Spring Transaction Management 5-----Declarative Transaction Management (3)

Declarative transaction management based on annotations

Note Driver <tx:annotation-driven transaction-manager= "TransactionManager"/>is required in the configuration file, plus @ in the business layer class Transactional Annotations

This kind of transaction management method is very simple, but the note-loading business layer class, for late maintenance does not give the AspectJ Way of transaction management simple.

DAO layer

/** * @authorAt * Transfer DAO layer*/ Public InterfaceAccountdao {/*** Transfer Money *@paramOuter *@param Money*/     Public voidRemove (String outer,double money); /*** Transfer Money *@paramInput *@param Money*/     Public voidAdd (String input,double money);}

DAO layer Implementation Class

/*** Transfer DAO layer Implementation*/ Public classAccountdaoimplextendsJdbcdaosupportImplementsaccountdao{/*** Transfer Money *@paramOuter *@param Money*/@Override Public voidRemove (string outer, Double money) {String SQL= "Update account Set money = money-?" WHERE name =? ";  This. Getjdbctemplate (). Update (SQL, money,outer); }    /*** Transfer Money *@paramInput *@param Money*/@Override Public voidAdd (string input, Double money) {String SQL= "Update account Set money = Money +?" WHERE name =? ";  This. Getjdbctemplate (). Update (SQL, money,input); }}

Service Business Layer

/**@author*/Publicinterface  Accountsevice {    publicvoid transfer (String input,string out,double money); // Consumption }

Service Business Layer Implementation class

/** * @authorAt * Programmatic Transaction Management * * Propagation Transaction propagation behavior * Isolation TRANSACTION ISOLATION LEVEL * ReadOnly         Read-only * rollbackfor This exception occurs rollback * Norollbackfor The exception does not roll back * norollbackforclassname Occurrence of the specified exception does not roll back*/@Transactional (Propagation=propagation.required,isolation=isolation.default,readonly=false) Public classAccountserviceimplImplementsAccountsevice {@Resource (name= "Accountdao")    PrivateAccountdao Accountdao; @Override Public voidTransferFinalString input,FinalString out,FinalDouble Money) {Accountdao.remove (out, money);//int a = 1/0;accountdao.add (input, money); }              Public voidSetaccountdao (Accountdao Accountdao) { This. Accountdao =Accountdao; }}

Applicationcontext.xml

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "Http://www.springframework.org/schema/context"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:tx= "Http://www.springframework.org/schema/tx"xsi:schemalocation= "Http://www.springframework.org/schema/beans Http://www.springframework.org/schema/beans/spring-beans . xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-con        Text.xsd Http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/aop/spring-aop.xsd ">    <!--introducing an external properties file -    <Context:property-placeholder Location= "Classpath:jdbc.properties"/>        <!--Configuring the C3P0 connection pool -    <BeanID= "DataSource"class= "Com.mchange.v2.c3p0.ComboPooledDataSource">        < Propertyname= "Driverclass"value= "${jdbc.driverclass}"/>        < Propertyname= "Jdbcurl"value= "${jdbc.url}"/>        < Propertyname= "User"value= "${jdbc.username}"/>        < Propertyname= "Password"value= "${jdbc.password}"/>    </Bean>        <!--DAO layers and classes of business -    <BeanID= "Accountdao"class= "Com.sdf.spring03.AccountDaoimpl">        < Propertyname= "DataSource"ref= "DataSource"></ Property>    </Bean>    <BeanID= "Accountservice"class= "Com.sdf.spring03.AccountServiceImpl">        < Propertyname= "Accountdao"ref= "Accountdao"/>    </Bean>    <!--Configure transaction manager -    <BeanID= "TransactionManager"class= "Org.springframework.jdbc.datasource.DataSourceTransactionManager">        < Propertyname= "DataSource"ref= "DataSource"/>    </Bean>        <!--Opening annotation Transactions -    <Tx:annotation-drivenTransaction-manager= "TransactionManager"/></Beans>

Test class

/** * @authorat * Test transfer information declarative transaction management based on annotation management*/@RunWith (Springjunit4classrunner.class) @ContextConfiguration ("Classpath:applicationContext03.xml") Public classaccounttest {@Resource (name= "Accountservice")    PrivateAccountsevice Accountservice; @Test Public voidtest01 () {Accountservice.transfer ("A", "B", 300d); }     Public voidSetaccountservice (Accountsevice accountservice) { This. Accountservice =Accountservice; }}

Spring Transaction Management 5-----Declarative Transaction Management (3)