1、service包下 –> New -> Interface
2、 Name -> UserService -> Finish
3、UserService 内容
package com.yg.service;
import java.util.List;
import com.yg.entity.User;
//类名首字母大写
public interface UserService {
//方法名首字母小写
public User login(String userno,String pwd);
public List<User> get_All_Users();
public Boolean add_User(User user);
public Boolean delete_User(String id);
public Boolean edit_User(User user);
}
