antd组件Upload上传 antd组件Upload实现自己上传的实现示例

//添加按钮的样式
const uploadButton = (
  <div>
  <Icon type="plus" />
  <div className="ant-upload-text">Upload</div>
  </div>
 );


<Upload
    //样式
    className={styles['override-ant-btn']}
    //陈列样式，现在是卡片式
    listType="picture-card"
    //再图片上传到页面后执行的函数，自定义让他不执行
    beforeUpload={() => false}
    //数据，即图片，是一个数组
    fileList={fileList}
    //当点击查看时调用（上图的那个眼睛）
    onPreview={this.handlePreview}
    //数据改变时调用
    onChange={this.handleChange}
   >
    //当不少于一张图时，不显示怎加图片的按钮。
    {fileList.length >= 1 ? null : uploadButton}
   </Upload>

 handlePreview = (file) => {
 this.setState({
  previewImage: file.url || file.thumbUrl,
  visible: true,
 });
 };


  <Modal visible={visible} footer={null} onCancel={this.handleCancel}>
    <img alt="加载" style={{ width: '100%',height: '100%' }} src={previewImage} />
  </Modal>

handleChange = ({ fileList }) => {
 this.setState({ fileList });
};

fileList: [{
   uid: 'id',
   name: '标题',
   //目前的状态
   status: 'done',
   //图片的url或者base64
   url: '',
   type: 'image/jpeg',
  }],

//通过前端原生XMLHttpRequest动态获取上传文件进度
doTransferFile = (file) => {
 let mySelf = this;
 let formData = new FormData();
 let url = "http://xxx:444/upload_file.php";
 let file = document.getElementById("chooseFile").files[0];
 console.log(file)
 
 formData.append("file",file);
 // console.log(modal);
 // console.log(formData);
 // return false;
 /* eslint-disable */
 $.ajax({ 
  url : url, 
  type : 'POST',
  enctype: 'multipart/form-data',
  data : formData, 
  // 告诉jQuery不要去处理发送的数据
  processData : false, 
  // 告诉jQuery不要去设置Content-Type请求头
  contentType : false,
  timeout : 60000,//设置超时时间
  beforeSend:function(){
   console.log("现在开始上传文件！");
 notification['info']({
 message: '提示',
 description: '现在开始上传文件！',
 });
  },
  xhr: function(){
 let myXhr = $.ajaxSettings.xhr();
 // console.log(myXhr)
 if(myXhr.upload){
 myXhr.upload.addEventListener('progress',function(e) {
  if (e.lengthComputable) {
  let percent = Math.floor((e.loaded/e.total)*100);
  // console.log(e.loaded)
  // console.log(e.total)
  console.log(percent)
  let upload = mySelf.state.upload;
  upload.progress.loaded = e.loaded;
  upload.progress.total = e.total;
  upload.progress.percentage = percent;
  mySelf.state.upload = upload;
 
  // console.log(info);
   mySelf.setState({
    upload: upload
   });
  }
 },false);
 
 myXhr.upload.addEventListener('load',function(e) {
  console.log('fish')
 },false);
 
 }
 return myXhr;
  },
  success : function(res) {
   console.log(res)
 
  }, 
  error : function(res) { 
 
  } 
 });
};