介绍 & lt; !——,引入mybatisPlus ——比;
,,& lt; dependency>
,,& lt; groupId> com.baomidou
,,& lt; artifactId> mybatis-plus-boot-starter
,,& lt; version> 3.2.0
& lt;才能/dependency>
& lt; !——,才能引入mysql驱动包,——比;
& lt;才能dependency>
,,& lt; groupId> mysql
,,& lt; artifactId> mysql-connector-java
,,& lt; version> 5.1.27
& lt;才能/dependency>
& lt; !——,才能引入德鲁伊依赖,阿里巴巴所提供的数据源,——比;
& lt;才能dependency>
,,& lt; groupId> com.alibaba
,,& lt; artifactId> druid
,,& lt; version> 1.0.29
& lt;/dependency> 春:
,数据源:
类型:大敌;com.alibaba.druid.pool.DruidDataSource
,driver-class-name: com.mysql.jdbc.Driver
,url: jdbc: mysql://127.0.0.1:3306/test& # 63; useUnicode=true& characterEncoding=utf - 8
,用户名:根
,密码:123456 @SpringBootApplication
@MapperScan (“com.qiao.demo02.mapper")
public class SpringbootDemo02Application {
,public static void main (String [], args), {
SpringApplication.run才能(SpringbootDemo02Application.class, args);
,}
} @ data
public class User {
,@TableId
,private Integer 标识;
,private String 用户名;
,private Integer userAge;
,private String userEmail;
} , public interface UserMapper extends BaseMapper, {
,
以前,} public interface BaseMapper, extends Mapper, {
,int 插入(T 实体);
,int deleteById (Serializable id);
,int deleteByMap (@Param (“cm"), Map<字符串,Object>, columnMap);
,int 删除(@Param (“ew"), Wrapper,包装);
,int deleteBatchIds (@Param (“coll"), Collection<及# 63;,extends Serializable>, idList);
,int updateById (@Param (““), T 实体);
,int 更新(@Param (““), T 实体,@Param (“ew"), Wrapper, updateWrapper);
,T selectById (Serializable id);
,List selectBatchIds (@Param (“coll"), Collection<及# 63;,extends Serializable>, idList);
,List selectByMap (@Param (“cm"), Map<字符串,Object>, columnMap);
,T selectOne (@Param (“ew"), Wrapper, queryWrapper);
,Integer selectCount (@Param (“ew"), Wrapper, queryWrapper);
,List selectList (@Param (“ew"), Wrapper, queryWrapper);
,List祝辞,selectMaps (@Param (“ew"), Wrapper, queryWrapper);
,List
今天就跟大家聊聊有关使用mybatis-plus如何实现分页查询功能,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
引入依赖:
在应用程序。yml配置
在启动类上面添加@MapperScan注解,扫描mapper包
新用户和建usermap
用户类
usermap接口
最重要的是继承BaseMapper
