初接触vue的时候觉得vue好难,因为项目中要用到,就硬着头皮上,慢慢的发现也不难,无外乎画个布局,然后通过样式调整界面。在通过属性和方法跟js交互。js就和我们写的java代码差不多了,复杂一点的就是引用这种那种库,然后就能做出来一个界面了。如果你的项目就是和服务器交互,感觉用vue来做确实也蛮合适的。
在上手之前,我先说下我们要实现的场景。我们需要做一个注册登陆的功能,相关字段只有用户名密码昵称,注册之后就能登陆,相关的后端逻辑,我会在另外一篇文章提到,这里只需要关心前端逻辑,我们需要实现的功能有:
- 注册页面
- 登陆页面
- 注册后保存用户名密码到本地
- 登陆页面取本地用户名密码填充
- 点击按钮登录并根据返回跳转
- 国际化
Get Start
使用HbuildX创建一个Vue2的项目,什么模板都不选,就最基础的那种。创建完之后,参考一下我的目录结果,吧缺失的文件补一下:
本来要新创建一个vue页面的,我为了省事直接修改了index.vue,在里面添加了登陆界面,注册界面通过登陆界面的注册按钮打开。
我们先在pages.json
把页面名自定义一下,默认是uni-app,我们改成用户登录
。同时我添加了用户注册的页面,并在对应的位置创建了Vue文件。
{"pages": [ //pages数组中第一项表示应用启动页,参考:https://uniapp.dcloud.io/collocation/pages{"path": "pages/index/index","style": {"navigationBarTitleText": "用户登录"//修改标题为用户登录,标题颜色也可以像下面一样配置}},{"path": "pages/register/register","style": {"navigationBarTitleText": "用户注册"}}],"globalStyle": {"navigationBarTextStyle": "black","navigationBarTitleText": "登录Demo",// 通用标题"navigationBarBackgroundColor": "#F8F8F8","backgroundColor": "#F8F8F8"},"uniIdRouter": {}
}
引入网络请求库luch-request。这个类比较长这里就不贴出来了,大家可以去这里下载:
也可以按照她开发者文档上说的去配置,我是下过来使用的。我们来实现登陆界面:
<template><view class="container"><view class="left-bottom-sign"></view><view class="back-btn yticon icon-zuojiantou-up" @click="navBack"></view><view class="right-top-sign"></view><!-- 设置白色背景防止软键盘把下部绝对定位元素顶上来盖住输入框等 --><view class="wrapper"><view class="left-top-sign">{{$t('vue.public.login')}}</view><view class="welcome">{{$t('vue.public.welcomeback')}}</view><view class="input-content"><view class="input-item"><text class="tit">{{$t('vue.public.username')}}</text><input type="text" v-model="username" maxlength="11"/></view><view class="input-item"><text class="tit">{{$t('vue.public.pwd')}}</text><input type="text" v-model="password" placeholder-class="input-empty" maxlength="20"password @confirm="toLogin" /></view></view><button class="confirm-btn" @click="toLogin" :disabled="logining">{{$t('vue.public.tologin')}}</button><view class="forget-section" @click="toRegist">{{$t('vue.public.forgetpwd')}}</view></view><view class="register-section">{{$t('vue.public.notaccount')}}<text @click="toRegist">{{$t('vue.public.registernow')}}</text></view></view>
</template><script>import {mapMutations} from 'vuex';import {memberLogin,memberInfo} from '@/api/member.js';export default {data() {return {username: '',password: '',logining: false}},onLoad() {this.username = uni.getStorageSync('username') || '';this.password = uni.getStorageSync('password') || '';},methods: {...mapMutations(['login']),navBack() {uni.navigateBack();},toRegist() {uni.navigateTo({url:'/pages/public/register'});},async toLogin() {this.logining = true;memberLogin({username: this.username,password: this.password}).then(response => {let token = response.data.tokenHead+response.data.token;uni.setStorageSync('token',token);uni.setStorageSync('username',this.username);uni.setStorageSync('password',this.password);memberInfo().then(response=>{this.login(response.data);uni.navigateTo({url:'/pages/user/user'});});}).catch(() => {this.logining = false;});},},}
</script><style lang='scss'>page {background: #fff;}.container {padding-top: 115px;position: relative;width: 100vw;height: 100vh;overflow: hidden;background: #fff;}.wrapper {position: relative;z-index: 90;background: #fff;padding-bottom: 40upx;}.back-btn {position: absolute;left: 40upx;z-index: 9999;padding-top: var(--status-bar-height);top: 40upx;font-size: 40upx;color: $font-color-dark;}.left-top-sign {font-size: 120upx;color: $page-color-base;position: relative;left: -16upx;}.right-top-sign {position: absolute;top: 80upx;right: -30upx;z-index: 95;&:before,&:after {display: block;content: "";width: 400upx;height: 80upx;background: #b4f3e2;}&:before {transform: rotate(50deg);border-radius: 0 50px 0 0;}&:after {position: absolute;right: -198upx;top: 0;transform: rotate(-50deg);border-radius: 50px 0 0 0;/* background: pink; */}}.left-bottom-sign {position: absolute;left: -270upx;bottom: -320upx;border: 100upx solid #d0d1fd;border-radius: 50%;padding: 180upx;}.welcome {position: relative;left: 50upx;top: -90upx;font-size: 46upx;color: #555;text-shadow: 1px 0px 1px rgba(0, 0, 0, .3);}.input-content {padding: 0 60upx;}.input-item {display: flex;flex-direction: column;align-items: flex-start;justify-content: center;padding: 0 30upx;background: $page-color-light;height: 120upx;border-radius: 4px;margin-bottom: 50upx;&:last-child {margin-bottom: 0;}.tit {height: 50upx;line-height: 56upx;font-size: $font-sm+2upx;color: $font-color-base;}input {height: 60upx;font-size: $font-base + 2upx;color: $font-color-dark;width: 100%;}}.confirm-btn {width: 630upx;height: 76upx;line-height: 76upx;border-radius: 50px;margin-top: 70upx;background: $uni-color-primary;color: #fff;font-size: $font-lg;&:after {border-radius: 100px;}}.confirm-btn2 {width: 630upx;height: 76upx;line-height: 76upx;border-radius: 50px;margin-top: 40upx;background: $uni-color-primary;color: #fff;font-size: $font-lg;&:after {border-radius: 100px;}}.forget-section {font-size: $font-sm+2upx;color: $font-color-spec;text-align: center;margin-top: 40upx;}.register-section {position: absolute;left: 0;bottom: 50upx;width: 100%;font-size: $font-sm+2upx;color: $font-color-base;text-align: center;text {color: $font-color-spec;margin-left: 10upx;}}
</style>
接着我们在主js中引入我们添加的依赖,以便于全局生效。
main.js:
import Vue from 'vue'
import store from './store'
import App from './App'
import i18n from './locale'const msg = (title, duration=1500, mask=false, icon='none')=>{//统一提示方便全局修改if(Boolean(title) === false){return;}uni.showToast({title,duration,mask,icon});
}const prePage = ()=>{let pages = getCurrentPages();let prePage = pages[pages.length - 2];// #ifdef H5return prePage;// #endifreturn prePage.$vm;
}Vue.config.productionTip = false
Vue.prototype.$fire = new Vue();
Vue.prototype.$store = store;
Vue.prototype.$api = {msg, prePage};App.mpType = 'app'const app = new Vue({i18n,...App
})
app.$mount()
我们可以看到main.js引入了vuw的脚本,本地化的脚本(store/index.js)以及国际化脚本(locale/index.js)。Vue的脚本这里你可以要可以不要,我就写了一个界面的日志跟踪:
<script>export default {onLaunch: function() {console.log('App Launch')},onShow: function() {console.log('App Show')},onHide: function() {console.log('App Hide')}}
</script><style>/*每个页面公共css */
</style>
然后再store这里,通过mutations定义了两个常量方法,一个是登录,一个是登出,这两个方法通过调用vue的store管理方法来存储登陆状态和登录信息。mutations表示常量,类似java中的static。
import Vue from 'vue'
import Vuex from 'vuex'Vue.use(Vuex)const store = new Vuex.Store({state: {hasLogin: false,userInfo: {},},mutations: {login(state, provider) {state.hasLogin = true;state.userInfo = provider;uni.setStorage({//缓存用户登陆状态key: 'userInfo', data: provider }) console.log(state.userInfo);},logout(state) {state.hasLogin = false;state.userInfo = {};uni.removeStorage({ key: 'userInfo' });uni.removeStorage({key: 'token' })}},actions: {}
})export default store
然后我们把locale的内容也补充一下,因为再login.vue中引用到了国际化的字符串。当然了我们也可以再page中也进行国际化。vue官方支持国家话方案,可以参考这里。
locale/index.js:
import Vue from "vue";
import VueI18n from 'vue-i18n'
import en from './en.json'
import zh from './zh.json'
Vue.use(VueI18n); // 全局注册国际化包// 准备翻译的语言环境信息
const i18n = new VueI18n({locale: "zn", // 初始化中文messages: {"zn":zh,"en":en}
});
export default i18n
国际化的文案分别放在各个国家的json中,比如zh.json:
