pagehelper工具分页操作

pom.xml导入
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<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>${github.pagehelper.version}</version> (版本号)
</dependency>

page 页码
size 每页显示的数量

            PageHelper.startPage(page,size);
            List<TbGoodsInfoVo> list = 数据库查询的所有数据
            PageInfo<TbGoodsInfoVo> pageInfo = new PageInfo<>(list);

            Map<String, Object> map = new HashMap<>();
            map.put("total", pageInfo.getTotal());
            map.put("pageInfo", pageInfo);
            map.put("count", list.size());
            return new ContextDto('y',null,null,map);