Spring——MyBatis DAO Support

1、Spring框架对MyBatis的支持于JDBC支持非常类似，也不需要特殊的事务管理策略，使用的是标准的JDBC DataSourceTransactionManager和JtaTransactionManager。

 

2、使用实例：

  2.1、Spring对MyBatis框架的支持是通过注入SqlMapClient。通过使用SqlMapClientFactoryBean生成SqlMapClient，方法如下：

<beans>

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        <property name="configLocation" value="WEB-INF/sqlmap-config.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

  其中sqlmap-config.xml定义如下：

<sqlMapConfig>
    <sqlMap resource="example/Account.xml"/>
</sqlMapConfig>

  Account.xml定义如下：

<sqlMap namespace="Account">
    <resultMap id="result" class="examples.Account">
        <result property="name" column="NAME" columnIndex="1"/>
        <result property="email" column="EMAIL" columnIndex="2"/>
    </resultMap>
    <select id="getAccountByEmail" resultMap="result">
        select ACCOUNT.NAME, ACCOUNT.EMAIL
        from ACCOUNT
        where ACCOUNT.EMAIL = #value#
    </select>
    <insert id="insertAccount">
        insert into ACCOUNT (NAME, EMAIL) values (#name#, #email#)
    </insert>
</sqlMap>

  领域对象Account的定义如下:

public class Account {
    private String name;
    private String email;
    public String getName() {
        return this.name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEmail() {
        return this.email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
}

2.2 使用SqlMapClientTemplate and SqlMapClientDaoSupport

  2.2.1、实例对象：

public class SqlMapAccountDao extends SqlMapClientDaoSupport implements AccountDao {
    public Account getAccount(String email) throws DataAccessException {
        return (Account) getSqlMapClientTemplate().queryForObject("getAccountByEmail", email);
    }
    public void insertAccount(Account account) throws DataAccessException {
        getSqlMapClientTemplate().update("insertAccount", account);
    }
}

  2.2.2、依赖注入

<beans>
    <bean id="accountDao" class="example.SqlMapAccountDao">
        <property name="sqlMapClient" ref="sqlMapClient"/>
    </bean>
</beans>