标签：nbsp depend imp his vat cto 构造 injection 依赖
public class UserServiceImpl implements UserService { private UserDao userDao; public void setUserDao(UserDao userdao) { this.userDao=userdao; } public void getUser() { userDao.getUser(); } }
依赖注入(Dependency Injection)----DI
标签：nbsp depend imp his vat cto 构造 injection 依赖
原文地址：https://www.cnblogs.com/lzk-seven/p/13817987.html
