Integrated configuration of jpa2.0 and spring

Jpa2.0 is integrated with spring, and the persistence. xml file can be required or not.

For persistence. XML, you only need to make the following simple configuration:

 <?  XML version = "1.0" encoding = "UTF-8"  ?>  <  Persistence  Version  = "2.0"  Xmlns  = "Http://java.sun.com/xml/ns/persistence"  Xmlns: xsi  = "Http://www.w3.org/2001/XMLSchema-instance" Xsi: schemalocation  = "Http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"  >                          <  Persistence-Unit  Name  = "App"  Transaction-type  = "Resource_local"  />              </  Persistence  > 

The spring configuration is as follows:

<! --  Data Source  -->          <  Bean  ID  = "Datasource"  Class  = "Com. jolbox. bonecp. bonecpdatasource"  Destroy-Method  = "Close"  >              <! --  Database-driven  -->              < Property  Name  = "Driverclass"  Value  = "$ {JDBC. driverclassname }"   />              <! --  Jdbcurl of the driver  -->              <  Property  Name  = "Jdbcurl"  Value  = "$ {JDBC. url }"   />             <! --  Database username  -->              <  Property  Name  = "Username"  Value  = "$ {JDBC. Username }"   />              <! --  Database Password  -->              <  Property  Name  = "Password" Value  = "$ {JDBC. Password }"   />              <! --  Check the idle connection interval in the database connection pool. Unit: minute. Default Value: 240. If you want to cancel the interval, set it to 0.  -->              <  Property  Name  = "Idleconnectiontestperiod"  Value  = "$ {Bonecp. idleconnectiontestperiod }"   />              <! --  Maximum Lifetime of unused connections in the connection pool. Unit: minute. Default Value: 60. If you want to survive forever, set it to 0. -->              <  Property  Name  = "Idlemaxage"  Value  = "$ {Bonecp. idlemaxage }"   />              <! --  Maximum number of connections per Partition  -->              <  Property  Name  = "Maxconnectionsperpartition"  Value = "$ {Bonecp. maxconnectionsperpartition }"   />              <! --  Minimum number of connections per Partition  -->              <  Property  Name  = "Minconnectionsperpartition"  Value  = "$ {Bonecp. minconnectionsperpartition }"   />              <! --  Number of partitions. The default value is 2. The minimum value is 1. The recommended value is 3-4, depending on the application.  -->             <  Property  Name  = "Partitioncount"  Value  = "$ {Bonecp. partitioncount }"   />              <! --  Each time you connect to a database, you need to get a few at a time. The default value is 2.  -->              <  Property  Name  = "Acquireincrement"  Value  = "$ {Bonecp. acquireincrement }"  />              <! --  Cache prepared statements size. Default Value: 0  -->              <  Property  Name  = "Statementscachesize"  Value  = "$ {Bonecp. statementscachesize }"   />              <! --  The number of Assistant processes that are released in each partition. The default value is 3. Too many assistant processes will affect your performance unless you have done a lot of work during the connection time of a database.  -->              < Property  Name  = "Releasehelperthreads"  Value  = "$ {Bonecp. releasehelperthreads }"   />         </  Bean  >                <! --  JPA Entity Manager Factory  -->         <  Bean  ID  = "Entitymanagerfactory" Class  = "Org. springframework. Orm. JPA. localcontainerentitymanagerfactorybean"  >                        <  Property  Name  = "Datasource"  Ref  = "Datasource"  />                      <  Property  Name  = "Persistenceprovider"  Ref = "Persistenceprovider"  />                      <  Property  Name  = "Jpavendoradapter"  Ref  = "Jpavendoradapter"  />                      <  Property  Name  = "Jpadialect"  Ref  = "Jpadialect"  />                                           <  Property  Name  = "Packagestoscan"  Value  = "Cn. luxh. App. Entity"  />                                          <  Property  Name  = "Jpaproperties"  >                          <  Props  >                              <  Prop Key  = "Hibernate. dialect"  > Org. hibernate. dialect. mysql5dialect </  Prop  >                              <  Prop  Key  = "Hibernate. Connection. driver_class"  > Com. MySQL. JDBC. Driver </  Prop  >                              < Prop  Key  = "Hibernate. max_fetch_depth"  > 3 </  Prop  >                              <  Prop  Key  = "Hibernate. JDBC. fetch_size"  > 18 </  Prop  >                              < Prop  Key  = "Hibernate. JDBC. batch_size"  > 10 </  Prop  >                              <  Prop  Key  = "Hibernate. hbm2ddl. Auto"  > Update </  Prop  >                              < Prop  Key  = "Hibernate. show_ SQL"  > True </  Prop  >                              <  Prop  Key  = "Hibernate. format_ SQL"  > True </  Prop  >                              < Prop  Key  = "Javax. Persistence. validation. mode"  > None </  Prop  >                          </  Props  >                      </  Property  >         </  Bean  >         <! -- Used to specify the persistence implementation factory class  -->         <  Bean  ID  = "Persistenceprovider"  Class  = "Org. hibernate. EJB. hibernatepersistence"  />         <! --  Used to set specific attributes of the JPA implementation vendor  -->         <  Bean  ID  = "Jpavendoradapter" Class  = "Org. springframework. Orm. JPA. Vendor. hibernatejpavendoradapter"  >               <  Property  Name  = "Database"  Value  = "MySQL"  />           </  Bean  >           <! --  Used to specify some advanced features  -->        <  Bean  ID  = "Jpadialect"  Class  = "Org. springframework. Orm. JPA. Vendor. hibernatejpadialect"  />                  <! --  Transaction Manager  -->           <  Bean  ID  = "Txmanager"  Class = "Org. springframework. Orm. JPA. jpatransactionmanager"  >               <  Property  Name  = "Entitymanagerfactory"  Ref  = "Entitymanagerfactory"   />           </  Bean  >          

This should be a good integration between jpa2.0 and spring.

If you do not need the persistence. xml file, delete it.