{"id":1067,"date":"2023-03-12T10:23:47","date_gmt":"2023-03-12T02:23:47","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1067"},"modified":"2023-04-29T11:46:13","modified_gmt":"2023-04-29T03:46:13","slug":"getting-started-with-react-dva","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/12\/getting-started-with-react-dva\/","title":{"rendered":"React Dva\u5165\u95e8"},"content":{"rendered":"

create-react-app\u521b\u5efa\u5de5\u7a0b\u53ea\u80fd\u521b\u5efa\u4e00\u4e2a\u6700\u57fa\u672c\u7684\u7a7a\u7a0b\u5e8f\u3002\u9700\u8981\u624b\u52a8\u5b89\u88c5\u5f88\u591a\u4f9d\u8d56\u5305\u53ca\u4ee3\u7801\u64cd\u4f5c\u3002Dva\u5c06\u4e00\u5207\u8fdb\u884c\u4e86\u7b80\u5316\uff0c\u5b83\u662f\u4e00\u4e2a\u5c01\u88c5\u597d\u5f88\u591a\u6a21\u5757\u7684\u6846\u67b6\uff0c\u5e76\u4e14\u62e5\u6709\u81ea\u5df1\u7684\u811a\u624b\u67b6\u3002\u7528Dva\u521b\u5efa\u7684\u5de5\u7a0b\uff0c\u4ece\u76ee\u5f55\u7ed3\u6784\u8d77\u5c31\u975e\u5e38\u6e05\u6670\u3002<\/p>\n

\u521b\u5efaDva\u9879\u76ee<\/h2>\n

<\/p>\n

\u5168\u5c40\u5b89\u88c5Dva\u811a\u624b\u67b6<\/p>\n

> npm install dva-cli -g<\/code><\/pre>\n
\u4f7f\u7528dva -v<\/code>\u53ef\u4ee5\u67e5\u770b\u7248\u672c\u53f7<\/p>\n
> dva -v\ndva-cli version 0.10.1<\/code><\/pre>\n
\u4e0ecreate-react-app<\/code>\u4e00\u6837\uff0c\u4f7f\u7528dva\u5728\u547d\u4ee4\u884c\u521b\u5efaapp<\/p>\n
dva new dva-app<\/code><\/pre>\n
\u5176\u540e\u8fdb\u5165\u5de5\u7a0b\u6587\u4ef6\u5e76\u542f\u52a8\u5de5\u7a0b<\/p>\n
cd dva-app\nnpm start<\/code><\/pre>\n
\u76ee\u5f55\u7ed3\u6784<\/h2>\n
\u9664\u4e86index.js\u7684\u5165\u53e3\u6587\u4ef6\uff0c\u548crouter.js\u7684\u521d\u59cb\u8def\u7531\uff0cDva\u5de5\u7a0b\u7684\u76ee\u5f55\u7ed3\u6784\u5927\u81f4\u610f\u4e49\u5982\u4e0b\uff1a<\/p>\n
asserts<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u9759\u6001\u8d44\u6e90
\ncomponents<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u516c\u5171\u7ec4\u4ef6\uff0c\u6bd4\u5982\u9875\u9762\u5934\u5c3e\u5bfc\u822a\u6761
\nroutes<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u8def\u7531\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u901a\u4fd7\u7684\u7406\u89e3\u6210\u9875\u9762\u3002\u4e0ecomponent\u7684\u533a\u522b\u5728\u4e8e\u4e00\u822c\u662f\u975e\u516c\u5171\u7684\u5e76\u4e14\u4f1a\u8ddfmodel\u91cc\u7684\u6570\u636e\u6a21\u578b\u8054\u7cfb\u8d77\u6765
\nmodels<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u6a21\u578b\u6587\u4ef6\uff08\u4e2a\u4eba\u8ba4\u4e3amodel\u624d\u662freact-redux\u4f53\u7cfb\u91cc\u6700\u91cd\u8981\u7684\u90e8\u5206\uff09\uff0c\u6211\u4eec\u4e4b\u524d\u8bf4\u7684state\u4ee5\u53careducer\u90fd\u4f1a\u5199\u5728\u91cc\u9762\uff0c\u540c\u65f6\uff0c\u901a\u8fc7connect\u8ddfroutes\u91cc\u9762\u7684\u7ec4\u4ef6\u8fdb\u884c\u7ed1\u5b9a\u3002routes\u4e2d\u7684\u7ec4\u4ef6\u901a\u8fc7connect\u62ff\u5230model\u4e2d\u7684\u6570\u636e\uff0cmodel\u4e5f\u80fd\u901a\u8fc7connect\u63a5\u6536\u5230\u7ec4\u4ef6\u4e2ddispatch\u7684action
