taro 引入dva框架

1、安装

    redux：

         cnpm install --save redux @tarojs/redux @tarojs/redux-h5 redux-thunk redux-logger

   dva：

         cnpm install --save dva-core dva-loading

       ps: dva-loading 与dva-core 是版本依赖的，如果安装dva-loading时出错，请按要求安装相应版本的dva-core, 如dva-core@1.6.0-beta.6 dva-loading@3.0.12

 

 

2、配置dva,  src/utils/dva.js

     

import Taro from '@tarojs/taro';
import { create } from 'dva-core';
// import { createLogger } from 'redux-logger';
import "@tarojs/async-await";
import createLoading from 'dva-loading';

let app;
let store;
let dispatch;

function createApp(opt) {
 // redux日志
 // opt.onAction = [createLogger()];
 app = create(opt);
 app.use(createLoading({}));

 // 适配支付宝小程序
 if (Taro.getEnv() === Taro.ENV_TYPE.ALIPAY) {
 global = {};
 }

 if (!global.registered) opt.models.forEach(model => app.model(model));
 global.registered = true;
 app.start();

 store = app._store;
 app.getStore = () => store;

 dispatch = store.dispatch;

 app.dispatch = dispatch;
 return app;
}

export default {
 createApp,
 getDispatch() {
 return app.dispatch;
 },
};

  

3、配置model，src/models/index.js

 

//配置dvaApp的models
import common from './common'

//各个page的models都需要在这里"注册"
export default [
 common
]

 

4、引入dva,  src/app.js

 

import Taro, { Component } from '@tarojs/taro'
import '@tarojs/async-await'
import { Provider } from "@tarojs/redux";
import dva from './utils/dva'
import models from './models';
import Index from './pages/home'
import './app.scss'
//引入 taro-ui
import 'taro-ui/dist/style/index.scss'
// 如果需要在 h5 环境中开启 React Devtools
// 取消以下注释：
// if (process.env.NODE_ENV !== 'production' && process.env.TARO_ENV === 'h5')  {
//   require('nerv-devtools')
// }
const dvaApp = dva.createApp({
 initialState: {},
 models: models,
});
const store = dvaApp.getStore();

class App extends Component {

 config = {
 pages: [
 'pages/home/index'
 ],
 window: {
 backgroundTextStyle: 'light',
 navigationBarBackgroundColor: '#fff',
 navigationBarTitleText: 'WeChat',
 navigationBarTextStyle: 'black'
 }
 }

 componentDidMount () {}
 componentDidShow () {}
 componentDidHide () {}
 componentDidCatchError () {}
 // 在 App 类中的 render() 函数没有实际作用
 // 请勿修改此函数
 render () {
 return (
 <Provider store={store}>
 <Index />
 </Provider>
 )
 }
}
Taro.render(<App />, document.getElementById('app'))

 

5、配置action ，utils/action.js

 

const action = (type, payload) => ({type, payload});

export default action

6、使用

 

     a、创建models，models/common.js

import action from "../utils/action";
import {request} from "../utils/request";

export default {
 namespace: 'common',
 state: {
 list: []
 },
 reducers: {
 save(state, {payload}) {
 return {...state, ...payload};
 },
 },
 effects: {
 * load({payload}, {call, put}) {
 console.log("common",payload)
 let data = yield call(request,payload);
 console.log("response",data)
 yield put(action("save", {list: data}))
 },
 },
};

 

    b、连接组件

import Taro, { Component } from '@tarojs/taro'
import { View, Text } from '@tarojs/components'
import { AtTabBar } from 'taro-ui'
import {connect} from '@tarojs/redux'
import action from '../../utils/action'

import './index.scss'

@connect(({common, loading}) => ({
 ...common,
 isLoad: loading.effects["common/load"],
}))
export default class Index extends Component {
 config = {
 navigationBarTitleText: '热榜'
 }
 constructor() {
 super(...arguments)
 this.state={
 current: 0,
 
 }
 }
 componentDidMount () {
 
 const{dispatch}=this.props
 dispatch(action("common/load",{
 "svr_name": "AdDeviceMngSvr",
 "method_name": "GetDeviceSearchList",
 "req_body": {
 "iUid": 1,
 "sToken": ''
 }
 }));
 }}

 c、发起请求

   

import Taro from '@tarojs/taro'
import '@tarojs/async-await'

export  function request(params) {
 const data = JSON.stringify(params)
 const method = 'post'
 const url = 'https://www.xxx.cn/comm_route'
 const opt={
 data:data,
 method:method,
 url:url
 }
 return Taro.request(opt).then((res) => {
 console.log("res",res)
 let {statusCode, data} = res;
 if (statusCode >= 200 && statusCode < 300) {
 return data;
 } else {
 throw new Error(`网络请求错误，状态码${statusCode}`);
 }
 })
}