Why the bodyParser.json was used twice?












1















I am a beginner of Node.js , I am researching the sample code as below, I do not understandard why it using the [app.use(bodyParser.json());] twice, what is the purpose of #1 and #2? thanks 



    var express = require('express');

    var http = require('http');

    var path = require('path');

    var fs = require('fs');

    var mime = require('mime');



    var bodyParser = require('body-parser'); 

    var cookieParser = require('cookie-parser');

    var cfenv = require('cfenv');



    var vcapServices = require('vcap_services');

    var appEnv = cfenv.getAppEnv(); 



    var app = express(); 

    app.use(cookieParser()); 

    app.use(bodyParser.urlencoded({ extended: true }));

    app.use(bodyParser.json()); // #1

    app.set('appName', 'watsonDemo');

    app.set('port', process.env.PORT || 6003);



    app.set('views', path.join(__dirname + '/HTML'));

    app.engine('html', require('ejs').renderFile);

    app.set('view engine', 'ejs');

    app.use(express.static(__dirname + '/HTML'));

    app.use(bodyParser.json()); // #2



    app.use('/', require("./controller/restapi/router"));





node.js body-parser







share|improve this question























  • Probably a mistake. Using it once is okay.

    – lomse
    Nov 14 '18 at 15:51
















1















I am a beginner of Node.js , I am researching the sample code as below, I do not understandard why it using the [app.use(bodyParser.json());] twice, what is the purpose of #1 and #2? thanks 



    var express = require('express');

    var http = require('http');

    var path = require('path');

    var fs = require('fs');

    var mime = require('mime');



    var bodyParser = require('body-parser'); 

    var cookieParser = require('cookie-parser');

    var cfenv = require('cfenv');



    var vcapServices = require('vcap_services');

    var appEnv = cfenv.getAppEnv(); 



    var app = express(); 

    app.use(cookieParser()); 

    app.use(bodyParser.urlencoded({ extended: true }));

    app.use(bodyParser.json()); // #1

    app.set('appName', 'watsonDemo');

    app.set('port', process.env.PORT || 6003);



    app.set('views', path.join(__dirname + '/HTML'));

    app.engine('html', require('ejs').renderFile);

    app.set('view engine', 'ejs');

    app.use(express.static(__dirname + '/HTML'));

    app.use(bodyParser.json()); // #2



    app.use('/', require("./controller/restapi/router"));





node.js body-parser







share|improve this question























  • Probably a mistake. Using it once is okay.

    – lomse
    Nov 14 '18 at 15:51














1












1








1








I am a beginner of Node.js , I am researching the sample code as below, I do not understandard why it using the [app.use(bodyParser.json());] twice, what is the purpose of #1 and #2? thanks 



    var express = require('express');

    var http = require('http');

    var path = require('path');

    var fs = require('fs');

    var mime = require('mime');



    var bodyParser = require('body-parser'); 

    var cookieParser = require('cookie-parser');

    var cfenv = require('cfenv');



    var vcapServices = require('vcap_services');

    var appEnv = cfenv.getAppEnv(); 



    var app = express(); 

    app.use(cookieParser()); 

    app.use(bodyParser.urlencoded({ extended: true }));

    app.use(bodyParser.json()); // #1

    app.set('appName', 'watsonDemo');

    app.set('port', process.env.PORT || 6003);



    app.set('views', path.join(__dirname + '/HTML'));

    app.engine('html', require('ejs').renderFile);

    app.set('view engine', 'ejs');

    app.use(express.static(__dirname + '/HTML'));

    app.use(bodyParser.json()); // #2



    app.use('/', require("./controller/restapi/router"));





node.js body-parser







share|improve this question














I am a beginner of Node.js , I am researching the sample code as below, I do not understandard why it using the [app.use(bodyParser.json());] twice, what is the purpose of #1 and #2? thanks 



    var express = require('express');

    var http = require('http');

    var path = require('path');

    var fs = require('fs');

    var mime = require('mime');



    var bodyParser = require('body-parser'); 

    var cookieParser = require('cookie-parser');

    var cfenv = require('cfenv');



    var vcapServices = require('vcap_services');

    var appEnv = cfenv.getAppEnv(); 



    var app = express(); 

    app.use(cookieParser()); 

    app.use(bodyParser.urlencoded({ extended: true }));

    app.use(bodyParser.json()); // #1

    app.set('appName', 'watsonDemo');

    app.set('port', process.env.PORT || 6003);



    app.set('views', path.join(__dirname + '/HTML'));

    app.engine('html', require('ejs').renderFile);

    app.set('view engine', 'ejs');

    app.use(express.static(__dirname + '/HTML'));

    app.use(bodyParser.json()); // #2



    app.use('/', require("./controller/restapi/router"));





node.js body-parser




node.js body-parser






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 14 '18 at 15:36









ocean5ocean5

62




62













  • Probably a mistake. Using it once is okay.

    – lomse
    Nov 14 '18 at 15:51



















  • Probably a mistake. Using it once is okay.

    – lomse
    Nov 14 '18 at 15:51

















Probably a mistake. Using it once is okay.

– lomse
Nov 14 '18 at 15:51





Probably a mistake. Using it once is okay.

– lomse
Nov 14 '18 at 15:51












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