{"id":9969,"date":"2015-08-01T10:00:36","date_gmt":"2015-08-01T14:00:36","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=9969"},"modified":"2015-11-10T08:29:13","modified_gmt":"2015-11-10T13:29:13","slug":"%e0%a6%a8%e0%a7%8b%e0%a6%a1-%e0%a6%9c%e0%a7%87-%e0%a6%8f%e0%a6%b8-%e0%a5%a4-node-js-%e0%a6%86%e0%a6%b0%e0%a6%87%e0%a6%8f%e0%a6%b8%e0%a6%9f%e0%a6%bf-%e0%a6%b8%e0%a6%ae%e0%a7%8d%e0%a6%aa%e0%a6%a8","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=9969","title":{"rendered":"\u09a8\u09cb\u09a1.\u099c\u09c7\u098f\u09b8 \u0964 Node.js – \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09b8\u09ae\u09cd\u09aa\u09a8\u09cd\u09a8 \u098f\u09aa\u09bf\u0986\u0987"},"content":{"rendered":"

\u09a8\u09cb\u09a1 . \u099c\u09c7 \u098f\u09b8 \u0964 Node.js –\u00a0\u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09b8\u09ae\u09cd\u09aa\u09a8\u09cd\u09a8 \u098f\u09aa\u09bf\u0986\u0987
\n\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae<\/p>\n

\u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u0986\u09b0\u09cd\u0995\u09bf\u099f\u09c7\u0995\u099a\u09be\u09b0 \u0995\u09c0\u0983 \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf\u09b0 \u09ae\u09be\u09a8\u09c7 \u09b9\u09b2, \u09b0\u09bf\u09aa\u09cd\u09b0\u09c7\u099c\u09c7\u09a8\u09cd\u099f\u09c7\u09b6\u09a8\u09be\u09b2 \u09b8\u09cd\u099f\u09c7\u099f \u099f\u09cd\u09b0\u09be\u09a8\u09cd\u09b8\u09ab\u09be\u09b0\u0964 \u098f\u099f\u09bf \u0993\u09df\u09c7\u09ac \u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1\u09be\u09b0\u09cd\u09a1\u09ad\u09bf\u09a4\u09cd\u09a4\u09bf\u0995 \u0986\u09b0\u09cd\u0995\u09bf\u099f\u09c7\u0995\u099a\u09be\u09b0 \u098f\u09ac\u0982 \u098f\u0987\u099a\u099f\u09bf\u099f\u09bf\u09aa\u09bf \u09aa\u09cd\u09b0\u099f\u09cb\u0995\u09b2 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7\u0964 Roy Fielding \u098f\u099f\u09bf\u0995\u09c7 \u09e8\u09e6\u09e6\u09e6 \u09b8\u09be\u09b2\u09c7 \u09aa\u09cd\u09b0\u09ac\u09b0\u09cd\u09a4\u09a8 \u0995\u09b0\u09c7\u09a8\u0964<\/p>\n

\u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09b8\u09be\u09b0\u09cd\u09ad\u09be\u09b0 \u09b0\u09bf\u09b8\u09cb\u09b0\u09cd\u09b8\u09c7 \u098f\u0995\u09cd\u09b8\u09c7\u09b8 \u09a8\u09bf\u09b6\u09cd\u099a\u09bf\u09a4 \u0995\u09b0\u09c7, \u0995\u09cd\u09b2\u09be\u09df\u09c7\u09a8\u09cd\u099f \u098f\u0987\u099a\u099f\u09bf\u099f\u09bf\u09aa\u09bf \u09aa\u09cd\u09b0\u099f\u09cb\u0995\u09b2 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u098f\u09b0 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8 \u0993 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a7\u09a8 \u0995\u09b0\u09c7 \u09a5\u09be\u0995\u09c7\u09a8\u0964 \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u099f\u09c7\u0995\u09cd\u09b8\u099f, \u099c\u09c7\u098f\u09b8\u0993\u098f\u09a8 \u0993 \u098f\u0995\u09cd\u09b8\u098f\u09ae\u098f\u09b2\u09ad\u09bf\u09a4\u09cd\u09a4\u09bf\u0995 \u09b0\u09bf\u09aa\u09cd\u09b0\u09c7\u099c\u09c7\u09a8\u09cd\u099f\u09c7\u09b6\u09a8 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b0\u09bf\u09b8\u09cb\u09b0\u09cd\u09b8 \u09b0\u09bf\u09aa\u09cd\u09b0\u09c7\u099c\u09c7\u09a8\u09cd\u099f \u0995\u09b0\u09a4\u09c7\u0964 \u098f\u09a6\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 \u099c\u09c7\u098f\u09b8\u0993\u098f\u09a8 \u09b8\u09ac\u099a\u09c7\u09df\u09c7 \u099c\u09a8\u09aa\u09cd\u09b0\u09bf\u09df\u0964<\/p>\n

