สร้างโปรเจ็กส์ ionic ไว้ทดสอบ CORS

ใช้ทดสอบกับ

สร้างโปรเจ็กส์ชื่อ corsApp แบบ blank

[code]
> ionic start corsApp blank
[/code]

แก้ไขไฟล์ src/app/app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';
import { SplashScreen } from '@ionic-native/splash-screen';
import { StatusBar } from '@ionic-native/status-bar';

import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';

import { HttpClientModule } from '@angular/common/http';

@NgModule({
  declarations: [
    MyApp,
    HomePage
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    IonicModule.forRoot(MyApp)
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    HomePage
  ],
  providers: [
    StatusBar,
    SplashScreen,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
  ]
})
export class AppModule {}

import { BrowserModule } from '@angular/platform-browser';

import { ErrorHandler, NgModule } from '@angular/core';

import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';

import { SplashScreen } from '@ionic-native/splash-screen';

import { StatusBar } from '@ionic-native/status-bar';

import { MyApp } from './app.component';

import { HomePage } from '../pages/home/home';

import { HttpClientModule } from '@angular/common/http';

@NgModule({

declarations: [

MyApp,

HomePage

imports: [

BrowserModule,

HttpClientModule,

IonicModule.forRoot(MyApp)

bootstrap: [IonicApp],

entryComponents: [

MyApp,

HomePage

providers: [

StatusBar,

SplashScreen,

{provide: ErrorHandler, useClass: IonicErrorHandler}

]

})

export class AppModule {}

แก้ไขไฟล์ src/pages/home/home.ts

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';

import { Observable } from 'rxjs/Observable';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  films: Observable<any>;
  st: string;

  constructor(public navCtrl: NavController,
    public httpClient: HttpClient) {

    this.st = "O";
    this.films = this.httpClient.get('http://localhost:54938/api/Values');

    this.films.subscribe(data => {
      console.log('my data: ', data);
      console.log('my data: ', data[0]['firstname']);
      this.st = data[0]['firstname'];
    })
  }
}

import { Component } from '@angular/core';

import { NavController } from 'ionic-angular';

import { Observable } from 'rxjs/Observable';

import { HttpClient } from '@angular/common/http';

@Component({

selector: 'page-home',

templateUrl: 'home.html'

})

export class HomePage {

films: Observable<any>;

st: string;

constructor(public navCtrl: NavController,

public httpClient: HttpClient) {

this.st = "O";

this.films = this.httpClient.get('http://localhost:54938/api/Values');

this.films.subscribe(data => {

console.log('my data: ', data);

console.log('my data: ', data[0]['firstname']);

this.st = data[0]['firstname'];

})

}

แก้ไขไฟล์ src/pages/home/home.html

<ion-header>
  <ion-navbar>
    <ion-title>
      Ionic Blank
    </ion-title>
  </ion-navbar>
</ion-header>

<ion-content padding>
  x {{st}} x
</ion-content>

<ion-header>

<ion-navbar>

<ion-title>

Ionic Blank

</ion-title>

</ion-navbar>

</ion-header>

<ion-content padding>

x {{st}} x

</ion-content>

ดูที่หน้าจะจะเห็น x Phaisarn x
หรือดูที่ Debug ด้วยการกด F12 ดูก็จะเห็นข้อมูลที่วิ่งมาละ

แต่ถ้าเห็น x O x แสดงว่าโหลดข้อมูลไม่ได้

Phaisarn Sutheebanjard

blog.phaisarn.com

สร้างโปรเจ็กส์ ionic ไว้ทดสอบ CORS