vue如果出现错误：uncaught typeerror cannot read property contains of null，检查一下body标签的规范。不要乱套

发现是这个地方写错了Vue.use(VueWaypoint)new Vue({el: 'body',router,render: h => h(Mobile)})这个el应该写#app，不能随便乱写。。操

https://github.com/VictorAlbertos/RxCache/issues/73新建一个类继承泛型即可public class UserEntitySet extends CommonListSubject<UserEntity> {}