i just begin with transaction, please help me

my config file is:


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
................................... oracle ....
</bean>

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSou rceTransactionManager">
<property name="dataSource"> <ref local="dataSource"/></property>
</bean>

<!-- configure JdbcTemplate with the same datasource -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" >
<property name="dataSource" ref="dataSource" />
</bean>

<bean id="txProxyTemplate" abstract="false" class="org.springframework.transaction.interceptor .TransactionProxyFactoryBean">
<property name="transactionManager" ref ="transactionManager"/>
<property name="target" ref ="targetBean"/>
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>

<bean id="targetBean" class="transactionPack.TransactionDaoImpl">
<property name="jdbcTemplate" ref="jdbcTemplate"/>
</bean>
</beans>

-------------------------------------------------
code of Class MyDao

public interface MyDao {
void update(String nendo);
void insert(String nendo);
void delete(String nendo);
void querySql();
}
-------------------------------------------------
code of class TransactionDaoImpl


public class TransactionDaoImpl extends JdbcDaoSupport implements MyDao{

private JdbcTemplate jdbcTemplate = new JdbcTemplate();

public void delete(){
getJdbcTemplate().update("DELETE Test WHERE AAA= '2007'");
}

public void insert(){
getJdbcTemplate().execute("INSERT INTO Test (AAA, BBB, CCC, DDD) VALUES('2008', 120, 35, 45)");
}

public void querySql() {
System.out.println(getJdbcTemplate().queryForList( "SELECT * FROM Test "));
}

public void update(){
getJdbcTemplate().update("UPDATE Test SET BBB= '10' AND CCC = '20' DDD = '30' AND WHERE AAA = '2007'");
}

}


---------------------------------
main class


public class MainClass {
/**
* @param args
*/
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("simpleTransaction. xml");
MyDao service =(MyDao)ctx.getBean("txProxyTemplate");

service.delete();// ---> delete Ok

service.insert(); //--->> throws Exception, cause insert same primary key

// service.querySql();
}
}

problem is it still delete although Exception happened

i don't know why . hic please help me.