84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
在实现用户登录功能时,使用普通的new对象方法使工作类(User)对工具类(Db,Validate,View)产生了严重的依赖关系及耦合问题。虽然可以使用依赖注入解决耦合问题,但必须要对工具类的方法或参数了解,很容易造成意想不到的问题出现