Three ways to call the interface in uni-app

Three ways to call interface in uni-app and encapsulation uni.request()

1. Three ways to call the interface in uni-app

1、uni.request({})

uni.request({
	url:'/api/getIndexCarousel.jsp',
	method:'get',
	success:res=>{
		console.log(res.data);
		this.carouselData = res.data
	}
})

 2、uni.request({}).then()

uni.request({
	url:'/api/getIndexCarousel.jsp',
	method:'get',
}).then((result)=>{
	let [error,res] = result;
	//result将返回一个数组[error,{NativeData}]
	//NativeData：调取接口后返回的原生数据
	if(res.statusCode === 200){
		this.carouselData = res.data
	}
	if(res.statusCode === 404){
		console.log('请求的接口没有找到');
	}
})
 

3、async/await

async：用在函数定义的前面
async request(){	//函数体;}
await：用在标明了async关键字的函数内部，异步操作的前面。

onLoad() {
	this.request();
},
methods: {
	async request(){
		let result = await uni.request({
			url:'/api/getIndexCarousel.jsp'
		})
		console.log(result)
		let [err,res] = result;
		if(res.statusCode === 200){
			this.carouselData = res.data;
		}
	}
}

2. Encapsulate uni.request();

1. Create an object and hang the object under the prototype of Vue

new @/common/request.jsfile

Preliminary writing (for reference only):

export default {
	request(options){
		uni.request({
			...options,
			success:res=>{
				console.log(res)
			}
		})
	},
	get(url,data={},options={}){
		options.url=url,
		options.data=data,
		options.method='get',
		this.request(options)
	},
	post(url,data={},options={}){
		options.url=url,
		options.data=data,
		options.method='post',
		this.request(options)
	}
}

Secondary change: 

export default{
	//封装uni.request()：
	request(options){
		return new Promise((resolve,reject)=>{
			//书写异步操作的代码
			uni.request({
				...options,
				success:res=>{
					if(options.native){
						resolve(res)	//调取接口后返回的原生数据	
					}
					if(res.statusCode === 200){
						resolve(res.data)	//异步操作执行成功
					}else{
						console.log('请求的接口没有找到');
						reject(res) 	//异步操作执行失败
					}
				}
			})
		})
	},
	get(url,data={},options={}){
		options.url=url;
		options.data=data;
		options.method='get';
		return this.request(options)
	},
	post(url,data={},options={}){
		options.url=url;
		options.data=data;
		options.method='post';
		return this.request(options)
	}
 
}

2. Enter the main.js file 

import request from '@/common/request.js';
Vue.prototype.$Z = request;

Example: Writing the following code in any file can be called.this.$Z.get();

3. Call in the page

//封装uni.request()：
this.$Z.get('/api/getIndexCarousel.jsp',{},{
	native:false
}).then(res=>{
	//异步操作成功
	console.log(res)
}).catch(res=>{
	//异步操作失败
	console.log(res)
}).finally(res=>{
	//异步操作完成
});

uniapp 's network request method

CODE

uni.request({
    url: 'https://www.example.com/request', //仅为示例，并非真实接口地址。
    data: {
        name: 'name',
        age: 18
    },
    header: {
        'custom-header': 'hello' //自定义请求头信息
    },
    success: function (res) {
        console.log(res.data);
    }
});

get and post of uniapp network request

For the GET method, the data is converted to a query string. For example { name: 'name', age: 18 } The converted result is name=name&age=18.
For data with POST method and header['content-type'] is application/json, JSON serialization will be performed.
For POST method and header['content-type'] is application/x-www-form-urlencoded data, the data will be converted into query string.

The content-type in the header of the request defaults to application/json

Note that the post request must add header['content-type']