我的代码正常工作,但是当我尝试从后端获取数据时,我收到一个错误“ 400错误请求”,不知道出了什么问题。请弄清楚我的问题。
// API == http:// localhost:8000 / api /
index.js
import {API} from '../backend';
import axios from 'axios';
export const getdata = () => {
return () => {
axios.post(`${API}addtodo`)
.then(res => {
console.log(res)
})
.catch(err =>{
console.log(err);
})
}
}
我在这里共享执行添加操作的实际代码 Todoform.js
import React,{useState, useEffect} from 'react'
import '../App.css'
import {
FormGroup,
Input,
Button,
Form,
InputGroup,
InputGroupAddon
} from 'reactstrap';
import {v4} from 'uuid';
import 'bootstrap/dist/css/bootstrap.min.css';
import {getdata, AddTodo} from '../Auth'
//redux
import {connect, useDispatch} from 'react-redux'
import {addTodo} from '../Action/todo';
const TodoForm = ({addTodo}) => {
const [title,setTitle] = useState('')
const dispatch = useDispatch();
useEffect(() => {
dispatch(getdata())
}, []);
return(
<Form>
<FormGroup>
<InputGroup>
<Input
type='text'
name='todo'
id='todo'
placeholder='Your next Todo'
value={title}
onChange={e => setTitle(e.target.value)}
/>
<InputGroupAddon addonType='prepend'>
<Button color='primary' onClick={()=>{
if(title === ''){
return alert('please add a todo')
}
const todo = {
title,
id:v4(),
}
addTodo(todo);
setTitle('');
}}>
ADD
</Button>
</InputGroupAddon>
</InputGroup>
</FormGroup>
</Form>
)
}
const mapStateToProps = state => ({
})
const mapDispatchToProps = dispatch =>({
addTodo : todo =>{
dispatch(addTodo(todo))
},
})
export default connect(mapStateToProps,mapDispatchToProps)(TodoForm)
$$$$$$$$$$$$$$后端$$$$$$$$$$$$$$$$$$$$$
todo.js /路由器
router.post('/addtodo',addTodo);
todo.js / controller
exports.addTodo = (req,res) =>{
const todo = new Todo(req.body)
todo.save((err,todo) => {
if(err || !todo){
return res.status(400).json({
err : 'NOT able to store data in database'
})
}
res.json(todo);
})
}
答案 0 :(得分:0)
将第二个参数传递给axios.post
函数很重要。
由于您正在使用getData
来获取数据,因此我对您的axios.post(`${API}addtodo`)
函数仍然感到困惑。尝试在此路线上更改路线。
如果您有意尝试在没有正文的情况下请求addTodo
路由,请添加{}
作为第二个参数:
axios.post(`${API}addTodo`, {})