4-3 买家类目-service

DAO:ProductCategory。Service可以简化一些，叫CategoryService。

package com.imooc.sell.service;

import com.imooc.sell.dataobject.ProductCategory;

import java.util.List;

/**
 *  类目
 *  Created by zhongzh
 *  2018-05-26 23:53
 */
public interface CategoryService {
   ProductCategory findOne(Integer categoryId);//管理后台使用
   List<ProductCategory> findAll();//管理后台用的
   List<ProductCategory>  findByCategoryTypeInTest(List<Integer> categoryTypeList);
   //新增和更新都是save方法
    ProductCategory save(ProductCategory productCategory);
}

package com.imooc.sell.service.impl;

import com.imooc.sell.dataobject.ProductCategory;
import com.imooc.sell.repository.ProductCategoryRepository;
import com.imooc.sell.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 *  Created by zhongzh
 *  2018-05-27 0:02
 */

@Service //Service端要加一个注解
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private ProductCategoryRepository repository;//引入DAO

    @Override
    public ProductCategory findOne(Integer categoryId) {
        return repository.getOne(categoryId);
    }

    @Override
    public List<ProductCategory> findAll() {
        return repository.findAll();
    }

    @Override
    public List<ProductCategory> findByCategoryTypeInTest(List<Integer> categoryTypeList) {
        return repository.findByCategoryTypeIn(categoryTypeList);
    }

    @Override
    public ProductCategory save(ProductCategory productCategory) {
        return repository.save(productCategory);
    }
}

com.imooc.sell.service.impl.CategoryServiceImpl的四个方法都给它测试一下

测试类

package com.imooc.sell.service.impl;

import org.junit.Test;

import static org.junit.Assert.*;

public class CategoryServiceImplTest {

    @Test
    public void findOne() {
    }

    @Test
    public void findAll() {
    }

    @Test
    public void findByCategoryTypeInTest() {
    }

    @Test
    public void save() {
    }
}

增加注解

package com.imooc.sell.service.impl;

import com.imooc.sell.dataobject.ProductCategory;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import static org.junit.Assert.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class CategoryServiceImplTest {

    @Autowired
    private CategoryServiceImpl categoryService;

    @Test
    public void findOne() {
        ProductCategory productCategory = categoryService.findOne(1);
        Assert.assertEquals(new Integer(1),productCategory.getCategoryId());
    }

    @Test
    public void findAll() {
    }

    @Test
    public void findByCategoryTypeInTest() {
    }

    @Test
    public void save() {
    }
}

com.imooc.sell.dataobject.ProductCategory要增加一个getCategoryId()方法才行

package com.imooc.sell.dataobject;

//import javax.persistence.Table;

import lombok.Data;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import org.hibernate.annotations.DynamicUpdate;
import org.hibernate.annotations.Proxy;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import java.util.Date;

/**
 * 类目
 * Created by zhongzh
 * 2018-05-20 9:31
 * s_product_category
 */
//@Table(name = "s_product_category")
@Entity//把数据库映射成对象
@Proxy(lazy = false)
@DynamicUpdate //
@Data//@Data包含生成getter、setter和toString()方法
//@Getter//如果只是需要Getter那就引入Getter
//@Setter//如果只是需要Setter那就引入Setter
//@ToString//如果只是需要ToString那就引入ToString
public class ProductCategory{
     /** 类目id. */
     @Id//Id是主键,自增类型的。
     //@GeneratedValue//相当于调用了native策略
     //@GeneratedValue(strategy = GenerationType.AUTO)
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Integer categoryId;//字段名的命名方式也是一样的，把下划线改成为空。
     /** 类目名字. */
     private String categoryName;

     /** 类目编号. */
     private Integer categoryType;
     /** 创建时间. */
     private Date createTime;
     /** 修改时间. */
     private Date updateTime;
    //不要忘了Getter和Setter方法
    /*
    public Integer getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }

    public String getCategoryName() {
        return categoryName;
    }

    public void setCategoryName(String categoryName) {
        this.categoryName = categoryName;
    }

    public Integer getCategoryType() {
        return categoryType;
    }

    public void setCategoryType(Integer categoryType) {
        this.categoryType = categoryType;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }

    @Override
    public String toString() {
        return "ProductCategory{" +
                "categoryId=" + categoryId +
                ", categoryName='" + categoryName + '\'' +
                ", categoryType=" + categoryType +
                '}';
    }
    */

    public ProductCategory(String categoryName, Integer categoryType) {
        this.categoryName = categoryName;
        this.categoryType = categoryType;
    }

    public ProductCategory() {
        super();
    }

    public Integer getCategoryId() {
        return categoryId;
    }
}

package com.imooc.sell.service.impl;

import com.imooc.sell.dataobject.ProductCategory;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.Arrays;
import java.util.List;

import static org.junit.Assert.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class CategoryServiceImplTest {

    @Autowired
    private CategoryServiceImpl categoryService;

    @Test
    public void findOne() {
        ProductCategory productCategory = categoryService.findOne(10);
        Assert.assertEquals(new Integer(1),productCategory.getCategoryId());
    }

    @Test
    public void findAll() {
        List<ProductCategory> productCategoryList = categoryService.findAll();
        Assert.assertNotEquals(0,((List) productCategoryList).size());//如果集合的总数不等于null，如果productCategoryList的size不等于0，至少是有内容的。
    }

    @Test
    public void findByCategoryTypeInTest() {
        List<ProductCategory> productCategoryList = categoryService.findByCategoryTypeInTest(Arrays.asList(1,2,4));
        Assert.assertNotEquals(0,productCategoryList.size());
    }

    @Test
    public void save() {
        ProductCategory productCategory = new ProductCategory("男生专享",10);
        ProductCategory result = categoryService.save(productCategory);
        Assert.assertNotNull(result);
    }
}

---

因为类目并没有给买家端提供专门的接口，所以类目相关Controller层不用再写了。而是商品，下一节开发商品相关的功能。