您好我正在尝试做一个简单的Http GET请求,但无法让它在离子v2 Beta中运行...
这是我的app.js:
import {App, Platform} from 'ionic-angular';
import {TabsPage} from './pages/tabs/tabs';
import {HTTP_BINDINGS} from 'angular2/http';
@App({
template: '<ion-nav [root]="rootPage"></ion-nav>',
providers: [HTTP_BINDINGS],
config: {} // http://ionicframework.com/docs/v2/api/config/Config/
})
export class MyApp {
static get parameters() {
return [[Platform]];
}
constructor(platform) {
this.rootPage = TabsPage;
platform.ready().then(() => {
});
}
}
这是我的page1.js:
import {Page} from 'ionic-angular';
import {Http} from 'angular2/http';
@Page({
templateUrl: 'build/pages/page1/page1.html'
})
export class Page1 {
constructor(http:Http) {
this.mget = http.get("https://httpbin.org/ip")
.subscribe(data => {
var alert = Alert.create({
title: "Your IP Address",
subTitle: data.json().origin,
buttons: ["close"]
});
this.nav.present(alert);
}, error => {
console.log(JSON.stringify(error.json()));
});
}
}
将http:Http添加到构造函数时 - &gt;构造函数(http:Http)整个应用程序在浏览器中变为空白... 我在控制台中收到错误:
错误:找不到模块“../ page1 / page1”
我也在Page1.js中试过这个:
export class Page1 {
constructor() {
}
makeGetRequest() {
this.http.get("https://httpbin.org/ip")
.subscribe(data => {
var alert = Alert.create({
title: "Your IP Address",
subTitle: data.json().origin,
buttons: ["close"]
});
this.nav.present(alert);
}, error => {
console.log(JSON.stringify(error.json()));
console.log('yolo')
alert('hello');
});
}
}
然后在page1.html中调用makeGetRequest()(单击) 但它会返回这些例外:
EXCEPTION:评估“点击”时出错
ORIGINAL EXCEPTION:TypeError:this.http未定义
请帮忙! :)
-.-。-。-。-。-。-。-。-。-。-。-。-。-。-。-。-。-.-
这是 解决方案:
page1.js:
import {Page} from 'ionic-angular';
import {Http} from 'angular2/http';
@Page({
templateUrl: 'build/pages/page1/page1.html'
})
export class Page1 {
static get parameters(){
return [Http];
}
constructor(http) {
this.http = http;
this.mget = this.http.get("https://httpbin.org/ip")
.subscribe(data => {
console.log(data);
}, error => {
console.log('faild');
});
}
}
app.js:
import {App, Platform} from 'ionic-angular';
import {TabsPage} from './pages/tabs/tabs';
import { HTTP_PROVIDERS } from 'angular2/http';
@App({
template: '<ion-nav [root]="rootPage"></ion-nav>',
providers: [HTTP_PROVIDERS],
config: {} // http://ionicframework.com/docs/v2/api/config/Config/
})
export class MyApp {
static get parameters() {
return [[Platform]];
}
constructor(platform) {
this.rootPage = TabsPage;
platform.ready().then(() => {
});
}
}
答案 0 :(得分:1)
请试试这个
export class Page1 {
static get parameters(){
return [Http];
}
constructor(http) {
this.http = http;
this.mget = this.http.get("https://httpbin.org/ip")
.subscribe(data => {
var alert = Alert.create({
title: "Your IP Address",
subTitle: data.json().origin,
buttons: ["close"]
});
this.nav.present(alert);
}, error => {
console.log(JSON.stringify(error.json()));
});
}
}
我建议您在单独的服务中编写get请求并将其注入您的页面。
另请看一下 - http://tphangout.com/?p=113
在那里提供了详细而简单的说明,用于从Ionic 2应用程序发出简单的GET请求。
答案 1 :(得分:0)
我相信你需要
import { HTTP_PROVIDERS } from 'angular2/http';
在app.js
而不是HTTP_BINDINGS中,将providers: [HTTP_BINDINGS]
更改为providers: [HTTP_PROVIDERS]