空值报错！！！

@RunWith(SpringRunner.class)

@SpringBootTest

public class ShopCategoryServiceTest {

@Autowired

private ShopCategoryService shopCategoryService;

@Test

public void testGetShopCategoryList() {

List<ShopCategory> shopCategorys=null;

shopCategorys=shopCategoryService.getShopCategoryList(null);

shopCategorys.addAll(shopCategoryService.getShopCategoryList(new ShopCategory()));

System.out.println(shopCategorys.size());

System.out.println(shopCategorys.get(1).getParent().getShopCategoryId());

}

按照源码空值到后台页面就报错

收起

1回答

好帮手慕小班回答被采纳获得+3积分 2020-05-09 11:55:48

同学你好，报出的错误信息是什么呐，还麻烦同学将具体的报错信息贴出，便于老师定位问题。

如果我的回答解决了你的疑惑，请采纳，祝学习愉快~

慕桂英3475789 提问者 #1

function optFormater(value, row, index) { var shopCategoryId = row.shopCategoryId; var shopCategoryName = row.shopCategoryName; var shopCategoryDesc = row.shopCategoryDesc; var parentId=''; if(row.parent!=null&&row.parent.shopCategoryId!=null){ parentId = row.parent.shopCategoryId; } var priority=row.priority; var params = shopCategoryId + ",'" + shopCategoryName + "','" + shopCategoryDesc + "'," + parentId + "," + priority; var edit = '<a href="javascript:openDialog_edit(' + params + ')">编辑</a>'; //var del = '<a href="#" onclick="doDel(' + shopCategoryId + ')">删除</a>'; return edit; }; var parentId = row.parent.shopCategoryId;之前这个源码空值会报错的，我这个改不报了

2020-05-09 13:31:19