why error when run
error info:

16:46:52,093 ERROR [XMLHelper] Error parsing XML: XML InputStream(8) Attribute "
not-null" must be declared for element type "id".
16:46:52,093 INFO [STDOUT] org.hibernate.MappingException: Error reading resour
ce: com/hmit/hub/entity/hbm/Datalog.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:449)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.jav
a:1313)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.jav
a:1285)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1267)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1234)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1162)
at com.hmit.hub.entity.db.InitHibernate.init(InitHibernate.java:56)
at com.hmit.hub.entity.db.HibernateUtilPlus.getSystemSessionFactory(Hibe
rnateUtilPlus.java:129)
at com.hmit.hub.entity.db.HibernateUtilPlus.currentSession(HibernateUtil
Plus.java:46)
at org.jbpm.scheduler.impl.SchedulerThread.executesimple(SchedulerThread
.java:77)
at org.jbpm.scheduler.impl.SchedulerThread.run(SchedulerThread.java:45)
Caused by: org.hibernate.MappingException: invalid mapping
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:396
)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:446)
... 10 more
Caused by: org.xml.sax.SAXParseException: Attribute "not-null" must be declared
for element type "id".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Un
known Source)
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.addDTDDefaultAttrsAndValid
ate(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleStartElement(Unknown
Source)
this is my *.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.hmit.hub.entity.base.Datalog"
table="HUB_DATALOG">
<id name="logId" type="long" unsaved-value="null">
<column name="LOGID" not-null="true" />
<generator class="native">
</generator>
</id>
<property name="logLevel" column="LOGLEVEL" type="string"
not-null="false" />
</class>
</hibernate-mapping>

Your XML is not well formed

You define column as a new element and never close it. Try this instead

Ignore the comment about not closing column.

you're not showing the right parsed file.