\nservices<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u8ddf\u540e\u53f0\u4ea4\u4e92\u7684\u670d\u52a1\u6587\u4ef6\uff0c\u4e00\u822c\u90fd\u9700\u8981\u8c03\u7528\u540e\u53f0\u7684\u63a5\u53e3
\nutils<\/code>\uff1a\u7528\u4e8e\u5b58\u653e\u5de5\u5177\u7c7b\u5e93<\/p>\n
\u6574\u4f53\u7684\u6d41\u7a0b\u5927\u81f4\uff08\u6570\u636e\u6d41\u5411\uff09\u662f\uff1a<\/p>\n
\u4eceindex\u5165\u53e3\u8fdb\u5165 => \u901a\u8fc7url\u5339\u914droutes\u91cc\u7684\u7ec4\u4ef6\uff08\u987a\u4fbf\u770b\u770bcomponents\u91cc\u6709\u6ca1\u6709\u5565\u516c\u5171\u7ec4\u4ef6\u9700\u8981\u52a0\u8f7d\uff09 => routes\u91cc\u7684\u7ec4\u4ef6dispatch action => model\u901a\u8fc7action\u6539\u53d8state\uff08\u4e2d\u9014\u53ef\u80fd\u4f1a\u901a\u8fc7services\u8ddf\u540e\u53f0\u4ea4\u4e92\uff09 => \u901a\u8fc7connect\u91cd\u65b0\u6e32\u67d3routes\u4e2d\u7684\u7ec4\u4ef6<\/p>\n
\"Dva\u57fa\u672c\u6d41\u7a0b\"<\/p>\n
Dva\u5b9e\u8df5<\/h2>\n
\u4f7f\u7528Dva\u5b8c\u6210\u8def\u7531\u5207\u6362\u5e76\u4e14\u505a\u4e2a\u8868\u683c<\/p>\n
\u5165\u53e3\u6587\u4ef6<\/h3>\n
\u9996\u5148\uff0c\u5728\u5165\u53e3\u6587\u4ef6index.js<\/code>\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u5df2\u7ecf\u4e3a\u6211\u4eec\u7559\u4e86model\u6a21\u578b\u548crouter\u8def\u7531\u7684\u4f4d\u7f6e\u3002\u5728\u5f00\u53d1\u4e2d\uff0c\u6240\u6709\u7684model\u6a21\u578b\u6587\u4ef6\u90fd\u9700\u8981\u5728\u8fd9\u91cc\u6ce8\u518c<\/strong>\uff0c\u8fd9\u6837\u624d\u80fd\u7528connect\u8ddf\u7ec4\u4ef6\u8054\u7cfb\u8d77\u6765\u3002<\/p>\n
import dva from 'dva';\nimport '.\/index.css';\n\n\/\/ 1. Initialize\nconst app = dva();\n\n\/\/ 2. Plugins\n\/\/ app.use({});\n\n\/\/ 3. Model\n\/\/ app.model(require('.\/models\/example').default);\n\n\/\/ 4. Router\napp.router(require('.\/router').default);\n\n\/\/ 5. Start\napp.start('#root');<\/code><\/pre>\n
\u5148\u4e0d\u7ba1Model\uff0cRouter\u544a\u8bc9\u6211\u4eec\u5f15\u7528\u4e86router.js<\/code>\uff0c\u6253\u5f00\u770b\u4e00\u773c<\/p>\n
import React from 'react';\nimport { Router, Route, Switch } from 'dva\/router';\nimport IndexPage from '.\/routes\/IndexPage';\n\nfunction RouterConfig({ history }) {\n  return (\n    <Router history={history}>\n      <Switch>\n        <Route path="\/" exact component={IndexPage} \/>\n      <\/Switch>\n    <\/Router>\n  );\n}\n\nexport default RouterConfig;<\/code><\/pre>\n
