校园商铺-7商品类别模块-3商品类别添加后端开发

1.Dao层

1.1 添加方法

package com.csj2018.o2o.dao;

import java.util.List;

import com.csj2018.o2o.entity.ProductCategory;

public interface ProductCategoryDao {
    /**
     * 查询某个店铺下的商品分类
     * @param shopId
     * @return
     */
    List<ProductCategory> queryProductCategoryList(long shopId);
    /**
     * 批量添加商品分类
     * @param productCategoryList
     * @return
     */
    int batchInsertProductCategory(List<ProductCategory> productCategoryList);
}

1.2.添加mapper方法

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.csj2018.o2o.dao.ProductCategoryDao">
    <select id="queryProductCategoryList" resultType="com.csj2018.o2o.entity.ProductCategory" parameterType="Long">
    SELECT 
    product_category_id,
    product_category_name,
    priority,
    create_time,
    shop_id 
    from tb_product_category
    where
    shop_id = #{shopId}
    order by priority desc
    </select>
    <!-- 7.3新增 -->
    <insert id="batchInsertProductCategory" parameterType="java.util.List">
        insert into 
        tb_product_category(product_category_name,priority,create_time,shop_id)
        values
        <foreach collection="list" item="productCategory" index="index" separator=",">
        (
            #{productCategory.productCategoryName},
            #{productCategory.priority},
            #{productCategory.createTime},
            #{productCategory.shopId}
        )
        </foreach>
    </insert>
 </mapper>

1.3.单元测试

package com.csj2018.o2o.dao;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.junit.Ignore;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

import com.csj2018.o2o.BaseTest;
import com.csj2018.o2o.entity.ProductCategory;

public class ProductCategoryDaoTest extends BaseTest {
    @Autowired
    private ProductCategoryDao productCategoryDao;
    @Test
    @Ignore
    public void testQueryByShopId() throws Exception {
        long shopId = 1;
        List<ProductCategory> productCategoryList = productCategoryDao.queryProductCategoryList(shopId);
        System.out.println("该店铺自定义商品类别数为："+productCategoryList.size());
    }
    @Test
    public void testBatchInsertProductCategory() {
        ProductCategory productCategory1 = new ProductCategory();
        productCategory1.setProductCategoryName("批量插入商品类别1");
        productCategory1.setPriority(1);
        productCategory1.setCreateTime(new Date());
        productCategory1.setShopId(1L);
        ProductCategory productCategory2 = new ProductCategory();
        productCategory2.setProductCategoryName("批量插入商品类别2");
        productCategory2.setPriority(2);
        productCategory2.setCreateTime(new Date());
        productCategory2.setShopId(1L);
        List<ProductCategory> productCategoryList = new ArrayList<ProductCategory>();
        productCategoryList.add(productCategory1);
        productCategoryList.add(productCategory2);
        int count = productCategoryDao.batchInsertProductCategory(productCategoryList);
        assertEquals(2,count);
    }
}

2.Service层

2.1Service层接口

package com.csj2018.o2o.service;

import java.util.List;

import com.csj2018.o2o.dto.ProductCategoryExecution;
import com.csj2018.o2o.entity.ProductCategory;
import com.csj2018.o2o.exceptions.ProductCategoryOperationException;

public interface ProductCategoryService {
    /**
     * 查询指定某个店铺下的所有商品类别信息
     * @param shopId
     * @return
     */
    List<ProductCategory> getProductCategoryList(long shopId);
    /** 7-3新增
     * 批量插入商品类别
     * @param productCategoryList
     * @return
     * @throws ProductCategoryOperationException
     */
    ProductCategoryExecution batchAddProductCategory(List<ProductCategory> productCategoryList) throws ProductCategoryOperationException;
}

2.2 创建接口中需要的店铺类别操作类

package com.csj2018.o2o.dto;

import java.util.List;

import com.csj2018.o2o.entity.ProductCategory;
import com.csj2018.o2o.enums.ProductCategoryStateEnum;

public class ProductCategoryExecution {
    //结果状态
    private int state;
    //状态标识
    private String stateInfo;
    
    private List<ProductCategory> productCategoryList;
    
    public ProductCategoryExecution() {};
    //操作失败的时候使用的构造器
    public ProductCategoryExecution(ProductCategoryStateEnum stateEnum) {
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
    }
    //操作成功时使用的构造器
    public ProductCategoryExecution(ProductCategoryStateEnum stateEnum,List<ProductCategory> productCategoryList) {
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
        this.productCategoryList = productCategoryList;
    }
    public int getState() {
        return state;
    }
    public void setState(int state) {
        this.state = state;
    }
    public String getStateInfo() {
        return stateInfo;
    }
    public void setStateInfo(String stateInfo) {
        this.stateInfo = stateInfo;
    }
    public List<ProductCategory> getProductCategoryList() {
        return productCategoryList;
    }
    public void setProductCategoryList(List<ProductCategory> productCategoryList) {
        this.productCategoryList = productCategoryList;
    }
}

