作者：坚果 公众号："大前端之旅" 华为云享专家，InfoQ签约作者，OpenHarmony布道师，CSDN博客专家，电子发烧友鸿蒙MVP，阿里云专家博主，51CTO博客首席体验官，开源项目GVA成员之一，专注于大前端技术的分享，包括Flutter,小程序,安卓，VUE，JavaScript。
基于ArkUI eTS开发的坚果新闻（NutNews）
基于ArkUI eTS开发的坚果笑话（NutJoke）
鸿蒙eTS版《坚果天气》
推荐一个鸿蒙即时通讯软件《果聊》，有点屌呢！！
鸿蒙藏头诗应用【利用AI为应用赋能】
鸿蒙智能家居【1.0】
鸿蒙智联汽车【1.0】
OpenHarmony应用开发之二维码生成器
今天为大家做一款坚果食谱，有大量的食谱数据，覆盖了很多种类的食谱。
实现的功能：
- 获取接口数据
- 菜谱列表
- 菜谱详情页
你能学到的有：
- 网络请求
- 可滚动组件
- 容器组件
- 路由跳转
- 基础组件
文件结构
代码语言：javascript复制.
├── config.json
├── ets
│ └── MainAbility
│ ├── app.ets
│ ├── data
│ │ ├── get_cook_data.ets
│ │ └── get_test.ets
│ ├── model
│ │ ├── cookDetailModel.ets
│ │ ├── cookModel.ets
│ │ ├── materialModel.ets
│ │ └── processModel.ets
│ └── pages
│ ├── Main.ets
│ ├── cookbookDetails.ets
│ └── index.ets
└── resources
├── base
│ ├── element
│ │ ├── color.json
│ │ └── string.json
│ └── media
│ └── icon.png
└── rawfile
效果预览：
image-20220724104951823
获取新闻接口a
标识：get
- 接口地址： https://way.jd.com/jisuapi/search
- 请求方式： HTTPS GET POST
- 请求示例：
Url:https://way.jd.com/jisuapi/search?keyword=白菜&num=10&start=0&appkey=7c913be32b690701cd994d804a6d4294
请求参数说明：
image-20220724105047682
返回参数说明：
image-20220724105034435
image-20220724105104455
JSON返回示例
代码语言：javascript复制{"code":"10000","charge":false,"msg":"查询成功","result":{
"status": "0",
"msg": "ok",
"result": {
"num": "10",
"list": [
{
"id": "8",
"classid": "2",
"name": "醋溜白菜",
"peoplenum": "1-2人",
"preparetime": "10-20分钟",
"cookingtime": "10-20分钟",
"content": "醋溜白菜，是北方人经常吃的一道菜，尤其是在多年前的冬天。那时，没有大棚菜，冬天，家家每天佐餐的基本上都是冬储大白菜，聪明的家庭主妇总是想方设法将这单调的菜变成多种菜式，于是，醋溜白菜被频繁的端上餐桌。
美食不分贵贱，用最平凡的原料、最简单的调料和最普通的手法做出美味的菜肴来才是美食的真谛。
这次，我做的醋溜白菜，近似鲁菜的做法，使个这道菜酸甜浓郁、开胃下饭、老少咸宜。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/115138_46688.jpg",
"tag": "减肥,家常菜,排毒,补钙",
"material": [
{
"mname": "油",
"type": "0",
"amount": "适量"
},
{
"mname": "盐",
"type": "0",
"amount": "适量"
},
{
"mname": "花椒",
"type": "0",
"amount": "适量"
},
{
"mname": "干红椒",
"type": "0",
"amount": "适量"
},
{
"mname": "葱",
"type": "0",
"amount": "适量"
},
{
"mname": "姜",
"type": "0",
"amount": "适量"
},
{
"mname": "蒜",
"type": "0",
"amount": "适量"
},
{
"mname": "醋",
"type": "0",
"amount": "适量"
},
{
"mname": "酱油",
"type": "0",
"amount": "适量"
},
{
"mname": "糖",
"type": "0",
"amount": "适量"
},
{
"mname": "淀粉",
"type": "0",
"amount": "适量"
},
{
"mname": "白菜",
"type": "1",
"amount": "380g"
}
],
"process": [
{
"pcontent": "准备食材。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162550_84583.jpg"
},
{
"pcontent": "将白菜斜刀片成薄片。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162551_90620.jpg"
},
{
"pcontent": "片切好的白菜帮与菜叶分别入好。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162551_20925.jpg"
},
{
"pcontent": "盐、糖、生抽、醋淀粉加少许水调匀备用。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162552_23125.jpg"
},
{
"pcontent": "锅中油烧热，先入花椒炒香后捞出。再加入干红椒段略炒。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162552_57046.jpg"
},
{
"pcontent": "加入葱姜蒜煸炒香，然后入白菜帮翻炒。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162553_89090.jpg"
},
{
"pcontent": "炒至菜帮变软时，加入白菜叶。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162553_40445.jpg"
},
{
"pcontent": "快速翻炒至菜软，勾入碗汁",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162554_92210.jpg"
},
{
"pcontent": "使汤汁均匀的包裹在菜帮上即可",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162554_29522.jpg"
}
]
}
]
}
}}
接下来，我们开始今天的实战，首先创建一个项目NutJoke
image-20220722080412586
点击下一步
image-20220724095142561
因为我们要网络请求
所以我们需要在config.json中配置网络请求权限
网络请求的步骤
1、声明网络请求权限
在entry下的config.json中module字段下配置权限
代码语言：javascript复制"reqPermissions": [
{
"name": "ohos.permission.INTERNET"
}
]
2、支持http明文请求
默认支持https，如果要支持http，在entry下的config.json中deviceConfig字段下配置
代码语言：javascript复制 "deviceConfig": {"default": {
"network": {
"cleartextTraffic": true
}
}},
3、创建HttpRequest
代码语言：javascript复制// 导入模块
import http from '@ohos.net.http';
// 创建HttpRequest对象
let httpRequest = http.createHttp();
4、发起请求
GET请求（默认为GET请求）
代码语言：javascript复制 // 请求方式：GET
getRequest() {
// 每一个httpRequest对应一个http请求任务，不可复用
