Horse Soldier spring-Declarative Transaction Management-xml

1.com.cy.model User.java and Log.java entities are the same as in the previous section;

2.DAO implementation class Com.cy.dao.impl in the same Userdaoimpl, Logdaoimpl.java and the previous section;

3.userservice.java:

 PackageCom.cy.service;ImportJavax.annotation.Resource;Importorg.springframework.stereotype.Component;Importorg.springframework.transaction.annotation.Transactional;ImportCom.cy.dao.LogDAO;ImportCom.cy.dao.UserDAO;ImportCom.cy.model.Log;ImportCom.cy.model.User; @Component ("UserService") Public classUserService {@ResourcePrivateUserdao Userdao; @ResourcePrivateLogdao Logdao;  Public voidinit () {System.out.println ("Init"); }         PublicUser GetUser (intID) {return NULL; }        /*** Record a log while inserting a user*/     Public voidAdd (user user) {userdao.save (user); Log log=NewLog (); Log.setmsg ("A user saved!");    Logdao.save (log); }         PublicUserdao Getuserdao () {returnUserdao; }         Public voidSetuserdao (Userdao Userdao) { This. Userdao =Userdao; }         Public voiddestroy () {System.out.println ("Destroy"); }}

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Configuration of transaction management in 4.beans.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-2.5. XSD Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring -context-2.5.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/aop/s Pring-aop-2.5.xsd Http://www.springframework.org/schema/tx Http://www.springframework.org/schema/tx/sp Ring-tx-2.5.xsd ">               <Context:annotation-config/>    <Context:component-scanBase-package= "Com.cy"/>        <!--if the following placeholder is used, please look under locations -    <Beanclass= "Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        < Propertyname= "Locations">            <value>Classpath:jdbc.properties</value>        </ Property>    </Bean>    <BeanID= "DataSource"Destroy-method= "Close"class= "Org.apache.commons.dbcp.BasicDataSource">        < Propertyname= "Driverclassname"value= "${jdbc.driverclassname}"/>        < Propertyname= "url"value= "${jdbc.url}"/>        < Propertyname= "username"value= "${jdbc.username}"/>        < Propertyname= "Password"value= "${jdbc.password}"/>    </Bean>         <!--Initialize Sessionfactory -    <BeanID= "Sessionfactory"class= "Org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">        < Propertyname= "DataSource"ref= "DataSource" />         < property name= "Packagestoscan">             <List>                <value>Com.cy.model</value>            </List>        </ Property>        < Propertyname= "Hibernateproperties">            <Props>                <propKey= "Hibernate.dialect">Org.hibernate.dialect.MySQLDialect</prop>                <propKey= "Hibernate.show_sql">True</prop>            </Props>        </ Property>    </Bean>        <BeanID= "Txmanager"class= "Org.springframework.orm.hibernate3.HibernateTransactionManager">          < Propertyname= "Sessionfactory"ref= "Sessionfactory" />    </Bean>        <Aop:config>        <Aop:pointcutID= "Bussinessservice"expression= "Execution (public * com.cy.service). *.*(..))" />        <Aop:advisorPointcut-ref= "Bussinessservice"Advice-ref= "Txadvice" />    </Aop:config>        <Tx:adviceID= "Txadvice"Transaction-manager= "Txmanager">        <tx:attributes>            <Tx:methodname= "GetUser"read-only= "true" />            <Tx:methodname= "add*"Propagation= "REQUIRED"/>        </tx:attributes>    </Tx:advice>    </Beans>

5. Test the code:

 PackageCom.cy.service;Importorg.junit.Test;ImportOrg.springframework.context.support.ClassPathXmlApplicationContext;ImportCom.cy.model.User; Public classuserservicetest {@Test Public voidTestadd ()throwsException {classpathxmlapplicationcontext ctx=NewClasspathxmlapplicationcontext ("Beans.xml"); UserService Service= (UserService) ctx.getbean ("UserService");        System.out.println (Service.getclass ()); Service.add (NewUser ());    Ctx.destroy (); }}

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1) Normal test, no exception thrown, Ok,user and log are inserted;

2) An exception was thrown manually in the Save method in Logdaoimpl and the insert failed; The user did not insert successfully and has rolled back.

Horse Soldier spring-Declarative Transaction Management-xml