使用mybatis插件完成springboot的分页插件

好的，这里是使用Mybatis插件完成Spring Boot的分页插件的方法：

1. 首先，在pom.xml文件中添加Mybatis分页插件的依赖：

<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>1.2.13</version>
</dependency>

2. 接下来，在application.properties文件中添加Mybatis分页插件的配置：

# 开启分页插件
pagehelper.helperDialect=mysql
pagehelper.reasonable=true
pagehelper.supportMethodsArguments=true
pagehelper.params=count=countSql

3. 在Mapper.xml中编写SQL语句，并添加分页插件的配置：

<!-- 查询用户列表 -->
<select id="selectUsers" resultMap="userMap">
    select * from user
    <where>
        <if test="username != null and username != ''">
            and username like concat('%',#{username},'%')
        </if>
        <if test="email != null and email != ''">
            and email like concat('%',#{email},'%')
        </if>
    </where>
    <if test="sort != null and sort != ''">
        order by ${sort}
    </if>
    limit #{pageStart},#{pageSize}
</select>

<!-- 分页插件配置 -->
<select id="selectUsers" resultMap="userMap">
    select count(*) from user
    <where>
        <if test="username != null and username != ''">
            and username like concat('%',#{username},'%')
        </if>
        <if test="email != null and email != ''">
            and email like concat('%',#{email},'%')
        </if>
    </where>
</select>

4. 最后，在Service中调用Mapper方法进行分页查询：

@Service
public class UserService {

    @Autowired
    private UserMapper userMapper;

    public Page<User> selectUsers(String username, String email, String sort, int pageNum, int pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        List<User> users = userMapper.selectUsers(username, email, sort);
        PageInfo<User> pageInfo = new PageInfo<>(users);
        return PageConverter.convert(pageInfo);
    }
}

这样，就可以使用Mybatis插件完成Spring Boot的分页插件了。