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native-cmos-fetch

v0.0.3

Published

* 描述

Readme

Fetch API

  • 描述

Fetch API是基于fetch封装的公共组件,适用于react-native

  • 安装
  npm install native-cmos-fetch --save-dev

参数 | 类型 | 说明 :---:|:---:|:---: postJSON | string或object |post方式请求,返回json getJSON | string |get方式请求,返回json postHTML | string或object |post方式请求,返回原文本 getHTML | string或object | get方式请求,返回原文本 getIMG | url | 返回图片二进制流

  • 使用说明
  • 引入native-cmos-fetch包
>import  Fetch from 'native-cmos-fetch'
  • postJSON请求方法(post方式请求并返回JSON对象)
> Fetch.postJSON(params)
  • getJSON请求方法(get方式请求并返回JSON对象)
> Fetch.getSON(params)
  • postHTML请求方法(post方式请求并返回HTML/TEXT)
> Fetch.postHTML(params)
  • getHTML请求方法(get方式请求并返回HTML/TEXT)
> Fetch.getHTML(params)
  • getIMG请求方法(返回一个blob二进制流)
> Fetch.getIMG(params)
  • Fetch(params)参数说明
  • params
> params可以是单独的一个URL字符串,也可以是一个{},Object类型的入参方式,可以在{}模式中传入headers参数改变headers;
> get请求只支持urlParams传参)
  • 返回参数
  • Fetch()函数将返回一个promise对象
> Fetch(url,params).then(function(json){
> 		console.log(json)
> })
> 或者:
> var res = Fetch(url,params);
> res.then(function(json){
> 	 console.log(json)
> })
  • 用then()方法处理回调,catch()处理接口异常操作;
  • 示例1 (入参传入对象支持传入Headers,自定义头部)
	import Fetch from 'native-cmos-fetch';
	let headers = new Headers();
		headers.append('Accept', '*/*');
	Fetch.postJSON({url:'./test.json',body:'a=1&b=2',headers:headers}).then(function(res){
	    console.log(res);
	},function(err){
		alert(err)
	})
  • 示例2 (入参传入url字符串)
	import Fetch from 'native-cmos-fetch';
	Fetch.postJSON('./test.json').then(function(res){
	    console.log(res);
	},function(err){
		alert(err)
	})
  • 示例3 (使用catch 捕捉异常)
	import Fetch from 'native-cmos-fetch';
	Fetch.postJSON('./test.json').then(function(res){
	    console.log(res);
	}).catch(function(err){
		console.log(err)
	})
  • 示例4 (请求一个图片路径)
	import Fetch from 'native-cmos-fetch';
	Fetch.postJSON('./phone.png').then(function(res){
	    console.log(res);
	    var imgSrc  = URL.createObjectURL(res);
	    console.log(imgSrc);
	}).catch(function(err){
		console.log(err)
	})