HarmonyOS 如何实现在应用内清除应用缓存数据？

import fs from ‘@ohos.file.fs’;  
let cacheDir = context.cacheDir;  
@Entry  
@Component  
struct Clear_cache {  
  clearCache() {  
    // let cacheDir = getContext(this).cacheDir  
    // fs.rmdirSync(cacheDir)  
    // console.log(“delete !!!”)  
  
    fs.listFile(cacheDir).then((filenames) => {  
      for (let i = 0;i < filenames.length; i++) {  
        // let dirPath = cacheDir+filenames[i]  
        let dirPath = ${cacheDir}/${filenames[i]}  
        // 判断是否文件夹  
        let isDirectory  
        try {  
          isDirectory = fs.statSync(dirPath).isDirectory()  
        }  
        catch (e) {  
          console.log(e)  
        }  
  
        if (isDirectory) {  
          fs.rmdirSync(dirPath)  
        } else {  
          fs.unlink(dirPath).then(() => {  
            console.info(“remove file succeed”);  
          }).catch((err) => {  
            console.info("remove file failed with error message: " + err.message + ", error code: " + err.code);  
          });  
        }  
      }  
  
    })  
  }  
}
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