HarmonyOS鸿蒙Next中使用fs.writeSync貌似没有成功的问题

HarmonyOS鸿蒙Next中使用fs.writeSync貌似没有成功的问题

创建文件写入信息函数:

export function createFile(){  //获取应用文件路径  
let context = getContext(this) as common.UIAbilityContext  
let filesDir = context.filesDir  
let filesDir1 = context.distributedFilesDir  
let context1 = getContext(this).getApplicationContext()  
let f1 = context1.filesDir  
let context2 = getContext(this) as common.AbilityStageContext  
let f2 = context2.filesDir  
let context3 = getContext(this) as common.ExtensionContext  
let f3 = context3.filesDir  
//新建并打开文件  
let file = fs.openSync(filesDir + '/test666.txt',fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE)  
//写入一段内容至文件  
let writeLen = fs.writeSync(file.fd,"Try to write str.")  
console.log("the length of str is:" + writeLen)  
// 从文件读取一段内容  
let buf = new ArrayBuffer(1024)  
let readLen = fs.readSync(file.fd,buf,{offset : 0})  
console.log("the content of file:" + String.fromCharCode.apply(null,new Uint8Array(buf.slice(0,readLen))))  
//关闭文件  
fs.close(file);}

读写函数

export function readWriteFile(){  // 获取应用文件路径  
let context = getContext(this) as common.UIAbilityContext;  
let fileDir = context.filesDir;  
//打开文件  
let srcFile = fs.openSync(fileDir + '/test666.txt',fs.OpenMode.READ_WRITE);  
let destFile = fs.openSync(fileDir + '/destFile.txt',fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);  
//读取源文件内容并写入至目的文件  
let buffSize = 4096;  
let readSize = 0;  
let buf = new ArrayBuffer(buffSize);  
let readLen = fs.readSync(srcFile.fd,buf,{offset:readSize})  
console.log("the content of file 111:" + String.fromCharCode.apply(null,new Uint8Array(buf.slice(0,readLen))))  
while (readLen > 0){    
readSize += readLen;    
fs.writeSync(destFile.fd,buf);    
readLen = fs.readSync(destFile.fd,buf,{offset:0});    
readLen = fs.readSync(srcFile.fd,buf,{offset:readSize});  
}  
//打印写入文件的信息  
readLen = fs.readSync(destFile.fd,buf,{offset : 0})  
console.log("the content of file 333:" + String.fromCharCode.apply(null,new Uint8Array(buf.slice(0,readLen))))  
//关闭文件  
fs.closeSync(srcFile)  
fs.closeSync(destFile)}

在第二个函数中貌似没有读取到destFile的信息，返回的长度还是数组初始化的长度，并且打印的信息也没有打出来。哪位大佬给解惑一下列。并且存放的文件在哪里找呢