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;
    }
}