1.pom中引入依賴

<!--mybatis依賴-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.3</version>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.16</version>
</dependency>

<!--pagehelper-->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>1.4.1</version>
</dependency>

2.編寫工具類和pojo

@Data
@AllArgsConstructor
@NoArgsConstructor
public class PageRequest {
    /**
    *當前頁碼
    */
    private int pageNum;
    /**
     *每頁顯示條數
     */
    private int pageSize;

}

@Data
@AllArgsConstructor
@NoArgsConstructor
public class PageResult {
    /**
     *當前頁碼
     */
    private int pageNum;

    /**
     *每頁顯示條數
     */
    private int pageSize;

    /**
     *頁碼總數
     */
    private int totalPages;

    /**
     *記錄總數
     */
    private long totalSize;

    /**
     *返回資料模型
     */
    private List<?> content;

}

PageUtils:

public class PageUtils {

    public static PageResult getPageResult(PageRequest request, PageInfo<?> pageInfo){
        PageResult result = new PageResult();
        result.setPageNum(pageInfo.getPageNum());
        result.setPageSize(pageInfo.getPageSize());
        result.setTotalSize(pageInfo.getTotal());
        result.setTotalPages(pageInfo.getPages());
        result.setContent(pageInfo.getList());
        return result;
    }

}

實際中service層，controller層使用：

controller:

postman測試：