\u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09ad\u09bf\u09a4\u09cd\u09a4\u09bf\u0995 \u0986\u09b0\u09cd\u0995\u09bf\u099f\u09c7\u0995\u099a\u09be\u09b0\u09c7 \u099a\u09be\u09b0\u099f\u09bf \u098f\u0987\u099a\u099f\u09bf\u099f\u09bf\u09aa\u09bf \u09ae\u09c7\u09a5\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09b9\u09df,
\n\u2022 \u0997\u09c7\u099f
\n\u2022 \u09aa\u09c1\u099f
\n\u2022 \u09a1\u09bf\u09b2\u09bf\u099f
\n\u2022 \u09aa\u09cb\u09b8\u09cd\u099f<\/p>\n

\u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09b8\u09ae\u09cd\u09aa\u09a8\u09cd\u09a8 \u0993\u09df\u09c7\u09ac \u09b8\u09be\u09b0\u09cd\u09ad\u09be\u09b0\u0983 \u098f\u09aa\u09cd\u09b2\u09bf\u0995\u09c7\u09b6\u09a8 \u0993 \u09b8\u09bf\u09b8\u09cd\u099f\u09c7\u09ae\u09c7\u09b0 \u09aa\u09cd\u09b0\u099f\u09cb\u0995\u09b2 \u0993 \u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1\u09be\u09b0\u09cd\u09a1\u09c7\u09b0 \u09b8\u09ae\u09a8\u09cd\u09ac\u09df\u09c7 \u0993\u09df\u09c7\u09ac \u09b8\u09be\u09b0\u09cd\u09ad\u09be\u09b0 \u0997\u09a0\u09bf\u09a4 \u09b9\u09df\u0964<\/p>\n

\u09b2\u09be\u0987\u09ac\u09cd\u09b0\u09c7\u09b0\u09c0\u09b0 \u099c\u09a8\u09cd\u09af \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u09a4\u09c8\u09b0\u09bf \u0995\u09b0\u09be\u0983 \u099c\u09c7\u098f\u09b8\u0993\u098f\u09a8 \u09a1\u09be\u099f\u09be\u09ac\u09c7\u09b8\u09c7 users.json \u09a8\u09be\u09ae\u0995 \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7<\/p>\n

{
\n“user1” : {
\n“name” : “mahesh”,
\n“password” : “password1”,
\n“profession” : “teacher”,
\n“id”: 1
\n},
\n“user2” : {
\n“name” : “suresh”,
\n“password” : “password2”,
\n“profession” : “librarian”,
\n“id”: 2
\n},
\n“user3” : {
\n“name” : “ramesh”,
\n“password” : “password3”,
\n“profession” : “clerk”,
\n“id”: 3
\n}
\n}<\/p>\n

\u098f\u09b8\u09ac\u09c7\u09b0 \u09ad\u09bf\u09a4\u09cd\u09a4\u09bf\u09a4\u09c7 \u09af\u09c7 \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u098f\u09aa\u09bf\u0986\u0987 \u09aa\u09be\u0987 \u09a4\u09be\u09a6\u09c7\u09b0 \u09a4\u09be\u09b2\u09bf\u0995\u09be,<\/p>\n

S. N. URI HTTP Method POST body Result
\n1 listUsers GET empty \u09b8\u09ac \u0987\u0989\u099c\u09be\u09b0\u09c7\u09b0 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09a6\u09c7\u0996\u09be\u09df
\n2 addUser POST JSON String \u09a8\u09a4\u09c1\u09a8 \u0987\u0989\u099c\u09be\u09b0\u09c7 \u09ac\u09bf\u09ac\u09b0\u09a3 \u09b8\u0982\u09af\u09c1\u0995\u09cd\u09a4\u09bf
\n3 deleteUser DELETE JSON String \u09ac\u09bf\u09a6\u09cd\u09af\u09ae\u09be\u09a8 \u0987\u0989\u099c\u09be\u09b0 \u09a1\u09bf\u09b2\u09bf\u099f \u0995\u09b0\u09be
\n4 :id GET empty \u0987\u0989\u099c\u09be\u09b0\u09c7\u09b0 \u09ac\u09bf\u09ac\u09b0\u09a3 \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8<\/p>\n

