http://wenku.baidu.com/link?url=02LPBvoYztYSd_htlE4wqzJPsA3pu8yKhIZ9yUiyvh0GT-S9D8TCXZ4flsaewkmnN9AY1bdHKaUvfbjaj3cHYFoB7bGaMu1FLVKD1IG2rWS
序列化、饭序列化的好处:
1)可以将对象持久化到文件中
2)方便对象之间的数据传输