Javascript 如何在每次刷新页面时加载用户?
如何为此制作相关的asp.net控制器? 我还向App.js添加了“加载用户”功能。我想要的是在每次刷新页面时加载用户。登录功能工作正常,但刷新页面后,身份验证将再次为空Javascript 如何在每次刷新页面时加载用户?,javascript,c#,node.js,asp.net,reactjs,Javascript,C#,Node.js,Asp.net,Reactjs,如何为此制作相关的asp.net控制器? 我还向App.js添加了“加载用户”功能。我想要的是在每次刷新页面时加载用户。登录功能工作正常,但刷新页面后,身份验证将再次为空 "export const loadUser = () => async (dispatch) => { if (localStorage.token) { setAuthToken(localStorage.token); } try { const res = await
"export const loadUser = () => async (dispatch) => {
if (localStorage.token) {
setAuthToken(localStorage.token);
}
try {
const res = await axios.get('https://localhost:5001/api/auth/user');
dispatch({
type: USER_LOADED,
payload: res.data,
});
} catch (err) {
dispatch({
type: AUTH_ERROR,
});
}
};"
这是登录页面
import React, { useState } from 'react';
import Avatar from '@material-ui/core/Avatar';
import Button from '@material-ui/core/Button';
import TextField from '@material-ui/core/TextField';
import FormControlLabel from '@material-ui/core/FormControlLabel';
import Checkbox from '@material-ui/core/Checkbox';
import Link from '@material-ui/core/Link';
import Paper from '@material-ui/core/Paper';
import Box from '@material-ui/core/Box';
import Grid from '@material-ui/core/Grid';
import LockOutlinedIcon from '@material-ui/icons/LockOutlined';
import Typography from '@material-ui/core/Typography';
import { makeStyles } from '@material-ui/core/styles';
import { pink } from '@material-ui/core/colors';
import { connect } from 'react-redux';
import { setAlert } from '../../actions/alert';
import PropTypes from 'prop-types';
import {login} from '../../actions/auth'
import { Redirect } from 'react-router-dom'
function Copyright() {
return (
<Typography variant="body2" color="textSecondary" align="center">
{'Copyright © '}
<Link color="primary" href="./">
NoQueue Website
</Link>{' '}
{new Date().getFullYear()}
{'.'}
</Typography>
);
}
const useStyles = makeStyles((theme) => ({
root: {
height: '100vh',
},
image: {
backgroundImage: 'url(https://invention.si.edu/sites/default/files/styles/story_banner_image/public/blog-guest-fox-susannah-2017-03-09-shutterstock_189632216-banner-edit.jpg?itok=eNxGJoO4)',
backgroundSize: 'cover',
backgroundPosition: 'center',
},
paper: {
margin: theme.spacing(8, 4),
display: 'flex',
flexDirection:'column',
alignItems: 'center',
},
avatar: {
margin: theme.spacing(1),
backgroundColor: pink.A700,
},
form: {
width: '100%',
marginTop: theme.spacing(2),
},
submit: {
margin: theme.spacing(3,0,2),
},
}));
const SignIn = ({setAlert,login,isAuthenticated,user}) => {
const [formData, setFormData] = useState({
email:"",
password:"",
})
const{email,password}=formData;
const onChange=e=>setFormData(
{
...formData, [e.target.name]:e.target.value
}
)
const onSubmit=async e=>{
e.preventDefault();
if (email && password) {
login(email,password)
}
else{
setAlert('Please fill all the fileds','warning');
}
}
const classes = useStyles();
if(isAuthenticated){
//if(user.role === 'User')
//return <Redirect to="/index"/>
//else if(
//user.role ==='Admin'
//)
return <Redirect to="/business"/>
}
return (
<Grid container component="main" className={classes.root}>
<Grid item xs={false} sm={4} md={7} className={classes.image} />
<Grid item xs={12} sm={8} md={5} component={Paper} square>
<div className={classes.paper}>
<Avatar className={classes.avatar}>
<LockOutlinedIcon />
</Avatar>
<Typography component="h1" variant="h5">
Sign in
</Typography>
<form onSubmit = { e=>onSubmit(e)} className={classes.form} noValidate>
<TextField
onChange={e=>onChange(e)}
variant="outlined"
margin="normal"
required
fullWidth
id="email"
label="Email Address"
name="email"
value={email}
/>
<TextField
onChange={e=>onChange(e)}
variant="outlined"
margin="normal"
required
fullWidth
name="password"
label="Password"
type="password"
id="password"
value={password}
/>
<FormControlLabel
control={<Checkbox value="remember" color="primary" />}
label="Remember me"
/>
<Button
type="submit"
fullWidth
variant="contained"
color="Primary"
className={classes.submit}
>
Sign In
</Button>
<Grid container>
<Grid item xs>
<Link href="forgotpassword" variant="body2">
Forgot password?
