wx.uploadFile（）如何封装promise？
发布于 6 年前 作者 yongliang 16768 次浏览 来自 问答

wx.uploadFile（）不支持多图片上传，

只能用递归。

打算封装成promise

但是我既想resolve出success中的结果，又想监听到uploadTask的上传进度

我该怎么办呢？

resolve 不知道放在哪？

// 上传图片
const uploadImg = (filePath) => {
    return new Promise((resolve, reject) => {
        const uploadTask = wx.uploadFile({
            url: app.globalData.baseUrl + '/wechat/app/common/uploadImage',
            filePath: filePath,
            name: 'file',
            formData: {
                'path': 'm0'
            },
            success: function (res) {
                console.log(res, 888)
                let d = JSON.parse(res.data)
                console.log(d)

                if (res.statusCode == 200 && d.code == 1) {

                  // resolve(res)

                    console.log(d.data)
                } else {
                    wx.showToast({
                        title: '当前网络不佳，请稍后重试',
                        icon: 'none'
                    })
                }
            },
            fail(err) {
                wx.showToast({
                    title: '当前网络不佳，请稍后重试',
                    icon: 'none'
                })
            }
        })
 
        uploadTask.onProgressUpdate((res) => {
            // resolve(res)
            console.log(res)
        })
    })
}

2 回复
let app = getApp();
module.exports = function (url, filePath) {
    return new Promise((resolve, reject) => {
        wx.uploadFile({
            url: `${app.globalData.apiUrl}sys/${url}`,
            filePath,
            name: 'file',
            formData: {
                'user': 'test'
            },
            method: 'POST',
            header: {
                'Authorization': `Bearer${app.globalData.userToken}`
            },
            success: resolve,
            fail: reject
        })
    })
}

const uploadFile = require('../../utils/uploadFile.js');


let files = this.data.files;


let uploads = [];
files.forEach(ele => {
  uploads.push(uploadFile('upload', ele))

})


Promise.all(uploads).then(res=>{
//todo
})

const uploadImg = (filePath,progressCallback) => {

    uploadTask.onProgressUpdate(res=>{

        typeof(progressCallback) == ‘function’ && progressCallback(res)

    })

})

const progressUpdate = function(e){}

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