\u09b2\u09bf\u09b8\u09cd\u099f \u0987\u0989\u099c\u09be\u09b0\u0983 \u0986\u09ae\u09be\u09a6\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a5\u09ae \u0986\u09b0\u0987\u098f\u09b8\u099f\u09bf \u098f\u09aa\u09bf\u0986\u0987 listUsers \u098f\u09aa\u09bf\u0986\u0987 server.js \u09ab\u09be\u0987\u09b2\u09c7 \u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09aa\u09be\u0987,<\/p>\n

var express = require(‘express’);
\nvar app = express();
\nvar fs = require(“fs”);<\/p>\n

app.get(‘\/listUsers’, function (req, res) {
\nfs.readFile( __dirname + “\/” + “users.json”, ‘utf8’, function (err, data) {
\nconsole.log( data );
\nres.end( data );
\n});
\n})<\/p>\n

var server = app.listen(8081, function () {<\/p>\n

var host = server.address().address
\nvar port = server.address().port<\/p>\n

console.log(“Example app listening at http:\/\/%s:%s”, host, port)<\/p>\n

})<\/p>\n

\u09b2\u09cb\u0995\u09be\u09b2 \u09ae\u09c7\u09b6\u09bf\u09a8\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f http:\/\/127.0.0.1:8081\/listUsers \u098f\u09aa\u09bf\u0986\u0987\u09a4\u09c7 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u0986\u09ae\u09b0\u09be \u09aa\u09be\u0987,<\/p>\n

{
\n“user1” : {
\n“name” : “mahesh”,
\n“password” : “password1”,
\n“profession” : “teacher”,
\n“id”: 1
\n},
\n“user2” : {
\n“name” : “suresh”,
\n“password” : “password2”,
\n“profession” : “librarian”,
\n“id”: 2
\n},
\n“user3” : {
\n“name” : “ramesh”,
\n“password” : “password3”,
\n“profession” : “clerk”,
\n“id”: 3
\n}
\n}<\/p>\n

\u0987\u0989\u099c\u09be\u09b0 \u09b8\u0982\u09af\u09c1\u0995\u09cd\u09a4 \u0995\u09b0\u09be\u0983 \u09a8\u09bf\u099a\u09c7\u09b0 \u098f\u09aa\u09bf\u0986\u0987 \u09a6\u09cd\u09ac\u09be\u09b0\u09be \u09a8\u09a4\u09c1\u09a8 \u0987\u0989\u099c\u09be\u09b0 \u09b8\u0982\u09af\u09c1\u0995\u09cd\u09a4 \u0995\u09b0\u09be \u09b9\u09df,<\/p>\n

user = {
\n“user4” : {
\n“name” : “mohit”,
\n“password” : “password4”,
\n“profession” : “teacher”,
\n“id”: 4
\n}
\n}<\/p>\n

addUser \u098f\u09aa\u09bf\u0986\u0987 \u09a6\u09cd\u09ac\u09be\u09b0\u09be \u09a1\u09be\u099f\u09be\u09ac\u09c7\u09b8\u09c7 \u09a8\u09a4\u09c1\u09a8 \u0987\u0989\u099c\u09be\u09b0 \u09b8\u0982\u09af\u09c1\u0995\u09cd\u09a4 \u0995\u09b0\u09be \u09b9\u09df,<\/p>\n

var express = require(‘express’);
\nvar app = express();
\nvar fs = require(“fs”);<\/p>\n

var user = {
\n“user4” : {
\n“name” : “mohit”,
\n“password” : “password4”,
\n“profession” : “teacher”,
\n“id”: 4
\n}
\n}<\/p>\n

app.get(‘\/addUser’, function (req, res) {
\n\/\/ First read existing users.
\nfs.readFile( __dirname + “\/” + “users.json”, ‘utf8’, function (err, data) {
\ndata = JSON.parse( data );
\ndata[“user4”] = user[“user4”];
\nconsole.log( data );
\nres.end( JSON.stringify(data));
\n});
\n})<\/p>\n

var server = app.listen(8081, function () {<\/p>\n

var host = server.address().address
\nvar port = server.address().port
\nconsole.log(“Example app listening at http:\/\/%s:%s”, host, port)<\/p>\n

})<\/p>\n

\u09b2\u09cb\u0995\u09be\u09b2 \u09ae\u09c7\u09b6\u09bf\u09a8\u09c7 \u098f\u09aa\u09bf\u0986\u0987\u09a4\u09c7 http:\/\/127.0.0.1:8081\/addUsers \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09af\u09c7 \u09ab\u09b2\u09be\u09ab\u09b2 \u0986\u09ae\u09b0\u09be \u09aa\u09be\u09ac \u09a4\u09be \u09b9\u09b2,<\/p>\n

