spring声明式事务的问题。。。求救啊！！！

Question

配置了spring声明式事务。。只能存。。不能删除和修改这是怎么回事啊求指点啊！！package com.li.entity;import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;import org.hibernate.Session;
import org.springframework.transaction.annotation.Transactional;@Entity
@Transactional
public class Car {
    
private String name;
private int id;

public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} @Id
@GeneratedValue
public int getId() {
return id;
} public void setId(int id) {
this.id = id;
}
public void del(Car obj,Session se){
     se.delete(obj);
   }
public void save(Car obj,Session se){
     se.save(obj);
   }
public void u(Car obj,Session se){
se.beginTransaction();
se.update(obj);
se.getTransaction();
se.close(); 
    }
}
package com.li.entity;import org.hibernate.SessionFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class M { /**
 * @param args
 */
public static void main(String[] args) {
ApplicationContext a =  new ClassPathXmlApplicationContext("beans.xml");
SessionFactory s = (SessionFactory)a.getBean("SessionFactory");
Car c = new Car();
c.setName("dd");
c.save(c, s.openSession());

Car c2 = new Car();
c2.setId(1);
c2.setName("qsddsdq");
c2.del(c2, s.openSession());
}
}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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/spring-aop-2.5.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:annotation-config /> <context:component-scan base-package="com.li" /> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close"> <property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:250/hibernate" />
<property name="username" value="root" />
<property name="password" value="123456" />
</bean>
<bean id="SessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.li.entity</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean> <bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="SessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>

Answer 1

配置了事物管理,但是你要在涉及事物的方法上加@transactional,你试一下.

Answer 2

更新使用merge
Transaction tran = session.beginTransaction();
session.merge(e);
tran.commit();
session.flush();
.......删除的时候也flush一下
session.delete(e);
session.flush();