Service层代码的编写

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Service层代码的编写

Service层学习总结： 1、在包下新增Service包 2、在包类添加CategoryService接口，在接口中添加需要用到的方法。 3、添加CategoryServiceImpl类，并实现CategoryService的方法，在类上添加注解@Service；注入repository. 4、测试类：在测试类中注入CategoryServiceImpl，写Service中的各个方法测试 //Service接口 package com.dairy.sell.service; import com.dairy.sell.dataobject.ProductCategory; import java.util.List; public interface CategoryService { ProductCategory findOne(Integer categoryId); List<ProductCategory> findAll(); List<ProductCategory> findByCategoryTypeIn(List<Integer> categoryTypeId); ProductCategory save(ProductCategory productCategory); } //Service层实现 package com.dairy.sell.service.impl; import com.dairy.sell.dataobject.ProductCategory; import com.dairy.sell.repository.ProductCategoryRepository; import com.dairy.sell.service.CategoryService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class CategoryServiceImpl implements CategoryService { @Autowired private ProductCategoryRepository productCategoryRepository; @Override public ProductCategory findOne(Integer categoryId) { return productCategoryRepository.findByCategoryId(categoryId); } @Override public List<ProductCategory> findAll() { return productCategoryRepository.findAll(); } @Override public List<ProductCategory> findByCategoryTypeIn(List<Integer> categoryTypeId) { return productCategoryRepository.findByCategoryTypeIn(categoryTypeId); } @Override public ProductCategory save(ProductCategory productCategory) { return productCategoryRepository.save(productCategory); } } //测试类 package com.dairy.sell.service.impl; import com.dairy.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.annotation.Rollback; import org.springframework.test.context.junit4.SpringRunner; import org.springframework.transaction.annotation.Transactional; import java.util.Arrays; import java.util.Date; 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(1); Assert.assertNotEquals(new Integer(2), productCategory.getCategoryId()); } @Test public void findAll() { List<ProductCategory> productCategory = categoryService.findAll(); Assert.assertNotEquals(0, productCategory.size()); } @Test public void findByCategoryTypeIn() { List<Integer> list = Arrays.asList(1, 2, 3, 4); List<ProductCategory> productCategory = categoryService.findByCategoryTypeIn(list); Assert.assertNotEquals(0, productCategory.size()); } @Test @Transactional @Rollback(true) public void save() { ProductCategory productCategory = new ProductCategory(new Date(), new Date(), "鞋子", new Integer(02)); ProductCategory productCategory1 = categoryService.save(productCategory); Assert.assertNotNull(productCategory1); } }

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