mybatis plus环境搭建

• pom.xml

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>2.6.5</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <version>2.6.5</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.4.2</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.28</version>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.22</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>5.1.11</version>
</dependency>

• application.yml

server:
  port: 80    # 端口
spring:
  application:
    name: demo    # 项目名
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf-8&useSSL=false    # 数据源
  main:
    allow-circular-references: true    # 循环依赖
  devtools:
    restart:
      enabled: true    # 热部署
 
logging:    # 日志
  level:
    com:
      ychen:
        mybatis: debug
 
mybatis:
  configuration:
    map-underscore-to-camel-case: true    # 驼峰命名
mybatis-plus:
  mapper-locations: classpath:mapper/*.xml    # 扫描映射文件

• 启动类

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

• 配置类

@Configuration
@MapperScan("com.ychen.mybatis.mapper")
public class MybatisPlusConfig {
 
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        PaginationInnerInterceptor paginationInnerInterceptor = new PaginationInnerInterceptor();
        paginationInnerInterceptor.setDbType(DbType.MYSQL);
        paginationInnerInterceptor.setOverflow(true);
        interceptor.addInnerInterceptor(paginationInnerInterceptor);
        return interceptor;
    }
 
    @Bean
    public ConfigurationCustomizer configurationCustomizer() {
        return configuration -> configuration.setUseDeprecatedExecutor(false);
    }
 
    @Bean
    public PageInterceptor pageInterceptor() {
        return new PageInterceptor();
    }
 
}