微信小程序 上传图片（多张/单张）

微信小程序 上传图片

abc.wxml页面

<view class="three">图片view>
  <view class="weui-uploader">
    <view class='pics' wx:for="{{imgs}}" wx:for-item="item" wx:key="*this">
        <image class='weui-uploader__img' src="{{item}}" data-index="{{index}}" mode="aspectFill" bindtap="previewImg">
                  <icon type='cancel' class="delete-btn" data-index="{{index}}" catchtap="deleteImg">icon>
        image>
    view>

    <view class="tp_cont {{tj_ycang?'':'hide'}}" bindtap="chooseImg">
      <view class="tp_add">+view>
    view>

view>

abc.js页面

// pages/abc/abc.js
const app = getApp();

Page({

    data: {
        imgs: []
       },
      // 上传图片
       chooseImg: function (e) {
        var that = this;
        var imgs = this.data.imgs;
        if (imgs.length >= 9) {
         this.setData({
          lenMore: 1
         });
         setTimeout(function () {
          that.setData({
           lenMore: 0
          });
         }, 2500);
         return false;
        }
        wx.chooseImage({
         // count: 1, // 默认9
         sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
         sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
         success: function (res) {
          // 返回选定照片的本地文件路径列表，tempFilePath可以作为img标签的src属性显示图片
          var tempFilePaths = res.tempFilePaths;
          var imgs = that.data.imgs;
          // console.log(tempFilePaths + '----');
          for (var i = 0; i < tempFilePaths.length; i++) {
           if (imgs.length >= 9) {
            that.setData({
             imgs: imgs
            });
            return false;
           } else {
            imgs.push(tempFilePaths[i]);
           }
          }
          // console.log(imgs);
          that.setData({
           imgs: imgs
          });


          
            wx.uploadFile({
                url: getApp().globalData.url+'/home/login/uploadQuestionFile', //接受图片的接口地址
                filePath: tempFilePaths[0],
                name: 'file',
                formData: {
                    'user': 'test'
                },
                success (res){
                    console.log(res);
                    const data = res.data
                    //do something
                }
            })

         }
        });
       },
       // 删除图片
       deleteImg: function (e) {
        var imgs = this.data.imgs;
        var index = e.currentTarget.dataset.index;
        imgs.splice(index, 1);
        this.setData({
         imgs: imgs
        });
       },
       // 预览图片
       previewImg: function (e) {
         //获取当前图片的下标
        var index = e.currentTarget.dataset.index;
         //所有图片
        var imgs = this.data.imgs;
        wx.previewImage({
         //当前显示图片
         current: imgs[index],
         //所有图片
         urls: imgs
        })
       }
      
      
})

abc.wxss页面

/* 图片 */
.three{
  margin-top: 27rpx;
}
.weui-uploader{
  margin-top: 16rpx;
}
.tp_add{
  width: 152rpx;
  height: 152rpx;
  border-radius: 10rpx;
  opacity: 1;
  border: 2rpx dashed #999999;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 59rpx;
}

.pics {
  float:left;
  position:relative;
  margin-right:15px;
  margin-bottom:15px;
  }
  .pics image{
    width: 152rpx;
    height: 152rpx;
  }
  .delete-btn{
    width: 20rpx;
    height: 20rpx;
    position: absolute;
    top: -15rpx;
    right: -5rpx;
  }
  .weui-uploader{
    padding: 10rpx;
  }