\u53ea\u6709\u4e00\u4e2a\uff0c\u901a\u4fd7\u6613\u61c2\uff0c\u5728\u8def\u5f84\u4e3a\/<\/code>\u65f6\u5339\u914d\u5230IndexPage<\/code>\u3002\uff08\u4e0d\u7528\u6211\u4eec\u81ea\u5df1\u5b89\u88c5Router\u81ea\u5df1\u5efa\u7acbrouter.js<\/code>\u81ea\u5df1\u914d\u7f6e\u662f\u4e0d\u662f\u5f88\u65b9\u4fbf~\uff09\u6ce8\u610f\u8fd9\u91cc\u52a0\u4e86exact\uff0c\u8868\u793a\u7cbe\u786e\u5339\u914d\uff0c\u5982\u679c\u4e0d\u52a0\u5219\/aaa<\/code>\u3001\/bbb<\/code>\u3001\/whatever<\/code>\u90fd\u4f1a\u5339\u914d\u5230IndexPage<\/code>\uff0c\u7cbe\u786e\u5339\u914d\u7684\u8bdd\u53ea\u6709\u8f93\u5165\/<\/code>\u7684\u65f6\u5019\u624d\u4f1a\u5339\u914d\u3002<\/p>\n
IndexPage\u91cc\u80fd\u770b\u5230\u6b22\u8fce\u4fe1\u606f\uff0c\u90a3\u4e2a\u5c0f\u4e11\u56fe\u7247\u548c\u63d0\u793a\u6587\u5b57\u3002<\/p>\n
\u8def\u7531\u5207\u6362<\/h3>\n
\uff081\uff09\u5b89\u88c5Antd\uff01\u867d\u7136Dva\u5f88\u8d34\u5fc3\u7684\u5c01\u88c5\u4e86\u5f88\u591a\u5de5\u5177\u5305\u4f46\u662f\u5e76\u6ca1\u6709\u5c01\u88c5\u6837\u5f0f\u5e93\uff0c\u6240\u4ee5Antd\u8fd8\u662f\u9700\u8981\u81ea\u5df1\u624b\u52a8\u5b89\u88c5<\/p>\n
yarn add babel-plugin-import\nyarn add antd<\/code><\/pre>\n
\u5e76\u7f16\u8f91.webpackrc<\/code>\u6587\u4ef6<\/p>\n
{\n  "extraBabelPlugins": [[\n    "import", {\n      "libraryName": "antd",\n      "libraryDirectory": "es",\n      "style": true\n    }\n  ]]\n}<\/code><\/pre>\n
\uff082\uff09\u65b0\u589e\u7ec4\u4ef6<\/p>\n
\u5728routes\u91cc\u65b0\u5efaaaa.js<\/code>\u548cbbb.js<\/code>\u4e24\u4e2a\u7ec4\u4ef6\u3002\u5185\u5bb9\u968f\u4fbf\u5199\u70b9\uff0c\u53ea\u662f\u4e3a\u4e86\u5207\u6362\u4f7f\u7528\u3002<\/p>\n
\/\/ aaa.js\nimport React, { Component } from 'react'\nimport { connect } from 'dva'\n\nclass AAA extends Component { \/\/BBB\u540c\u7406\n  render() {\n    return (\n      <div>\n        <h1>AAA<\/h1>\n      <\/div>\n    )\n  }\n}\n\nAAA.propsTypes = {}\nexport default connect()(AAA)<\/code><\/pre>\n
\uff083\uff09\u5b9a\u4e49\u5bfc\u822a\u680f<\/p>\n
\u7136\u540e\uff0c\u5728components\u91cc\u5efa\u7acb\u4e24\u4e2a\u516c\u5171\u7ec4\u4ef6header.js<\/code>\u548clayout.js<\/code>\u3002<\/p>\n
header.js<\/code>\u7528\u4f5c\u9875\u9762\u4e0a\u65b9\u7684\u5bfc\u822a\u680f\uff0c\u7406\u60f3\u6548\u679c\u5982\u4e0b\uff0c\u901a\u8fc7\u70b9\u51fb\u4e0d\u540c\u5bfc\u822a\u5207\u6362\u5730\u5740\u680furl\u3002<\/p>\n
header.js<\/code>\u9700\u8981\u5f15\u5165antd<\/code>\u7684Menu<\/code>\u6a21\u5757\uff0c\u4ee5\u53cadva<\/code>\u5c01\u88c5\u597d\u7684Link<\/code>\u3002Link<\/code>\u7684\u4f5c\u7528\u5373\u5339\u914d\u76f8\u5e94\u7684\u8def\u5f84\u3002<\/p>\n
