注意事项

添加依赖

    <!-- mybatis-plus-generator依赖（这里默认基于FreeMarker模板引擎） -->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-generator</artifactId>
        <version>3.5.1</version>
    </dependency>
            
    <dependency>
        <groupId>org.freemarker</groupId>
        <artifactId>freemarker</artifactId>
        <version>2.3.31</version>
    </dependency>

配置

注意改为mybatis-plus

    server.port=8081
    server.servlet.context-path=/
    spring.datasource.url=jdbc:mysql://localhost:3306/java5?characterEncoding=utf-8
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.username=root
    spring.datasource.password=root
    mybatis-plus.mapper-locations=classpath:mapper/*.xml
    mybatis-plus.type-aliases-package=com.neuedu.demo.domain
    logging.level.com.neuedu.demo.mapper=debug
    #mybatis-plus.configuration.map-underscore-to-camel-case=false

使用注意

１.queryWrapper.between(字段名, 1, 10);

queryWrapper.between("population_type", 1, 10);

2、queryWrapper.in(字段名, list)

           List list=new ArrayList();
    list.add("张三");
    list.add("李四");
    queryWrapper.in("house_holder", list);

3、queryWrapper.orderBy(是否进行排序, 正序/倒序,排序字段列表....)

            queryWrapper.orderBy(true, true,"population_type");
    queryWrapper.orderBy(true, false,"address");
             List<Population> resultList=mapper.selectList(queryWrapper);