如何从一页路由到另一页? [英] How to route from one page to another?

问题描述

如果我的 http 响应成功到新页面(即登录页面)，我将尝试路由该页面.我已经编写了用于处理 http 请求及其工作正常并返回响应的代码，如果我的响应成功或登录成功，即 true 那么我想移动到我的下一页，即我的组件 <Loading/> 带有一些参数，如果我的响应失败，那么它应该在同一页面上

基本上我在尝试当我点击登录按钮时它应该发送一个 http 请求，如果请求返回一个响应然后它应该切换到另一个页面，否则它应该在同一页面上

const Login = () =>{const [userName , setUserName] = useState("")const [userPassword , setUserPassword] = useState("")const handleUsernameInput = (事件) =>{setUserName(event.target.value);console.log("输入的用户名")}const handlePasswordInput = (事件) =>{setUserPassword(event.target.value);console.log("输入密码")}const [httpData, apiMethod] = useHttpPOSTHandlerdotthen()const handleSubmit = () =>{apiMethod({url: 'url' , data: { "password": userPassword, "username": userName }})设置用户名("")设置用户密码(")下一页();}const nextPage = () =>{如果(httpData){return <Redirect to={{ pathname: '/landing', key: httpData.key}}/>}别的{return <Redirect to={{ pathname: '/' }}/>}}返回 (<div className = "登录页面"><表格><Form.Control size = "sm"类型=文本"占位符=用户名"值 = {用户名}onChange = {event =>处理用户名输入(事件)}/><Form.Control size = "sm"类型=密码"占位符=密码"值 = {用户密码}onChange = {event =>句柄密码输入(事件)}/><按钮大小=sm"变体=成功"onClick = {handleSubmit}>登录</表格>

);};导出默认登录；

解决方案

离你不远了，你可以渲染Redirect 组件在使用 React Router 时执行从一个页面到另一个页面的 HTTP 重定向，例如

if (httpData) return ;//否则渲染登录页面

然后在Landing里面，你可以通过this.props.location.state.key访问key.

I was trying to route the page if my http response is successful to the new page i.e. landing page. I have written code for handling http request and its working fine and returning response, if my response is successfull or the login is successful i.e. true then i want to move to my next page i.e my component <Loading /> with some parameter if my response fails then it should be on the samepage

Basically i was trying when i click on login button it should send a http request if the request return a response then it should switch over to another page else it should be on the same page

const Login = () => {

    const [userName , setUserName] = useState("")
    const [userPassword , setUserPassword] = useState("")


    const handleUsernameInput = (event) => {
        setUserName(event.target.value);
        console.log("username entered")
    }

    const handlePasswordInput = (event) => {
        setUserPassword(event.target.value);
        console.log("password entered")
    }

    const [httpData, apiMethod] = useHttpPOSTHandlerdotthen()

    const handleSubmit = () => {
        apiMethod({url: 'url' , data: { "password": userPassword, "username": userName }})
        setUserName("")
        setUserPassword("")
        nextPage();
    }

    const nextPage = () => {
        if (httpData) {
        return <Redirect to={{ pathname: '/landing', key: httpData.key}} />
        }
        else{
            return <Redirect to={{ pathname: '/' }} /> 
        }
    }

    return (
        <div className = "login-page">
            <Form>
                <Form.Control size = "sm" 
                  type="text" 
                  placeholder="Username" 
                  value = {userName}
                  onChange = {event => handleUsernameInput(event)} 
                  />
                <Form.Control size = "sm" 
                     type="password" 
                     placeholder="Password" 
                     value = {userPassword}
                     onChange = {event => handlePasswordInput(event)} 
                     />
                <Button size = "sm" variant="success" 
                onClick = {handleSubmit}>Login</Button>
            </Form>
        </div>
    );
};

export default Login;

解决方案

You aren't far away, you can render the Redirect component to perform a HTTP redirect from one page to another when using React Router e.g.

if (httpData) return <Redirect to={{ pathname: '/landing', state: { key: httpData.key } }} />;

// render the login page otherwise

Then inside Landing, you can access the key via this.props.location.state.key.

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