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    copied!<p>I have created basic hibernate application. It throw error message.</p> <p><strong>Error is:</strong></p> <pre><code> Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Environment &lt;clinit&gt; INFO: Hibernate 3.2.5 Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Environment &lt;clinit&gt; INFO: hibernate.properties not found Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Environment buildBytecodeProvider INFO: Bytecode provider name : cglib Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Environment &lt;clinit&gt; INFO: using JDK 1.4 java.sql.Timestamp handling Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Configuration configure INFO: configuring from resource: /hibernate.cfg.xml Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Configuration getConfigurationInputStream INFO: Configuration resource: /hibernate.cfg.xml Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Configuration addResource INFO: Reading mappings from resource : com/crmcall/entity/CallUsers.hbm.xml Oct 18, 2012 3:36:13 PM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues INFO: Mapping class: com.crmcall.entity.CallUsers -&gt; crmcallusers Oct 18, 2012 3:36:13 PM org.hibernate.cfg.Configuration addResource INFO: Reading mappings from resource : com/crmcall/entity/Customers.hbm.xml Oct 18, 2012 3:36:14 PM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues INFO: Mapping class: com.crmcall.entity.Customers -&gt; crmcustomermaster Oct 18, 2012 3:36:14 PM org.hibernate.cfg.Configuration addResource INFO: Reading mappings from resource : com/crmcall/entity/User.hbm.xml Oct 18, 2012 3:36:14 PM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues INFO: Mapping class: com.crmcall.entity.User -&gt; crmusers Oct 18, 2012 3:36:14 PM org.hibernate.cfg.Configuration doConfigure INFO: Configured SessionFactory: null Initial SessionFactory creation failed.org.hibernate.MappingException: component class not found: string Exception in thread "main" java.lang.ExceptionInInitializerError at com.crmcall.util.HibernateUtil.&lt;clinit&gt;(HibernateUtil.java:27) at com.crmcall.dao.UserDAO.&lt;init&gt;(UserDAO.java:23) at com.crmcall.dao.UserDAO.main(UserDAO.java:36) Caused by: org.hibernate.MappingException: component class not found: string at org.hibernate.mapping.Component.getComponentClass(Component.java:104) at org.hibernate.tuple.component.PojoComponentTuplizer.buildGetter(PojoComponentTuplizer.java:133) at org.hibernate.tuple.component.AbstractComponentTuplizer.&lt;init&gt;(AbstractComponentTuplizer.java:43) at org.hibernate.tuple.component.PojoComponentTuplizer.&lt;init&gt;(PojoComponentTuplizer.java:38) at org.hibernate.tuple.component.ComponentEntityModeToTuplizerMapping.&lt;init&gt;(ComponentEntityModeToTuplizerMapping.java:52) at org.hibernate.tuple.component.ComponentMetamodel.&lt;init&gt;(ComponentMetamodel.java:50) at org.hibernate.mapping.Component.buildType(Component.java:152) at org.hibernate.mapping.Component.getType(Component.java:145) at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:253) at org.hibernate.mapping.RootClass.validate(RootClass.java:193) at org.hibernate.cfg.Configuration.validate(Configuration.java:1102) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1287) at com.crmcall.util.HibernateUtil.&lt;clinit&gt;(HibernateUtil.java:24) ... 2 more Caused by: java.lang.ClassNotFoundException: string at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:100) at org.hibernate.mapping.Component.getComponentClass(Component.java:101) </code></pre> <p>This is my Hibernate.cfg.xml file:</p> <pre><code> &lt;hibernate-configuration&gt; &lt;session-factory&gt; &lt;property name="hibernate.dialect"&gt;org.hibernate.dialect.MySQLDialect&lt;/property&gt; &lt;property name="hibernate.connection.driver_class"&gt;com.mysql.jdbc.Driver&lt;/property&gt; &lt;property name="hibernate.connection.url"&gt;jdbc:mysql://192.168.1.5:3306/crmtest&lt;/property&gt; &lt;property name="hibernate.connection.username"&gt;root&lt;/property&gt; &lt;property name="hibernate.connection.password"&gt;root&lt;/property&gt; &lt;property name="hibernate.hbm2ddl.auto"&gt;create-drop&lt;/property&gt; &lt;property name="show_sql"&gt;true&lt;/property&gt; &lt;property name="format_sql"&gt;true&lt;/property&gt; &lt;!-- Enable Hibernate automatic session context management --&gt; &lt;property name="current_session_context_class"&gt;thread&lt;/property&gt; &lt;!-- Disable the second-level cache --&gt; &lt;property name="cache.provider_class"&gt;org.hibernate.cache.NoCacheProvider&lt;/property&gt; &lt;mapping resource="com/crmcall/entity/CallUsers.hbm.xml"/&gt; &lt;mapping resource="com/crmcall/entity/Customers.hbm.xml"/&gt; &lt;mapping resource="com/crmcall/entity/User.hbm.xml"/&gt; &lt;/session-factory&gt; &lt;/hibernate-configuration&gt; </code></pre> <p>This is my User.hbm.xml</p> <pre><code> &lt;hibernate-mapping&gt; &lt;class name="com.crmcall.entity.User" table="crmusers"&gt; &lt;composite-id name="userPK" &gt; &lt;key-property name="businessUnit" column="BusinessUnit" type="string"/&gt; &lt;key-property name="userID" column="UserID" type="string"/&gt; &lt;/composite-id&gt; &lt;property name="recID" &gt; &lt;column name="RecID"/&gt; &lt;/property&gt; &lt;property name="password"&gt; &lt;column name="Password"/&gt; &lt;/property&gt; &lt;property name="userName"&gt; &lt;column name="UserName"/&gt; &lt;/property&gt; &lt;property name="userType"&gt; &lt;column name="UserType"/&gt; &lt;/property&gt; &lt;property name="userLevel"&gt; &lt;column name="UserLevel"/&gt; &lt;/property&gt; &lt;property name="customerCode"&gt; &lt;column name="CustomerCode"/&gt; &lt;/property&gt; &lt;property name="customerCodeson"&gt; &lt;column name="CustomerCodeson"/&gt; &lt;/property&gt; &lt;property name="locationCode"&gt; &lt;column name="LocationCode"/&gt; &lt;/property&gt; &lt;property name="lastUpdatedBy"&gt; &lt;column name="LastUpdatedBy"/&gt; &lt;/property&gt; &lt;property name="lastUpdatedOn" type="timestamp"&gt; &lt;column name="LastUpdatedOn"/&gt; &lt;/property&gt; &lt;property name="email" type="string"&gt; &lt;column name="Email"/&gt; &lt;/property&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>This is my calling place :</p> <pre><code> public class UserDAO { private Session session = null; public UserDAO() { session = HibernateUtil.currentSession(); } public List&lt;User&gt; getAllUsers() { Transaction tn = session.beginTransaction(); List&lt;User&gt; users = session.createQuery("from crmusers cu order by cu.UserID").list(); System.out.println("==" + users.size()); tn.commit(); return users; } public static void main(String[] args){ UserDAO userDAO = new UserDAO(); userDAO.getAllUsers(); } } </code></pre> <p>This is my project folder structre: <img src="https://i.stack.imgur.com/ozoOc.png" alt="enter image description here"></p> <p>Please tell me what is an issue in my code?</p> <p>Thanks in advance..</p>
 

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