I have this register page in Flutter but it is not updating my database...

My API is fine, when using something like postman and sending the exact same JSON, my database gets updated, so the issue is with the code below:

postData() async {
  print('entered postDAta');
  var response = http.post(
      Uri.parse("http://localhost:8080/api/auth/signup"),
      body: {
        "username": "flota",
        "email": "[email protected]",
        "password": "87654321",
      }
  );
  print('exited postdata');
}

and

floatingActionButton: FloatingActionButton(
        onPressed: postData,
        child: Icon(Icons.add),
      ),

FULL CODE JUST IN CASE

import 'dart:developer' as developer;
import 'dart:core';

import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'dart:convert';
import 'Widget/bezierContainer.dart';
import 'loginPage.dart';

import 'package:http/http.dart' as http;

postData() async {
  print('entered postDAta');
  var response = http.post(
      Uri.parse("http://localhost:8080/api/auth/signup"),
      body: {
        "username": "flota",
        "email": "[email protected]",
        "password": "87654321",
      }
  );
  print('exited postdata');
}

class SignUpPage extends StatefulWidget {
  SignUpPage({Key ?key, this.title}) : super(key: key);

  final String? title;

  @override
  _SignUpPageState createState() => _SignUpPageState();
}

class _SignUpPageState extends State<SignUpPage> {
  Widget _backButton() {
    return InkWell(
      onTap: () {
        Navigator.pop(context);
      },
      child: Container(
        padding: EdgeInsets.symmetric(horizontal: 10),
        child: Row(
          children: <Widget>[
            Container(
              padding: EdgeInsets.only(left: 0, top: 10, bottom: 10),
              child: Icon(Icons.keyboard_arrow_left, color: Colors.black),
            ),
            Text('Back',
                style: TextStyle(fontSize: 12, fontWeight: FontWeight.w500))
          ],
        ),
      ),
    );
  }

  Widget _entryField(String title, {bool isPassword = false}) {
    return Container(
      margin: EdgeInsets.symmetric(vertical: 10),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Text(
            title,
            style: TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
          ),
          SizedBox(
            height: 10,
          ),
          TextField(
              obscureText: isPassword,
              decoration: InputDecoration(
                  border: InputBorder.none,
                  fillColor: Color(0xfff3f3f4),
                  filled: true))
        ],
      ),
    );
  }

  Widget _submitButton() {
    return Container(
      width: MediaQuery.of(context).size.width,
      padding: EdgeInsets.symmetric(vertical: 15),
      alignment: Alignment.center,
      decoration: BoxDecoration(
          borderRadius: BorderRadius.all(Radius.circular(5)),
          boxShadow: <BoxShadow>[
            BoxShadow(
                color: Colors.grey.shade200,
                offset: Offset(2, 4),
                blurRadius: 5,
                spreadRadius: 2)
          ],
          gradient: LinearGradient(
              begin: Alignment.centerLeft,
              end: Alignment.centerRight,
              colors: [Color(0xfffbb448), Color(0xfff7892b)])),
      child: Text(
        'Register Now',
        style: TextStyle(fontSize: 20, color: Colors.white),
      ),
    );
  }

  Widget _loginAccountLabel() {
    return InkWell(
      onTap: () {
        Navigator.push(
            context, MaterialPageRoute(builder: (context) => LoginPage()));
      },
      child: Container(
        margin: EdgeInsets.symmetric(vertical: 20),
        padding: EdgeInsets.all(15),
        alignment: Alignment.bottomCenter,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'Already have an account ?',
              style: TextStyle(fontSize: 13, fontWeight: FontWeight.w600),
            ),
            SizedBox(
              width: 10,
            ),
            Text(
              'Login',
              style: TextStyle(
                  color: Color(0xfff79c4f),
                  fontSize: 13,
                  fontWeight: FontWeight.w600),
            ),
          ],
        ),
      ),
    );
  }

  Widget _title() {
    return RichText(
      textAlign: TextAlign.center,
      text: TextSpan(
          text: 'd',
          style: TextStyle(
              fontSize: 30,
              fontWeight: FontWeight.w700,
              color: Color(0xffe46b10)
          ),

          children: [
            TextSpan(
              text: 'ev',
              style: TextStyle(color: Colors.black, fontSize: 30),
            ),
            TextSpan(
              text: 'rnz',
              style: TextStyle(color: Color(0xffe46b10), fontSize: 30),
            ),
          ]),
    );
  }

  Widget _emailPasswordWidget() {
    return Column(
      children: <Widget>[
        _entryField("Username"),
        _entryField("Email id"),
        _entryField("Password", isPassword: true),
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    final height = MediaQuery.of(context).size.height;
    return Scaffold(
      body: Container(
        height: height,
        child: Stack(
          children: <Widget>[
            Positioned(
              top: -MediaQuery.of(context).size.height * .15,
              right: -MediaQuery.of(context).size.width * .4,
              child: BezierContainer(),
            ),
            Container(
              padding: EdgeInsets.symmetric(horizontal: 20),
              child: SingleChildScrollView(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    SizedBox(height: height * .2),
                    _title(),
                    SizedBox(
                      height: 50,
                    ),
                    _emailPasswordWidget(),
                    SizedBox(
                      height: 20,
                    ),
                    _submitButton(),
                    SizedBox(height: height * .14),
                    _loginAccountLabel(),
                  ],
                ),
              ),
            ),
            Positioned(top: 40, left: 0, child: _backButton()),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: postData,
        child: Icon(Icons.add),
      ),
    );
  }
}
    

CodePudding user response：

when we send data to server in mobile mostly is the raw format. for that we have to use 'jsonEncode' for converting and we have to set header.

   postData() async {
     print('entered postDAta');
       var response = await http.post(
       Uri.parse("http://localhost:8080/api/auth/signup"),
      body: jsonEncode({
       "username": "flota",
       "email": "[email protected]",
      "password": "87654321",
      }),headers: {
      'Content-type': 'application/json',
      'Accept': 'application/json',
    }
   );
   print(response.body);
    print('exited postdata');
      }

CodePudding user response：

postData() async {
  print('entered postDAta');
  var response = await http.post(
      Uri.parse("http://localhost:8080/api/auth/signup"),
      body: {
        "username": "flota",
        "email": "[email protected]",
        "password": "87654321",
      }
  );
  print('exited postdata');
}

use await before http.post. I think it will work.