I'm using Node to request API and parse the returned JSON. When I requests an API for several times, node crashes and reports a SyntaxError: Unexpected token error. The error is located at a character in a string of the JSON object. I found that the string is very long (60000+ characters encoded with utf-8). Is this problem caused by the too long string? How does it happens?
JSON string can see here: http://www.liyan93.com/mdnotes/JinquanquanIssues/errorData.json
https.get(url, (resp) => {
let data = '';
// A chunk of data has been recieved.
resp.on('data', (chunk) => {
data += chunk;
});
// The whole response has been received. Print out the result.
resp.on('end', () => {
const jsonDATA = JSON.parse(data).parse;
var jsonText = jsonDATA.text;
console.log(jsonText);
});
});
I have experienced this when the connection was terminated by the other side / cut off before the full string was transferred. Perhaps that could be the cause?
Tip: The latest Node provides a little more useful error upon json parse error, showing a part of the string. You can also use jju as the parser, it provides even a better error message.
