var _this = this; wx.chooseVideo({ sourceType: ['album', 'camera'], maxDuration: 60, camera: 'back', success(res) { const uploadTask = wx.uploadFile({ url: '', // 上传到服务器 filePath: res.tempFilePath, name: 'file', header: { "Content-Type": "multipart/form-data" }, formData: { fileKey: fileKey }, success(res) { const data = JSON.parse(res.data);// 坑一：与wx.request不同，wx.uploadFile返回的是json字符串，需要自己转为JSON对象格式 console.log(data); } }); uploadTask.onProgressUpdate((res) => { const uploadProgress = res.progress; if(uploadProgress < 100){ // 坑2：wx.uploadFile本身有一个this，所以要通过外部var _this = this 把this带进来 _this.setData({ uploadPercent: uploadProgress }); } else if(uploadProgress === 100){ _this.setData({ uploadPercent: 50 }); } console.log('上传进度', res.progress); console.log('已经上传的数据长度', res.totalBytesSent); console.log('预期需要上传的数据总长度', res.totalBytesExpectedToSend) }); } })
