電商專案之實現商品分頁(重點)
阿新 • • 發佈:2019-01-06
1、controller層
iProductService.getProductList(pageNum,pageSize);
2、service層
ServerResponse<PageInfo> getProductList(int pageNum, int pageSize);
3、service實現層
public ServerResponse<PageInfo> getProductList(int pageNum,int pageSize){ //這裡使用mybatis的pagehelper //1、startPage--start //2、填充自己的sql查詢邏輯 //3、pageHelper收尾 PageHelper.startPage(pageNum,pageSize); List<Product> productList=productMapper.selectList(); List<ProductListVo> productListVoList=Lists.newArrayList(); for (Product productItem:productList){ ProductListVo productListVo=assembleProductListVo(productItem); productListVoList.add(productListVo); } PageInfo pageResult=new PageInfo(productList); pageResult.setList(productListVoList); return ServerResponse.createBySuccess(pageResult); } private ProductListVo assembleProductListVo(Product product){ ProductListVo productListVo=new ProductListVo(); productListVo.setId(product.getId()); productListVo.setName(product.getName()); productListVo.setCategoryId(product.getCategoryId()); productListVo.setImageHost(PropertiesUtil.getProperty("ftp.server.http.prefix","http://img.mall.com/")); productListVo.setMainImage(product.getMainImage()); productListVo.setPrice(product.getPrice()); productListVo.setSubtitle(product.getSubtitle()); productListVo.setStatus(product.getStatus()); return productListVo; }
dao層
List<Product> selectList();
dao層(mapper)實現
<select id="selectList" resultMap="BaseResultMap" >
select
<include refid="Base_Column_List"></include>
from mmall_product
order by id asc
</select>
vo層
package com.lpy.mall.vo; import java.math.BigDecimal; public class ProductListVo { private Integer id; private Integer categoryId; private String name; private String subtitle; private String mainImage; private BigDecimal price; private Integer status; private String imageHost; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getCategoryId() { return categoryId; } public void setCategoryId(Integer categoryId) { this.categoryId = categoryId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSubtitle() { return subtitle; } public void setSubtitle(String subtitle) { this.subtitle = subtitle; } public String getMainImage() { return mainImage; } public void setMainImage(String mainImage) { this.mainImage = mainImage; } public BigDecimal getPrice() { return price; } public void setPrice(BigDecimal price) { this.price = price; } public Integer getStatus() { return status; } public void setStatus(Integer status) { this.status = status; } public String getImageHost() { return imageHost; } public void setImageHost(String imageHost) { this.imageHost = imageHost; } }