2022年2月23日
ReactNative初体验请求与数据接口篇(一)
reactNative是支持fetch函数的，我们可以直接使用fetch，对于接口这块我把业务分成了如下几块业务
1.接口数据：之后导出API–请求地址
2.请求函数：之后导出HTTP–请求方法
3.封装使用方法：使用HTTP函数请求API
//接口拼接
const BASE_URL = 'http://txcourseapi.jsplusplus.com/';
const API = {
getCourseDatas: BASE_URL + 'course/v2/get_course_datas',
getCourses: BASE_URL + 'course/v2/get_courses/',
getCourseFields: BASE_URL + 'course/v2/get_course_fields'
}
export {
API
};
//请求函数
export default class HTTP {
fetchGet (options) {
return fetch(options.url)
.then((response) => response.json())
.then((responseJson) => {
options.success(responseJson);
})
.catch((error) => {
options.error(error);
})
}
}
//封装使用方法
import { API } from '../utils/config';
import HTTP from '../utils/http';
export default class IndexModel extends HTTP {
getCourseDatas () {
return new Promise((resolve) => {
this.fetchGet({
url: API.getCourseDatas,
success (data) {
resolve(data);
},
error (error) {
console.error('error:' + error);
}
});
});
}
}在主页面调用的时候，要先引入IndexModel，且实例化这个类
import IndexModel from '../models/Index';
//实例化类
const indexModel = new IndexModel();
getCourseDatas () {
indexModel.getCourseDatas().then((res) => {
// 拿到数据
const data = res.result;
});
}这样就能拿到我们后端的接口数据了，是不是很简单？？
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