微信小程序api上传和下载内容

微信小程序api上传和下载内容

效果展示

第三个数据提交到这了

wxml

<view class="download">
    <button bindtap="download">下载</button>
    <button bindtap="requestDownload">下载传输</button>
    <button bindtap="requestSever">数据提交</button>
    <button bindtap="upload">上传图片</button>
</view>

js

下面是js中除了生命周期函数之外的部分

var file = "";
Page({
      /**
       * 页面的初始数据
       */
      data: {

      },
      download: function () {
        var downloadProcess = wx.downloadFile({
          url: 'http://www.mvpdj.com/media/attachment/track/201907/20190710_10580128825d25d8ad03d89.mp3',
          success: function (res) {
            console.log("下载完成");
            console.log(res);
            file = res.tempFilePath;
            /*此时文件只是暂时存储到手机中*/
          }
        });
        downloadProcess.onProgressUpdate(function (res) {
          console.log("下载进度", res.progress, "%");
          console.log("已下载的内容", res.totalBytesWritten / 1024, "kb");
          console.log("数据总量", res.totalBytesExpectedToWrite / 1024, "kb");
        })
      },
      requestDownload: function () {
        wx.request({
          url: 'https://developers.weixin.qq.com/miniprogram/dev/component/view.html',
          success: function (res) {
            console.log(res.data);
          }
        });
      },
      requestSever: function () {
        wx.request({
          url: 'http://symlink.dk/code/php/submit',
          data: {
            num1: 10,
            num2: 20
          },
          success: function (res) {
            console.log(res);
          }
        })
      },
      upload: function () {
          wx.chooseImage({
            success: function (res) {
              const tempFile = res.tempFilePaths;
              wx.uploadFile({
                filePath: tempFile[0],
                name: 'name',
                url: '',
                /*这个功能无法演示，找不到能直接接收图片的网页，能接收图片的网页都是封装好的，不能直接用，同时也不能提交给本地*/
                success:function(res){
                  console.log("上传完成");
                  wx.showModal({
                    cancelColor: 'cancelColor',
                    title:"提示",
                    content:"上传完成"
                  });
                  console.log(res.data);
                },
              });
            },
          });
      },
})