Javascript ReactJS Axios使用Multer传递数据并上传图像
您好,我正在用ReactJS制作一份注册表。注册表中有名字、姓氏、电子邮件、密码、生日和上传图像等字段。我设法将图像上传到服务器上,但是我不能添加其他字段firstname、lastname、email、password和birthday,它有一个非法参数错误:未定义,string,我可以知道我做错了什么吗?多谢各位 ReactJS提交事件Javascript ReactJS Axios使用Multer传递数据并上传图像,javascript,reactjs,Javascript,Reactjs,您好,我正在用ReactJS制作一份注册表。注册表中有名字、姓氏、电子邮件、密码、生日和上传图像等字段。我设法将图像上传到服务器上,但是我不能添加其他字段firstname、lastname、email、password和birthday,它有一个非法参数错误:未定义,string,我可以知道我做错了什么吗?多谢各位 ReactJS提交事件 import React, { Component } from "react"; import { Link } from "react-router-d
import React, { Component } from "react";
import { Link } from "react-router-dom";
import DatePicker from "react-datepicker";
import moment from "moment";
import axios from "axios";
class Register extends Component {
constructor(props) {
super(props);
this.state = {
startDate: moment(),
firstname: "",
lastname: "",
email: "",
password: "",
dateofbirth: "",
receipt: "",
description: ""
};
this.handleChange = this.handleChange.bind(this);
this.onChange = this.onChange.bind(this);
this.onSubmit = this.onSubmit.bind(this);
this.fileSelectHandler = this.fileSelectHandler.bind(this);
}
handleChange(date) {
this.setState({
startDate: date
});
}
fileSelectHandler = event => {
this.setState({
receipt: event.target.files[0]
});
};
onChange(e, date) {
switch (e.target.name) {
case "receipt":
this.setState({ receipt: e.target.files[0] });
break;
default:
this.setState({ [e.target.name]: e.target.value });
}
e.preventDefault();
}
onSubmit(e) {
e.preventDefault();
const { description, receipt } = this.state;
const bodyFormData = new FormData();
bodyFormData.append("receipt", receipt);
bodyFormData.append("description", description);
bodyFormData.append("firstname", this.state.firstname);
bodyFormData.append("lastname", this.state.lastname);
bodyFormData.append("password", this.state.password);
bodyFormData.append("email", this.state.email);
const newUser = {
firstname: this.state.firstname,
lastname: this.state.lastname,
email: this.state.email,
password: this.state.password,
dateofbirth: document.getElementById("date").value
};
axios
.post("/api/users/register", bodyFormData, newUser, {
headers: {
accept: "application/json",
"Accept-Language": "en-US,en;q=0.8"
}
})
.then(function(res) {
console.log(res.data);
})
.catch(err => console.log(err));
console.log(bodyFormData);
}
render() {
return (
<div className="container_child signup_container">
<div className="signup_thumbnail">
<div className="thumbnail__content">
<h1 className="heading-primary">this is overlay with image</h1>
<h2 className="heading-secondary">
this is overlay with imagessss
</h2>
</div>
<div className="signup__overlay" />
</div>
<div className="container_child signup_form">
<form onSubmit={this.onSubmit} encType="multipart/form-data">
<div className="form-group">
<label htmlFor="username">Firstname</label>
<input
className="form-control"
type="text"
name="firstname"
id="firstname"
placeholder="Juan"
value={this.state.firstname}
onChange={this.onChange}
/>
</div>
<div className="form-group">
<label htmlFor="lastname">Last Name</label>
<input
className="form-control"
type="text"
name="lastname"
id="last-name"
placeholder="Dela Cruz"
value={this.state.lastname}
onChange={this.onChange}
/>
</div>
<div className="form-group">
<label htmlFor="prcid">Email</label>
<input
className="form-control"
type="email"
name="email"
id="email"
placeholder="juan@gmail.com"
value={this.state.email}
onChange={this.onChange}
/>
</div>
<div className="form-group">
<label htmlFor="prcid">Password</label>
<input
className="form-control"
type="password"
name="password"
id="password"
value={this.state.password}
onChange={this.onChange}
/>
</div>
<div className="form-group">
<label htmlFor="prcid">Birthday:</label>
<DatePicker
id="date"
selected={this.state.startDate}
onChange={this.handleChange}
/>;
</div>
<div className="form-group">
<div
className="mdl-textfield mdl-js-textfield mdl-textfield--file is-upgraded"
data-upgraded=",MaterialTextfield"
>
<input
className="mdl-textfield__input"
placeholder="File"
type="text"
id="uploadFile"
name="description"
value={this.state.description}
onChange={this.onChange}
//readonly="true"
/>
<div className="">
<input
type="file"
ref="files"
id="uploadBtn"
name="receipt"
onChange={this.onChange}
/>
</div>
{/* // <Dropzone onDrop={this.onDrop}>
// <div>Try dropping some files here, or click to select files to upload.</div>
// </Dropzone> */}
</div>
</div>
<div className="m-t-lg">
<ul className="list-inline">
<li>
<input
className="btn btn--form"
type="submit"
value="Register"
/>
</li>
<li>
<Link to="/login">I am already a member</Link>
</li>
</ul>
</div>
</form>
</div>
</div>
);
}
}
export default Register;
import React,{Component}来自“React”;
从“react router dom”导入{Link};
从“反应日期选择器”导入日期选择器;
从“时刻”中导入时刻;
从“axios”导入axios;
类寄存器扩展组件{
建造师(道具){
超级(道具);
此.state={
起始日期:力矩(),
名字:“,
姓氏:“,
电邮:“,
密码:“”,
出生日期:“,
收据:“,
说明:“”
};
this.handleChange=this.handleChange.bind(this);
this.onChange=this.onChange.bind(this);
this.onSubmit=this.onSubmit.bind(this);
this.fileSelectHandler=this.fileSelectHandler.bind(this);
}
手册更改(日期){
这是我的国家({
开始日期:日期
});
}
fileSelectHandler=event=>{
这是我的国家({
接收:event.target.files[0]
});
};
一次变更(e,日期){
开关(如target.name){
“收据”一案:
this.setState({receive:e.target.files[0]});
打破
违约:
this.setState({[e.target.name]:e.target.value});
}
e、 预防默认值();
}
提交(e){
e、 预防默认值();
const{description,receive}=this.state;
const bodyFormData=新FormData();
bodyFormData.append(“收据”,收据);
bodyFormData.append(“说明”,说明);
bodyFormData.append(“firstname”,this.state.firstname);
bodyFormData.append(“lastname”,this.state.lastname);
bodyFormData.append(“密码”,this.state.password);
bodyFormData.append(“email”,this.state.email);
常量newUser={
名字:this.state.firstname,
lastname:this.state.lastname,
电子邮件:this.state.email,
密码:this.state.password,
出生日期:document.getElementById(“日期”).value
};
axios
.post(“/api/users/register”),bodyFormData,newUser{
标题:{
接受:“应用程序/json”,
“接受语言”:“en-US,en;q=0.8”
}
})
.然后(功能(res){
console.log(res.data);
})
.catch(err=>console.log(err));
console.log(bodyFormData);
}
render(){
返回(
这是用图像覆盖的
这是与ImageSSS的叠加
名字
姓
电子邮件
密码
生日:
;
{/* //
//尝试在此处删除一些文件,或单击以选择要上载的文件。
// */}
-
-
我已经是会员了
);
}
}
导出默认寄存器;
您正在使用document.getElementById获取日期的值,
为什么不试试使用这个.state.startDate
由于react DOM是虚拟的,而不是真实的DOM,因此通过document.getElementById获得的值将为null
const newUser = {
firstname: this.state.firstname,
lastname: this.state.lastname,
email: this.state.email,
password: this.state.password,
dateofbirth: this.state.startDate
};
您正在使用document.getElementById获取日期的值, 为什么不试试使用这个.state.startDate 由于react DOM是虚拟的,而不是真实的DOM,因此通过document.getElementById获得的值将为null
const newUser = {
firstname: this.state.firstname,
lastname: this.state.lastname,
email: this.state.email,
password: this.state.password,
dateofbirth: this.state.startDate
};
这可能对你有帮助
用表单数据附加其他字段,这对我很有用
import React,{Component}来自'React';
导入“/test.css”;
导入'font-awesome/css/font-awesome.min.css';
从“./页眉/页眉”导入页眉;
从“./侧边栏/侧边栏”导入侧边栏;
从“axios/index”导入axios;
类AddTest扩展组件{
构造函数(){
超级();
这个州={
类别数据:[],
课程数据:[],
类别:“”,
课程:'',
testFile:null,
类别:“,
课程:'',
testFileE:“”,
错误状态:“”
};
this.handleFile=this.handleFile.bind(this);
this.handleCat=this.handleCat.bind(this);
this.handleCourse=this.handleCourse.bind(this);
this.handleSubmit=this.handleSubmit.bind(this);
}
handleCat(e){
e、 预防默认值();
this.setState({category:e.target.value});
this.setState({ErrorStatus:''});
this.setState({categoryE:'});
设res=this.menu.value;
axios({
方法:“get”,
网址:'http://localhost:7777/api/getCourse/title/“+res,
})
。然后((响应)=>{
this.setState({courseData:response.data});
})
.catch((e)=>
{
this.setState({success:'Alert:Something gours error');
});
}
手工课(东){
设cour=this.course.value;
this.setState({course:e.target.value});
this.setState({courseE:'});
}
手持文件(e){
this.setState({testFile:e.target.files[0]});
this.setState({testFileE:''});
}
验证=()=>{
假设isError=false;