2.3商品类别异常类

package com.csj2018.o2o.exceptions;

public class ProductCategoryOperationException extends RuntimeException{

    private static final long serialVersionUID = -4280159092691037667L;
    
    public ProductCategoryOperationException(String msg) {
        super(msg);
    }

}

2.4 Service实现类

package com.csj2018.o2o.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.csj2018.o2o.dao.ProductCategoryDao;
import com.csj2018.o2o.dto.ProductCategoryExecution;
import com.csj2018.o2o.entity.ProductCategory;
import com.csj2018.o2o.enums.ProductCategoryStateEnum;
import com.csj2018.o2o.exceptions.ProductCategoryOperationException;
import com.csj2018.o2o.service.ProductCategoryService;
@Service
public class ProductCategoryServiceImpl implements ProductCategoryService{
    @Autowired
    private ProductCategoryDao productCategoryDao;
    
    @Override
    public List<ProductCategory> getProductCategoryList(long shopId) {
        // TODO Auto-generated method stub
        return productCategoryDao.queryProductCategoryList(shopId);
    }
    //7.3增加
    @Override
    @Transactional
    public ProductCategoryExecution batchAddProductCategory(List<ProductCategory> productCategoryList)
            throws ProductCategoryOperationException {
        if(productCategoryList != null && productCategoryList.size() >0) {
            try {
                int effectedNum = productCategoryDao.batchInsertProductCategory(productCategoryList);
                if(effectedNum <= 0) {
                    throw new ProductCategoryOperationException("店铺类别创建失败"); 
                }else {
                    return new ProductCategoryExecution(ProductCategoryStateEnum.SUCCESS);
                }
            
            }catch (Exception e) {
                throw new ProductCategoryOperationException("batchAddProductCategory error:" + e.getMessage());
            }
        }else {
            return new ProductCategoryExecution(ProductCategoryStateEnum.EMPTY_LIST);
        }
    }
}

3.controller层

package com.csj2018.o2o.web.shopadmin;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.csj2018.o2o.dto.ProductCategoryExecution;
import com.csj2018.o2o.dto.Result;
import com.csj2018.o2o.entity.ProductCategory;
import com.csj2018.o2o.entity.Shop;
import com.csj2018.o2o.enums.ProductCategoryStateEnum;
import com.csj2018.o2o.exceptions.ProductCategoryOperationException;
import com.csj2018.o2o.service.ProductCategoryService;

@Controller
@RequestMapping("/shopadmin")
public class ProductCategoryManagementController {
    @Autowired
    private ProductCategoryService productCategoryService;
    @RequestMapping(value="/getproductcategorylist",method=RequestMethod.GET)
    @ResponseBody
    private Result<List<ProductCategory>> getProductCategoryList(HttpServletRequest request){
        //测试用，可删除
//      Shop shop = new Shop();
//      shop.setShopId(1L);
//      request.getSession().setAttribute("currentShop", shop);
        
        Shop currentShop = (Shop) request.getSession().getAttribute("currentShop");
        List<ProductCategory> list = null;
        if(currentShop.getShopId() != null && currentShop.getShopId()>0){
            list = productCategoryService.getProductCategoryList(currentShop.getShopId());
            return new Result<List<ProductCategory>>(true,list);
        }else {
            ProductCategoryStateEnum ps = ProductCategoryStateEnum.INNER_ERROR;
            return new Result<List<ProductCategory>>(false,ps.getState(),ps.getStateInfo());
        }   
    }
    //7-3新增
    @RequestMapping(value="/getproductcategorylist",method=RequestMethod.POST)
    @ResponseBody
    private Map<String,Object> addProductCategorys(@RequestBody List<ProductCategory> productCategoryList,HttpServletRequest request){
        Map<String,Object> modelMap = new HashMap<String,Object>();
        Shop currentShop = (Shop) request.getSession().getAttribute("currentShop");
        for(ProductCategory pc:productCategoryList) {
            pc.setShopId(currentShop.getShopId());
        }
        if(productCategoryList != null && productCategoryList.size()>0) {
            try {
                ProductCategoryExecution pe = productCategoryService.batchAddProductCategory(productCategoryList);
                if(pe.getState() == ProductCategoryStateEnum.SUCCESS.getState()) {
                    modelMap.put("success", true);
                }else {
                    modelMap.put("success", false);
                    modelMap.put("errMsg", pe.getStateInfo());
                }
            }catch (ProductCategoryOperationException e) {
                modelMap.put("success", false);
                modelMap.put("errMsg", e.toString());
            }
        }else {
            modelMap.put("success", false);
            modelMap.put("errMsg", "请输入至少一个商品类别");
        }
        return modelMap;
    }
}

5.前端

校园商铺-7商品类别模块-3商品类别添加后端开发

原文：https://www.cnblogs.com/csj2018/p/12435248.html