{"vue.public.login": "LOGIN","vue.public.welcomeback": "欢迎回来!","vue.public.welcomeregister": "欢迎注册!","vue.public.username": "用户名","vue.public.nickname": "昵称","vue.public.inputusername": "请输入用户名","vue.public.inputnickname": "请输入昵称","vue.public.pwd": "密码","vue.public.inputpwdhint": "8-18位不含特殊字符的数字、字母组合","vue.public.tologin": "登录","vue.public.alreadyRegister": "已有账号?","vue.public.loginnow": "前往登录","vue.public.toregister": "注册","vue.public.testlogin": "获取体验账号","vue.public.forgetpwd": "忘记密码?","vue.public.notaccount": "还没有账号?","vue.public.registernow": "马上注册"
}
英文的国家化和其他的国际化都是使用上述json格式,只不过冒号后面的值不一样而已。到这里界面已经写好了,虽然还不能做网络请求,至少我们可以看看效果了。再看效果之前,我们需要再项目的根目录打开终端,输入npm install
,也可以加上-t查看安装进度。然后可以使用npm run dev或者使用HbuildX提供的运行按钮来运行到内置浏览器或Chrome:
注册界面也写一下:
<template><view class="container"><view class="left-bottom-sign"></view><view class="back-btn yticon icon-zuojiantou-up" @click="navBack"></view><view class="right-top-sign"></view><!-- 设置白色背景防止软键盘把下部绝对定位元素顶上来盖住输入框等 --><view class="wrapper"><view class="left-top-sign">{{$t('vue.public.login')}}</view><view class="welcome">{{$t('vue.public.welcomeregister')}}</view><view class="input-content"><view class="input-item"><text class="tit">{{$t('vue.public.username')}}</text><input type="text" v-model="username" :placeholder="$t('vue.public.inputusername')" maxlength="11"/></view><view class="input-item"><text class="tit">{{$t('vue.public.nickname')}}</text><input type="text" v-model="nickname" :placeholder="$t('vue.public.inputnickname')" maxlength="11"/></view><view class="input-item"><text class="tit">{{$t('vue.public.pwd')}}</text><input type="text" v-model="password" :placeholder="$t('vue.public.inputpwdhint')" placeholder-class="input-empty" maxlength="20"password /></view></view><button class="confirm-btn" @click="toRegister" >{{$t('vue.public.toregister')}}</button></view><view class="register-section">{{$t('vue.public.alreadyRegister')}}<text @click="toLogin">{{$t('vue.public.loginnow')}}</text></view></view>
</template><script>import {mapMutations} from 'vuex';import {memberLogin,memberInfo, memberRegister} from '@/api/member.js';export default {data() {return {username: '',nickname: '',password: '',}},methods: {...mapMutations(['login']),navBack() {uni.navigateBack();},toLogin() {uni.navigateTo({url:'/pages/public/login'});},async toRegister() {memberRegister({username: this.username,nickname: this.nickname,password: this.password}).then(response => {//this.toLogin();console.log(response);if(response.code == 200){uni.showToast({title:'Register Success.',duration:1500});setTimeout(this.toLogin, 2000);}}).catch(() => {});},},}
</script><style lang='scss'>page {background: #fff;}.container {padding-top: 115px;position: relative;width: 100vw;height: 100vh;overflow: hidden;background: #fff;}.wrapper {position: relative;z-index: 90;background: #fff;padding-bottom: 40upx;}.back-btn {position: absolute;left: 40upx;z-index: 9999;padding-top: var(--status-bar-height);top: 40upx;font-size: 40upx;color: $font-color-dark;}.left-top-sign {font-size: 120upx;color: $page-color-base;position: relative;left: -16upx;}.right-top-sign {position: absolute;top: 80upx;right: -30upx;z-index: 95;&:before,&:after {display: block;content: "";width: 400upx;height: 80upx;background: #b4f3e2;}&:before {transform: rotate(50deg);border-radius: 0 50px 0 0;}&:after {position: absolute;right: -198upx;top: 0;transform: rotate(-50deg);border-radius: 50px 0 0 0;/* background: pink; */}}.left-bottom-sign {position: absolute;left: -270upx;bottom: -320upx;border: 100upx solid #d0d1fd;border-radius: 50%;padding: 180upx;}.welcome {position: relative;left: 50upx;top: -90upx;font-size: 46upx;color: #555;text-shadow: 1px 0px 1px rgba(0, 0, 0, .3);}.input-content {padding: 0 60upx;}.input-item {display: flex;flex-direction: column;align-items: flex-start;justify-content: center;padding: 0 30upx;background: $page-color-light;height: 120upx;border-radius: 4px;margin-bottom: 50upx;&:last-child {margin-bottom: 0;}.tit {height: 50upx;line-height: 56upx;font-size: $font-sm+2upx;color: $font-color-base;}input {height: 60upx;font-size: $font-base + 2upx;color: $font-color-dark;width: 100%;}}.confirm-btn {width: 630upx;height: 76upx;line-height: 76upx;border-radius: 50px;margin-top: 70upx;background: $uni-color-primary;color: #fff;font-size: $font-lg;&:after {border-radius: 100px;}}.confirm-btn2 {width: 630upx;height: 76upx;line-height: 76upx;border-radius: 50px;margin-top: 40upx;background: $uni-color-primary;color: #fff;font-size: $font-lg;&:after {border-radius: 100px;}}.forget-section {font-size: $font-sm+2upx;color: $font-color-spec;text-align: center;margin-top: 40upx;}.register-section {position: absolute;left: 0;bottom: 50upx;width: 100%;font-size: $font-sm+2upx;color: $font-color-base;text-align: center;text {color: $font-color-spec;margin-left: 10upx;}}
</style>
登陆页面和注册页面写好了,我们要来实现网络请求,在请求之前先做一个配置,主要是服务器和拦截器的设置,拦截器有利于我们跟踪代码运行,requestUtil.js:
import Request from '@/js_sdk/luch-request/request.js'
import i18n from "../locale";const http = new Request()http.setConfig((config) => { /* 设置全局配置 */config.baseUrl = 'http://127.0.0.1:8902' /* 根域名不同 */config.header = {...config.header}return config
})/*** 自定义验证器,如果返回true 则进入响应拦截器的响应成功函数(resolve),否则进入响应拦截器的响应错误函数(reject)* @param { Number } statusCode - 请求响应体statusCode(只读)* @return { Boolean } 如果为true,则 resolve, 否则 reject*/
http.validateStatus = (statusCode) => {return statusCode === 200
}http.interceptor.request((config, cancel) => { /* 请求之前拦截器 */const token = uni.getStorageSync('token');if(token){config.header = {'Authorization':token,...config.header}}else{config.header = {...config.header}}/*if (!token) { // 如果token不存在,调用cancel 会取消本次请求,但是该函数的catch() 仍会执行cancel('token 不存在') // 接收一个参数,会传给catch((err) => {}) err.errMsg === 'token 不存在'}*/return config
})http.interceptor.response((response) => { /* 请求之后拦截器 */const res = response.data;if (res.code !== 200) {//提示错误信息uni.showToast({title:res.message,duration:1500})//401未登录处理if (res.code === 401) {uni.showModal({title: i18n.t('vue.request.permit'), //'提示'content:i18n.t('vue.request.permithint'), //'你已被登出,可以取消继续留在该页面,或者重新登录',confirmText:i18n.t('vue.request.relogin'), //'重新登录',cancelText:i18n.t('vue.request.cancel'), //'取消',success: function(res) {if (res.confirm) {uni.navigateTo({url: '/pages/public/login'})} else if (res.cancel) {console.log('用户点击取消');}}});}return Promise.reject(response);} else {return response.data;}
}, (response) => {//提示错误信息console.log('response error', JSON.stringify(response));uni.showToast({title:response.errMsg,duration:1500})return Promise.reject(response);
})export function request (options = {}) {return http.request(options);
}export default request
上面的vue页面,我们再注册调用了注册方法memberRegister
,再登录调用了memberLogin
登陆方法。我们把这个功能实现下(api/member.js):
import request from '@/utils/requestUtil'export function memberLogin(data) {return request({method: 'POST',url: '/sso/login',header: {'content-type': 'application/x-www-form-urlencoded;charset=utf-8'},data: data})
}export function memberRegister(data) {return request({method: 'POST',url: '/sso/register',header: {'content-type': 'application/x-www-form-urlencoded;charset=utf-8'},data: data})
}export function memberInfo() {return request({method: 'GET',url: '/sso/info'})
}
到这里我们前端页面的注册登陆就写好了,你可以配合服务端来测试。