Question

ibatis集成spring 声明式事务管理

找到的教程都是将事务配置在DAO的，可是我现在需要配置事务到业务层，也就是接口实现类的那一层，这个层会调用许多的dao，如何配置呢？我修改过一点，但是事务失败没有回滚。希望谁能给个例子看看……
呃，能不能具体点？

Answer 1

我提供一个实例：

数据库是MYSQL , 数据源是C3P0 ,

-----------
1） 建表语句 ：

----------------
DROP TABLE IF EXISTS book ;

CREATE TABLE book(
id int(11) NOT NULL auto_increment COMMENT 'primary key',
name varchar(60) default NULL COMMENT 'book name',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='my book table';

----------------
注意了，在MYSql 中 表的引擎一定要用InnoDB ,如果用MyISAM 的话，是不支持事务的。

2） JAVA Bean
Book.java

-------------------
package com.spring.demo.bean;

import java.io.Serializable;

public class Book implements Serializable {

public Book(){}

public Book(String name){
this.name = name;
}

/**
* ID
*/
private Integer id ;

/**
* 书名
*/
private String name ;

// getter and setter
public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}

-------------------

3）Book.xml 配置
---------------------
<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-2.dtd">

<sqlMap namespace="Book" >

<typeAlias alias="book" type="com.spring.demo.bean.Book"/>

<resultMap id="result_map_book" class="book" >
<result property="id" column="id" javaType="integer"/>
<result property="name" column="name" javaType="string"/>
</resultMap>

<insert id="insertBook" parameterClass="book">
insert book(name) values(#name#)
</insert>

<update id="updateBook" parameterClass="book">
update book set name=#name# where id=#id#
</update>

<delete id="deleteBook" parameterClass="int">
delete from book where id=#value#
</delete>

<select id="selectBookById" parameterClass="int" resultMap="result_map_book">
select id , name from book where id=#value#
</select>

<select id="selectBookByName" parameterClass="string" resultMap="result_map_book">
select id , name from book where name like #value#
</select>

</sqlMap>
---------------------

4）spring 的 applicationContext.xml

---------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>
<!-- 引入参数配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>jdbc.properties</value>
</list>
</property>
</bean>

<!-- 配置数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass"><value>${jdbc.driverClass}</value></property>
<property name="jdbcUrl"><value>${jdbc.url}</value></property>
<property name="user"><value>${jdbc.user}</value></property>
<property name="password"><value>${jdbc.password}</value></property>
<property name="initialPoolSize"><value>${jdbc.initialPoolSize}</value></property>
<property name="minPoolSize"><value>${jdbc.minPoolSize}</value></property>
<property name="maxPoolSize"><value>${jdbc.maxPoolSize}</value></property>
</bean>

<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource">
<ref local="dataSource"/>
</property>
</bean>

<!-- 事务代理拦截器的配置 -->
<bean id="baseTransactionProxy" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="transactionAttributes">
<props>
<prop key="insert*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>

<!-- ibatis sqlMapClient 配置 -->
<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation">
<value>classpath:sqlMapConfig.xml</value>
</property>
<property name="dataSource">
<ref bean="dataSource"/>
</property>
</bean>

<!-- dao配置 -->
<bean id="ibatis_BookDao" class="com.spring.demo.dao.Ibatis_BookDao">
<property name="sqlMapClient" >
<ref bean="sqlMapClient"/>
</property>
</bean>

<!-- 添加了事务的管理类 -->
<bean id="ibatis_BookManager" parent="baseTransactionProxy">
<property name="target">
<bean class="com.spring.demo.manager.Ibatis_BookManager">
<property name="dao">
<ref bean="ibatis_BookDao"/>
</property>
</bean>
</property>
</bean>

</beans>

---------------

5) 数据源参数配置文件：jdbc.properties
【说明 ：按照你的具体情况来配置】：
------------
jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/springdemo?useUnicode=true&characterEncoding=utf-8

jdbc.user=root

jdbc.password=root

jdbc.initialPoolSize=1

jdbc.minPoolSize=1

jdbc.maxPoolSize=10
------------

6) IBATIS 的初始化配置 sqlMapConfig.xml
------------
<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE sqlMapConfig
PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd">

