HarmonyOS 鸿蒙Next 相册图片上传问题

可以参考一下上传下载demo：https://gitee.com/harmonyos_samples/upload-and-down-load

也可以参考一下这个代码片段：

import request from '[@ohos](/user/ohos).request';
import picker from '[@ohos](/user/ohos).file.picker';
import fs, { ReadOptions } from '[@ohos](/user/ohos).file.fs';
import common from '[@ohos](/user/ohos).app.ability.common';


// 获取应用文件路径
let context = getContext(this) as common.UIAbilityContext;
let cacheDir = context.cacheDir;
[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index4 {
 private openPhotoPicker() {
   let photoPicker = new picker.PhotoViewPicker();
   photoPicker.select({
     MIMEType: picker.PhotoViewMIMETypes.IMAGE_TYPE,
     maxSelectNumber: 1
   }, (error, result) => {
     if (result) {
       result.photoUris.forEach((uri) => {
         let file = fs.openSync(uri, fs.OpenMode.CREATE);
         // 复制文件到缓存目录下
         fs.copyFileSync(file.fd, cacheDir + '/test.jpeg')
         this.uploadImage(['internal://cache/test.jpeg']);
       })
     }
   });
 }
 private uploadImage(paths: string[]) {
   let allFiles = Array<request.File>()
   let header = new Map<Object, string>();
   header.set('Content-Type', 'multipart/form-data');
   header.set('key2', 'value2');
   for (let i = 0; i <paths.length; i++) {
     allFiles[i] = {
       name: "image" + i + ".jpeg",
       filename: "image" + i + ".jpeg",
       uri: paths[i],
       type: "image"
     }
   }
   let data: Array<request.RequestData> = [{ name: 'name', value: 'value' }];
   let uploadConfig: request.UploadConfig = {
     url: 'http://XXX&#34',
     header: header,
     method: 'POST',
     files: allFiles,
     data: data
   }
   try {
     request.uploadFile(getContext(this), uploadConfig, (error, uploadTask) => {
       if(uploadTask) {
         uploadTask.on('progress', (uploadedSize: number, totalSize: number) => {
           console.log("progress, uploadedSize: " + uploadedSize + ", totalSize: " + totalSize)
         })
       } else {
         console.log("upload failure: " + error)
       }
     });
   } catch (error) {
     console.log("upload failure: " + error)
   }
 }
}

可以通过on('headerReceive')订阅上传任务HTTP响应事件responsehttps://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-request-V5#onheaderreceive7