微信小程序上传图片

//添加图片
  joinPicture: function (e) {
    var index = e.currentTarget.dataset.index;
    var evalList = this.data.evalList;
    var that = this;
    var imgNumber = evalList[index].tempFilePaths;
    if (imgNumber.length >= 3) {
      wx.showModal({
        title: '',
        content: '最多上传三张图片',
        showCancel: false,
      })
      return;
    }
    wx.showActionSheet({
      itemList: ["从相册中选择", "拍照"],
      itemColor: "#f7982a",
      success: function (res) {
        if (!res.cancel) {
          if (res.tapIndex == 0) {
            that.chooseWxImage("album", imgNumber);
          } else if (res.tapIndex == 1) {
            that.chooseWxImage("camera", imgNumber);
          }
        }
      }
    })
  },
  chooseWxImage: function (type, list) {
    var img = list;
    var len = img.length;
    var that = this;
    var evalList = this.data.evalList;
    wx.chooseImage({
      count: 3,
      sizeType: ["original", "compressed"],
      sourceType: [type],
      success: function (res) {
        var addImg = res.tempFilePaths;
        var addLen = addImg.length;
        if ((len + addLen) > 3) {
          for (var i = 0; i < (addLen - len); i++) {
            var str = {};
            str.pic = addImg[i];
            img.push(str);
          }
        } else {
          for (var j = 0; j < addLen; j++) {
            var str = {};
            str.pic = addImg[j];
            img.push(str);
          }
        }
        that.setData({
          evalList: evalList
        })
        that.upLoadImg(img);
      },
    })
  },
  upLoadImg: function (list) {
    var that = this;
    this.upload(that, list);
  },
  //多张图片上传
  upload: function (page, path) {
    var that = this;
    var curImgList = [];
    for (var i = 0; i < path.length; i++) {
      wx.showToast({
        icon: "loading",
        title: "正在上传"
      }),
        wx.uploadFile({
          url: app.globalData.subDomain + '/API/AppletApi.aspx',//接口处理在下面有写
          filePath: path[i].pic,
          name: 'file',
          header: { "Content-Type": "multipart/form-data" },
          formData: {
            douploadpic: '1'
          },
          success: function (res) {
            curImgList.push(res.data);
            var evalList = that.data.evalList;
            evalList[0].imgList = curImgList;
            that.setData({
              evalList: evalList
            })
            if (res.statusCode != 200) {
              wx.showModal({
                title: '提示',
                content: '上传失败',
                showCancel: false
              })
              return;
            }
            var data = res.data
            page.setData({  //上传成功修改显示头像
              src: path[0]
            })
          },
          fail: function (e) {
            wx.showModal({
              title: '提示',
              content: '上传失败',
              showCancel: false
            })
          },
          complete: function () {
            wx.hideToast();  //隐藏Toast
          }
        })
    }
  },
  //删除图片
  clearImg: function (e) {
    var index = e.currentTarget.dataset.index;
    var evalList = this.data.evalList;
    var img = evalList[0].tempFilePaths;
    img.splice(index, 1);
    this.setData({
      evalList: evalList
    })
    this.upLoadImg(img);
  },

data: {
  productInfo: {}
},
//上传图片
uploadImage: function () {
  var that = this;
 
  wx.chooseImage({
    count: 1,  //最多可以选择的图片总数
    sizeType: ['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;
      //启动上传等待中...
      wx.showToast({
        title: '正在上传...',
        icon: 'loading',
        mask: true,
        duration: 10000
      })
 
        wx.uploadFile({
          url: '192.168.1.1/home/uploadfilenew',
          filePath: tempFilePaths[0],
          name: 'uploadfile_ant',
          formData: {
          },
          header: {
            "Content-Type": "multipart/form-data"
          },
          success: function (res) {
            var data = JSON.parse(res.data);
            //服务器返回格式: { "Catalog": "testFolder", "FileName": "1.jpg", "Url": "https://test.com/1.jpg" }
            console.log(data);
          },
          fail: function (res) {
            wx.hideToast();
            wx.showModal({
              title: '错误提示',
              content: '上传图片失败',
              showCancel: false,
              success: function (res) { }
            })
          }
        });
    }
  });
}