Hibernate level Two cache configuration

Entity class

1  packagecn.happy.entity;2 3  public classEMP {4     PrivateInteger empNo; 5     PrivateString empname;6      publicInteger getempno () {7         returnempNo;8     }9      public voidsetempno (Integer EmpNo) {Ten          this. EmpNo =empNo; one     } a      publicString getempname () { -         returnempname; -     } the      public voidsetempname (String Empname) { -          this. EmpName =empname; -     } -      +      -  +}

Tool class

1  packagecn.happy.util;2 3 Importorg.hibernate.Session;4 Importorg.hibernate.SessionFactory;5 Importorg.hibernate.cfg.Configuration;6 7  public classHibernateutil {8     Private Static FinalThreadLocal sessiontl=NewThreadLocal ();9     Private StaticConfiguration cf;Ten     Private Static Finalsessionfactory factory; one     Static{ a         Try { -cf=NewConfiguration (). Configure (); -factory=cf.buildsessionfactory (); the}Catch(Exception E) { -             Throw NewExceptionininitializererror (e); -         } -     } +      public StaticSession getsession () -     {     +         //the get () method of the Sessiontl returns its corresponding thread internal variable according to the current thread . a                 //that is the session we need, the shared database connection is not secure in multi-threaded situations.  at                 //threadlocal ensures that each thread has its own session.  -Session session =(Session) sessiontl.get (); -         //if session is null, a new session is opened -         if(session==NULL) { -             //Create a database connection object session -session=factory.opensession (); in             //Save the database connection session to Threadlocal.  - Sessiontl.set (session); to              +         } -         //if the current thread has accessed the database, the                 //a get () from Sessiontl can get the database connection object that the thread last Fetched.  *                 returnsession; $     }Panax Notoginseng     /** - * Close Session the      */ +      public Static voidclosesession () a     { theSession session =(Session) sessiontl.get (); +Sessiontl.set (NULL); - session.close (); $     } $  -}

Test class

 packagecn.happy.test;Importorg.hibernate.Session;Importorg.hibernate.Transaction;Importorg.junit.Test;Importcn.happy.entity.Emp;Importcn.happy.util.HibernateUtil; public classstest {Transaction tx;    Session session;    Transaction tx2;     Session session2; @Test public voidtestbulk () {session=hibernateutil.getsession (); TX=session.begintransaction (); EMP EMP= (emp) Session.get (emp).class, 1);           System.out.println (emp);           Tx.commit ();           Hibernateutil.closesession (); System.out.println ("==================="); Session2=hibernateutil.getsession (); TX2=session2.begintransaction (); EMP EMP2= (emp) Session2.get (emp).class, 1);           System.out.println (emp2);           Tx2.commit ();       Hibernateutil.closesession (); }    }

Small configuration

<?xml version= ' 1.0 ' encoding= ' utf-8 '? ><! DOCTYPE hibernate-     mappingpublic "-//hibernate/hibernate mapping DTD 3.0//en"    "/http WWW.HIBERNATE.ORG/DTD/HIBERNATE-MAPPING-3.0.DTD "> Package    =" cn.happy.entity ">     <  Class name= "emp" table= "emp" >     <cache usage= "read-write"/> <id name=         "empNo" type= "int" column= "EMPNO" >         class= "native" >         </generator>        </id>         < Property name= "empname" type= "string" column= "empname"/>     </class>     </ Hibernate-mapping>

Large configuration

<?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 ">    <hibernate-configuration>    <session-factory>    < propertyname= "connection.driver_class">Oracle.jdbc.OracleDriver</ property>    < propertyname= "connection.url">Jdbc:oracle:thin: @localhost: 1521:ORCL</ property>    < propertyname= "connection.username">Zc</ property>        < propertyname= "connection.password">Zc</ property>        <!--output All SQL statements to the Console.  -        < propertyname= "hibernate.show_sql">True</ property>        <!--Configure Hibernate.cfg.xml to turn on level two caching.  -          < propertyname= "hibernate.cache.use_second_level_cache">True</ property>          <!--Configure a vendor for level two cache -        < propertyname= "hibernate.cache.provider_class">Org.hibernate.cache.EhCacheProvider</ property>                <!--print more beautiful SQL in log and Console.  -        < propertyname= "hibernate.format_sql">True</ property>        <!--automatically generate data tables, update/create -        < propertyname= "hbm2ddl.auto">Update</ property>        <!--dialect -        < propertyname= "hibernate.dialect">Org.hibernate.dialect.Oracle10gDialect</ property>        <!--Associate Small Configuration -                <MappingResource= "cn/happy/entity/emp.hbm.xml"/>        <Class-cacheusage= "read-write"class= "cn.happy.entity.Emp"/>    </session-factory>    </hibernate-configuration>

Jar Package Import

Package cn.happy.entity;
public class EMP {private Integer empNo; private String empname;public Integer getempno () {return empNo;} public void Setempno (Integer empNo) {this.empno = empNo;} Public String getempname () {return empname;} public void Setempname (String Empname) {this.empname = empname;}
}

Hibernate level Two cache configuration