antd 里面的Upload图片上传

àì夳堔傛蜴生んèń 2023-07-05 13:12 21阅读 0赞

[Antd 里面的Upload][Antd _Upload]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70][]

import React,{useState} from 'react';
    import { Upload, Icon, message,Spin } from 'antd';
    import  serviceApi from '@/utils/api';
    import {MessageTip} from '@/utils/tools.js'
    import './upload.css'
    // 上传单张图片
    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('仅支持JPG/PNG格式的图片');
        }
        const isLt2M = file.size / 1024 / 1024 < 2;
        if (!isLt2M) {
          message.error('图片大小不能超过 2MB!');
        }
        return isJpgOrPng && isLt2M;
    }
     
    const UploadAvatar = (props) =>{
    
        const [loading,setLoading] = useState(false)
        const [imageUrl,setImageUrl] = useState('')
        const handleChange = info => {
          if (info.file.status === 'uploading') {
            setLoading(true)
            return;
          }
          if (info.file.status === 'done') {
            getBase64(info.file.originFileObj, imageUrl =>{
              setLoading(false)
              if(info.file.response.success){
                const {module} = info.file.response   // 返回的图片地址
                props.childImg(module)   // 传给父级的
                setImageUrl(imageUrl)
                MessageTip('success','文件上传成功')
              }
            });
          }
        };
        const uploadButton = (
          <div>
            {
              loading?<Spin />:''
            }
            <div className="ant-upload-text">Upload</div>
          </div>
        );
          return (
            <Upload
              name="file"
              listType="picture-card"
              className="avatar-uploader"
              showUploadList={false}
              action={serviceApi.uploadFile}
              data={
       {type:1}}   // type 1图片  2试卷
              beforeUpload={beforeUpload}
              onChange={handleChange}
            >
              {imageUrl ? <img src={imageUrl} alt="avatar" style={
       { width: '100%' }} /> : uploadButton}
            </Upload>
          );
    }
    export default UploadAvatar;

[Antd _Upload]: https://ant.design/components/upload-cn/
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