小程序多图片上传

    <!-- // 图片上传 -->
    <view class="upLoad_file_box" wx:if="{{offlineSelected}}">
       <view class="file_item file_item_left"   wx:for="{{imgPathArr}}" wx:key="index">
        <view>
          <image  class="file_item_default" src="{{item}}"></image>
          <!-- // 删除图片 -->
          <image data-idx="{{index}}"  bindtap="upHeaderPhotoDel"  class="file_item_del" src="../../../images/del.png"></image>
        </view>
      </view>

       <view class="file_item" style="margin-left:{{imgPathArr.length >0?26:0}}rpx"  wx:if="{{imgPathArr.length < 5}}">   //这里做判断可以让图片最多上传五次则隐藏，同时只有点击这里才可以上传 超过五张隐藏这里
        <view  wx:key="index">
          <image bindtap="upHeaderPhoto"  class="file_item_default" src="../../../images/default.png"></image>
        </view>
        <text class="upload_tex">上传凭证</text>
      </view>
    </view>

.upLoad_file_box {
  width: 660rpx;
  margin: 0 auto;
  margin-top: 43rpx;
  display: flex;
  /* justify-content: space-between; */
}

.file_item {
  position: relative;
  width: 111rpx;
  height: 110rpx;
  text-align: center;
}

.file_item_left {
  margin-left: 26rpx;
}

.file_item_left:first-child {
  margin-left: 0rpx;
}

.file_item_default {
  width: 111rpx;
  height: 110rpx;
}

.file_item_del {
  position: absolute;
  right: -11rpx;
  top: -11rpx;
  width: 30rpx;
  height: 30rpx;
  z-index: 999;
}

.upload_tex {
  font-size: 20rpx;
  color: rgba(199, 199, 199, 1);
  line-height: 34rpx;
}

  // 图片删除
  upHeaderPhotoDel(e) {
    console.log(e.currentTarget.dataset.idx, '删除')
    const that = this;
    let idx = e.currentTarget.dataset.idx
    console.log(that.data.imgPathArr, 'imgPathArr')
    that.data.imgPathArr.splice(idx, 1)
    that.setData({
      imgPathArr: that.data.imgPathArr
    })
  },

  // /线下支付==》上传
  upHeaderPhoto() {
    const that = this;
    wx.chooseImage({
      count: 1,
      sizeType: ['original', 'compressed'],
      sourceType: ['album', 'camera'],
      success(res) {
        console.log(res, '线下支付》上传')
        // tempFilePath可以作为img标签的src属性显示图片
        const tempFilePaths = res.tempFilePaths
        let imgPathArr = []
        tempFilePaths.forEach((item, index) => {
          wx.uploadFile({
            url: api.get_UpdataWxCode,
            filePath: tempFilePaths[index],
            name: 'file',
            formData: {
              'paytype': 1,
              "type": 'paycertificate'
            },
            header: {
              'Content-Type': 'multipart/form-data',
              'X-Requested-With': 'XMLHttpRequest',
              'user-token': wx.getStorageSync('user_token'),
            },
            responseType: 'text',
            success: (res) => {
              console.log(JSON.parse(res.data), '服务器返回的微信图片')
              imgPathArr.push(JSON.parse(res.data).data.src)
              that.setData({
                imgPathArr: that.data.imgPathArr.concat(imgPathArr)
              })
            }
          })
        })

        // }
      }
    })
  },