springboot从零开始整合mybatis

野性酷女 2022-03-28 12:42 245阅读 0赞

涉及pom

<dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.44</version>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.1</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-core</artifactId>
                <version>1.3.5</version>
            </dependency>

准备工作generator逆向工程  
1.这里不重复制造轮子  
第一种通用的方法：  
[https://blog.csdn.net/qq\_31151929/article/details/50961792][https_blog.csdn.net_qq_31151929_article_details_50961792]  
第二种 idea maven插件：  
[https://jingyan.baidu.com/article/6b97984de981431ca2b0bfd4.html][https_jingyan.baidu.com_article_6b97984de981431ca2b0bfd4.html]  
2.生成好了逆向工程之后，开始整合

## 该配置节点为独立的节点，有很多同学容易将这个配置放在spring的节点下，导致配置无法被识别
    mybatis:
      mapper-locations: classpath:mapping/*.xml  #注意：一定要对应mapper映射xml文件的所在路径
      type-aliases-package: com.winter.model  # 注意：对应实体类的路径
      spring.datasource.driverClassName = com.mysql.jdbc.Driver
    spring.datasource.url = jdbc:mysql://localhost:3306/crm?useUnicode=true&characterEncoding=utf-8
    spring.datasource.username = root
    spring.datasource.password =

3.在springboot main方法类上添加注解@MapperScan(“com.springboot.study.mysql.dao”)这个注解非常的关键，这个对应了项目中mapper（dao）所对应的包路径

@SpringBootApplication
    @MapperScan("com.springboot.study.mysql.dao")
    public class StudyApplication {
        public static void main(String[] args) {
            SpringApplication.run(StudyApplication.class, args);
        }
    }

[https_blog.csdn.net_qq_31151929_article_details_50961792]: https://blog.csdn.net/qq_31151929/article/details/50961792
[https_jingyan.baidu.com_article_6b97984de981431ca2b0bfd4.html]: https://jingyan.baidu.com/article/6b97984de981431ca2b0bfd4.html