React配置子路由的实现

1、组件First.js下有子组件：

import Admin from \'./Admin\'
import FormCom from \'./FormCom\'
import One from \'./One\'
import ButtonCom from \'./ButtonCom\'
import MenuCom from \'./MenuCom\'
import StepsCom from \'./StepsCom\'
import TabsCom from \'./TabsCom\'
import TableCom from \'./TableCom\'
import MessageCom from \'./MessageCom\'
import NotificationCom from \'./NotificationCom\'
import ProgressCom from \'./ProgressCom\'
import SpinCom from \'./SpinCom\'
import BadgeCom from \'./BadgeCom\'

First.js完整代码如下：

import React from \'react\'
import { Layout, Menu } from \'antd\';
import { UserOutlined, LaptopOutlined, NotificationOutlined } from \'@ant-design/icons\';
import { HashRouter, Route, Link } from \'react-router-dom\'
import Admin from \'./Admin\'
import FormCom from \'./FormCom\'
import One from \'./One\'
import ButtonCom from \'./ButtonCom\'
import MenuCom from \'./MenuCom\'
import StepsCom from \'./StepsCom\'
import TabsCom from \'./TabsCom\'
import TableCom from \'./TableCom\'
import MessageCom from \'./MessageCom\'
import NotificationCom from \'./NotificationCom\'
import ProgressCom from \'./ProgressCom\'
import SpinCom from \'./SpinCom\'
import BadgeCom from \'./BadgeCom\'
const { SubMenu } = Menu;
const { Header, Content, Sider } = Layout;

export default class First extends React.Component {
    constructor() {
        super();
    }

    //只展开当前父级菜单 begin
    rootSubmenuKeys = [\'sub1\', \'sub2\', \'sub3\'];

    state = {
        openKeys: [\'sub1\'],
    };

    onOpenChange = openKeys => {
        const latestOpenKey = openKeys.find(key => this.state.openKeys.indexOf(key) === -1);
        if (this.rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
            this.setState({ openKeys });
        } else {
            this.setState({
                openKeys: latestOpenKey ? [latestOpenKey] : [],
            });
        }
    };
    //只展开当前父级菜单 end

