Reading Request data Using Express coming in from GET or POST --using the Express body-parser module

 

Example via extension of URI --- example URI/data (e.g. /read/Lynne)

this is a more "modern way" of building out GET requests where data in URI

>>> here we see what will happen when we run the code below

NOTE: THIS IS inside index.js (from routes but, you could put it in some controller code file instead that gets the forwarded request object

var express = require('express');
var router = express.Router();

//########################################
//to process data sent in on request need body-parser module
var bodyParser = require('body-parser');
var path = require ('path'); //to work with separtors on any OS including Windows
var querystring = require('querystring'); //for use in GET Query string of form URI/path?name=value

router.use(bodyParser.json()); // for parsing application/json
router.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencode
//#########################################

// GET with  URI  /read/Lynne   which means name=Lynne
router.get('/read/:name', function(req, res, next) {
    //expecting data variable called name --retrieve value using body-parser
    var body = JSON.stringify(req.body);  //if wanted entire body as JSON
    var params = JSON.stringify(req.params);//if wanted parameters
    var value_name = req.params.name;  //retrieve the data associated with name
    res.send("hello " + value_name);
})

 

 

Example with normal GET query string at endof URI --- example URI?n=v&n2=v2 (e.g. /readNameAndRespond?name=Lynne)

here the data is appended to the query string -- THIS IS WHAT HAPPENS FROM A GET FORM

>>> here we see what will happen when we run the code below

 

NOTE: THIS IS inside index.js (from routes but, you could put it in some controller code file instead that gets the forwarded request object 

var express = require('express');
var router = express.Router();

//########################################

              //to process data sent in on request need body-parser module

            var bodyParser = require('body-parser');
var path = require ('path'); //to work with separtors on any OS including Windows
var querystring = require('querystring'); //for use in GET Query string of form URI/path?name=value

router.use(bodyParser.json()); // for parsing application/json
router.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencode
//#########################################

// GET with URI with querry  /readNameAndRespond?name=Lynne
router.get('/readNameAndRespond', function(req, res, next) {
    //expecting data variable called name --retrieve value using body-parser
    var body = JSON.stringify(req.body);  //if wanted entire body as JSON
    var params = JSON.stringify(req.params);//if wanted parameters
    var query = req.query;  //if wanted the query
    var value_name = req.query.name;  //retrieve the data associated with name
    res.send("hello " + value_name);
});

 

 

Example with POST request of a URI --- example sending POST data from a form

here the data is appended to the query string -- THIS IS WHAT HAPPENS FROM A GET FORM

>>> here we see what will happen when we run the code below

 

NOTE: THIS IS inside index.js (from routes but, you could put it in some controller code file instead that gets the forwarded request object

var express = require('express');
var router = express.Router();

//########################################

              //to process data sent in on request need body-parser module

            var bodyParser = require('body-parser');
var path = require ('path'); //to work with separtors on any OS including Windows
var querystring = require('querystring'); //for use in GET Query string of form URI/path?name=value

router.use(bodyParser.json()); // for parsing application/json
router.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencode
//#########################################

//now processing post
router.post('/readNameAndRespond', function(req, res, next) {

    //expecting data variable called name --retrieve value using body-parser
    var body = JSON.stringify(req.body);  //if wanted entire body as JSON
    var params = JSON.stringify(req.params);//if wanted parameters
    var value_name = req.body.name;  //retrieve the data associated with name
    res.send("hello " + value_name);
});

 

 

 

 

 

 

© Lynne Grewe