【鸿蒙课堂】云开发必备能力:云存储快速上手教程

Cloud Foundation Kit（云开发服务）可以按需为应用提供云函数、云数据库、云存储、预加载等云端服务。而今天所讲的云存储便是其中重要的一个服务，它提供高效、经济的文件存储服务，为应用的文件上传、下载、保存和分享提供可靠支撑。

"requestPermissions": [  {    "name": "ohos.permission.INTERNET"  }

]

ohpm install @hw-agconnect/auth

GlobalContext.initContext(this.context)let file = this.context.resourceManager.getRawFileContentSync('agconnect-services.json');let json: string = buffer.from(file.buffer).toString();auth.init(this.context, json);

 let provider = auth.getAuthProvider(); // 在用户登录成功的情况下调用此方法获取authProvider    cloudCommon.init({      region: cloudCommon.CloudRegion.CHINA,      authProvider: provider,      functionOptions: { timeout: 10 * 1000 },      storageOptions: { mode: request.agent.Mode.BACKGROUND, network: request.agent.Network.ANY },      // databaseOptions: { schema: "schema.json", traceId: "traceId" }    })

Button('华为账号登录')  .onClick(()=>{    auth.signIn({      autoCreateUser: true,      "credentialInfo": {        "kind": 'hwid'      }    }).then(signInResult => {      hilog.info(0x0000, 'testTag', '%{public}s',  `signInHwid success. result: ${signInResult.getUser().getUid()}`);      hilog.info(0x0000, 'testTag', '%{public}s',  `signInHwid success. result: ${JSON.stringify(signInResult.getUser())}`);      hilog.info(0x0000, 'testTag', '%{public}s',  `signInHwid success. result: ${JSON.stringify(signInResult)}`);    })      .catch((error: BusinessError) => {        hilog.error(0x0000, 'testTag', '%{public}s', `signInHwid error, Code: ${error.code}, message: ${error.message}`);      })  })

let storageBucket: cloudStorage.StorageBucket = cloudStorage.bucket();

// 上传指定文件至云侧upload() {  this.selectPhoto().then((photoSelectResult: photoAccessHelper.PhotoSelectResult) => {    let fileUri = photoSelectResult.photoUris[0];    hilog.info(0x0000, 'testTag', `pick file ${fileUri}`);    let fileName = fileUri.split('/').pop() as string;    hilog.info(0x0000, 'testTag', `file name ${fileName}`);    let cacheFile = GlobalContext.getContext().cacheDir + '/' + fileName;    hilog.info(0x0000, 'testTag', `cacheFile ${cacheFile}`);    // 将选中文件copy至cache目录下    this.copyFile(fileUri, cacheFile);    // 上传至云存储默认实例    this.uploadFile(cacheFile, `screenshot/${fileName}`);  }).catch((err: BusinessError) => {    hilog.error(0x0000, 'testTag', `Failed to upload file, code: ${err.code}, message: ${err.message}`);  })}