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);