Nodejs Express req.body 为空且 header null

Question

I am working on retrieving a post request body so that i can add the arguments in the body to my database.

At first I was getting an error SyntaxError: Unexpected token ' in JSON at position 0 at JSON.parse (<anonymous>) but i added this line applctn.use(express.urlencoded({ extended: true })); // to support URL-encoded bodies applctn.use(express.urlencoded({ extended: true })); // to support URL-encoded bodies and now i get an empty body.

My code looks like this:

const express = require("express");
const moment = require("moment");
const db = require("./dbconnection.js"); //reference of dbconnection.js
var bodyParser = require("body-parser");

const applctn = express();

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

applctn.post("/hl7_message", function(req, res) {

    var jsonObj = JSON.stringify(req.body);

    console.log(req);

When i add ```app.use(bodyParser.json()); // to support JSON-encoded bodies

 ```SyntaxError: Unexpected token ' in JSON at position 0 at JSON.parse (<anonymous>) 

Any advise /tips on how i can retrieve the body contents will be appreciated.

my response

Answer 1

You forgot to add applctn.use(bodyParser.json()) . Here is the solution:

const express = require("express");
const moment = require("moment");
const db = require("./dbconnection.js"); //reference of dbconnection.js
var bodyParser = require("body-parser");

const applctn = express();
applctn.use(bodyParser.json());
applctn.use(bodyParser.urlencoded({extended: true}));

applctn.post("/hl7_message", function(req, res) {
 console.log(req.body);
 res.send({code:200,message:"success"})
})

applctn.listen(3000,function(){
  console.log("running");
});