sails.js Yes. Since Sails is created with Node.js you can usefs.exists. This will remove the file from the array if it's not found. You can load it into your view how you were before. fs = require('fs'); for (i = 0; i < loadJS.length; i++) { fs.exists(loadJS[i], f...
app.post('/upload', upload.single('file'),async(req, res) => {const{path: uploadedFilePath } = req.file;consttargetPath =resolve('uploads', req.file.originalname);try{awaitpromisify(fs.access)(targetPath); res.status(400).json({error:'File already exists.'}); }catch(error) {// ...
if(xmlHttp.status==404) return false; else return true; } 我最喜欢的是第四种方法,代码简单 1、 function CheckImgExists(imgurl) { var ImgObj = new Image(); //判断图片是否存在 ImgObj.src = imgurl; //没有图片,则返回-1 if (ImgObj.fileSize > 0 || (ImgObj.width > 0 && ImgObj....
有一个同步版本的path.exists - path.existsSync..好像是在医生那里漏掉的。
(phantomjsUrl,"opt="+option);// 解析echartsConvert响应JSONObject response=JSON.parseObject(result);// 如果echartsConvert正常返回if(SUCCESS_CODE.equals(response.getString("code"))){returnresponse.getString("data");}else{// 未正常返回log.error("ECharts Convert 服务器异常:{}",response);}...
classProxySandBox{proxyWindow;isRunning=false;active(){this.isRunning=true;}inactive(){this.isRunning=false;}constructor(){constfakeWindow=Object.create(null);this.proxyWindow=newProxy(fakeWindow,{set:(target,prop,value,receiver)=>{if(this.isRunning){target[prop]=value;}},get:(target,prop,...
Because the way most people use it, it's a TOCTOU race condition: the file may have changed or have been deleted between checking and opening it. If you are going to open it, then you need to be prepared for such eventualities, so you might as well skip the check and open it strai...
Also users should check the file system's readyState and error properties to make sure it is usable.var fs; function fsReady(err, fs) { if(err) throw err; // Safe to use fs now... } fs = new Filer.FileSystem({ name: "my-filesystem", flags: [ 'FORMAT' ], provider: new ...
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checkFilePath +="/"+ filePathList[i];if(i == filePathList.length -1) {//文件Filefile=newFile(checkFilePath);if(!file.exists()) { FileUtils.copyInputStreamToFile(inputStream, file); } }else{//目录tempDir =newFile(checkFilePath);if(!tempDir.exists()) { ...