注意两点
增加和修改都是用save方法来实现的在使用更新方法的时候，时间并没有自动更新，需要在ProductCategory类上加@DynamicUpdate注解，实现自动更新
另：在测试方法上加上@Transactional注解，在测试方法执行完之后，会自动回滚。
因为会回滚，那我么怎么知道是否成功了呢，我们可以加上断言Assert.assertNotNull(result);
如果result不为null,则通过，如果为null，则抛出异常。
ProductCategory
package com.lbl.dataObject;import lombok.Data;import org.hibernate.annotations.DynamicUpdate;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import java.util.Date;/*** 类目* Created by 李柏霖* -10-09 20：41* product_category*/@Entity@DynamicUpdate@Datapublic class ProductCategory {/** 类目id. */@Id@GeneratedValueprivate Integer categoryId;/** 类目名字. */private String categoryName;/** 类目编号. */private Integer categoryType;private Date createTime;private Date updateTime;public ProductCategory() {}public ProductCategory(String categoryName, Integer categoryType) {this.categoryName = categoryName;this.categoryType = categoryType;}}
ProductCategoryRepository
package com.lbl.repository;import com.lbl.dataObject.ProductCategory;import org.springframework.data.jpa.repository.JpaRepository;/*** Created by 李柏霖* -10-09 21:34*/public interface ProductCategoryRepository extends JpaRepository<ProductCategory, Integer> {}
ProductCategoryRepositoryTest
package com.lbl.repository;import com.lbl.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 org.springframework.transaction.annotation.Transactional;/*** Created by 李柏霖* -10-09 21:35*/@RunWith(SpringRunner.class)@SpringBootTestpublic class ProductCategoryRepositoryTest {@Autowiredprivate ProductCategoryRepository repository;@Testpublic void findOneTest() {ProductCategory productCategory = repository.findOne(1);System.out.println(productCategory.toString());}@Test@Transactionalpublic void addCategoryTest() {ProductCategory productCategory = new ProductCategory("女生最爱",2);ProductCategory result = repository.save(productCategory);Assert.assertNotNull(result);System.out.println(result.toString());}@Testpublic void updateCategoryTest() {ProductCategory productCategory = repository.findOne(2);productCategory.setCategoryType(10);ProductCategory save = repository.save(productCategory);System.out.println(save.toString());}@Testpublic void deleteCategoryTest() {repository.delete(3);}}
