Spring事务配置笔记(实现不同Service间调用事务)

作者:fbysss
msn:[email protected] 
blog:blog.csdn.net/fbysss
声明：本文由fbysss原创，转载请注明出处 
关键字：Spring,事务处理
一、关键配置示例：

< bean  id ="sessionFactory"
        class ="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
         < property  name ="dataSource" >
             < ref  local ="dataSource"   />
         </ property >
    
         <!--  bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/ -->
     < bean  id ="transactionManager"  class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
         < property  name ="sessionFactory" >
             < ref  local ="sessionFactory"   />
         </ property >
     </ bean >

     <!--  Hibernate Transaction Interceptor Definition  -->
     < bean  id ="hibernateTransactionInterceptor"
        class ="org.springframework.transaction.interceptor.TransactionInterceptor"
        parent ="transactionIntercetorTemplate" >
         < property  name ="transactionManager" >
             < bean  id ="hibernateTransactionManager"
                class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
                 < property  name ="sessionFactory" >
                     < ref  bean ="sessionFactory"   />
                 </ property >
             </ bean >
         </ property >
     </ bean >

     <!--  Transction Intercetor's Template  -->
     < bean  id ="transactionIntercetorTemplate"  abstract ="true" >
         < property  name ="transactionAttributes" >
             < props >
                 < prop  key ="get*" > PROPAGATION_REQUIRED,readOnly </ prop >
                 < prop  key ="is*" > PROPAGATION_REQUIRED,readOnly </ prop >
                 < prop  key ="check*" > PROPAGATION_REQUIRED,readOnly </ prop >
                 < prop  key ="insert*" > PROPAGATION_REQUIRED </ prop >
                 < prop  key ="update*" > PROPAGATION_REQUIRED </ prop >
                 < prop  key ="delete*" > PROPAGATION_REQUIRED,-BussException </ prop >
                 < prop  key ="*" > PROPAGATION_REQUIRED </ prop >
             </ props >
         </ property >
     </ bean >

     <!--  定义自动代理生成器 -->
     < bean  id ="autoProxyCreator"
        class ="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator" >
         < property  name ="interceptorNames" >
             < list >
                 < idref  bean ="hibernateTransactionInterceptor"   />
                 < idref  bean ="jdbcTransactionInterceptor"   />
             </ list >
         </ property >
         < property  name ="beanNames" >
             < value > *Service </ value >  
             <!-- list>
                <idref bean="bookService" />                                        
            </list -->
             <!-- 添加Service bean -->
         </ property >
     </ bean >
     < bean  id ="hibernateDaoTemplate"  abstract ="true" >
         < property  name ="sessionFactory" >
             < ref  bean ="sessionFactory"   />
         </ property >
     </ bean >
     <!--  Dao 定义  -->
     < bean  id ="imageDao"  class ="com.fbyssssite.dao.ImageDao"
        parent ="hibernateDaoTemplate"   />
    <bean id="imageFolderDao" class="com.fbyssssite.dao.ImageFolderDao"
        parent="hibernateDaoTemplate" />
     <!--  Service 定义  -->
     < bean  id ="imageService"  class ="com.fbyssssite.bo.ImageService"  autowire ="byName" >
         < property  name ="dao"  ref ="imageDao" ></ property >
     </ bean >     
    <bean id="imageFolderService" class="com.fbyssssite.bo.ImageFolderService" autowire="byName">
        <property name="dao" ref="imageFolderDao"></property>
    </bean>    

二、测试代码：  

public   void  delete(Object entity,IBaseUser user)  throws  BussException  ... {
   super.delete(entity, user);
   ImageFolder folder = (ImageFolder)entity;
   String folderId = folder.getId();   
   IImageService imageService  = ServiceFactory.getImageService();
   imageService.deleteAllInFolder(folderId,user);   
  }
   public   void  deleteAllInFolder(String id,IBaseUser sysUser)  throws  BussException  ... {
   log.info("删除图片夹'"+id+"'中的图片...");
   throw new BussException(1,"临时测试：测试事务是否生效的异常。测试完毕后删除此语句。",log);
   /**//*
   StringBuffer sql = new StringBuffer("delete ");
   sql.append("from ");
   sql.append(getEntityClassName());
   SqlBuilder sqlBuilder  = SqlBuilder.getInstance();
   sqlBuilder.appendWhereCondition(sql, "folderId='"+id+"'");
   bulkUpdate(sql.toString(), sysUser);
   */   
  }

三、测试效果：
抛出BussException之后，imageFolder实体并没有被删除，而是回滚了。
四、注意事项：
1.其中的 BussException是一个CheckedException(继承自Exception)，这里不过是一个例子，如果其他方法需要同样的方式处理事务，也要加上-BussException，否则不能回滚；如果是一个UnCheckedException，就不需要在这里配置，默认就会回滚。
2.如果采用MySQL，show table status可以查看表的ENGINE类型，MyISAM是不支持事务的，如果需要事务，应该改成InnoDB:alter table [tablename] engine = InnoDB;