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springBoot快速整合MybatisPlus操作数据库

前行的跋涉者 2022-01-20 阅读 60

第一步:添加依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.atguigu</groupId>
    <artifactId>payment-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>payment-demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
<!--        前端交互-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--Swagger ui-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.7.0</version>
        </dependency>
        <!--Swagger ui-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.7.0</version>
        </dependency>

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
<!--        测试-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
<!--        连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.16</version>
        </dependency>
<!--        数据库建立连接-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.49</version>
        </dependency>
<!--        mybatisPlus启动器-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.1.0</version>
        </dependency>
    </dependencies>

第二步:配置.xml文件位置

 第三步:配置yaml文件

server:
  port: 10011
spring:
  application:
    name: payment-demo
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    password: root
    url: jdbc:mysql://localhost:3306/payment_demo?serverTimezone=GMT%2B8&characterEncoding=utf-8
    username: root

#格式化日期格式
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
mybatis-plus:
  mapper-locations: classpath:mapper/*.xml

第四步:自定义接口继承baseMapper接口

public interface OrderInfoMapper extends BaseMapper<OrderInfo> {

}

第五步:在启动类上加入mapperScan注解扫描mapper接口,在运行期生成实现类

@SpringBootApplication
@MapperScan("com.atguigu.paymentdemo.mapper")
public class PaymentDemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(PaymentDemoApplication.class, args);
    }

}
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