spring注入，提示Invalid property name 'CodedbDao' - not JavaBean compliant解决思路

    <bean id="LoginCodedbDAO" class="com.zjm.ssh2.login.dao.hibernate.CodedbDAO">        <property name="sessionFactory">            <ref bean="sessionFactory" />        </property>    </bean>    <bean id="LoginCodeService" class="com.zjm.ssh2.login.services.CodeService">        <property name="CodedbDao">     <!--[color=#FF0000]这行报错[/color]-->            <ref bean="LoginCodedbDAO" />        </property>    </bean>

package com.zjm.ssh2.login.services;import com.zjm.ssh2.login.dao.iface.ICodedbDAO;import com.zjm.ssh2.login.services.iface.ICodeService;public class CodeService implements ICodeService {    public ICodedbDAO CodedbDao;    public ICodedbDAO getCodedbDao() {        return CodedbDao;    }    public void setCodedbDao(ICodedbDAO codedbDao) {        CodedbDao = codedbDao;    }}

import com.zjm.ssh2.login.dao.iface.ICodedbDAO;public class CodedbDAO extends HibernateDaoSupport implements ICodedbDAO {......}