bodyParser is deprecated express 4

Question

I am using express 4 0 and I m aware that body parser has been taken out of the express core  I am using the recommended replacement  however I am getting   body-parser deprecated bodyParser  use individual json urlencoded middlewares server js 15 12 body-parser deprecated urlencoded  explicitly specify  extended  true  for extended parsing node modules body-parser index js 74 29  Where do I find this supposed middlewares  or should I not be getting this error   var express       require  express    var server        express    var bodyParser    require  body-parser    var mongoose      require  mongoose    var passport      require    config passport    var routes        require    routes     mongoose connect  mongodb   localhost myapp   function err        if err  throw err       server set  view engine    jade    server set  views     dirname     views     server use bodyParser      server use passport initialize         Application Level Routes routes server  passport    server use express static   dirname     public      server listen 3000

User · Answer

Want zero warnings  Use it like this   app use bodyParser json     app use bodyParser urlencoded     extended  true        Explanation  The default value of the extended option has been deprecated  meaning you need to explicitly pass true or false value

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body-parser is a piece of express middleware that           reads a form s input and stores it as a javascript           object accessible through req body           body-parser  must be installed  via npm install --save body-parser  For more info see  https   github com expressjs body-parser      var bodyParser   require  body-parser       app use bodyParser json        support json encoded bodies    app use bodyParser urlencoded   extended  true         support encoded bodies   When extended is set to true  then deflated  compressed  bodies will be inflated  when extended is set to false  deflated bodies are rejected

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It means that using the bodyParser   constructor has been deprecated   as of 2014-06-19   app use bodyParser       Now deprecated   You now need to call the methods separately  app use bodyParser urlencoded      app use bodyParser json       And so on   If you re still getting a warning with urlencoded you need to use  app use bodyParser urlencoded     extended  true        The extended config object key now needs to be explicitly passed  since it now has no default value   If you are using Express    4 16 0  body parser has been re-added under the methods express json   and express urlencoded

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In older versions of express  we had to use   app use express bodyparser        because body-parser was a middleware between node and  express  Now we have to use it like   app use bodyParser urlencoded   extended  false      app use bodyParser json

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I found that while adding  app use bodyParser json     app use bodyParser urlencoded     extended  true        helps  sometimes it s a matter of your querying that determines how express handles it    For instance  it could be that your parameters are passed in the URL rather than in the body  In such a case  you need to capture both the body and url parameters and use whichever is available  with preference for the body parameters in the case below   app route   echo        all  req res   gt           let pars    Object keys req body  length  gt  0  req body req query          res send pars

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app use bodyParser urlencoded  extended  true      I have the same problem but this work for me  You can try this extended part

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What is your opinion to use express-generator it will generate skeleton project to start with  without deprecated messages appeared in your log   run this command   npm install express-generator -g   Now  create new Express js starter application by type this command in your Node projects folder   express node-express-app   That command tell express to generate new Node js application with the name node-express-app   then Go to the newly created project directory  install npm packages and start the app using the command   cd node-express-app  amp  amp  npm install  amp  amp  npm start

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If you re using express  gt  4 16  you can use express json   and express urlencoded    The express json   and express urlencoded   middleware have been added to provide request body parsing support out-of-the-box  This uses the expressjs body-parser module module underneath  so apps that are currently requiring the module separately can switch to the built-in parsers   Source Express 4 16 0 - Release date  2017-09-28 With this  const bodyParser    require  body-parser     app use bodyParser urlencoded   extended  true      app use bodyParser json      becomes  const express   require  express     app use express urlencoded   extended  true      app use express json

[node.js] bodyParser is deprecated express 4

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