angularjs请求数据的方法示例

在 app.module.ts 中引入 httpclientmodule 并注入

import {httpclientmodule} from '@angular/common/http';
imports: [
 browsermodule,
 httpclientmodule
]

angular get 请求数据

在用到的地方引入 httpclient 并在构造函数声明

import {httpclient} from "@angular/common/http";
constructor(public http:httpclient) { }

get 请求数据

var api = "http://a.itying.com/api/productlist";
this.http.get(api).subscribe(response => {
 console.log(response);
});

angular post 提交数据

在用到的地方引入 httpclient、httpheaders 并在构造函数声明 httpclient

import {httpclient,httpheaders} from "@angular/common/http";
constructor(public http:httpclient) { }

post 提交数据

const httpoptions = {
 headers: new httpheaders({ 'content-type': 'application/json' })
};
var api = "http://127.0.0.1:3000/dologin";
this.http.post(api,{username:'张三',age:'20'},httpoptions).subscribe(response => {
 console.log(response);
});

angular jsonp 请求数据

在 app.module.ts 中引入 httpclientmodule、httpclientjsonpmodule 并注入

import {httpclientmodule,httpclientjsonpmodule} from
'@angular/common/http';
imports: [
 browsermodule,
 httpclientmodule,
 httpclientjsonpmodule
]

在用到的地方引入 httpclient 并在构造函数声明

import {httpclient} from "@angular/common/http";
constructor(public http:httpclient) { }

jsonp 请求数据

var api = "http://a.itying.com/api/productlist";
this.http.jsonp(api,'callback').subscribe(response => {
console.log(response);
});

angular 中使用第三方模块 axios 请求数据

安装 axios

cnpm install axios --save

用到的地方引入 axios

import axios from 'axios';
axios.get('/user?id=12345')
.then(function (response) {
// handle success
console.log(response);
})
.catch(function (error) {
// handle error
console.log(error);
})
.then(function () {
// always executed
});

封装service作为http服务

import { injectable } from '@angular/core';
import axios from 'axios';
@injectable({
 providedin: 'root'
})
export class httpserviceservice {
 constructor() { }
 axiosget(api){
   return new promise((resolve,reject)=>{
    axios.get(api)
     .then(function (response) {
      // handle success   
      resolve(response)
     });
  })

 } 
}

总结

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