import React, { Component } from 'react'\nimport { Menu } from 'antd';\nimport { Link } from 'dva\/router'\n\nclass Header extends Component {\n  render() {\n    return (\n      <Menu\n        theme="dark"\n        mode="horizontal"\n        defaultSelectedKeys={['1']}\n        style={{ lineHeight: '64px' }}\n      >\n        <Menu.Item key="1">\n          <Link to="\/">Index<\/Link>\n        <\/Menu.Item>\n        <Menu.Item key="2">\n          <Link to="\/aaa">AAA<\/Link>\n        <\/Menu.Item>\n        <Menu.Item key="3">\n          <Link to="\/bbb">BBB<\/Link>\n        <\/Menu.Item>\n      <\/Menu>\n    )\n  }\n}\n\nexport default Header;<\/code><\/pre>\n
\uff084\uff09\u5b9a\u4e49\u5e03\u5c40<\/p>\n
layout.js<\/code>\u7528\u6765\u5f53\u6574\u4f53\u9875\u9762\u5e03\u5c40\uff0c\u6211\u4eec\u60f3\u628a\u9875\u9762\u5206\u6210\u4e24\u90e8\u5206\uff0c\u4e0a\u9762\u653e\u5bfc\u822a\u6761\u4e0b\u9762\u653e\u5b50\u5185\u5bb9\u3002\u5934\u90e8\u9700\u8981\u5f15\u5165\u521a\u521a\u7684header\u7ec4\u4ef6\uff0c\u7136\u540e\u4ee5<Header \/><\/code>\u7684\u65b9\u5f0f\u63d2\u5165\u5230\u8282\u70b9\u4e2d\u3002props<\/code>\u662f\u8be5\u7ec4\u4ef6\u7684\u5c5e\u6027\uff0c\u7528\u4e8e\u4f20\u9012\u6570\u636e\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u6709\u81ea\u5df1\u7684props<\/code>\u3002props.children<\/code>\u8868\u793a\u8be5\u7ec4\u4ef6\u7684\u6240\u6709\u5b50\u8282\u70b9\u3002<\/p>\n
\/\/ layout.js\nimport React, { Component } from 'react'\nimport { connect } from 'dva';\nimport Header from '..\/components\/header'\n\nclass Layout extends Component {\n  render() {\n    const { children } = this.props\n    return (\n      <div>\n        <Header \/>\n        <div style={{ background: '#fff', padding: 24 }}>{children}<\/div>\n      <\/div>\n    )\n  }\n}\n\nexport default Layout;<\/code><\/pre>\n
\uff085\uff09\u8fde\u63a5\u8def\u7531<\/p>\n
\u6b64\u65f6\u8fd8\u5dee\u6700\u540e\u4e00\u6b65\uff0c\u5c31\u662f\u628a\u8def\u7531\u8ddf\u521a\u521a\u7684\u8fd9\u4e9b\u7ec4\u4ef6\u8054\u7cfb\u8d77\u6765\u3002\u6211\u4eec\u56de\u5230router.js<\/code>\uff0c\u4fee\u6539\u5982\u4e0b\uff1a<\/p>\n
\/\/ router.js\nimport React from 'react';\nimport { Router, Route, Switch } from 'dva\/router';\nimport Layout from '.\/components\/layout'\nimport IndexPage from '.\/routes\/IndexPage';\nimport AAA from '.\/routes\/aaa';\nimport BBB from '.\/routes\/bbb';\n\nfunction RouterConfig({ history }) {\n  return (\n    <Router history={history}>\n      <Layout>\n        <Switch>\n          <Route path="\/" exact component={IndexPage} \/>\n          <Route path="\/aaa" exact component={AAA} \/>\n          <Route path="\/bbb" exact component={BBB} \/>\n        <\/Switch>\n      <\/Layout>\n    <\/Router>\n  );\n}\n\nexport default RouterConfig;<\/code><\/pre>\n
