arkTS开辟鸿蒙OS应用（登录页面实现，毗连数据库） - IT评测·应用市场-qidao123.com技术社区

import router from '@ohos.router'
@Component
export struct Header{
build(){
// 标题部分
Row({space:5}){
Image($r('app.media.fanhui'))
.width(20)
.onClick(() =>{
router.back()
})
Blank()
Image($r('app.media.shuaxin'))
.width(30)
}
.width('98%')
.height(30)
}
}

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import axios from '@ohos/axios'
import router from '@ohos.router'
@Entry
@Component
struct Index {
// 上传数据
@State zhanghao: string = ''
@State mima: string = ''
@State zhanghao_find:string =''
@State mima_find:string =''
build() {
Column() {
Text('龙年千帆启鸿蒙')
.margin({top:70})
.fontWeight(FontWeight.Bold)
.fontSize(30)
Image($r('app.media.icon'))
.width(150)
.margin({top:50,bottom:20})
// 账号登录
TextInput({placeholder:'账号'})
.margin(20)
.height(50)
.onChange(value =>{
console.log(value)
this.zhanghao_find = value
})
.backgroundColor('#36D2')
TextInput({placeholder:'密码'})
.margin({left:20,right:20,bottom:25})
.height(50)
.onChange(value =>{
console.log(value)
this.mima_find = value
})
.backgroundColor('#36D2')
Button('登录')
.width(200)
.onClick(()=>{
axios({
method: "get",
url: 'http://localhost:3000/find/'+this.zhanghao_find+ '/' + this.mima_find,
}).then(res => {
// console.info('result:' + JSON.stringify(res.data));
console.info('result:' + JSON.stringify(res.data));
router.pushUrl({
url: 'pages/NewApp_one',
})
}).catch(error => {
console.error(error);
})
})
Row(){
Text('注册')
.margin({right:5})
.onClick( () =>{
{
router.pushUrl({
url: 'pages/zhuce',
})
}
})
Text('|')
Text('忘记密码')
.margin({left:5})
.onClick( () =>{
{
router.pushUrl({
url: 'pages/WangjiMima',
})
}
})
}.margin(20)
}
.width('100%')
.height('100%')
}
}

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@Entry
@Component
struct NewApp_one {
@State message: string = 'app主页'
build() {
Row() {
Column() {
Text(this.message)
.fontSize(50)
.fontWeight(FontWeight.Bold)
}
.width('100%')
}
.height('100%')
}
}

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import { Header } from '../components/Toubu'
import axios from '@ohos/axios'
import router from '@ohos.router'
@Entry
@Component
struct Index {
// 上传数据
@State zhanghao: string = ''
@State mima: string = ''
build() {
Column() {
Header()
.margin(20)
TextInput({placeholder:'原账号'})
.margin(20)
.height(50)
.onChange(value =>{
console.log(value)
this.zhanghao = value
})
.backgroundColor('#36D2')
TextInput({placeholder:'新密码'})
.margin({ left:20,right:20,bottom:20 })
.height(50)
.onChange(value =>{
console.log(value)
this.mima = value
})
.backgroundColor('#36D2')
Button('修改密码')
.width(200)
.onClick(()=>{
axios({
method: "post",
url: 'http://localhost:3000/upd',
data:{
zhanghao:this.zhanghao,
newmima:this.mima
},
}).then(res => {
console.info('result:' + JSON.stringify(res.data));
{
router.pushUrl({
url: 'pages/NewApp_one',
})
}
}).catch(error => {
console.error(error);
})
})
}
.width('100%')
.height('100%')
}
}

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import { Header } from '../components/Toubu'
import axios from '@ohos/axios'
import router from '@ohos.router'
@Entry
@Component
struct Index {
// 上传数据
@State zhanghao: string = ''
@State mima: string = ''
@State zhanghao_find:string =''
@State mima_find:string =''
build() {
Column() {
Header()
.margin(20)
TextInput({placeholder:'注册账号'})
.margin(20)
.height(50)
.onChange(value =>{
console.log(value)
this.zhanghao = value
})
.backgroundColor('#36D2')
TextInput({placeholder:'注册密码'})
.margin({ left:20,right:20,bottom:20 })
.height(50)
.onChange(value =>{
console.log(value)
this.mima = value
})
.backgroundColor('#36D2')
Button('注册并登录')
.width(200)
.onClick(()=>{
axios({
method: "post",
url: 'http://localhost:3000/publish',
data:{
zhanghao:this.zhanghao,
mima:this.mima
},
}).then(res => {
console.info('result:' + JSON.stringify(res.data));
router.pushUrl({
url: 'pages/NewApp_one',
})
}).catch(error => {
console.error(error);
})
})
}
.width('100%')
.height('100%')
}
}

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const express = require('express');
const app = express();
const { users } = require('./db');
app.use(express.urlencoded({ extended: true }));
app.use(express.json())
// 注册账号
app.post("/publish", async (req, res) => {
try {
const { zhanghao, mima } = req.body;
await users.create({
zhanghao, mima
});
res.send("success")
} catch (error) {
res.send(error, "error")
}
})
// 注销账号
app.post("/del", async (req, res) => {
console.log(req.body.zhanghao)
try {
const { zhanghao } = req.body;
// 使用 deleteOne 删除指定 name 的数据
const result = await users.deleteOne({ zhanghao });
if (result.deletedCount === 1) {
res.send("success");
} else {
res.send("未找到匹配的记录");
}
} catch (error) {
res.send(error, "error");
}
})
// 修改账号密码
app.post("/upd", async (req, res) => {
try {
const { zhanghao, newmima } = req.body;
// 使用 updateOne 更新指定 name 的数据记录的 nianling 字段
const result = await users.updateOne({ zhanghao }, { $set: { mima: newmima } });
res.json({ message: "密码更新成功！", result });
} catch (error) {
res.status(500).json({ error: error.message });
}
});
// 账号登录
app.get("/find/:zhanghao/:mima", async (req, res) => {
try {
const zhanghao = req.params.zhanghao;
const mima = req.params.mima;
// 使用 find 查询所有匹配指定 name 的数据记录
const results = await users.find({ zhanghao, mima });
if (results.length > 0) {
// 如果找到匹配的记录，则返回所有匹配的记录
res.json({ data: results, message: "登录成功！" });
} else {
res.status(404).json({ message: "未找到匹配的记录" });
}
} catch (error) {
res.status(500).json({ message: "服务器内部错误" });
}
});
app.listen(3000, () => {
console.log('server running')
})

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