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本文详细对比了Spring框架中使用JdbcDaoSupport类和注解配置的方式实现数据访问层的两种方法。一种是在Java类中直接使用@Autowired注解注入JdbcTemplate，另一种是通过继承JdbcDaoSupport并调用super.getJdbcTemplate()获取JdbcTemplate实例。同时提供了对应的XML配置示例。

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关于JdbcDaoSupport的两种写法：

注解的配置：
.java

@Repository("accountDao")
public class AccountDao implements IAccountDao {


    @Autowired
    private JdbcTemplate getJdbcTemplate;
    
    public void updateAccount(Account account){
        getJdbcTemplate.update("update account set name=?,money=? where id=?",account.getName(),account.getMoney(),account.getId());
    }
}

.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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">


    <context:component-scan base-package="com.springTx"></context:component-scan>
</beans>

.xml配置的

.java


public class AccountDao extends JdbcDaoSupport implements IAccountDao {

    public void updateAccount(Account account){
        super.getJdbcTemplate().update("update account set name=?,money=? where id=?",account.getName(),account.getMoney(),account.getId());
    }
}

.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: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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
    <context:component-scan base-package="com.springTx"></context:component-scan>
    <bean id="accountDao" class="com.springTx.Dao.Impl.AccountDao">
        <property name="jdbcTemplate" ref="jdbcTemplate"></property>
    </bean>
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dateSource"></property>
    </bean>
 </beans>