HarmonyOS 鸿蒙Next 特殊字符名称的图片保存到相册失败

官方文档，对于包含特殊字符，title是不允许的， 参考：@ohos.file.photoAccessHelper (相册管理模块) https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V13/js-apis-photoaccesshelper-V13#photocreationconfig12

title参数规格为： 不应包含扩展名。 文件名字符串长度为1~255。 不允许出现非法字符，包括： . \ / : * " ’ ` < > | { } [ ]

从获取到图片路径上进行修改图片的title或者对title进行设置，不带有特殊字符的，或者使用默认的随机名称

import { BusinessError, request } from '@kit.BasicServicesKit';
import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { fileIo, fileUri, picker } from '@kit.CoreFileKit';
import promptAction from '[@ohos](/user/ohos).promptAction';
import { buffer } from '@kit.ArkTS';
import fs, { ReadOptions, WriteOptions } from '[@ohos](/user/ohos).file.fs';

let context = getContext(this);
let phAccessHelper = photoAccessHelper.getPhotoAccessHelper(context);

@Entry
@Component
struct PPage {
  @State src: string = 'https://syfrontweb.oss-cn-hangzhou.aliyuncs.com/wechat/small-mina/icon-account.png'
  @State base64: string = 'data:image/png;base64,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'
  @State isDownload:boolean = false
  @State total:number = 0
  @State value:number = 0

  build() {
    Column() {
      Image(this.base64).height(100).width(100)

      Button('保存').onClick(() =>{
        this.saveImage(this.base64)
      })

      if (this.isDownload){
        Progress({ value: this.value, total: this.total, type: ProgressType.Linear }).margin({top:20})
      }
    }
    .align(Alignment.BottomEnd).width('100%').height('100%').backgroundColor(Color.White)
  }
  saveBase64Image(base64Str:string) {
    //文件保存路径
    let uri = '';
    try {
      let PhotoSaveOptions = new picker.PhotoSaveOptions();
      //保存图片默认名称
      PhotoSaveOptions.newFileNames = ['123qwe~!@#$%^&()+}{,.\'][=-}{+)(&^%$#@!``,.;\'][=-.png'];
      let photoPicker = new picker.PhotoViewPicker();
      //调起系统的图片保存功能
      photoPicker.save(PhotoSaveOptions).then((PhotoSaveResult) => {
        uri = PhotoSaveResult[0];
        //获取图片的base64字符串
        let imageStr = base64Str.split(',')[1];
        //打开文件
        let file = fs.openSync(uri, fs.OpenMode.READ_WRITE);
        //base64字符串转成buffer
        const decodeBuffer = buffer.from(imageStr, 'base64').buffer;
        //写入文件
        fs.writeSync(file.fd, decodeBuffer);
        //关闭文件
        fs.closeSync(file);
      }).catch((err: Error) => {
        console.error(err + '');
      }) } catch (e) {
      console.error(e);
    }
  }

  //保存图片
  async saveImage(imageURL: string) {
    try {
      let content = imageURL.split(',')[1]
      let dirPath: string = context.cacheDir;
      let fileName = 'test.jpg'
      fileIo.access(`${dirPath}/${fileName}`).then(async (result: boolean) => {
        if (result) {
          this.total = 0
          this.value = 0
          await fileIo.unlink(`${dirPath}/${fileName}`)
        }
      })
      this.writeBufferToFile(dirPath,fileName,buffer.from(content, 'base64').buffer)
      let uri = fileUri.getUriFromPath(`${dirPath}/${fileName}`);
      let srcFileUris: Array<string> = [
        uri// 实际场景请使用真实的uri
      ];
      let photoCreationConfigs: Array<photoAccessHelper.PhotoCreationConfig> = [
        {
          title: '=======``', // 可选 设置或者使用默认的随机名称
          fileNameExtension: 'png',
          photoType: photoAccessHelper.PhotoType.IMAGE,
          subtype: photoAccessHelper.PhotoSubtype.DEFAULT, // 可选
        }
      ];
      let desFileUris: Array<string> = await phAccessHelper.showAssetsCreationDialog(srcFileUris, photoCreationConfigs);
      if (desFileUris.length > 0) {
        for (let index = 0; index < desFileUris.length; index++) {
          this.copyFileContentTo(srcFileUris[0], desFileUris[index])
        }
      }

    } catch (err) {
      console.error('showAssetsCreationDialog failed, errCode is ' + err.code + ', errMsg is ' + err.message);
    }
  }
  writeBufferToFile(dirPath: string, fileName: string, buf: ArrayBuffer) {
    if (!fs.accessSync(dirPath)) {
      // 如果文件夹不存在，则先创建文件夹
      fs.mkdirSync(dirPath)
    }

    let file = fs.openSync(`${dirPath}/${fileName}`, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE)
    fs.writeSync(file.fd, buf)
    fs.closeSync(file)
  }
  copyFileContentTo(srcFilePath: string, destFilePath: string) {
    let srcFile = fs.openSync(srcFilePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE)
    let destFile = fs.openSync(destFilePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE)

    // 读取源文件内容并写入至目的文件
    let bufSize = 4096;
    let readSize = 0;
    let buf = new ArrayBuffer(bufSize);
    let readOptions: ReadOptions = {
      offset: readSize,
      length: bufSize
    };
    let readLen = fs.readSync(srcFile.fd, buf, readOptions);
    while (readLen > 0) {
      readSize += readLen;
      let writeOptions: WriteOptions = {
        length: readLen
      };
      fs.writeSync(destFile.fd, buf, writeOptions);
      readOptions.offset = readSize;
      readLen = fs.readSync(srcFile.fd, buf, readOptions);
    }
    // 关闭文件
    fs.closeSync(srcFile);
    fs.closeSync(destFile);
  }
}