SpringBoot---项目框架

1.简介

此次博客主要记录搭建Springboot框架及代码规范
需求: 成功与数据库交互
整合 Mybatis-plus

1.项目结构

项目需要引入Maven依赖，在 pom.xml中配置好
文件配置如下

- application.yml    写入数据库配置

server:
  port: 8080                   服务启动端口号


spring:
  datasource:
    url: jdbc:mysql://fitmgr-mysql:3306/java?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=GMT%2B8
   
                   Mysql数据库端口号为3306     数据库名称为java
                               
    username: root
    password: root             配置用户名和密码
    driver-class-name: com.mysql.jdbc.Driver
    type: com.zaxxer.hikari.HikariDataSource

  typeAliasesPackage: com.example.demo.entity

mapper目录—UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.demo.Mapper.UserMapper">
</mapper>

写入mapper文件所在位置

2. 各个包作用

- controller    路由层，写入交互路径
- entity        数据库表结构  写入数据库表字段
- mapper        工具接口
- request       封装请求实体类

- service
  -impl         实际业务代码

原始接口--抽象接口继承Isevice

3.代码

UserService 抽象接口

public interface UserService extends IService<User> {

    User getid(String uid);

    User create_user(UserCreate userCreate);

}

UserMapper–工具

@Component
public interface UserMapper extends BaseMapper<User> {

    }

User–数据库表结构

@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class User implements Serializable {

    private static final long serialVersionUID = 1L;
    
    @TableId(value = "uid", type = IdType.INPUT)
    private String uid;
    
    private String name;
    
    private String status;
}

UserCreate–实体类

@Data
public class UserCreate {

    private String uid;
    private String name;
    private String status;

}

UserController–控制层

@Data
@RestController
public class UserController {
    @Autowired
    private UserServiceImpl ll;

    @GetMapping("/findid/{uid}")
    public User getID(@PathVariable String uid) {
        return ll.getid(uid);

    }
    @PostMapping("/create")
    public User create(@RequestBody UserCreate userCreate) {
        return ll.create_user(userCreate);
    }
}

UserServiceimpl–业务层

@Data
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
    public  User getid(String uid) {
        User user = getById(uid);
        return user;

    }

    public User create_user(UserCreate userCreate) {
        User user  = new User();
        user.setUid(userCreate.getUid());
        user.setName(userCreate.getName());
        user.setStatus(userCreate.getStatus());
        this.save(user);
        return user;
    }
}

启动类加入

@MapperScan(value = "com.example.demo.Mapper")    mapper注入

服务就通了