React没有在简单的React组件中定义（通用）

我正在使用15.0.1并使用React创建通用应用程序

我得到的React没有在以下组件中定义

import {Component} from "react";

export default class HeroSearchView extends Component{

    render() {

        return (
            <div className='row'>
                hello
            </div>
        );
    }
}

以下代码调用React组件

import React from "react";
import { connect } from 'react-redux'
import Coupon from '../../common/components/Coupon'
import { actions as miscActions } from '../../redux/modules/misc'
import HeroSearchView from './components/HeroSearchView'


const mapStateToProps = (state) => ({
    misc:state.misc
})

export class HomeView extends React.Component{
    render() {

        return (
            <div>
                <HeroSearchView  />
                <Coupon {...this.props} />
            </div>
        );
    }
}

export default connect(mapStateToProps, Object.assign({}, miscActions))(HomeView)

我现在有点挠头，以下信息意味着......

ReferenceError: React is not defined
    at HeroSearchView.render (HeroSearchView.jsx:8:13)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponentWithoutOwnerOrContext (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:679:34)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:699:32)
    at [object Object].wrapper [as _renderValidatedComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at [object Object].ReactCompositeComponentMixin.performInitialMount (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:284:30)
    at [object Object].ReactCompositeComponentMixin.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:237:21)
    at [object Object].wrapper [as mountComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at Object.ReactReconciler.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactReconciler.js:39:35)
    at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactMultiChild.js:203:44)
    at ReactDOMComponent.Mixin._createContentMarkup (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactDOMComponent.js:589:32)

[注意]：如果我从我的示例代码中删除<HomeSearchView />，它工作正常...

任何提示将不胜感激......

你需要使用

import React from "react"

和

export default class HeroSearchView extends React.Component

这是因为JSX将您的文件转换为调用React.createElement的实际JS，并且因为您只从react中导入Component，所以找不到对React的引用

React没有在简单的React组件中定义（通用）

我正在使用15.0.1并使用React创建通用应用程序

我得到的React没有在以下组件中定义

import {Component} from "react";

export default class HeroSearchView extends Component{

    render() {

        return (
            <div className='row'>
                hello
            </div>
        );
    }
}

以下代码调用React组件

import React from "react";
import { connect } from 'react-redux'
import Coupon from '../../common/components/Coupon'
import { actions as miscActions } from '../../redux/modules/misc'
import HeroSearchView from './components/HeroSearchView'


const mapStateToProps = (state) => ({
    misc:state.misc
})

export class HomeView extends React.Component{
    render() {

        return (
            <div>
                <HeroSearchView  />
                <Coupon {...this.props} />
            </div>
        );
    }
}

export default connect(mapStateToProps, Object.assign({}, miscActions))(HomeView)

我现在有点挠头，以下信息意味着......

ReferenceError: React is not defined
    at HeroSearchView.render (HeroSearchView.jsx:8:13)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponentWithoutOwnerOrContext (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:679:34)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:699:32)
    at [object Object].wrapper [as _renderValidatedComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at [object Object].ReactCompositeComponentMixin.performInitialMount (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:284:30)
    at [object Object].ReactCompositeComponentMixin.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:237:21)
    at [object Object].wrapper [as mountComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at Object.ReactReconciler.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactReconciler.js:39:35)
    at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactMultiChild.js:203:44)
    at ReactDOMComponent.Mixin._createContentMarkup (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactDOMComponent.js:589:32)

[注意]：如果我从我的示例代码中删除<HomeSearchView />，它工作正常...

任何提示将不胜感激......

你需要使用

import React from "react"

和

export default class HeroSearchView extends React.Component

这是因为JSX将您的文件转换为调用React.createElement的实际JS，并且因为您只从react中导入Component，所以找不到对React的引用