Spring Transaction Management 3----Declarative Transaction management (1)

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 Implementation class

/** * @authorAt * Programmatic transaction Management*/ Public classAccountserviceimplImplementsAccountsevice {@Resource (name= "Accountdao")    PrivateAccountdao Accountdao; @Override Public voidTransferFinalString input,FinalString out,FinalDouble Money)        {Accountdao.remove (out, money); intA = 1/0;    Accountdao.add (input, money); }          Public voidSetaccountdao (Accountdao Accountdao) { This. Accountdao =Accountdao; }}

Service Business Layer

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

Applicationcontext.xml configuration file

<?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.spring01.AccountDaoimpl">        < Propertyname= "DataSource"ref= "DataSource"></ Property>    </Bean>    <BeanID= "Accountservice"class= "Com.sdf.spring01.AccountServiceImpl">        < Propertyname= "Accountdao"ref= "Accountdao"/>    </Bean>    <!--Configure transaction manager -    <BeanID= "TransactionManager"class= "Org.springframework.jdbc.datasource.DataSourceTransactionManager">        < Propertyname= "DataSource"ref= "DataSource"/>    </Bean>    <!--Configure agents for the business layer -    <BeanID= "Accountserviceproxy"class= "Org.springframework.transaction.interceptor.TransactionProxyFactoryBean">        <!--To Configure the target object -        < Propertyname= "Target"ref= "Accountservice"/>        <!--inject transaction Management class -        < Propertyname= "TransactionManager"ref= "TransactionManager"/>        <!--Inject Transaction Properties -        < Propertyname= "Transactionattributes">            <Props>                <!--Prop Mode * Propagation: Transaction propagation Behavior * Isolation: Isolation level of the transaction                    * ReadOnly: Read-only (not allowed to execute DEL uodate modify SQL statement) *-exception: This exception occurs rollback * +exceeption: This exception occurs without rollback -                <propKey= "Transfer">Propagation_required</prop>            </Props>        </ Property>    </Bean></Beans>

Test class

/** * @authorAt * Test transfer Information declarative transaction management based on TX/AOP * Create business Layer proxy to agent enhancements*/@RunWith (Springjunit4classrunner.class) @ContextConfiguration ("Classpath:applicationContext01.xml") Public classAccounttest {//@Resource (name= "Accountservice")//private Accountsevice Accountservice;    /*** Inject proxy class*/@Resource (Name= "Accountserviceproxy")    PrivateAccountsevice Accountservice; @Test Public voidtest01 () {Accountservice.transfer ("A", "B", 300d); }     Public voidSetaccountservice (Accountsevice accountservice) { This. Accountservice =Accountservice; }}

Spring Transaction Management 3----Declarative Transaction management (1)