/*** @author pdai*/@RepositorypublicclassUserDaoImpl{/*** mocked to find user list.** @return user list*/publicList<User>findUserList(){returnCollections.singletonList(newUser("pdai",18));}}
packagetech.pdai.springframework.service;importjava.util.List;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Service;importtech.pdai.springframework.dao.UserDaoImpl;importtech.pdai.springframework.entity.User;/*** @author pdai*/@ServicepublicclassUserServiceImpl{/*** user dao impl.*/@AutowiredprivateUserDaoImpl userDao;/*** find user list.** @return user list*/publicList<User>findUserList(){return userDao.findUserList();}}
在App中扫描tech.pdai.springframework包
packagetech.pdai.springframework;importjava.util.List;importorg.springframework.context.annotation.AnnotationConfigApplicationContext;importtech.pdai.springframework.entity.User;importtech.pdai.springframework.service.UserServiceImpl;/*** @author pdai*/publicclassApp{/*** main interfaces.** @param args args*/publicstaticvoidmain(String[] args){// create and configure beansAnnotationConfigApplicationContext context =newAnnotationConfigApplicationContext("tech.pdai.springframework");// retrieve configured instanceUserServiceImpl service = context.getBean(UserServiceImpl.class);// use configured instanceList<User> userList = service.findUserList();// print info from beansuserList.forEach(a ->System.out.println(a.getName()+","+ a.getAge()));}}
后端 Java 接口实现 首先,确保你已经配置好数据库连接信息,并且已经创建了相应的数据库表。 创建一个实体类 User 来表示用户信息: // User.java
public class User {private Long id;private String username;private String email;// 省略…
五、用go语言,对区间树 T 和一个区间 i ,请修改有关区间树的过程来支持新的操作 INTERVALSEARCH-EXACTLY(T,i) ,它返回一个指向 T 中结点 x 的指针,使得 x.int. lowi.low 且 x.int.high i.high ;或者,如果…