【第二部分】create-react-app 技术栈：react+react-router+redux+axios+es6+webpack

##第八步：配置代理，解决跨域问题，方便开发环境请求数据

npm install http-proxy-middleware --save
# or
yarn add http-proxy-middleware

然后在src目录下创建 setupProxy.js 文件

// setupProxy.js
const proxy = require('http-proxy-middleware');

module.exports = function(app) {
    app.use(
        proxy('/api', { //api是需要转发的请求
        target: 'http://localhost:5000', // 这里是接口服务器地址
        changeOrigin: true
        })
    )
}

注意–遇到问题1：运行后报错，需要安装babel-plugin-transform-react-jsx

npm install --save-dev @babel/plugin-transform-react-jsx
执行上面代码，没有作用

解决方法：

1.删除 node_modules 文件夹
2.运行 yarn
3.重新 npm start
或
1.  进入项目根目录
2.  rm -rf node_modules
3.  npm install (不要使用 yarn )

yarn start
运行成功

##第九步：在运行一个React项目的时候浏览器控制台会提醒你去安装react devtools调试工具。

参考链接：https://www.cnblogs.com/liubeimeng/p/10680420.html

https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi

//安装React Devtools调试工具
git clone https://github.com/facebook/react-devtools.git
cd react-devtools
npm --registry https://registry.npm.taobao.org install
npm run build:extension:chrome

//安装成功，并且会在你的项目中生成一个新的文件夹：
//react-project⁩ ▸ ⁨react⁩ ▸ ⁨react-devtools⁩ ▸ ⁨shells⁩ ▸ ⁨chrome⁩ ▸ ⁨build⁩

npm install -g react-devtools

##第十步：封装axios， 并配置不同环境下的域名，方便请求接口

在src下新建文件夹axios

src/axios/config.js

src/axios/httpServer.js

// src/axios/config.js
/**
 * axios配置
 */
import axios from 'axios';
import { message } from 'antd';

// axios.defaults.withCredentials = true;
// 超时时间30秒
axios.defaults.timeout = 60 * 1000;
// axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';

// axios请求拦截器
axios.interceptors.request.use(config => {
    return config;
}, error => {
    message.warn(error);
    return Promise.reject(error);
});

// axios响应拦截器
axios.interceptors.response.use(response => {
    if (response.data) {
        if (response.data.code) {
            if(response.data.code === -1000 || response.data.code === -1001){
                // 未登录或登录超时，跳登录
                if(response.data.data && response.data.data.redirect){
                    window.location.href = response.data.data.redirect;
                }
                else if(response.data.msg){
                    message.warn(response.data.msg);
                    // 跳转到错误页面
                    // browserHistory.push('/404');
                }
            }
            return response;
        }
    }
    return response;
}, error => {
    console.log(error);
    return Promise.reject(error); // 返回接口返回的错误信息
});

// src/axios/httpServer.js
/**
 * axios的封装 get post
 */
import axios from 'axios'
import { BASEURL } from '../assets/js/globalConstants'
import './config'

const HEADER = {'Content-Type': 'application/json;charset=UTF-8'}
const FILEHEADER = {'Content-Type': 'multipart/form-data'}

export default {
    // 请求接口成功的状态值
    responseOkCode: 0,
    // 用户退出
    getUserQuitUrl: 'account/logout',
    // 用户信息
    getUserInfoUrl: 'account/info',
    

    async requestGet(url,params){
        let response =  await axios.get(BASEURL+url,{params:params});
        if(process.env.NODE_ENV !== 'production'){
            console.log('%c'+ url,'color:red',',param:',params,',response:',response.data)
        }
        return response.data;
    },

    async requestPost(url,param,timeout=60*1000*5){
        try {
            let response = await this.request(url,'post',param,timeout);
            if(process.env.NODE_ENV !== 'production'){
                console.log('%c'+ url,'color:red',',param:',param,',response:',response.data)
            }
            return response.data;
        }catch (e) {
            if(process.env.NODE_ENV !== 'production'){
                console.log('%c'+ url,'color:red',',param:',param,',response:','服务器异常，请稍后重试')
            }
            return {code:'error',msg:'服务器异常，请稍后重试'};
        }
    },

