Jsp+JavaBean+Servlet网上书店(MVC)
packagebean; importjava.util.Hashtable; importjava.io.Serializable; publicclassCartimplementsSerializable{ privatestaticfinallongserialVersionUID=6152499994129454808L; privateHashtablemyBooks=newHashtable(); publicCart(){} //把书本放入购物车 publicvoidaddBook(Stringbook