HarmonyOS 鸿蒙Next 请提供一下发送请求上传图片的demo

demo仅供参考

import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { BusinessError, request } from '@kit.BasicServicesKit';
import fs from '@ohos.file.fs';
import { common } from '@kit.AbilityKit';
import picker from '@ohos.file.picker';
import { fileIo } from '@kit.CoreFileKit';
import { promptAction } from '@kit.ArkUI';

// 获取应用文件路径
let context = getContext(this) as common.UIAbilityContext;

async function savePhotoToGallery(context: common.UIAbilityContext) {
  let helper = photoAccessHelper.getPhotoAccessHelper(context);
  try {
    // onClick触发后5秒内通过createAsset接口创建图片文件，5秒后createAsset权限收回。
    let uri = await helper.createAsset(photoAccessHelper.PhotoType.IMAGE, 'jpg');
    // 使用uri打开文件，可以持续写入内容，写入过程不受时间限制
    let file = await fileIo.open(uri, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE);
    context.resourceManager.getMediaContent($r('app.media.app_icon').id, 0)
      .then(async value => {
        let media = value.buffer;
        // 写到媒体库文件中
        await fileIo.write(file.fd, media);
        await fileIo.close(file.fd);
        promptAction.showToast({ message: '已保存至相册！' });
      });
  }
  catch (error) {
    const err: BusinessError = error as BusinessError;
    console.error(`Failed to save photo. Code is ${err.code}, message is ${err.message}`);
  }
}

@Entry
@Component
struct IR240820142011118 {
  @State message: string = '点击上传图片';

  build() {
    Column() {
      SaveButton({
        text: SaveDescription.SAVE_TO_GALLERY,
        buttonType: ButtonType.Capsule,
        icon: SaveIconStyle.FULL_FILLED
      })
        .onClick(async (event: ClickEvent, result: SaveButtonOnClickResult) => {
        if (result === SaveButtonOnClickResult.SUCCESS) {
          const context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
          // 免去权限申请和权限请求等环节，获得临时授权，保存对应图片
          savePhotoToGallery(context);
        } else {
          promptAction.showToast({ message: '设置权限失败！' })
        }
      })
      Text('selectPicture')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .onClick(() => {
          this.selectPicture()
        })
      Text('选择视频')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .onClick(() => {
          this.selectVideo()
        })

    }
    .height('100%')
    .width('100%')
  }

  selectPicture() {
    try {
      let PhotoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
      PhotoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_VIDEO_TYPE;
      PhotoSelectOptions.maxSelectNumber = 2;
      let photoPicker = new photoAccessHelper.PhotoViewPicker();
      photoPicker.select(PhotoSelectOptions).then(PhotoSelectResult => {
        console.info('==SY==PhotoViewPicker.select successfully, PhotoSelectResult uri: ' + JSON.stringify(PhotoSelectResult.photoUris));
        this.uploadImage(PhotoSelectResult.photoUris[0])
      }).catch(err => {
        console.error(`PhotoViewPicker.select failed with err: ${err.code}, ${err.message}`);
      });
    } catch (error) {
      let err: BusinessError = error as BusinessError;
      console.error(`PhotoViewPicker failed with err: ${err.code}, ${err.message}`);
    }
  }

  selectVideo(){
    let PhotoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
    PhotoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.VIDEO_TYPE;
    PhotoSelectOptions.maxSelectNumber = 2;
    let photoPicker = new photoAccessHelper.PhotoViewPicker();
    photoPicker.select(PhotoSelectOptions).then(PhotoSelectResult => {
      console.info('PhotoViewPicker.select successfully, PhotoSelectResult uri: ' + JSON.stringify(PhotoSelectResult.photoUris));
      this.uploadImage(PhotoSelectResult.photoUris[0])
    }).catch(err => {
      console.error(`PhotoViewPicker.select failed with err: ${err.code}, ${err.message}`);
    });

  }

  uploadImage(uri: string) {
    const resFile = fs.openSync(uri, fs.OpenMode.READ_ONLY)
    let newPath = `${getContext().cacheDir}/${resFile.name}`;
    fs.copyFileSync(resFile.fd, newPath)
    console.info('uri = ' + uri, 'newPath = ' + newPath)
    let files: Array<request.File> = [
      { filename: resFile.name, name: 'file', uri: `internal://cache/${resFile.name}`, type: 'image/png' }
    ]
    let header = new Map<Object, string>()
    header['Content-Type'] = 'multipart/form-data'
    header['bucketId'] = 'GSP_PRIVATE'
    header['C-Tenancy-Id'] = '210000000000'
    header['C-App-Id'] = 'GSP_APP_001'
    header['C-Dynamic-Password-Foruser'] = ''
    let uploadConfig: request.UploadConfig = {
      url: 'http://10.234.196.126:8080/upLoadFile',
      header: header,
      method: 'POST',
      files: files,
      data: []
    };
    try {
      request.uploadFile(getContext(), uploadConfig).then(data => {
        console.error('uploadFile')
        console.error(`${JSON.stringify(data)}`)
        data.on('complete', taskStates => {
          console.info(`upload complete taskState: ${JSON.stringify(taskStates[0])}`);
        });
        data.on('headerReceive', headers => {
          console.info("upOnHeader headers:" + JSON.stringify(headers));
        })
        data.on('fail', taskStates => {
          for (let i = 0; i < taskStates.length; i++) {
            console.info("upOnFail taskState:" + JSON.stringify(taskStates[i]));
          }
        })
      }).catch(err => {
        console.error(`Failed to request the upload. Code: ${err.code}, message: ${err.message}`);
      });
    } catch (err) {
      console.error(`Failed to request the upload. err: ${JSON.stringify(err)}`);
    }
  }
}