How to validate json body in nodejs

Validate JSON Body in Node.JS

If any api have wrong body of json passed.

To validate json body globally any api of application server.

For example-> login api have required body to be below format, but by mistake body have "," left.


 

"email":"[email protected]",  // suppose, body have  , is not added, then throw error message:- wrong body of json

Following code are useful in node.js


 
var express=require('express');
var bodyParser=require('body-parser');
var app=express();
app.use(bodyParser.json());

app.use(function(err,req,res,callback){

    if(err instanceof SyntaxError && err.status===400 && 'body' in err){

         res.status(403).send({

             "error":false,

             "message":"Wrong Body of json",

             "response":null

         })

          res.end()

    }

});

app.use(bodyParser());

I hope it will be helpful.

Thanks