Java 休眠 4. 无效的映射异常。无法读取 XML。必须声明元素类型 hibernate-mapping
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时间：2020-08-12 15:11:28 来源:igfitidea点击:
Hibernate 4. Invalid Mapping Exception. Unable to read XML. Element type hibernate-mapping must be declared
提问by Petr Shypila
I have InvalidMappingExceptionon org.hibernate.cfg.Configuration.configure()method call.
我InvalidMappingException对org.hibernate.cfg.Configuration.configure()方法调用。
Stack trace:
堆栈跟踪：
javax.servlet.ServletException: org.hibernate.InvalidMappingException: Unable to read XML
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause
org.hibernate.InvalidMappingException: Unable to read XML
org.hibernate.internal.util.xml.MappingReader.readMappingDocument(MappingReader.java:109)
org.hibernate.cfg.Configuration.add(Configuration.java:488)
org.hibernate.cfg.Configuration.add(Configuration.java:484)
org.hibernate.cfg.Configuration.add(Configuration.java:657)
org.hibernate.cfg.Configuration.addResource(Configuration.java:740)
org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2188)
org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2160)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2140)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2093)
org.hibernate.cfg.Configuration.configure(Configuration.java:2008)
org.hibernate.cfg.Configuration.configure(Configuration.java:1987)
com.petrez.util.HibernateUtil.getSessionFactory(HibernateUtil.java:12)
com.action.UserAction.setUser(UserAction.java:29)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause
org.xml.sax.SAXParseException; systemId: ; lineNumber: 5; columnNumber: 47; Element type "hibernate-mapping" must be declared.
org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1213)
org.apache.xerces.validators.common.XMLValidator.reportRecoverableXMLError(XMLValidator.java:1807)
org.apache.xerces.validators.common.XMLValidator.validateElementAndAttributes(XMLValidator.java:3633)
org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1229)
org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanner.java:1806)
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:949)
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1098)
org.dom4j.io.SAXReader.read(SAXReader.java:465)
org.hibernate.internal.util.xml.MappingReader.readMappingDocument(MappingReader.java:78)
org.hibernate.cfg.Configuration.add(Configuration.java:488)
org.hibernate.cfg.Configuration.add(Configuration.java:484)
org.hibernate.cfg.Configuration.add(Configuration.java:657)
org.hibernate.cfg.Configuration.addResource(Configuration.java:740)
org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2188)
org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2160)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2140)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2093)
org.hibernate.cfg.Configuration.configure(Configuration.java:2008)
org.hibernate.cfg.Configuration.configure(Configuration.java:1987)
com.petrez.util.HibernateUtil.getSessionFactory(HibernateUtil.java:12)
com.action.UserAction.setUser(UserAction.java:29)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
Config file: hibernate.cfg.xml
配置文件： hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/LIBRARY</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">G190419g</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.show_sql">false</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.cglib.use_reflection_optimizer">false</property>
<property name="hibernate.c3p0.acquire_increment">1</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.c3p0.max_size">100</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.min_size">10</property>
<property name="hibernate.c3p0.timeout">100</property>
<property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
<mapping resource="com/petrez/model/Users.hbm.xml" />
</session-factory>
</hibernate-configuration>
Mapping file: Users.hbm.xml
映射文件： Users.hbm.xml
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.petrez.model">
<class name="Users" table="Users" >
<id name="id" column="Id" type="java.lang.Integer" >
<generator class="increment"/>
</id>
<property name="firstName" type="java.lang.String">
<column name="FirstName" length="45" />
</property>
<property name="lastName" type="java.lang.String">
<column name="LastName" length="45" />
</property>
<property name="eMail" type="java.lang.String">
<column name="Email" length="45" />
</property>
</class>
</hibernate-mapping>
So anybody can say me where is here a mistake? Thanks.
所以任何人都可以说我这里有什么错误？谢谢。
UPD:Project Structure.
UPD：项目结构。
Well. I didn't find a solution, but annotations helped me.
好。我没有找到解决方案，但注释帮助了我。
回答by CHowdappaM
Change your type of mappings from Java types to Hibernate types: For String i am giving as example:
将您的映射类型从 Java 类型更改为 Hibernate 类型：对于字符串，我举了一个例子：
<property name="logMsg" type="string">
<column name="LOG_MSG" length="35" />
</property>