return\u4e2d\u7684\u5b50\u8282\u70b9\uff0c\u5c31\u662f\u4f1a\u653e\u5230layout.js<\/code>\u7684props.children<\/code>\u4e2d\u7684\u5185\u5bb9\u3002<\/p>\n
\u4ee5\u4e0a\u64cd\u4f5c\u7684\u6d41\u7a0b\u662f\uff0c\u5728header.js<\/code>\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u70b9\u51fb\u4e0d\u540c\u5bfc\u822a\u680f\uff0c\u66f4\u6362\u5730\u5740\u680f\u7684url\uff1b\u63a5\u4e0b\u6765\u5728router.js<\/code>\u4e2d\uff0c\u901a\u8fc7\u5339\u914d\u5730\u5740\u680f\u7684url\uff0c\u9009\u62e9\u52a0\u8f7d\u7684\u5b50\u7ec4\u4ef6\u5448\u73b0\u5230\u9875\u9762\u4e0a\u3002<\/p>\n
\u8def\u7531\u5230\u6b64\u7ed3\u675f\uff0c\u63a5\u4e0b\u6765\u52a0\u4e0a\u5217\u8868\u3002<\/p>\n
\u5217\u8868\u64cd\u4f5c<\/h3>\n
\uff081\uff09\u521b\u5efaroutes\u9875\u9762\u7ec4\u4ef6<\/p>\n
\u5728routes\/IndexPage.js<\/code>\u9875\u9762\u7ec4\u4ef6\u91cc<\/p>\n
<div>\n  <Button type="primary" onClick={this.changeData}>\u4fee\u6539\u6570\u636e<\/Button>\n  <div>\n    <Table columns={columns} dataSource={data}\/>\n  <\/div>\n<\/div><\/code><\/pre>\n
Table\u6807\u7b7e\u6709\u4e24\u4e2a\u5c5e\u6027\uff0ccolumns<\/code>\u662f\u8868\u5934\uff0cdataSource<\/code>\u662f\u6570\u636e\uff0c\u5747\u7ed1\u5b9a\u5230state<\/code>\u3002\u53ea\u662f\u8fd9\u4e00\u6b21\uff0cstate<\/code>\u548caction<\/code>\u90fd\u4e0d\u662f\u76f4\u63a5\u5199\u5728\u9875\u9762\u7ec4\u4ef6\u4e0b\uff0c\u800c\u662f\u5b9a\u4e49\u5230\u5bf9\u5e94\u7684\u6a21\u578b\u6587\u4ef6\u4e2d\u3002<\/p>\n
\uff082\uff09\u521b\u5efamodels\u6a21\u578b<\/p>\n
\u65b0\u5efamodels\/index-page.js<\/code>\u4f5c\u4e3a\u6a21\u578b\u6587\u4ef6\u3002\u53ef\u4ee5\u53c2\u8003\u9879\u76ee\u81ea\u5e26\u7684example.js<\/code>\uff0c\u91cc\u9762\u5df2\u7ecf\u7ed9\u51fa\u4e86state<\/code>\uff0ceffects<\/code>\u548creducers<\/code>\u7684\u5730\u65b9\u3002<\/p>\n
namespace<\/code>\u662f\u8be5\u6a21\u578b\u6587\u4ef6\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u4e5f\u662f\u5728\u5168\u5c40state<\/code>\u4e0a\u7684\u5c5e\u6027\uff0c\u5728routes<\/code>\u7ec4\u4ef6\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u7528this.props.\u67d0\u547d\u540d\u7a7a\u95f4<\/code>\u83b7\u53d6state<\/code>\uff08\u6839\u8282\u70b9\uff09\u4e2d\u67d0\u547d\u540d\u7a7a\u95f4\u7684\u6570\u636e\u3002<\/p>\n
export default {\n  namespace: 'indexPage',\n  state: {\n    columns: [{\n      title: '\u57ce\u5e02',\n      dataIndex: 'city',\n    }, {\n      title: '\u7701\u4efd',\n      dataIndex: 'province',\n    }],\n    data: [{\n      "key": "1",\n      "city": "\u676d\u5dde",\n      "province": "\u6d59\u6c5f"\n    }, {\n      "key": "2",\n      "city": "\u5e7f\u5dde",\n      "province": "\u5e7f\u4e1c"\n    }]\n  },\n\n  subscriptions: {\n\n  },\n\n  effects: {\n\n  },\n\n  reducers: {\n\n  },\n};<\/code><\/pre>\n
