mybatis升级mybatis-plus

朴灿烈づ我的快乐病毒、 2022-01-12 08:05 337阅读 0赞

application.yml

server:
      port: 8080
      servlet:
    
    spring:
      thymeleaf:
        prefix: classpath:/templates/
        cache: false
      datasource:
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://127.0.0.1:3306/master?useUnicode=true&characterEncoding=UTF-8&characterSetResults=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false&serverTimezone=UTC
        username: root
        password: root
    
    
    
    #mybatis:
    #  mapper-locations: classpath*:mappers/system/*.xml
    #  type-aliases-package: com.xl.xinliao.system.entity
    mybatis-plus:
      mapper-locations: classpath*:mappers/system/*.xml
      type-aliases-package: com.xl.xinliao.system.entity
    
    
    #logging:
    #  config: classpath:xl-logback.xml
    #  path: logfys
    logging:
      level:
        root: warn
        com.xl.xinliao.system.dao: trace
      pattern:
        console: "%p%m%n"

pom.xml 升级mybatis-plus要先把先前的mybatis注释掉

<dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
    
            
            
    
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>3.1.1</version>
            </dependency>
            
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.14</version>
                <scope>provided</scope>
            </dependency>

启动类

@SpringBootApplication
    @MapperScan("com.xl.xinliao.system.dao")
    public class XinliaoApplication {
        public static void main(String[] args) {
            SpringApplication.run(XinliaoApplication.class, args);
            }
     }

spring boot项目结构和之前的spring mvc差不多  
也是![在这里插入图片描述][20190621151341497.png]  
@Controller  
@RequestMapping("/login")  
public class LoginController \{  
\}

public interface LoginMapper extends BaseMapper \{

mybatis-plus读数据库的时候下划线自动转成驼峰形式的。便于在页面显示

@Data  
@TableName(“login”)  
public class Login extends Model \{  
private static final long serialVersionUID = 1L;  
@TableId(value = “id”, type = IdType.AUTO)  
private long Id;//  
\}

public interface ILoginService extends IService \{\}

@Service  
public class LoginServiceImpl extends ServiceImpl<LoginMapper, Login> implements ILoginService \{\}

简单的分层

你们的观看是我前进的动力，这个是我最近从mybatis升级mybatis-plus的一些操作，其中也遇到很多毛病

多谢支持

[20190621151341497.png]: /images/20220109/824585e725df4d0aa05c56e1d72d3635.png