    async requestUpload(url,param){

        try {
            let response =  await axios.get(BASEURL+url,'post',{param:param,headers:FILEHEADER});
            if(process.env.NODE_ENV !== 'production'){
                console.log('%c'+ url,'color:red',',param:',param,',response:',response.data)
            }
            return response.data;
        }catch (e) {
            if(process.env.NODE_ENV !== 'production'){
                console.log('%c'+ url,'color:red',',param:',param,',response:','服务器异常，请稍后重试')
            }
            return {code:'error',msg:'服务器异常，请稍后重试'};
        }
    },

    request(url,method,param,timeout,headers=HEADER){
        return axios({
            method:method,
            url:BASEURL + url,
            headers:headers,
            data:param,
            timeout:timeout
        })
    }
}

//  ../assets/js/globalConstants.js
/**
 * 全局常量-根据不同环境配置相应的值
 * 
 */
let BASEURL = '';
let BASEURL_DOMAIN = '';
const API_PREFIX = '/api/'; //api前缀
const protocol = window.location.protocol;

const DEV_DOMAIN = ''; //开发环境域名
const TEST_DOMAIN = `${protocol}//test.xx.com`; //测试环境域名
const PRE_DOMAIN = `${protocol}//pre.xx.com/`; //预发环境域名
const PRO_DOMAIN = `${protocol}//www.xx.com`; //生产环境域名


if(process.env.REACT_APP_SECRET_API === 'development'){
    BASEURL_DOMAIN = DEV_DOMAIN;
}else if(process.env.REACT_APP_SECRET_API === 'test'){
    BASEURL_DOMAIN = TEST_DOMAIN;
}else if(process.env.REACT_APP_SECRET_API === 'preplanned'){
    BASEURL_DOMAIN = PRE_DOMAIN;
}else if(process.env.REACT_APP_SECRET_API === 'production'){
    BASEURL_DOMAIN = PRO_DOMAIN;
}

