子类获取父类的属性为什么会是空.(spring)

Question

<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

classpath:/datasource/jdbc.properties

<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

<bean id="aisBusBIZ" class="com.huawei.bus.biz.impl.AisBusBizImpl">
    <property name="aisBusDAO" ref="aisBusDAO"/>
</bean>

<bean id="aisBusDAO" class="com.huawei.bus.dao.impl.AisBusDAOImpl"/>

<bean id="getSqlValue" class="com.huawei.bus.util.GetSqlValue">
    <property name="map">
        <map>
            <entry key="query_subscriber" value="SELECT SUBSCRIBERKEY,APPLYTIME,EXPIRETIME FROM CBE_SUBSCRIBER"/>
        </map>
    </property>
</bean>

---------AbstractSupperDao.java文件
public class AbstractSupperDao {
public JdbcTemplate jdbctemplate;

public JdbcTemplate getJdbctemplate() {
return jdbctemplate;
}

public void setJdbctemplate(JdbcTemplate jdbctemplate) {
this.jdbctemplate = jdbctemplate;
}
}

--------AisBusDAOImpl.java文件
public class AisBusDAOImpl extends AbstractSupperDao implements IAisBusDAO {

@SuppressWarnings("unchecked")
public List querySubscriber() {
GetSqlValue getSqlValue = (GetSqlValue)PubUtilServiceLocator.getInstance().getService("getSqlValue");
String sql = getSqlValue.getMap().get(SqlKeyUtils.QUERY_SUBSCRIBER);
List list = this.jdbctemplate.queryForList(sql);
for(Object obj : list){
Map map = (Map)obj;
Integer sbuscriberkey = Integer.valueOf(String.valueOf((map.get("sbuscriberkey"))));
String applytime = String.valueOf(map.get("applytime"));
String expiretime = String.valueOf(map.get("expiretime"));

System.out.println("用户键值:" + sbuscriberkey + ";应用时间:" + applytime +
";有限期:" + expiretime);
}
return list;
}
}

Answer 1