hi, i'm trying to do something with hibernate using Netbeans...
i did the file hibernate.cfg.xml like this:
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
Code:
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/hibernatetutorial</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.pool_size">10</property>
<property name="show_sql">true</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<!-- Mapping files -->
<mapping resource="contact.hbm.xml"/>
</session-factory>
</hibernate-configuration>
and another file contact.hbm.xml like this:
Code:
<?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="tutorial.hibernate.Contact" table="CONTACT">
<id name="id" type="long" column="ID" >
<generator class="increment"/>
</id>
<property name="firstName">
<column name="FIRSTNAME" />
</property>
<property name="lastName">
<column name="LASTNAME"/>
</property>
<property name="email">
<column name="EMAIL"/>
</property>
</class>
<class name="tutorial.hibernate.Book" table="BOOK">
<composite-id>
<key-property name="lngBookId" column="id" type="long">
<column not-null="true" name="id"/>
<type name="long"/>
</key-property>
</composite-id>
<property name="strBookAuthor" >
<column name="bookauthor" not-null="true"/>
<type name="string"/>
</property>
<property name="strBookName">
<column name="bookname" />
<type name="string"/>
</property>
</class>
<class name="tutorial.hibernate.Insurance" table="insurance">
<id name="lngInsuranceId" type="long" column="ID" >
<generator class="increment"/>
</id>
<property name="insuranceName">
<column name="insurance_name" />
</property>
<property name="investementAmount">
<column name="invested_amount" />
</property>
<property name="investementDate">
<column name="investement_date" />
</property>
</class>
</hibernate-mapping>
now the problem is that when i run the project i have this error on the console :
Code:
18:44:19,140 INFO [TomcatDeployer] undeploy, ctxPath=/provahib, warUrl=.../tmp/deploy/tmp49637provahib-exp.war/
18:44:19,312 INFO [TomcatDeployer] deploy, ctxPath=/provahib, warUrl=.../tmp/deploy/tmp49638provahib-exp.war/
18:44:22,906 INFO [Configuration] configuring from resource: /hibernate.cfg.xml
18:44:22,906 INFO [Configuration] Configuration resource: /hibernate.cfg.xml
18:44:22,921 INFO [Configuration] Reading mappings from resource : contact.hbm.xml
18:44:22,953 INFO [HbmBinder] Mapping class: tutorial.hibernate.Contact -> CONTACT
18:44:22,953 INFO [HbmBinder] Mapping class: tutorial.hibernate.Book -> BOOK
18:44:22,953 INFO [STDOUT] Could not parse mapping document from resource contact.hbm.xml
18:44:23,375 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.index_jsp._jspService(index_jsp.java:126)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:619)
can someone help me??
when i use normal id and not composite-id it is ok
Code:
...<class name="tutorial.hibernate.Book" table="book">
<id name="lngBookId" type="long" column="id" >
<generator class="increment"/>
</id>
<property name="strBookAuthor">
<column name="bookauthor" />
</property>
<property name="strBookName">
<column name="bookname" />
</property>
</class>...
i can't understand where is the mistake... thanks in advance and sorry for my poor english .
Apollo982
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