在vue中使用superagent封装http请求

/**
 * create BY CHUCHUR
 * 2017年2月22日 14:09:31
 */
// 配置API接口地址

// 引用superagent
import request from 'superagent'
// import jsonp from 'superagent-jsonp'
// import utils from './utils.js'
import store from '@/store'
import {
  Toast
} from 'vue-ydui/dist/lib.rem/dialog'


// utils.loadScript(process.env.UC + '/sso/account/verifyUsernameToken?client_id=14046695&funcName=ossLogin')

// 自定义判断元素类型JS
const toType = (obj) => {
  return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
}
// 参数过滤函数
const filterNull = (o) => {
  if (toType(o) !== 'object') return o
  for (var key in o) {
    if (o[key] === null) {
      delete o[key]
    }
    if (toType(o[key]) === 'string') {
      o[key] = o[key].trim()
      if (o[key].length === 0) {
        delete o[key]
      }
    }
  }
  return o
}

let callbacks = []
// let ossResponsed = false // oss
let ossResponsed = true
const httpBase = (method, url, params, success, failure) => {

  let call = () => {
    var r = request(method, url)
    store.dispatch('showLoading')
    if (params) {
      // params = filterNull(params)
      if (method === 'POST' || method === 'PUT') {
        if (toType(params) === 'formdata') {
          // r.responseType('blob')
          // r.set('Content-Type', 'multipart/form-data')
          r.send(params)
        } else if (toType(params) === 'object') {
          // params = JSON.stringify(params)
          // params = getFormData(params)
          r.set('Content-Type', 'application/json; charset=utf-8')
          r.send(params)
        } else {
          r.set('Content-Type', 'application/json; charset=utf-8')
          r.send(params)
        }
        // console.log(params)
        // r = r.send(params)
      } else if (method === 'GET' || method === 'DELETE') {
        r.set('Content-Type', 'application/json; charset=utf-8')
        r.query(params)
      }
    }
    // var router = this.$router
    r.end((err, res) => {
      if (err) {
        //  Message.error('系统错误：CODE:' + res.status)
        Toast({
          mes: '系统错误' + err,
          timeout: 2000,
          icon: 'error'
        })
      };
      if (parseInt(res.status) === 200) {
        if (success) {
          if (res.body) {
            if (res.body.code === '-5000') {
              Toast({
                mes: '系统内部错误',
                timeout: 1500,
                icon: 'error'
              })
            }
            if (res.body.code === '404') {
              Toast({
                mes: '404错误',
                timeout: 1500,
                icon: 'error'
              })
            }
            if (res.body.code !== '0' && res.body.code !== '-5000' && res.body.code !== '404' && res.body.msg && !params.callback) {
              Toast({
                mes: res.body.msg,
                timeout: 1500,
                icon: 'error'
              })
            }
            success(res.body || res.text)
          } else {
            success(res)
          }
        }
      } else {
        if (failure) {
          failure(res.body || res.text)
        } else {
          if (res.body.code === '-5000') {
            Toast({
              mes: '系统内部错误',
              timeout: 1500,
              icon: 'error'
            })
          } else if (res.body.code === '404') {
            Toast({
              mes: '404错误',
              timeout: 1500,
              icon: 'error'
            })
          } else {
            Toast({
              mes: JSON.stringify(res.body.msg),
              timeout: 1500,
              icon: 'error'
            })
          }

          // window.alert('error: ' + JSON.stringify(res.body))
        }
      }
      setTimeout(() => {
        store.dispatch('hideLoading')
      }, 300)
    })
  }
  ossResponsed ? call() : callbacks.push(call)
}

// var server = 'http://10.120.54.70:8082'
// let server = 'http://100.168.1.153:9090'
let server = ''
// 返回在vue模板中的调用接口
let http = {}
http.get = (url, params, success, failure) => {
  return httpBase('GET', server + url, params, success, failure)
}

http.get = (url, params, success, failure) => {
  return httpBase('GET', server + url, params, success, failure)
}

http.post = (url, params, success, failure) => {
  return httpBase('POST', server + url, params, success, failure)
}

http.postString = (url, params, success, failure) => {
  return httpBase('POST', server + url, JSON.stringify(params), success, failure)
}

http.postData = (url, params, success, failure) => {
  let data = new FormData()
  for (var x in params) {
    data.append(x, params[x])
  }
  return httpBase('POST', server + url, data, success, failure)
}

http.upload = (url, params, success, failure) => {
  var post = true
  var data = new window.FormData()
  if (params.uploadIDfile) {
    var obj = document.getElementById(params.uploadIDfile)
    var file = obj.files[0]
    // 验证文件格式
    if (file.type !== 'image/png' && file.type !== 'image/jpeg' && file.type !== '') {
      alert('目前只支持上传png，jpg格式图片')
      post = false
      return false
    }
    // 验证文件大小
    if (params.maxsize) {
      if (obj.size > params.maxsize) {
        post = false
        alert('上传文件不能大于' + parseInt(params.maxsize / 1024) + 'KB')
        return false
      }
    }
    data.append(params.uploadID, file)
    obj.value = ''
  }
  return post && httpBase('POST', server + url, data, success, failure)
}

http.put = (url, params, success, failure) => {
  return httpBase('PUT', server + url, params, success, failure)
}

http.delete = (url, params, success, failure) => {
  return httpBase('DELETE', server + url, params, success, failure)
}

http.install = (Vue, options) => {
  Vue.prototype.$http = http
}

export default http