Javascript 无法读取属性';设置状态';在handleupload未定义的
我正在尝试使用antd创建带有文件上载的表单,但我无法使用handleupload函数,我有错误:Javascript 无法读取属性';设置状态';在handleupload未定义的,javascript,reactjs,antd,Javascript,Reactjs,Antd,我正在尝试使用antd创建带有文件上载的表单,但我无法使用handleupload函数,我有错误: Cannot read property 'setState' of undefined at handleupload (registertenantform.js:43) 代码如下: import React, { Component } from 'react'; import { Input, Upload , Icon, message} from 'antd'; import
Cannot read property 'setState' of undefined
at handleupload (registertenantform.js:43)
代码如下:
import React, { Component } from 'react';
import { Input, Upload , Icon, message} from 'antd';
import Form from '../../components/uielements/form';
import Checkbox from '../../components/uielements/checkbox';
import Button from '../../components/uielements/button';
import Notification from '../../components/notification';
import { adalApiFetch } from '../../adalConfig';
const FormItem = Form.Item;
class RegisterTenantForm extends Component {
constructor(props) {
super(props);
this.state = {TenantId: '', TenantUrl: '', CertificatePassword: '' };
this.handleChangeTenantUrl = this.handleChangeTenantUrl.bind(this);
this.handleChangeCertificatePassword = this.handleChangeCertificatePassword.bind(this);
this.handleChangeTenantId= this.handleChangeTenantId.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
};
handleChangeTenantUrl(event){
this.setState({TenantUrl: event.target.value});
}
handleChangeCertificatePassword(event){
this.setState({CertificatePassword: event.target.value});
}
handleChangeTenantId(event){
this.setState({TenantId: event.target.value});
}
beforeUpload(file) {
const isJPG = file.type === 'image/jpeg';
if (!isJPG) {
message.error('You can only upload JPG file!');
}
}
handleupload(info){
//let files = e.target.files;
if (info.file.status === 'uploading') {
this.setState({ loading: true });
return;
}
if (info.file.status === 'done') {
this.setState({ loading: false });
this.setState({ 'selectedFiles': info.file });
}
}
state = {
confirmDirty: false,
loading: false,
};
handleSubmit(e){
e.preventDefault();
this.props.form.validateFieldsAndScroll((err, values) => {
if (!err) {
/*Notification(
'success',
'Received values of form',
JSON.stringify(values)
);*/
let data = new FormData();
//Append files to form data
data.append("model", JSON.stringify({ "TenantId": this.state.TenantId, "TenantUrl": this.state.TenantUrl, "CertificatePassword": this.state.CertificatePassword }));
//data.append("model", {"TenantId": this.state.TenantId, "TenantUrl": this.state.TenantUrl, "TenantPassword": this.state.TenantPassword });
let files = this.state.selectedFiles;
for (let i = 0; i < files.length; i++) {
data.append("file", files[i], files[i].name);
}
const options = {
method: 'put',
body: data,
config: {
headers: {
'Content-Type': 'multipart/form-data'
}
}
};
adalApiFetch(fetch, "/Tenant", options)
.then(response => response.json())
.then(responseJson => {
if (!this.isCancelled) {
this.setState({ data: responseJson });
}
})
.catch(error => {
console.error(error);
});
}
});
}
render() {
const uploadButton = (
<div>
<Icon type={this.state.loading ? 'loading' : 'plus'} />
<div className="ant-upload-text">Upload</div>
</div>
);
const { getFieldDecorator } = this.props.form;
const formItemLayout = {
labelCol: {
xs: { span: 24 },
sm: { span: 6 },
},
wrapperCol: {
xs: { span: 24 },
sm: { span: 14 },
},
};
const tailFormItemLayout = {
wrapperCol: {
xs: {
span: 24,
offset: 0,
},
sm: {
span: 14,
offset: 6,
},
},
};
return (
<Form onSubmit={this.handleSubmit}>
<FormItem {...formItemLayout} label="Tenant Id" hasFeedback>
{getFieldDecorator('tenantid', {
rules: [
{
required: true,
message: 'Please input your tenant id',
},
],
})(<Input name="tenantid" id="tenantid" onChange={this.handleChangeTenantId}/>)}
</FormItem>
<FormItem {...formItemLayout} label="Certificate Password" hasFeedback>
{getFieldDecorator('certificatepassword', {
rules: [
{
required: true,
message: 'Please input your password!',
}
],
