若后期优化了再更新，（题外话： h5请求代理不能设置路径别名，否则cookies会丢失，别问我怎么知道的，说多了都是泪）

用法

//api.js

import http from './http/request.js'
// 登录
export const login = params => http.post(`login`, params)

request.js

import base from './config'


//  统一给参数
const dataObj = (url, params) => {
    let options = params

    // #ifdef APP-PLUS
    // DOTO:暂时没处理过,只是放在这里
    let data = null; //业务数据
    let terminal = 1 //终端类型，web:0,app:1
    options = {
        ...params,
        data,
        sign,
        terminal
    }
    // #endif

    return options
}

const goLogin = () => {
    uni.clearStorageSync();
    uni.reLaunch({
        url: '/pages/login/Login'
    }) //未授权，请重新登录(401)
}

// 请求错误处理
const checkError = (e, reject) => {
    // console.error("----接口错误----", e)
    if (e.data) {
        if (e.data.code) {
            switch (Number(e.data.code)) {
                case 401:
                    goLogin()
                    break;
            }
        }
        reject(e.data)
    } else {
        reject({
            'msg': '接口錯誤'
        })
    }
}

// 封装请求
const request = (method, url, options) => {
    let methods = '';
    let headers = {};
    switch (method) {
        case 'get':
            methods = 'GET'
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            }
            break;
        case 'post':
            methods = 'POST'
            headers = {
                'Content-Type': 'application/json; charset=UTF-8'
            }
            break;
        case 'postForm':
            methods = 'POST'
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
            }
            break;
    }
    let obj = {},
        hideLoading = false,
        loadingText = 'loading...';
    if (options) { //如果有options
        if (options.hideLoading) {
            hideLoading = options.hideLoading
            delete options.hideLoading
        }
        if (options.loadingText) {
            loadingText = options.loadingText
            delete options.loadingText
        }
    }

    return new Promise((resolve, reject) => {
        !hideLoading && uni.showLoading({
            title: loadingText
        })
        uni.request({
            url: `${base.BASE_URL}${url}`,
            method: methods,
            data: dataObj(url, options),
            header: headers,
            success: res => {
                if (res.statusCode == 200) {
                    if (res.data && (res.data.code == 200 || res.data.code == "00")) {
                        resolve(res.data)
                    } else {
                        checkError(res, reject)
                    }
                } else {
                    reject({
                        'msg': '请求錯誤（' + res.statusCode + ')'
                    })
                }
            },
            fail: e => {
                checkError(e, reject)
            },
            complete: () => {
                uni.hideLoading()
            }
        })
    })
}


// 上传文件 封装请求
const uploadFile = (url, options) => {
    let tempData = options || {}
    uni.showLoading({
        title: "上传中..."
    })

    return new Promise((resolve, reject) => {
        uni.uploadFile({
            url: `${base.BASE_URL}${url}`,
            filePath: tempData.file,
            name: 'file',
            formData: tempData,
            success: res => {
                if (res.statusCode == 200) {
                    let temp = JSON.parse(res.data)
                    // console.log('temp',temp)
                    if (temp.code == 200) {
                        resolve(temp)
                    } else {
                        reject(temp)
                        uni.showToast({
                            title: temp.msg || '接口错误(' + temp.code + ')',
                            icon: 'none'
                        })
                    }
                } else {
                    uni.showToast({
                        title: `未知错误(${res.statusCode})`,
                        icon: 'none'
                    })
                }
            },
            fail(e) {
                uni.showToast({
                    title: '接口请求超时',
                    icon: 'none'
                })
                reject(e.data)
            },
            complete: () => {
                uni.hideLoading()
            }
        });
    })
}


export default {
    get: (url, options) => {
        return request('get', url, options)
    },

    // JOSN格式
    post: (url, options) => {
        return request('post', url, options)
    },

    // form-data格式
    postForm: (url, options) => {
        return request('postForm', url, options)
    },

    // 上传
    upload: (url, options) => {
        return uploadFile(url, options)
    }
}

config.js

const ENV = process.env.NODE_ENV; 
console.log('当前环境', process.env.NODE_ENV)

const apiHub = {
    //开发环境
    development: {
        BASE_URL: "/api/", 
        IMG_URL: "https://xx",
        BASE_UPLOAD_URL: "",
    },

    //测试环境
    test: {
        BASE_URL: "https://xxx",
        IMG_URL: "https://xxx",
        BASE_UPLOAD_URL: "",
    },

    //生产环境
    production: {
        BASE_URL: "https://xx",
        IMG_URL: "https://xx",
        BASE_UPLOAD_URL: "",
    }
}

// 导出配置
export default {
    ENV: ENV,
    ...apiHub[ENV]
}