ibatis2与Spring2.5集成

代码即王道。集成方式有三种，详见JUnit4.x测试类的注释。。

首先是用到的实体类User.java

package com.jadyer.model; import java.util.Date; public class User { private Integer id; private String name; private Date birth; /*--三个属性的setter和getter略--*/ public User(){} public User(Integer id, String name, Date birth){ this.id = id; this.name = name; this.birth = birth; } }

相应的实体类映射文件User.xml

<?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="User"> <typeAlias alias="user" type="com.jadyer.model.User"/> <insert id="insertUser" parameterClass="user"> insert into T_USER(id, name, birth) values(#id#, #name#, #birth#) </insert> </sqlMap>

下面是位于CLASSPATH中的ibatis2.x的全局配置文件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> <!-- 使用spring之后，数据源的配置移植到了spring上，所以iBATIS本身的配置可以取消 --> <sqlMap resource="com/jadyer/model/User.xml" /> </sqlMapConfig>

下面是位于CLASSPATH中的Spring2.5的全局配置文件applicationContext.xml

<?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: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/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="oracle.jdbc.OracleDriver"/> <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:jadyer"/> <property name="username" value="scott"/> <property name="password" value="jadyer"/> </bean> <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:SqlMapConfig.xml" /> <property name="dataSource" ref="dataSource" /> </bean> <bean id="userDao" class="com.jadyer.dao.ibatis.UserDaoIbatis"> <property name="sqlMapClient" ref="sqlMapClient" /> </bean> <!-- 声明一个事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 声明一个已被纳入事务管理的DAO接口实现类的代理类 --> <bean id="userDaoProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"> <property name="transactionManager" ref="transactionManager" /> <property name="target" ref="userDao" /> <property name="transactionAttributes"> <props> <prop key="insert*">PROPAGATION_REQUIRED</prop> <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop> </props> </property> </bean> </beans>

用到的操纵数据库表的接口UserDao.java

package com.jadyer.dao; import java.util.List; import com.jadyer.model.User; public interface UserDao { public void insertUser(User user); /** * 批量更新 */ public void batchInsertUser(final List<User> userList, final String statement); }

然后是该接口的实现类UserDaoIbatis.java

package com.jadyer.dao.ibatis; import java.sql.SQLException; import java.util.List; import org.springframework.dao.DataAccessException; import org.springframework.orm.ibatis.SqlMapClientCallback; import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport; import com.ibatis.sqlmap.client.SqlMapExecutor; import com.jadyer.dao.UserDao; import com.jadyer.model.User; /** * SqlMapClientDaoSupport是Spring面向ibatis2.x的辅助类，它负责调度DataSource * SqlMapClientTemplate对传统SqlMapClient调用模式进行了封装，简化了上层访问代码 * SqlMapClientTemplate能够完成ibatis操作，而DAO则通过对此类进行扩展获得上述功能 */ public class UserDaoIbatis extends SqlMapClientDaoSupport implements UserDao { public void insertUser(User user) { getSqlMapClientTemplate().insert("insertUser", user); } public void batchInsertUser(final List<User> userList, final String statement) throws DataAccessException { getSqlMapClientTemplate().execute(new SqlMapClientCallback() { public Object doInSqlMapClient(SqlMapExecutor executor) throws SQLException { executor.startBatch(); int batch = 0; for(User user : userList){ executor.update(statement, user); batch++; if(200 == batch){ //每200条批量提交一次 executor.executeBatch(); batch = 0; } } executor.executeBatch(); return null; } }); } }

接着是使用了JUnit4.x的单元测试类IbatisSpringTest.java

package com.jadyer.test; import java.io.FileNotFoundException; import java.sql.Date; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.jadyer.dao.UserDao; import com.jadyer.model.User; /** * Ibatis2.x与Spring的三种集成方式 * @see ---------------------------------------------------------------------------------------------------------- * @see 第一种：将sqlMapClient注入给继承了SqlMapClientDaoSupport类的DAO接口实现类 * @see 示例代码，请见本例。并且此时不需要在DAO接口实现类中添加setSqlMapClient()方法 * @see 优点是可以直接使用Spring封装后的getSqlMapClientTemplate，缺点是不便于移植 * @see ---------------------------------------------------------------------------------------------------------- * @see 第二种：将sqlMapClient注入给未继承任何类的DAO接口实现类 * @see 此时需要在DAO接口实现类中增加setSqlMapClient(SqlMapClient sqlMapClient)方法 * @see 然后我们就可以基于原生的iBATIS API来编程，而无需对Spring产生任何依赖 * @see ---------------------------------------------------------------------------------------------------------- * @see 第三种：将sqlMapClientTemplate注入给DAO接口实现类 * @see 此时需要在DAO接口实现类中增加setSqlMapClientTemplate(SqlMapClientTemplate sqlMapClientTemplate)方法 * @see <bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate"> * @see <property name="sqlMapClient" ref="sqlMapClient" /> * @see </bean> * @see <bean id="userDao" class="com.jadyer.dao.ibatis.UserDaoIbatis"> * @see <property name="sqlMapClientTemplate" ref="sqlMapClientTemplate" /> * @see </bean> * @see ---------------------------------------------------------------------------------------------------------- */ public class IbatisSpringTest { @Test public void insert() throws FileNotFoundException{ ApplicationContext factory = new ClassPathXmlApplicationContext("applicationContext.xml"); // UserDao userDao = (UserDao)factory.getBean("userDaoProxy"); //加入事务控制 UserDao userDao = (UserDao)factory.getBean("userDao"); //未加事务控制 User user = new User(22, "张起灵", Date.valueOf("2011-03-26")); userDao.insertUser(user); } }

最后是用到的数据库脚本文件

-- Oracle 11g -- Create table create table t_user( id number, name varchar2(10), birth date );