http://ibatis.apache.org/dtd/sql-map-2.dtd"><sqlMap namespace="Employee">
  <typeAlias alias="Emp" type="IbatisDem.Employee"/>
 
  <delete id="deleteEmp" parameterClass="int">
   delete from employee where dept_id=#value#
  </delete>
  
 </sqlMap>
错误信息：
Exception in thread "main" java.lang.RuntimeException: Error occurred.  Cause: com.ibatis.common.xml.NodeletException: Error parsing XML.  Cause: org.xml.sax.SAXParseException: Document root element "sqlMapConfig", must match DOCTYPE root "null".
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:89)
at com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(SqlMapClientBuilder.java:63)
at IbatisDem.IbatisDemo.getIbatisTest(IbatisDemo.java:16)
at IbatisDem.DeleteEmp.main(DeleteEmp.java:14)
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML.  Cause: org.xml.sax.SAXParseException: Document root element "sqlMapConfig", must match DOCTYPE root "null".
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:53)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:86)
... 3 more
Caused by: org.xml.sax.SAXParseException: Document root element "sqlMapConfig", must match DOCTYPE root "null".
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.rootElementSpecified(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDispatcher.scanRootElementHook(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at com.ibatis.common.xml.NodeletParser.createDocument(NodeletParser.java:157)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:50)
... 4 more
不知道如何解决？