有谁知道如何访问沙盒路径

import { common } from '@kit.AbilityKit'; 
import { BusinessError, request } from '@kit.BasicServicesKit'; 
import { fileUri } from '@kit.CoreFileKit'; 
 
// 获取应用文件路径 
let context = getContext(this) as common.UIAbilityContext; 
let filesDir = context.filesDir; 
 
@Entry 
@Component 
export struct Index11 { 
  @State message: string = 'Hello World'; 
  @State urlImage: ResourceStr = '' 
  build() { 
    Row() { 
      Column() { 
        Text(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
        Button('展示图片') 
          .onClick(() => { 
            try { 
              // 文件路径转成沙箱uri 
              let filePath = filesDir + '/pic.jpg' 
              this.urlImage = fileUri.getUriFromPath(filePath); 
            } catch (error) { 
              let err: BusinessError = error as BusinessError; 
              console.error(`Invoke downloadTask downloadFile failed, code is ${err.code}, message is ${err.message}`); 
            } 
          }) 
          .width('100%') 
        Image(this.urlImage) 
      } 
      .height('100%') 
    } 
  }}