<!-- Spring使用xml配置，想要创建时注入想要的日期方法：-->
<bean id="accountService" class="org.zy.service.impl.AccountServiceImpl">
    <constructor-arg name="name" value="test"></constructor-arg>
    <constructor-arg name="age" value="1"></constructor-arg>
    <constructor-arg name="birthday" ref="now"></constructor-arg>
</bean>
<!-- 配置一个日期对象 -->
<bean id="now" factory-bean="now1" factory-method="parse">
    <constructor-arg name="source" value="2001-1-1 22:11:11"></constructor-arg>
</bean>
<bean id="now1" class="java.text.SimpleDateFormat" >
    <constructor-arg name="pattern" value="yyyy-MM-dd HH:mm:ss"></constructor-arg>
</bean>

package org.zy.service.impl;

import org.zy.service.IAccountService;

import java.util.Date;

/**
 * 
 */
public class AccountServiceImpl implements IAccountService {
    private String name;
    private Integer age;
    private Date birthday;

    public AccountServiceImpl(String name, Integer age, Date birthday){
        this.name = name;
        this.age = age;
        this.birthday = birthday;

    }
    public void saveAccount(){
        System.out.println("调用了..." + name + "," + age + "," + birthday);
    }
}