怎么解决多图上传服务器成功后返回的图片id逐一赋给图片？
发布于 5 年前 作者 jun28 2855 次浏览 来自 问答

在本人瞎想到的方法里，到最后一步将返回的id赋给页面属性时不是undefined就是统一设置成最后一张图返回的id。。。求大神们帮解决一下。看下图：

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楼主可以参考下，采用的递归上传，这样能保证顺序性，页面上用的是progressArray循环展示图片，支持上传进度条：

const defaultProgress = {
  uploading: false,
  progressShow: false,
  progress: 0,
  url: '',
  task: {}
};
const defaultApply = {
  id: null,
  sex: 2,
  post: 1,
  onPost: true,
  inspectedRealName: '',
  reason: '',
  imageId: '',
  imageIdArray: [],
  jobImage: '',
  jobImageArray: [],
  progressArray: []
};
 
  //上传图片
  chooseImageClick: function (e) {
    console.info('[chooseImageClick]----->', e);
    let that = this;
    that.setData({
      stageBtnDisabled: true,
      submitBtnDisabled: true
    });
    wx.getLocation({
      success: function (location_res) {
        console.info('[wx.getLocation success]----->', location_res);
        wx.chooseImage({
          sizeType: ['compressed'],
          sourceType: ['camera'],
          success: function (image_res) {
            console.info('[wx.chooseImage success]----->', image_res);
            var filePaths = image_res.tempFilePaths;
            var formData = {
              folder: 'patrol',
              longitude: location_res.longitude,
              latitude: location_res.latitude
            };
            that.judgePrevFile(filePaths, 0, formData);
            //that.recursionUploadFile(filePaths, 0, formData);
            that.setData({
              stageBtnDisabled: false,
              submitBtnDisabled: false
            });
          },
          fail: function (image_res) {
            console.info('[wx.chooseImage fail]----->', image_res);
            if (image_res.errMsg == 'chooseImage:fail auth deny'
                || image_res.errMsg == 'chooseImage:fail:auth denied') {
              app.checkAuthorization({});
            }
            that.setData({
              stageBtnDisabled: false,
              submitBtnDisabled: false
            });
          }
        });
      },
      fail: function (location_res) {
        console.info('[wx.getLocation fail]----->', location_res);
        if (location_res.errMsg == 'getLocation:fail auth deny'
            || location_res.errMsg == 'getLocation:fail:auth denied') {
          app.checkAuthorization({});
        }
        that.setData({
          stageBtnDisabled: false,
          submitBtnDisabled: false
        });
      }
    });
  },
 
  //判断上一个文件是否完成上传
  judgePrevFile: function (filePaths, current, formData) {
    console.info('[judgePrevFile]----->', current);
    var that = this;
    var progressArray = that.data.empJobApply.progressArray;
    if (progressArray.length > 0 && progressArray[progressArray.length - 1].url === '') {
      setTimeout(function () {
        that.judgePrevFile(filePaths, current, formData);
      }, 500);
    } else {
      that.recursionUploadFile(filePaths, current, formData);
    }
  },
 
  //递归上传文件
  recursionUploadFile: function (filePaths, current, formData) {
    console.info('[recursionUploadFile]----->', current);
    console.info('[recursionUploadFile]----->', '开始上传第' + (current + 1) + '个文件');
    var that = this;
    var apply = that.data.empJobApply;
    apply.progressArray.push(Object.assign({}, defaultProgress, {uploading: true, progressShow: true}));
    that.setData({
      empJobApply: apply
    });
 
    var uploadTask = tt.upload({
      url: '/image/upload/single',
      filePath: filePaths[current],
      name: 'image_file',
      formData: formData,
      success: upload_res => {
        console.info('[recursionUploadFile success]----->', upload_res);
        if (upload_res.statusCode && upload_res.statusCode == 413) {
          wx.showToast({title: '文件太大啦！', image: '../../utils/imgs/error-150.png', duration: 3000});
          apply.progressArray.splice(apply.progressArray.length - 1, 1);
          that.setData({
            empJobApply: apply
          });
          return;
        }
        var data = JSON.parse(upload_res.data);
        if (data.status && data.status == 500) {
          wx.showToast({title: '上传出错啦！', image: '../../utils/imgs/error-150.png', duration: 3000});
          apply.progressArray.splice(apply.progressArray.length - 1, 1);
          that.setData({
            empJobApply: apply
          });
          return;
        }
        if (data.suc) {
          apply.imageIdArray.push(data.ext.imageId);
          apply.jobImageArray.push(data.info);
          apply.imageId = apply.imageIdArray.join(',');
          apply.jobImage = apply.jobImageArray.join(',');
          apply.progressArray[apply.progressArray.length - 1].url = data.info;
          apply.progressArray[apply.progressArray.length - 1].uploading = false;
          apply.progressArray[apply.progressArray.length - 1].progressShow = false;
          //wx.showToast({ title: '上传成功！', image: '../../utils/imgs/success-150.png', duration: 3000 });
        } else {
          wx.showToast({title: data.msg, icon: 'none', duration: 3000});
          apply.progressArray.splice(apply.progressArray.length - 1, 1);
        }
        that.setData({
          empJobApply: apply
        });
      },
      fail: upload_res => {
        console.info('[recursionUploadFile fail]----->', upload_res);
        if (upload_res.errMsg == 'uploadFile:fail abort') {
          wx.showToast({
            title: '已取消上传',
            icon: 'none',
            duration: 1500
          });
        } else {
          wx.showToast({
            title: '上传失败！',
            image: '../../utils/imgs/error-150.png',
            duration: 1500
          });
        }
 
        apply.progressArray.splice(apply.progressArray.length - 1, 1);
        that.setData({
          empJobApply: apply
        });
      },
      complete: upload_res => {
        console.info('[recursionUploadFile complete]----->', upload_res);
        if ((current + 1) === filePaths.length) return;
        that.recursionUploadFile(filePaths, ++current, formData);
      }
    });
    apply.progressArray[apply.progressArray.length - 1].task = uploadTask;
    that.setData({
      empJobApply: apply
    });
    //监听上传进度
    uploadTask.onProgressUpdate((progress_res) => {
      apply.progressArray[apply.progressArray.length - 1].progress = progress_res.progress;
      that.setData({
        empJobApply: apply
      });
      console.log('[上传进度]----->', progress_res.progress);
      console.log('[已经上传的数据长度]----->', progress_res.totalBytesSent);
      console.log('[预期需要上传的数据总长度]----->', progress_res.totalBytesExpectedToSend);
    });
    //取消上传任务
    //uploadTask.abort();
  },
 
  //删除上传图片
  deleteImage: function (e) {
    console.info('[deleteImage]----->', e);
    var that = this;
    var ploopIndex = e.currentTarget.dataset.ploopindex;
    var apply = that.data.empJobApply;
    apply.imageIdArray.splice(ploopIndex, 1);
    apply.jobImageArray.splice(ploopIndex, 1);
    apply.imageId = apply.imageIdArray.join(',');
    apply.jobImage = apply.jobImageArray.join(',');
    if (apply.progressArray[ploopIndex] && apply.progressArray[ploopIndex].uploading) {
      apply.progressArray[ploopIndex].task.abort();
    } else {
      apply.progressArray.splice(ploopIndex, 1);
    }
    that.setData({
      empJobApply: apply
    });
  },

用个list专门来存id？然后显示 data-id="{{list[index]}}"

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