BASEURL = BASEURL_DOMAIN + API_PREFIX; //请求接口地址

export { BASEURL }

// package.json 文件

{
  "name": "react-new-project",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@babel/core": "7.6.0",
    "@babel/plugin-transform-react-jsx": "^7.7.4",
    "@svgr/webpack": "4.3.2",
    "@typescript-eslint/eslint-plugin": "^2.2.0",
    "@typescript-eslint/parser": "^2.2.0",
    "antd": "^3.26.0",
    "babel-eslint": "10.0.3",
    "babel-jest": "^24.9.0",
    "babel-loader": "8.0.6",
    "babel-plugin-import": "^1.13.0",
    "babel-plugin-named-asset-import": "^0.3.4",
    "babel-polyfill": "^6.26.0",
    "babel-preset-react-app": "^9.0.2",
    "camelcase": "^5.2.0",
    "case-sensitive-paths-webpack-plugin": "2.2.0",
    "css-loader": "2.1.1",
    "dotenv": "6.2.0",
    "dotenv-expand": "5.1.0",
    "eslint": "^6.1.0",
    "eslint-config-react-app": "^5.0.2",
    "eslint-loader": "3.0.2",
    "eslint-plugin-flowtype": "3.13.0",
    "eslint-plugin-import": "2.18.2",
    "eslint-plugin-jsx-a11y": "6.2.3",
    "eslint-plugin-react": "7.14.3",
    "eslint-plugin-react-hooks": "^1.6.1",
    "file-loader": "3.0.1",
    "fs-extra": "7.0.1",
    "html-webpack-plugin": "4.0.0-beta.5",
    "http-proxy-middleware": "^0.20.0",
    "identity-obj-proxy": "3.0.0",
    "is-wsl": "^1.1.0",
    "jest": "24.9.0",
    "jest-environment-jsdom-fourteen": "0.1.0",
    "jest-resolve": "24.9.0",
    "jest-watch-typeahead": "0.4.0",
    "mini-css-extract-plugin": "0.8.0",
    "optimize-css-assets-webpack-plugin": "5.0.3",
    "pnp-webpack-plugin": "1.5.0",
    "postcss-flexbugs-fixes": "4.1.0",
    "postcss-loader": "3.0.0",
    "postcss-normalize": "7.0.1",
    "postcss-preset-env": "6.7.0",
    "postcss-safe-parser": "4.0.1",
    "react": "^16.12.0",
    "react-app-polyfill": "^1.0.4",
    "react-dev-utils": "^9.1.0",
    "react-dom": "^16.12.0",
    "resolve": "1.12.0",
    "resolve-url-loader": "3.1.0",
    "semver": "6.3.0",
    "style-loader": "1.0.0",
    "terser-webpack-plugin": "1.4.1",
    "ts-pnp": "1.1.4",
    "url-loader": "2.1.0",
    "webpack": "4.41.0",
    "webpack-dev-server": "3.2.1",
    "webpack-manifest-plugin": "2.1.1",
    "workbox-webpack-plugin": "4.3.1"
  },
  "scripts": {
    "start": "cross-env REACT_APP_SECRET_API=development node scripts/start.js",
    "testbuild": "cross-env REACT_APP_SECRET_API=test node scripts/build.js",
    "prebuild": "cross-env REACT_APP_SECRET_API=preplanned node scripts/build.js",
    "build": "cross-env REACT_APP_SECRET_API=production node scripts/build.js"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "jest": {
    "roots": [
      "<rootDir>/src"
    ],
    "collectCoverageFrom": [
      "src/**/*.{js,jsx,ts,tsx}",
      "!src/**/*.d.ts"
    ],
    "setupFiles": [
      "react-app-polyfill/jsdom"
    ],
    "setupFilesAfterEnv": [],
    "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}",
      "<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}"
    ],
    "testEnvironment": "jest-environment-jsdom-fourteen",
    "transform": {
      "^.+\\.(js|jsx|ts|tsx)$": "<rootDir>/node_modules/babel-jest",
      "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\\.(js|jsx|ts|tsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
    },
    "transformIgnorePatterns": [
      "[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$",
      "^.+\\.module\\.(css|sass|scss)$"
    ],
    "modulePaths": [],
    "moduleNameMapper": {
      "^react-native$": "react-native-web",
      "^.+\\.module\\.(css|sass|scss)$": "identity-obj-proxy"
    },
    "moduleFileExtensions": [
      "web.js",
      "js",
      "web.ts",
      "ts",
      "web.tsx",
      "tsx",
      "json",
      "web.jsx",
      "jsx",
      "node"
    ],
    "watchPlugins": [
      "jest-watch-typeahead/filename",
      "jest-watch-typeahead/testname"
    ]
  },
  "babel": {
    "presets": [
      "react-app"
    ]
  },
  "devDependencies": {
    "babel-plugin-transform-react-jsx": "^6.24.1",
    "cross-env": "^6.0.3",
    "node-sass": "^4.13.0",
    "sass-loader": "^7.2.0"
  }
}

修改README.md文件

# 项目技术栈：
## react + react-redux + react-router + typeScript + axios + es6 

## 安装
### `npm install`

## 运行
### `npm run start` or
### `yarn start` 

## 测试环境打包
### `npm run testbuild` 

## 预发环境打包
### `npm run prebuild` 

## 生产环境打包
### `npm run build` 

注意： 先备份一份项目，不需要typeScript，再继续配置

未完，继续下一篇

【第一部分】create-react-app 技术栈：react+react-router+redux+axios+es6+webpack

【第二部分】create-react-app 技术栈：react+react-router+redux+axios+es6+webpack

【第三部分】create-react-app 技术栈：react+react-router+redux+axios+es6+webpack