\uff083\uff09\u901a\u8fc7connect\u5173\u8054\u6570\u636e<\/p>\n
\u56de\u5230routes\/IndexPage.js<\/code>\u9875\u9762\u7ec4\u4ef6\uff0c\u5982\u679c\u6211\u4eec\u5728routes<\/code>\u4e2d\u60f3\u8981\u4f7f\u7528model<\/code>\u91cc\u9762\u7684\u6570\u636e\uff0c\u9700\u8981\u901a\u8fc7connect<\/code>\u5de5\u5177\u6765\u4f20\u9012\uff0c\u5176\u57fa\u672c\u7528\u6cd5\u662fconnect(\u4ecemodel\u4e2d\u83b7\u53d6\u6570\u636e)(\u7ed1\u5b9a\u5230routes\u7ec4\u4ef6)<\/code>\u3002<\/p>\n
import React from 'react';\nimport { connect } from 'dva';\nimport { Button, Table, Row } from 'antd';\n\nclass IndexPage extends React.Component {\n  changeData = () => {\n    console.log("Change Data");\n  };\n\n  render() {\n    const { columns, data } = this.props.indexPage; \/\/\u83b7\u53d6indexPage\u4e2d\u7684state\n    return (\n      <div>\n        <Button type="primary" onClick={this.changeData}>\u4fee\u6539\u6570\u636e<\/Button>\n        <div>\n          <Table columns={columns} dataSource={data}\/>\n        <\/div>\n      <\/div>\n    );\n  }\n}\n\nexport default connect(({ indexPage }) => ({\n  indexPage,\n}))(IndexPage);<\/code><\/pre>\n
\uff084\uff09\u66f4\u65b0index.js<\/code>\u4e2d\u7684app.model<\/code><\/p>\n
\/\/ Model\napp.model(require('.\/models\/index-page').default);<\/code><\/pre>\n
\u8fd9\u6837\uff0cmodels\/index-page.js<\/code>\u7684state<\/code>\u6570\u636e\u5c31\u88ab\u7ed1\u5b9a\u5230routes\/IndexPage.js<\/code>\u7684Table<\/code>\u8282\u70b9\u4e0a\uff0c\u5217\u8868\u88ab\u8d4b\u4e88\u4e86\u4e24\u884c\u503c\u3002<\/p>\n
services\u83b7\u53d6\u6570\u636e<\/h3>\n
\uff081\uff09\u521b\u5efaservices<\/p>\n
\u5047\u8bbe\u6709\u4e2ajson\u6570\u636e\u662f\u8fd9\u6837\u7684\uff0c\u6211\u4eec\u60f3\u5c06\u5176\u5f53\u505a\u4e00\u884c\u6dfb\u52a0\u5230\u4e0a\u9762\u8868\u683c\u7684\u5217\u8868\u91cc\u3002<\/p>\n
\u5728services<\/code>\u4e2d\u6211\u4eec\u540c\u540e\u53f0\u8fdb\u884c\u4ea4\u4e92\uff0c\u65b0\u5efaservices\/city.js<\/code>\u6587\u4ef6<\/p>\n
\/\/services\/city.js\nimport request from '..\/utils\/request';\n\nexport function getCity() {\n  return request('http:\/\/www.yezhou.cc\/api\/city.php');\n}<\/code><\/pre>\n
utils\/request.js<\/code>\u91cc\u9762\u5df2\u7ecf\u8d34\u5fc3\u7684\u81ea\u5e26\u4e86request\u65b9\u6cd5\u7528\u4e8e\u8bf7\u6c42url\uff0c\u76f4\u63a5\u62ff\u6765\u4f7f\u7528\u5373\u53ef\u3002\u8fd9\u6837\uff0c\u5728\u6211\u4eec\u8c03\u7528getCity()<\/code>\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u8bf7\u6c42\u6570\u636e\u3002<\/p>\n