</Link>
</Grid>
<Grid item>
<Link href="signup" variant="body2">
{"Not a member? Sign Up"}
</Link>
</Grid>
</Grid>
<Box mt={5}>
<Copyright />
</Box>
</form>
</div>
</Grid>
</Grid>
);
}
SignIn.propTypes={
login:PropTypes.func.isRequired,
setAlert:PropTypes.func.isRequired,
isAuthenticated:PropTypes.bool,
user: PropTypes.object.isRequired,
};
const mapStateToProps=state=>({
isAuthenticated:state.auth.isAuthenticated,
user: state.auth.user,
})
export default connect(mapStateToProps,{login,setAlert})(SignIn);
import React,{useState}来自“React”;
从“@material ui/core/Avatar”导入化身;
从“@material ui/core/Button”导入按钮;
从“@material ui/core/TextField”导入TextField;
从“@material ui/core/FormControlLabel”导入FormControlLabel;
从“@material ui/core/Checkbox”导入复选框;
从“@material ui/core/Link”导入链接;
从“@material ui/core/Paper”导入纸张;
从“@material ui/core/Box”导入框;
从“@material ui/core/Grid”导入网格;
从“@material ui/icons/LockOutlinedIcon”导入LockOutlinedIcon;
从“@material ui/core/Typography”导入排版;
从'@material ui/core/styles'导入{makeStyles};
从'@material ui/core/colors'导入{pink};
从'react redux'导入{connect};
从“../../actions/alert”导入{setAlert};
从“道具类型”导入道具类型;
从“../../actions/auth”导入{login}
从“react router dom”导入{Redirect}
函数版权(){
返回(
{'Copyright}
NoQueue网站
{' '}
{新日期().getFullYear()}
{'.'}
);
}
const useStyles=makeStyles((主题)=>({
根目录:{
高度:“100vh”,
},
图片:{
背景图片:“url”(https://invention.si.edu/sites/default/files/styles/story_banner_image/public/blog-guest-fox-susannah-2017-03-09-shutterstock_189632216-banner-edit.jpg?itok=eNxGJoO4)',
背景尺寸:'封面',
背景位置:"中锋",,
},
论文:{
边距:主题。间距(8,4),
显示:“flex”,
flexDirection:“列”,
对齐项目:“居中”,
},
化身:{
边距:主题。间距(1),
背景颜色:粉红色.A700,
},
表格:{
宽度:“100%”,
marginTop:主题。间距(2),
},
提交:{
边距:主题。间距(3,0,2),
},
}));
const SignIn=({setAlert,login,isAuthenticated,user})=>{
常量[formData,setFormData]=useState({
电邮:“,
密码:“”,
})
const{email,password}=formData;
const onChange=e=>setFormData(
{
…formData[e.target.name]:e.target.value
}
)
const onSubmit=async e=>{
e、 预防默认值();
如果(电子邮件和密码){
登录(电子邮件、密码)
}
否则{
setAlert('请填写所有文件','警告');
}
}
const classes=useStyles();
如果(未经验证){
//如果(user.role==='user')
//返回
//否则如果(
//user.role==='Admin'
//)
返回
}
返回(
登录
onSubmit(e)}className={classes.form}noValidate>
onChange(e)}
variant=“概述”
margin=“正常”
必修的
全宽
id=“电子邮件”
label=“电子邮件地址”
name=“电子邮件”
值={email}
/>
onChange(e)}
variant=“概述”
margin=“正常”
必修的
全宽
name=“密码”
label=“密码”
type=“密码”
id=“密码”
值={password}
/>
登录
忘记密码了?
{“不是会员?注册”}
);
}
签名类型={
登录名:PropTypes.func.isRequired,
setAlert:PropTypes.func.isRequired,
已验证:PropTypes.bool,
用户:PropTypes.object.isRequired,
};
常量mapStateToProps=状态=>({
isAuthenticated:state.auth.isAuthenticated,
用户:state.auth.user,
})
导出默认连接(MapStateTops,{login,setAlert})(SignIn);
我认为在redux的初始状态下,您需要检查localStorage.token是否为null/过期,并将其设置回user。因此,每当您刷新页面时,用户da仍然可以加载我能够通过使用jwt_解码解决上述问题
if (localStorage.token) {
setAuthToken(localStorage.token);
var decoded = jwt_decode(localStorage.token);
}
try {
const res = await axios.get(`https://localhost:5001/api/auth/user/${decoded.Id}`);
dispatch({
type: USER_LOADED,
payload: res.data,
});
} catch (err) {
dispatch({
type: AUTH_ERROR,
});
}
};
看起来这个问题与
C
无关。请查看该标记。您不需要每次都从控制器加载用户。将身份验证数据存储到本地存储器,即cookie,然后检查该数据。如果你在成功登录后发布加载主页的代码,我将向你展示如何操作我已经添加了登录页面。