v-request.js

/**
 用法上，和Taro.request相同
 */

function serializeParams (params) {
    if (!params) {
      return ''
    }
    return Object.keys(params)
      .map(key => (`${encodeURIComponent(key)}=${encodeURIComponent(params[key])}`)).join('&')
  }

function generateRequestUrlWithParams (url, params) {
    params = typeof params === 'string' ? params : serializeParams(params)
    url += (~url.indexOf('?') ? '&' : '?') + params
    url = url.replace('?&', '?')
    return url
  }

wx.vrequest = function (options) {

    options = options || {}
    if (typeof options === 'string') {
        options = {
        url: options
        }
    }

    let url = options.url
    let data = options.data || {}
    const params = {}
    const res = {}

    let method = options.method || 'GET'
    method = method.toUpperCase()

    if (method === 'GET') {
        url = generateRequestUrlWithParams(url, data)
      } else {
        if (typeof data === 'object') {
          const contentType = options.header && (options.header['content-type'] || options.header['Content-Type'])
          if (contentType === 'application/json') {
            data = JSON.stringify(data)
          } else if (contentType === 'application/x-www-form-urlencoded') {
            data = serializeParams(data)
          }
        }
      }
    
    if (method !== 'GET' && method !== 'HEAD') {
        params.body = data
    }

    // 转发options。 options 属性仍可读取，被使用
    params.headers = options.header
    params.mode = options.mode
    params.credentials = options.credentials
    params.cache = options.cache
    params.method = method
    params.url = url

    // 开始请求
    return new Promise((RES, REJ) => {
      wx.cloud.callFunction({
        name: 'v-request',
        data: {
          options: params
        },
        success: res => {
            
            const { result }  = res;
            console.log((result))
            // 如果datatype='json'，则解析后
        
    
            options.success && options.success(result);
            RES(result); 
        },
        fail: err => {
          // 错误回调
          options.fail && options.fail({
            errMsg: 'request:fail',
            err
          });
          REJ(err);
        },
        complete: options.complete
      })
    })
  }