\u53cb\u60c5\u63d0\u793a\uff0c\u4ee5\u5f80\u6211\u4eec\u4e00\u76f4\u4e60\u60ef\u76f4\u63a5\u5728model\u91cc\u8c03\u7528getCity()<\/code>\uff0c\u7136\u540e\u7528setState<\/code>\u6539\u53d8state\u7684\u503c\uff0c\u4f46\u8fd9\u662f\u4e0d\u7b26\u5408Dva<\/code>\u7684\u89c4\u5219\u7684\uff0cDva<\/code>\u89c4\u5b9a\u6211\u4eec\u5fc5\u987b\u901a\u8fc7\u89e6\u53d1action<\/code>\u624d\u53ef\u4ee5\u6539\u53d8state<\/code>\uff0c\u4e5f\u5c31\u662f\u4e0b\u4e00\u6b65\u3002<\/p>\n
\uff082\uff09\u89e6\u53d1action<\/p>\n
\u5bf9\u4e8e\u8fd9\u4e2a\u5217\u8868\uff0c\u6211\u4eec\u5e0c\u671b\u70b9\u51fb\u6309\u94ae\u6dfb\u52a0\u4e00\u884c\u3002\u6839\u636e\u524d\u8ff0\u6211\u4eec\u77e5\u9053\uff0c\u6539\u53d8state<\/code>\u7684\u503c\u9700\u8981dispatch(action)<\/code>\uff0c\u518d\u8c03\u7528reducer<\/code>\u6539\u53d8state<\/code>\uff0c\u8fdb\u800c\u91cd\u65b0\u6e32\u67d3\uff0c\u8fd9\u662fDva<\/code>\u89c4\u5b9a\u7684\u6570\u636e\u6d41\u4f20\u8f93\u65b9\u5f0f\u3002<\/p>\n
\u8fd9\u91cc\u7684action<\/code>\u6709\u4e24\u79cd\u8d70\u5411\uff0c\u5bf9\u4e8e\u540c\u6b65\u884c\u4e3a\uff08\u6bd4\u5982\u6211\u5c31\u6539\u53d8\u4e2a\u6309\u94ae\u989c\u8272\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528model<\/code>\u4e2d\u7684reducer<\/code>\u3002\u800c\u5bf9\u4e8e\u5f02\u6b65\u884c\u4e3a\uff08\u6bd4\u5982\u4ece\u670d\u52a1\u5668\u8bf7\u6c42\u6570\u636e\uff09\uff0c\u9700\u8981\u5148\u89e6\u53d1effects<\/code>\u7136\u540e\u8c03\u7528reducer<\/code>\u3002<\/p>\n
\u4e0b\u9762\u6211\u4eec\u5728routes\/IndexPage.js<\/code>\u91cc\uff0c\u901a\u8fc7onClick={this.changeData}<\/code>\u6309\u94ae\u4e8b\u4ef6\uff0c\u89e6\u53d1\u4e00\u4e2aaction<\/code>\u7ed9\u6a21\u578b\u6587\u4ef6\u3002<\/p>\n
\/\/\u70b9\u51fb\u6309\u94ae\u89e6\u53d1\nchangeData = () => {\n  console.log("Change Data");\n  const { dispatch } = this.props;\n  dispatch({\n    type: 'indexPage\/addCity',\n    payload: {},\n  });\n};<\/code><\/pre>\n
\u8fd9\u8868\u793a\u6211\u4eec\u8981\u8c03\u7528models\/index-page.js<\/code>\u7684addCity<\/code>\u65b9\u6cd5\u3002<\/p>\n
\u5728models\/index-page.js<\/code>\u91cc\uff0c\u6211\u4eec\u9700\u8981\u5728effects<\/code>\u4e2d\u5b9a\u4e49\u597d\u8fd9\u4e2a\u65b9\u6cd5\u3002effects<\/code>\u5c5e\u6027\u7684\u8bed\u6cd5\u53ef\u4ee5\u53c2\u8003Redux-saga \u4e2d\u6587\u6587\u6863<\/a>\uff0c\u5b83\u53ef\u4ee5\u83b7\u53d6\u5168\u5c40state<\/code>\uff0c\u4e5f\u53ef\u4ee5\u89e6\u53d1action<\/code>\u3002effects<\/code>\u5185\u90e8\u4f7f\u7528yield<\/code>\u5173\u952e\u5b57\u6807\u8bc6\u6bcf\u4e00\u6b65\u7684\u64cd\u4f5c\uff0ccall<\/code>\u8868\u793a\u8c03\u7528\u5f02\u6b65\u51fd\u6570\uff0cput<\/code>\u8868\u793adispatch(action)<\/code>\u3002<\/p>\n
