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I have this code
var fd = fs.openSync(filePath,"r");
var fr = fs.readSync(fd, buffer, 0, size, 0);
and it throws error like that
events.js:72
throw er; // Unhandled 'error' event
^
Error: OK, open 'C:\Users\iahmed16\Desktop\eclipse WS\test\images\af31a9e0a98939be82f887b0005c21752e71425e.jpg'
253
readFileSync() method. And console-log the output. If the process fails, it throws an error object. The catch block receives the error object through the given parameter.
In fs. readFile() method, we can read a file in a non-blocking asynchronous way, but in fs. readFileSync() method, we can read files in a synchronous way, i.e. we are telling node. js to block other parallel process and do the current file reading process.
The simplest way of handling errors in Express applications is by putting the error handling logic in the individual route handler functions. We can either check for specific error conditions or use a try-catch block for intercepting the error condition before invoking the logic for handling the error.
The error seems to mean that you have too many file descriptions open.
You have to make sure at some point that you close() them.
var fd = fs.openSync(filePath,"r");
var fr = fs.readSync(fd, buffer, 0, size, 0);
fs.closeSync(fd);
As for how to handle the error, you can use try...catch with thrown errors:
try {
var fd = fs.openSync(filePath,"r");
var fr = fs.readSync(fd, buffer, 0, size, 0);
fs.closeSync(fd);
} catch (e) {
console.log('Error:', e);
}
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