Spring4 declarative Transaction -02 XML configuration method

1. Configure common Controller,service, DAO beans.

<!--Configure DAO, service -    <BeanID= "Bookshopdao"class= "Com.liujl.spring.tx.xml.BookShopDaoImpl">        < Propertyname= "JdbcTemplate"ref= "JdbcTemplate"></ Property>    </Bean>        <BeanID= "Bookshopservice"class= "Com.liujl.spring.tx.xml.serivice.impl.BookShopServiceImpl">        < Propertyname= "Bookshopdao"ref= "Bookshopdao"></ Property>    </Bean>        <BeanID= "Cashier"class= "Com.liujl.spring.tx.xml.serivice.impl.CashierImpl">        < Propertyname= "Bookshopservice"ref= "Bookshopservice"></ Property>    </Bean>

2. Configure the transaction manager bean

<!--configuration transaction manager hibernate, JPA are similar to this -    <BeanID= "TransactionManager"class= "Org.springframework.jdbc.datasource.DataSourceTransactionManager">        < Propertyname= "DataSource"ref= "DataSource"></ Property>    </Bean>

3. Introduction of the TX namespace

xmlns:tx= "Http://www.springframework.org/schema/tx"

4. Configure the transaction properties (the method name can use wildcard characters *)

<!--Configure transaction Properties -    <Tx:adviceID= "Txadvice"Transaction-manager= "TransactionManager">        <tx:attributes>            <Tx:methodname= "Purchase"Propagation= "REQUIRED"/>            <Tx:methodname= "Checkout"Propagation= "REQUIRED"/>            <Tx:methodname= "get*"read-only= "true"/>                        <Tx:methodname= "find*"read-only= "true"/>                    </tx:attributes>    </Tx:advice>

5. Introduction of the AOP namespace

xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"

6. Configure the tangency point of the transaction and associate the transaction pointcut with the transaction properties

<!--configures the tangency point of a transaction and does not correlate transaction pointcuts with transaction properties -    <Aop:config>        <Aop:pointcutexpression= "Execution (* com.liujl.spring.tx.xml.serivice.*.* (..))"ID= "Txpointcut"/>        <Aop:advisorAdvice-ref= "Txadvice"Pointcut-ref= "Txpointcut"/>    </Aop:config>

Properties of the transaction:  

    Propagation Declares the propagation property of a transaction by default, REQUIRED, which is included in the transaction above, discarding itself to handle the transaction    Requires_new This method as the execution unit, opening a new transaction ( External transactions are suspended before and after method execution)        isolation Specifies the isolation level of the transaction, the most commonly used value is read_committed read and submit

    3. By default, spring's declarative transactions are rolled back as long as all runtimes .    norollbackfor Specifies the exception that does not roll back, other similar

    readOnly Specifies whether a transaction is read- only , which means that the transaction reads only the data but does not update the data, which    helps the database engine to optimize the transaction. If it is really a read-only database worthwhile method, you should set Readonly=true    

    Timeout Specifies the amount of time a transaction can occupy before forcing a rollback

Spring4 declarative Transaction -02 XML configuration method