初次接触Hibernate，老是出现 Unable to read XML的异常

初次接触Hibernate，老是出现 Unable to read XML的错误
hibernate.cfg.xml如下：

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

	<session-factory>
		<property name="dialect">
			org.hibernate.dialect.MySQLDialect
		</property>
		<property name="connection.url">
			jdbc:mysql://localhost:3306/demo
		</property>
		<property name="connection.username">root</property>
		<property name="connection.password">123456</property>
		<property name="connection.driver_class">
			com.mysql.jdbc.Driver
		</property>
		<property name="myeclipse.connection.profile">
			testDriver
		</property>
		<mapping resource="model/Xsb.hbm.xml" />

	</session-factory>

</hibernate-configuration>

Xsb.hbm.xml文件如下：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd ">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="model.Xsb" table="XSB" >
        <id name="xh" type="java.lang.String">
            <column name="XH" length="10" />
            <generator class="assigned" />
        </id>
        <property name="xsm" type="java.lang.String">
            <column name="XSM" length="20" not-null="true" />
        </property>
    </class>
</hibernate-mapping>

这些配置文件了，POJO类了什么的都是MyEclipse 10.6自动生成的…………



错误如下：

2013-4-27 20:41:13 org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
2013-4-27 20:41:13 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.1.4.Final}
2013-4-27 20:41:13 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
2013-4-27 20:41:13 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
2013-4-27 20:41:13 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-4-27 20:41:13 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2013-4-27 20:41:13 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: model/Xsb.hbm.xml
%%%% Error Creating SessionFactory %%%%
org.hibernate.InvalidMappingException: Unable to read XML
	at org.hibernate.internal.util.xml.MappingReader.readMappingDocument(MappingReader.java:109)
	at org.hibernate.cfg.Configuration.add(Configuration.java:478)
	at org.hibernate.cfg.Configuration.add(Configuration.java:474)
	at org.hibernate.cfg.Configuration.add(Configuration.java:647)
	at org.hibernate.cfg.Configuration.addResource(Configuration.java:730)
	at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2109)
	at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2081)
	at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2061)
	at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2014)
	at org.hibernate.cfg.Configuration.configure(Configuration.java:1929)
	at session.HibernateSessionFactory.<clinit>(HibernateSessionFactory.java:31)
	at test.Tester.main(Tester.java:11)
Caused by: org.dom4j.DocumentException: http://www.jboss.org/dtd/hibernate/hibernate-mapping-3.0.dtd%20 Nested exception: http://www.jboss.org/dtd/hibernate/hibernate-mapping-3.0.dtd%20
	at org.dom4j.io.SAXReader.read(SAXReader.java:484)
	at org.hibernate.internal.util.xml.MappingReader.readMappingDocument(MappingReader.java:78)
	... 11 more
2013-4-27 20:41:14 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-4-27 20:41:14 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml