【发布时间】:2020-07-28 03:25:40
【问题描述】:
我正在为 ant design file upload 使用我的反应项目,我在上传时遇到了一些冲突,我尝试仅验证上传 .xls 文件,但它不起作用。我将 png 更改为 xls 但无法正常工作有人知道如何正确操作吗?
代码在这里
function getBase64(img, callback) {
const reader = new FileReader();
reader.addEventListener('load', () => callback(reader.result));
reader.readAsDataURL(img);
}
function beforeUpload(file) {
const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png';
if (!isJpgOrPng) {
message.error('You can only upload JPG/PNG file!');
}
const isLt2M = file.size / 1024 / 1024 < 2;
if (!isLt2M) {
message.error('Image must smaller than 2MB!');
}
return isJpgOrPng && isLt2M;
}
class Avatar extends React.Component {
state = {
loading: false,
};
handleChange = info => {
if (info.file.status === 'uploading') {
this.setState({ loading: true });
return;
}
if (info.file.status === 'done') {
// Get this url from response in real world.
getBase64(info.file.originFileObj, imageUrl =>
this.setState({
imageUrl,
loading: false,
}),
);
}
};
render() {
const uploadButton = (
<div>
<Icon type={this.state.loading ? 'loading' : 'plus'} />
<div className="ant-upload-text">Upload</div>
</div>
);
const { imageUrl } = this.state;
return (
<Upload
name="avatar"
listType="picture-card"
className="avatar-uploader"
showUploadList={false}
action="https://www.mocky.io/v2/5cc8019d300000980a055e76"
beforeUpload={beforeUpload}
onChange={this.handleChange}
>
{imageUrl ? <img src={imageUrl} alt="avatar" style={{ width: '100%' }} /> : uploadButton}
</Upload>
);
}
}
谢谢
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