mybatis的驼峰映射

mybatis.configuration.mapUnderscoreToCamelCase=true
或
mybatis.configuration.map-underscore-to-camel-case=true

代码中配置

@Configuration
public class MyBatisConfig {

    @Bean
    public ConfigurationCustomizer configurationCustomizer() {
        return new ConfigurationCustomizer() {

            @Override
            public void customize(org.apache.ibatis.session.Configuration configuration) {
                configuration.setMapUnderscoreToCamelCase(true);
            }
        };
    }
}

作用：让实体类中字段自动和表中字段一一对应，如user表中的user_name和对应实体类中的userName