spring 的生命周期

####spring bean的生命周期

spring IOC的生命周期可以管理bean的生命周期，spring可以在bean的生命周期的特定点执行定制任务

spring IOC的容器对bean的生命周期进行管理的过程：

1. 通过构造器 或者工厂方法进行创建bean的实例
2. 为bean的属性设置值和对其他的bean的引用
3. 调用bean的初始化方法
4. bean可以使用了
5. 打开bean的销毁方法

 <bean id="user" class="com.mvc.model.User" init-method="initTest" destroy-method="destroyTest"></bean>

package com.mvc.model;

import java.io.Serializable;

public class User implements Serializable{
	
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	
	private int userId;
	private String userName;
	private String userTel;
	private int userAccount;
	private int userLevel;
	
	
	
	public User(int userId, String userName, String userTel, int userAccount,
			int userLevel) {
		super();
		this.userId = userId;
		this.userName = userName;
		this.userTel = userTel;
		this.userAccount = userAccount;
		this.userLevel = userLevel;
	}
	
	public User() {
		
		super();
		System.out.println("User constraret start");
	}

	public int getUserId() {
		return userId;
	}
	public void setUserId(int userId) {
		this.userId = userId;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getUserTel() {
		return userTel;
	}
	public void setUserTel(String userTel) {
		this.userTel = userTel;
	}
	public int getUserAccount() {
		return userAccount;
	}
	public void setUserAccount(int userAccount) {
		this.userAccount = userAccount;
	}
	public int getUserLevel() {
		return userLevel;
	}
	public void setUserLevel(int userLevel) {
		this.userLevel = userLevel;
	}

	@Override
	public String toString() {
		return "User [userId=" + userId + ", userName=" + userName
				+ ", userTel=" + userTel + ", userAccount=" + userAccount
				+ ", userLevel=" + userLevel + "]";
	}
	
	
	public void initTest(){
		System.out.println("init test start");
	}
	
	public void destroyTest(){
		System.out.println("destory test end ");
	}
	
}