<sqlMapConfig>

<settings useStatementNamespaces="true" />

<sqlMap resource="com/spring/demo/bean/Book.xml"/>

</sqlMapConfig>
------------

配置完毕，下面是DAO 和 测试方法：

Ibatis_BookDao.java
----------------
package com.spring.demo.dao;

import java.util.List;

import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
import com.spring.demo.bean.Book;

public class Ibatis_BookDao extends SqlMapClientDaoSupport {

/**
* 添加一本书
* @param book
*/
public void insertBook(Book book){
this.getSqlMapClientTemplate().insert("Book.insertBook", book);
}

/**
* 修改一本书
* @param book
*/
public void updateBook(Book book){
this.getSqlMapClientTemplate().update("Book.updateBook", book);
}

/**
* 根据ID来删除一本书
* @param id
*/
public void deleteBook(Integer id){
this.getSqlMapClientTemplate().delete("Book.deleteBook", id);
}

/**
* 根据ID来查询书对象
* @param id
* @return
*/
public Book selectBookById(Integer id){
return (Book)this.getSqlMapClientTemplate().queryForObject("Book.selectBookById", id);
}

/**
* 根据书名来查询相关书记录列表
* @param name
* @return
*/
public List selectBookByName(String name){
return this.getSqlMapClientTemplate().queryForList("Book.selectBookByName", "%"+name+"%" );
}

}

----------------

Ibatis_BookManager.java
-------------------
package com.spring.demo.manager;

import java.util.List;

import com.spring.demo.bean.Book;
import com.spring.demo.dao.Ibatis_BookDao;

public class Ibatis_BookManager {

private Ibatis_BookDao dao = null ;

/**
* 批量添加书本，如果列表长度超过3，就抛出异常
* @param books
*/
public void insertBooks(List books){

for(int i=0 ; i<books.size() ;i++){
if(i>2){
System.out.println("列表太长，中断事务");
throw new RuntimeException("中断事务异常,当列表长度大于3的时候故意抛出，看看事务是否回滚");
}
Book book = (Book)books.get(i);
dao.insertBook(book);
}
}

/**
* 添加一本书
* @param book
*/
public void insertBook(Book book){
this.dao.insertBook(book);
}

/**
* 修改一本书
* @param book
*/
public void updateBook(Book book){
this.dao.updateBook(book);
}

/**
* 根据ID来删除一本书
* @param id
*/
public void deleteBook(Integer id){
this.dao.deleteBook(id);
}

/**
* 根据ID来查询书对象
* @param id
* @return
*/
public Book selectBookById(Integer id){
return this.dao.selectBookById(id);
}

/**
* 根据书名来查询相关书记录列表
* @param name
* @return
*/
public List selectBookByName(String name){
return this.dao.selectBookByName(name);
}

// getter and setter //
public Ibatis_BookDao getDao() {
return dao;
}

public void setDao(Ibatis_BookDao dao) {
this.dao = dao;
}
-------------------

测试类：

IbatisDemo.java
------------------
package com.spring.demo;

import java.util.ArrayList;
import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.spring.demo.bean.Book;
import com.spring.demo.manager.Ibatis_BookManager;
import com.spring.demo.manager.Jdbc_BookManager;

public class IbatisDemo {

/**
* @param args
*/
public static void main(String[] args) {

ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml") ;

Ibatis_BookManager manager = (Ibatis_BookManager)context.getBean("ibatis_BookManager");

List books = new ArrayList();

books.add(new Book("book_10"));
books.add(new Book("book_11"));
books.add(new Book("book_12"));
books.add(new Book("book_13"));
manager.insertBooks(books);

System.out.println("OK");

}

}
------------------

说明：MYSQL 的事务完整性我是测试过的。
之前有个朋友吧数据库换成 SQL SERVER 的时候事务完整性就出现问题。
这个问题有待研究。

Answer 2

在Spring中配置
<!-- Transaction-创建事务管理对象 -->
<bean id="bizTransManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<!-- Aop-声明式事务的配置 -->
<tx:advice id="txAdvice" transaction-manager="bizTransManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS"
read-only="true" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="bidMethods"
expression="execution(* cn.apatch.ordersys.biz.impl.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="bidMethods" />
</aop:config>

Answer 3

需要找本书来看！