})(<Input type="certificatepassword" onChange={this.handleChangeCertificatePassword}/>)}
</FormItem>
<FormItem {...formItemLayout} label="Tenant admin url" hasFeedback>
{getFieldDecorator('tenantadminurl', {
rules: [
{
required: true,
message: 'Please input your tenant admin url!',
}
],
})(<Input type="tenantadminurl" onChange={this.handleChangeTenantUrl} />)}
</FormItem>
<FormItem {...tailFormItemLayout}>
<Upload onChange={this.handleupload} beforeUpload={this.beforeUpload}>
<Button>
<Icon type="upload" /> Click to Upload
</Button>
</Upload>
<Button type="primary" htmlType="submit">
Register tenant
</Button>
</FormItem>
</Form>
);
}
}
const WrappedRegisterTenantForm = Form.create()(RegisterTenantForm);
export default WrappedRegisterTenantForm;
import React,{Component}来自'React';
从“antd”导入{输入、上载、图标、消息};
从“../../components/uielements/Form”导入表单;
从“../../components/uielements/Checkbox”导入复选框;
从“../../components/uielements/Button”导入按钮;
从“../../components/Notification”导入通知;
从“../../adalConfig”导入{adalApiFetch};
const FormItem=表单项;
类RegisterTenantForm扩展组件{
建造师(道具){
超级(道具);
this.state={TenantId:'',TenantUrl:'',CertificatePassword:''};
this.handlechangetranturl=this.handlechangetranturl.bind(this);
this.handleChangeCertificatePassword=this.handleChangeCertificatePassword.bind(this);
this.handlechangetantid=this.handlechangetantid.bind(this);
this.handleSubmit=this.handleSubmit.bind(this);
};
handleChangeTenantUrl(事件){
this.setState({TenantUrl:event.target.value});
}
handleChangeCertificatePassword(事件){
this.setState({CertificatePassword:event.target.value});
}
handlechangetrantid(事件){
this.setState({TenantId:event.target.value});
}
上传前(文件){
const isJPG=file.type=='image/jpeg';
如果(!isJPG){
message.error('您只能上载JPG文件!');
}
}
handleupload(信息){
//让files=e.target.files;
如果(info.file.status===‘上传’){
this.setState({loading:true});
返回;
}
如果(info.file.status===“完成”){
this.setState({loading:false});
this.setState({'selectedFiles':info.file});
}
}
状态={
confirmDirty:false,
加载:false,
};
handleSubmit(e){
e、 预防默认值();
this.props.form.validateFieldsAndScroll((错误,值)=>{
如果(!err){
/*通知(
“成功”,
“形式的接收值”,
stringify(值)
);*/
let data=new FormData();
//将文件附加到表单数据
data.append(“model”,JSON.stringify({“TenantId”:this.state.TenantId,“tenantur”:this.state.tenantur,“CertificatePassword”:this.state.CertificatePassword}));
//data.append(“model”,{“TenantId”:this.state.TenantId,“tenantur”:this.state.tenantur,“TenantPassword”:this.state.TenantPassword});
让files=this.state.selectedFiles;
for(设i=0;iresponse.json())
.然后(responseJson=>{
如果(!this.isCancelled){
this.setState({data:responseJson});
}
})
.catch(错误=>{
控制台错误(error);
});
}
});
}
render(){
常量上载按钮=(
上传
);
const{getFieldDecorator}=this.props.form;
常量formItemLayout={
labelCol:{
xs:{span:24},
sm:{span:6},
},
包装纸:{
xs:{span:24},
sm:{span:14},
},
};
常量tailFormItemLayout={
包装纸:{
xs:{
跨度:24,
偏移量:0,
},
sm:{
跨度:14,
抵销:6,
},
},
};
返回(
{getFieldDecorator('tenantid'{
规则:[
{
要求:正确,
消息:“请输入您的租户id”,
},
],
})()}
{getFieldDecorator('certificatepassword'{
规则:[
{
要求:正确,
消息:“请输入您的密码!”,
}
],
})()}
{getFieldDecorator('tenatadmissal'{
规则:[
{
要求:正确,
消息:“请输入您的租户管理员url!”,
}
],
})()}
点击上传
登记承租人
);
}
}
const WrappedRegisterTenantForm=Form.create()(RegisterTenantForm);
导出默认WrappedRegisterEntertForm;
您没有绑定handleupload
功能。加上
this.handleupload = this.handleupload.bind(this)
在您的RegisterTenantForm
构造函数中
或
您可以使用如下箭头函数重写handleupload
函数:
handleupload = (info) => {
//let files = e.target.files;
if (info.file.status === 'uploading') {
this.setState({ loading: true });
return;
}
if (info.file.status === 'done') {
// btw you dont need two separated setState here, you can do
// it in one setState
this.setState({
'selectedFiles': info.file,
loading: false
});
}
}
您没有绑定
handleupload
函数。加上
this.handleupload = this.handleupload.bind(this)
在你的<
adalApiFetch(fetch, "/Tenant", options)
.then(response => response.json())
.then(responseJson => {
if (!that.isCancelled) {
that.setState({
data: responseJson
});
}
})
.catch(error => {
console.error(error);
});