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 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) { 
 
 } 
 });
};