Unexpected end of json input in Node.js

Multi tool use
Multi tool use


Unexpected end of json input in Node.js



I have Json data which I receive it as post data in my node.js server.



But the problem is, its not able to parse the string I sent.Here is my node.js server code.


res.header("Access-Control-Allow-Origin", "*");
req.on('data',function(data)
{
var done=false;
console.log(data);
var schema;

schema=JSON.parse(data);
}



Here I get the error when I parse the json data(data).


undefined:776



SyntaxError: Unexpected end of JSON input
at JSON.parse (<anonymous>)
at IncomingMessage.<anonymous> (/Users/as6/Documents/test/server.js:206:17)
at emitOne (events.js:115:13)
at IncomingMessage.emit (events.js:210:7)
at IncomingMessage.Readable.read (_stream_readable.js:462:10)
at flow (_stream_readable.js:833:34)
at resume_ (_stream_readable.js:815:3)
at _combinedTickCallback (internal/process/next_tick.js:102:11)
at process._tickCallback (internal/process/next_tick.js:161:9)



I verified JSON data using JSONLint for syntax errors.But it was absolutely fine. I dont know what's wrong and how to correct it.





try to JSON.stringify first and then check whether it is actually in the right format ? If yes then try this : JSON.parse(JSON.stringify(data))
– Aakash Uniyal
Jul 11 '17 at 9:01




2 Answers
2



data events can be fired multiple times, so you have to collect all the data values and concatenate them together when the end event has fires:


data


data


end


let chunks = ;

req.on('data', function(data) {
chunks.push(data);
}).on('end', function() {
let data = Buffer.concat(chunks);
let schema = JSON.parse(data);
...
});



However, perhaps you should consider using body-parser.


body-parser



Do change the line


schema = JSON.parse(data);



into


schema = JSON.parse(JSON.stringify(data));






By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

xZGtSy8hlTO42SS9tiMKW,D14YtSmwhUY3
pzy,r8V,R7e

Popular posts from this blog

Rothschild family

Cinema of Italy