import { getCity } from '..\/services\/city'\n\neffects: {\n  *addCity({ payload }, { call, put }) {  \/\/ eslint-disable-line\n    const myCity = yield call(getCity, {});\n    yield put({\n      type: 'ADD_CITY',\n      payload: {\n        myCity: myCity.data\n      },\n    });\n  },\n},<\/code><\/pre>\n
\u8fd9\u8868\u660e\uff0c\u6211\u4eec\u5148\u8bfb\u53d6service<\/code>\u4e2d\u7684getCity()<\/code>\u65b9\u6cd5\uff0c\u5c06\u5b83\u653e\u5230payload<\/code>\u91cc\uff0c\u7136\u540e\u8c03\u7528reducer<\/code>\u91cc\u9762\u540d\u4e3aADD_CITY<\/code>\u7684action<\/code>\uff0c\u544a\u8bc9\u5b83\u8981\u6539\u53d8state<\/code>\u3002<\/p>\n
\uff083\uff09\u8c03\u7528reducer<\/p>\n
\u6211\u4eec\u8bf4\u8fc7\uff0creducer<\/code>\u662f\u7eaf\u51fd\u6570\uff0c\u5f53\u8f93\u5165\u76f8\u540c\u65f6\u8f93\u51fa\u4e5f\u5fc5\u7136\u76f8\u540c\uff0c\u5176\u8f93\u5165\u53c2\u6570\u662f\u5f53\u524d\u7684state\u548c\u6536\u5230\u7684action\uff0c\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684state<\/code>\u3002...<\/code>\u4e09\u70b9\u8fd0\u7b97\u7b26\u7684\u4f5c\u7528\u662f\u628a\u6570\u7ec4\u6253\u5f00\u8fdb\u884c\u64cd\u4f5c\uff0c\u6211\u4eec\u628apayload\u4e2d\u7684\u4fe1\u606f\u52a0\u5728state\u7684\u539f\u6709data\u4e4b\u540e\u3002<\/p>\n
reducers: {\n  ADD_CITY(state, action) {\n    return { ...state,\n      data: state.data.concat(action.payload.myCity) };\n  },\n},<\/code><\/pre>\n
\u70b9\u51fb\u4e00\u4e0b\u6309\u94ae\uff0c\u662f\u4e0d\u662f\u5df2\u7ecf\u6dfb\u52a0\u6210\u529f\u4e86~ <\/p>\n
\u539f\u751fredux\u5e93\u9700\u8981\u624b\u52a8\u53bb\u521b\u5efa\u76d1\u542c\u91cd\u65b0\u6e32\u67d3\u9875\u9762\u624d\u80fd\u770b\u5230\u66f4\u65b0\u6548\u679c\uff0c\u800c\u5728Dva<\/code>\u4e2d\uff0c\u7531\u4e8e\u4f7f\u7528\u4e86connect<\/code>\uff0c\u4f1a\u5728\u5185\u90e8\u81ea\u52a8\u66f4\u65b0\uff0c\u5e76\u4e0d\u7528\u624b\u52a8\u5237\u65b0\u3002<\/p>\n
\u8fd9\u6837\uff0c\u5c31\u5b8c\u6210\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u9875\u9762\u5207\u6362\u548c\u4fee\u6539state\u7684\u4f8b\u5b50\u3002<\/p>\n
\"React-Dva\u5165\u95e8\"<\/p>\n","protected":false},"excerpt":{"rendered":"
create-react-app\u521b\u5efa\u5de5\u7a0b\u53ea\u80fd\u521b\u5efa\u4e00\u4e2a\u6700\u57fa\u672c\u7684\u7a7a\u7a0b\u5e8f\u3002\u9700\u8981\u624b\u52a8\u5b89\u88c5\u5f88\u591a\u4f9d\u8d56\u5305\u53ca\u4ee3\u7801\u64cd\u4f5c\u3002Dva\u5c06 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[292],"class_list":["post-1067","post","type-post","status-publish","format-standard","hentry","category-react","tag-dva"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1067"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1067\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}