{ user1:
\n{ name: ‘mahesh’,
\npassword: ‘password1’,
\nprofession: ‘teacher’,
\nid: 1 },
\nuser2:
\n{ name: ‘suresh’,
\npassword: ‘password2’,
\nprofession: ‘librarian’,
\nid: 2 },
\nuser3:
\n{ name: ‘ramesh’,
\npassword: ‘password3’,
\nprofession: ‘clerk’,
\nid: 3 },
\nuser4:
\n{ name: ‘mohit’,
\npassword: ‘password4’,
\nprofession: ‘teacher’,
\nid: 4 }
\n}<\/p>\n

\u09b6\u09cb \u09a1\u09bf\u099f\u09c7\u0987\u09b2\u0983\u098f\u09b0 \u099c\u09a8\u09cd\u09af \u09af\u09c7 \u098f\u09aa\u09bf\u0986\u0987 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7 \u09a4\u09be \u09b9\u09b2,<\/p>\n

var express = require(‘express’);
\nvar app = express();
\nvar fs = require(“fs”);<\/p>\n

app.get(‘\/:id’, function (req, res) {
\n\/\/ First read existing users.
\nfs.readFile( __dirname + “\/” + “users.json”, ‘utf8’, function (err, data) {
\ndata = JSON.parse( data );
\nvar user = users[“user” + req.params.id]
\nconsole.log( user );
\nres.end( JSON.stringify(user));
\n});
\n})<\/p>\n

var server = app.listen(8081, function () {<\/p>\n

var host = server.address().address
\nvar port = server.address().port
\nconsole.log(“Example app listening at http:\/\/%s:%s”, host, port)<\/p>\n

})<\/p>\n

\u0989\u09aa\u09b0\u09c7\u09b0 \u09b8\u09be\u09b0\u09cd\u09ad\u09bf\u09b8\u0995\u09c7 http:\/\/127.0.0.1:8081\/2 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b2\u09cb\u0995\u09be\u09b2 \u09ae\u09c7\u09b6\u09bf\u09a8\u09c7 \u0995\u09b2 \u09a6\u09c7\u09df\u09be\u09a4\u09c7 \u09b9\u09df\u0964<\/p>\n

{
\n“name”:”suresh”,
\n“password”:”password2″,
\n“profession”:”librarian”,
\n“id”:2
\n}<\/p>\n

\u0987\u0989\u099c\u09be\u09b0 \u09a1\u09bf\u09b2\u09bf\u099f \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af\u0983 \u098f\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u09af\u09c7 \u098f\u09aa\u09bf\u0986\u0987 \u09ac\u09cd\u09af\u09ac\u09b9\u09c3\u09a4 \u09b9\u09df \u09a4\u09be \u09b9\u09b2,<\/p>\n

var express = require(‘express’);
\nvar app = express();
\nvar fs = require(“fs”);<\/p>\n

var id = 2;<\/p>\n

app.get(‘\/deleteUser’, function (req, res) {<\/p>\n

\/\/ First read existing users.
\nfs.readFile( __dirname + “\/” + “users.json”, ‘utf8’, function (err, data) {
\ndata = JSON.parse( data );
\ndelete data[“user” + 2];<\/p>\n

console.log( data );
\nres.end( JSON.stringify(data));
\n});
\n})<\/p>\n

var server = app.listen(8081, function () {<\/p>\n

var host = server.address().address
\nvar port = server.address().port
\nconsole.log(“Example app listening at http:\/\/%s:%s”, host, port)<\/p>\n

})<\/p>\n

\u0989\u09aa\u09b0\u09c7\u09b0 \u09b8\u09be\u09b0\u09cd\u09ad\u09bf\u09b8\u0995\u09c7 http:\/\/127.0.0.1:8081\/deleteUser \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b2\u09cb\u0995\u09be\u09b2 \u09ae\u09c7\u09b6\u09bf\u09a8\u09c7 \u0995\u09b2 \u09a6\u09bf\u09b2\u09c7 \u09af\u09c7 \u09ab\u09b2\u09be\u09ab\u09b2 \u0986\u09b8\u09ac\u09c7,<\/p>\n

{ user1:
\n{ name: ‘mahesh’,
\npassword: ‘password1’,
\nprofession: ‘teacher’,
\nid: 1 },
\nuser3:
\n{ name: ‘ramesh’,
\npassword: ‘password3’,
\nprofession: ‘clerk’,
\nid: 3 }
\n}<\/p>\n

\u09a4\u09a5\u09cd\u09af\u09b8\u09c2\u09a4\u09cd\u09b0\u0983 http:\/\/www.tutorialspoint.com\/nodejs\/nodejs_restful_api.htm<\/p>\n","protected":false},"excerpt":{"rendered":"

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