记录初接触鸿蒙，遇到的一个问题，
需求是点击一个图片上传的+号图，访问本地图片，可以选择多张图片并上传。
下面是图片上传后的方法：
//选择图片并上传private async showPhotoPicker() {const maxImageCount = 3;const remainCount = maxImageCount - this.list.length;if (remainCount <= 0) {console.warn('最多只能上传 3 张图片');return;}const photoSelectOptions = new picker.PhotoSelectOptions();photoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE;photoSelectOptions.maxSelectNumber = remainCount;const photoPicker = new picker.PhotoViewPicker();const result = await photoPicker.select(photoSelectOptions);if (result && result.photoUris) {const context = getContext(this);const newList: string[] = [];const newFilesList: request.File[] = [];for (const uri of result.photoUris) {if (this.list.length + newList.length >= maxImageCount) {break;}try {const fileType = 'jpg'; // 可拓展为通过 URI 判断const fileName = `${Date.now()}_${Math.floor(Math.random() * 10000)}.${fileType}`;const copyFilePath = `${context.cacheDir}/${fileName}`;const file = fs.openSync(uri, fs.OpenMode.READ_ONLY);fs.copyFileSync(file.fd, copyFilePath);fs.closeSync(file.fd);newList.push(uri); // 保存原图路径用于本地预览newFilesList.push({filename: fileName,type: fileType,name: 'img',uri: `internal://cache/${fileName}`});} catch (error) {console.error('图片拷贝失败:', error);}}// 合并已有和新选的，最多保留3个this.list = [...this.list, ...newList].slice(0, maxImageCount);this.filesList = [...this.filesList, ...newFilesList].slice(0, maxImageCount);}}private async handleSubmit() {if (this.filesList.length > 0) {try {console.log('filesList', json.stringify(this.filesList))const context = getContext(this);this.imageList = [];const filesArray = Array.from(this.filesList);const uploader = await request.uploadFile(context, {url: '你的上传文件接口',method: 'post',header: {'Content-Type': 'multipart/form-data'},files: filesArray,data: []});uploader.on('progress', (uploaded: number, total: number) => {console.log(`上传进度: ${uploaded}/${total}`);});uploader.on('fail', (err: object) => {console.error('上传失败:', JSON.stringify(err));});uploader.on('headerReceive', (res: object) => {try {const resBody = JSON.parse(res['body'] ?? '{}') as uploadDataClass;console.log('上传成功，返回内容:', resBody);if (resBody && resBody.status === '1' && Array.isArray(resBody.data)) {const newImageList = resBody.data.map((item) => {return {url: item.url} as UploadFileDtoClass;});this.imageList = [...this.imageList, ...newImageList];} else {console.warn('上传接口返回格式不符合预期:', resBody);}} catch (err) {console.error('解析上传结果失败:', err);}});uploader.on('complete', (taskStates: Array<request.TaskState>) => {submitFeedback({'imgurls': this.imageList.map(item => item.url).join(','),其他数据}).then(res => {})})} catch (err) {console.error('上传过程失败:', err);}}}这是调用：
Image($r('app.media.xxx')).width('30%').height('auto').backgroundColor('#EEEEEE').borderRadius(4).onClick(() => {this.showPhotoPicker()})
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