let httpRequest = http.createHttp()
let url = "https://way.jd.com/jisuapi/search?keyword=白菜&num=10&start=0&appkey=7c913be32b690701cd994d804a6d4294"
httpRequest.request(url, (err, data) => {
if (!err) {
if (data.responseCode == 200) {
console.info('=====data.result=====' data.result)
// 解析数据
//this.content= data.result;
// 解析数据
var cookModel: CookModel = JSON.parse(data.result.toString())
// 判断接口返回码，0成功
if (cookModel.code == 1000) {
// 设置数据
this.future = cookModel.result.result.list.material
this.cookdetail = cookModel.result.result.list
this.isRequestSucceed = true;
console.info('=====data.result===this.content==' cookModel.result.result.list.material)
} else {
// 接口异常，弹出提示
prompt.showToast({ message: "数据请求失败" })
prompt.showToast({ message: jokeModel.error_code })
}
} else {
// 请求失败，弹出提示
prompt.showToast({ message: '网络异常' })
}
} else {
// 请求失败，弹出提示
prompt.showToast({ message: err.message })
}
})
}
5、解析数据（简单示例）
1.网络请求到的json字符串
代码语言：javascript复制/*
* Copyright (c) 2021 JianGuo Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
export function getCookTest() {
return {
"id": "8",
"classid": "2",
"name": "醋溜白菜",
"peoplenum": "1-2人",
"preparetime": "10-20分钟",
"cookingtime": "10-20分钟",
"content": "醋溜白菜，是北方人经常吃的一道菜，尤其是在多年前的冬天。那时，没有大棚菜，冬天，家家每天佐餐的基本上都是冬储大白菜，聪明的家庭主妇总是想方设法将这单调的菜变成多种菜式，于是，醋溜白菜被频繁的端上餐桌。"
" 美食不分贵贱，用最平凡的原料、最简单的调料和最普通的手法做出美味的菜肴来才是美食的真谛。"
" 这次，我做的醋溜白菜，近似鲁菜的做法，使个这道菜酸甜浓郁、开胃下饭、老少咸宜。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/115138_46688.jpg",
"tag": "减肥,家常菜,排毒,补钙",
"material": [
{
"mname": "油",
"type": "0",
"amount": "适量"
},
{
"mname": "盐",
"type": "0",
"amount": "适量"
},
{
"mname": "花椒",
"type": "0",
"amount": "适量"
},
{
"mname": "干红椒",
"type": "0",
"amount": "适量"
},
{
"mname": "葱",
"type": "0",
"amount": "适量"
},
{
"mname": "姜",
"type": "0",
"amount": "适量"
},
{
"mname": "蒜",
"type": "0",
"amount": "适量"
},
{
"mname": "醋",
"type": "0",
"amount": "适量"
},
{
"mname": "酱油",
"type": "0",
"amount": "适量"
},
{
"mname": "糖",
"type": "0",
"amount": "适量"
},
{
"mname": "淀粉",
"type": "0",
"amount": "适量"
},
{
"mname": "白菜",
"type": "1",
"amount": "380g"
}
],
"process": [
{
"pcontent": "准备食材。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162550_84583.jpg"
},
{
"pcontent": "将白菜斜刀片成薄片。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162551_90620.jpg"
},
{
"pcontent": "片切好的白菜帮与菜叶分别入好。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162551_20925.jpg"
},
{
"pcontent": "盐、糖、生抽、醋淀粉加少许水调匀备用。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162552_23125.jpg"
},
{
"pcontent": "锅中油烧热，先入花椒炒香后捞出。再加入干红椒段略炒。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162552_57046.jpg"
},
{
"pcontent": "加入葱姜蒜煸炒香，然后入白菜帮翻炒。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162553_89090.jpg"
},
{
"pcontent": "炒至菜帮变软时，加入白菜叶。",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162553_40445.jpg"
},
{
"pcontent": "快速翻炒至菜软，勾入碗汁",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162554_92210.jpg"
},
{
"pcontent": "使汤汁均匀的包裹在菜帮上即可",
"pic": "http://api.jisuapi.com/recipe/upload/20160719/162554_29522.jpg"
}
]
}
}
2.创建相应的对象
代码语言：javascript复制/*
* Copyright (c) 2021 JianGuo Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { CookDetailData } from './cookDetailModel';
export class CookModel {
charge: string //返回说明
code: number //返回码，1000为查询成功
msg: string //
result: {
result: CookModel7 // 笑话
status: number //数量
msg: string // ok
}
}
export class CookModel7 {
num: string //频道
list: CookDetailData //
}
/*
* Copyright (c) 2021 JianGuo Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { MaterialData } from './materialModel';
import { ProcessData } from './processModel';
export class CookDetailData {
name: string //
peoplenum: string //
cookingtime: string //
content: string //
pic: string //
tag: string //
material: Array<MaterialData>
process: Array<ProcessData>
}
参考文档
- Text
- 尺寸设置
- 边框设置
- RichText
- Web
项目地址
https://gitee.com/jianguo888/nut-recipes