    render() {
        return (<div>
            <Layout>
                <HashRouter>
                    <Header className=\"header\" style={{ position: \'fixed\', zIndex: 1, width: \'100%\', paddingLeft: \'20px\'}}>
                        <div className=\"logo\" style={{fontSize: \'32px\', color: \'#ffffff\', fontWeight: \'bold\'}}>React App</div>
                        <Menu theme=\"dark\" mode=\"horizontal\" defaultSelectedKeys={[\'1\']}>
                            {/*<Menu.Item key=\"1\">nav 1</Menu.Item>
                            <Menu.Item key=\"2\">nav 2</Menu.Item>
                            <Menu.Item key=\"3\">nav 3</Menu.Item>*/}
                        </Menu>
                    </Header>
                    <Layout>
                        <Sider width={200} className=\"site-layout-background\" style={{
                            overflow: \'auto\',
                            height: \'100vh\',
                            position: \'fixed\',
                            left: 0,
                        }}>
                            <Menu
                                theme=\"dark\"
                                mode=\"inline\"
                                defaultSelectedKeys={[\'2\']}
                                defaultOpenKeys={[\'sub1\']}
                                style={{ height: \'100%\', paddingTop: \'60px\', borderRight: 0 }}
                                onOpenChange={this.onOpenChange}
                                openKeys={this.state.openKeys}
                            >
                                <SubMenu key=\"sub1\" icon={<UserOutlined />} title=\"subnav 1\">
                                    <Menu.Item key=\"1\"><Link to={`${this.props.match.path}/admin`}>admin</Link></Menu.Item>
                                    <Menu.Item key=\"2\"><Link to={`${this.props.match.path}/form`}>form</Link></Menu.Item>
                                    <Menu.Item key=\"3\"><Link to={`${this.props.match.path}/one`}>One</Link></Menu.Item>
                                    <Menu.Item key=\"4\"><Link to={`${this.props.match.path}/menu`}>Menu</Link></Menu.Item>
                                </SubMenu>
                                <SubMenu key=\"sub2\" icon={<LaptopOutlined />} title=\"subnav 2\">
                                    <Menu.Item key=\"5\"><Link to={`${this.props.match.path}/step`}>Step</Link></Menu.Item>
                                    <Menu.Item key=\"6\"><Link to={`${this.props.match.path}/tabs`}>Tabs</Link></Menu.Item>
                                    <Menu.Item key=\"7\"><Link to={`${this.props.match.path}/table`}>Table</Link></Menu.Item>
                                    <Menu.Item key=\"8\"><Link to={`${this.props.match.path}/message`}>Message</Link></Menu.Item>
                                </SubMenu>
                                <SubMenu key=\"sub3\" icon={<NotificationOutlined />} title=\"subnav 3\">
                                    <Menu.Item key=\"9\"><Link to={`${this.props.match.path}/notification`}>Notification</Link></Menu.Item>
                                    <Menu.Item key=\"10\"><Link to={`${this.props.match.path}/progress`}>ProgressCom</Link></Menu.Item>
                                    <Menu.Item key=\"11\"><Link to={`${this.props.match.path}/spin`}>Spin</Link></Menu.Item>
                                    <Menu.Item key=\"12\"><Link to={`${this.props.match.path}/badge`}>Badge</Link></Menu.Item>
                                    <Menu.Item key=\"13\"><Link to={`${this.props.match.path}/button`}>Button</Link></Menu.Item>
                                </SubMenu>
                            </Menu>
                        </Sider>
                        <Layout style={{ padding: \'84px 20px 20px\', marginLeft: 200}}>
                            <Content
                                className=\"site-layout-background\"
                                style={{
                                    padding: 24,
                                    margin: 0
                                }}
                            >
                                <Route path={`${this.props.match.path}/admin`} exact component={Admin}></Route>
                                <Route path={`${this.props.match.path}/form`} component={FormCom}></Route>
                                <Route path={`${this.props.match.path}/one`} component={One}></Route>
                                <Route path={`${this.props.match.path}/menu`} component={MenuCom}></Route>
                                <Route path={`${this.props.match.path}/step`} component={StepsCom}></Route>
                                <Route path={`${this.props.match.path}/tabs`} component={TabsCom}></Route>
                                <Route path={`${this.props.match.path}/table`} component={TableCom}></Route>
                                <Route path={`${this.props.match.path}/message`} component={MessageCom}></Route>
                                <Route path={`${this.props.match.path}/notification`} component={NotificationCom}></Route>
                                <Route path={`${this.props.match.path}/progress`} component={ProgressCom}></Route>
                                <Route path={`${this.props.match.path}/spin`} component={SpinCom}></Route>
                                <Route path={`${this.props.match.path}/badge`} component={BadgeCom}></Route>
                                <Route path={`${this.props.match.path}/button`} component={ButtonCom}></Route>
                            </Content>
                        </Layout>
                    </Layout>
                </HashRouter>
            </Layout>
        </div>)
    }
}

其中

${this.props.match.path}

是关键。

2、假设还有一个登录组件Login.js，代码如下：

import React from \'react\'
import { Button } from \'antd\';

export default class Login extends React.Component {
    constructor() {
        super();
    }

    redirectHandle = () => {
        console.log(\"aaa\");
        this.props.history.push(\"/home\");
    }

    render() {
        return (<Button type=\"primary\" onClick={()=>this.redirectHandle()}>Primary Button</Button>)
    }
}

假设React项目用的是React脚手架搭建，则在src目录下的App.js文件中设置路由：

  render() {
    return (<HashRouter>
      <Switch>
        <Route exact={true} path=\"/login\" component={Login} />
        <Route path=\"/home\" component={First} />
        <Redirect to=\'/login\' /> {/*/login和/home之外的路由直接跳转到/login*/}
      </Switch>
    </HashRouter>)
  }

App.js完整代码如下：

import React from \'react\';
import { notification } from \'antd\'
import { HashRouter, Route, Switch, Redirect } from \'react-router-dom\';
import First from \'./First\';
import Login from \'./Login\';
import \'./App.css\';

class App extends React.Component {
  constructor() {
    super();
    this.openNotificationWithIcon = type => {
      notification[type]({
        message: \'Notification Title\',
        description:
          \'This is the content of the notification. This is the content of the notification. This is the content of the notification.\',
      });
    }
  }

  clickHandle() {
    console.log(\"clicked!!!\");
  }

  render() {
    return (<HashRouter>
      <Switch>
        <Route exact={true} path=\"/login\" component={Login} /> {/**exact 防止混路由混合   如：输入127.xx.xx.xx/home 中有/login页面*/}
        <Route path=\"/home\" component={First} />
        <Redirect to=\'/login\' />
      </Switch>
    </HashRouter>)
  }
}

export default App;

项目目录结构如下：

项目预览效果如下：

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