微信小程序多图上传

选择图片wx.chooseImage

上传图片wx.uploadFile

---

1. 点击选择图片

chooseImg: function () {    var that = this;    var selectImg = that.data.selectImg;    wx.chooseImage({      count: 5,      sizeType: ['original', 'compressed'],      sourceType: ['album', 'camera'],      success: function (res) {        var tempFilePaths = res.tempFilePaths        if (tempFilePaths.length + selectImg.length > 5) {          that.tips('最多只能上传5张')        } else {          for (var i = 0; i < tempFilePaths.length; i++) {            selectImg.push(tempFilePaths[i])            // that.uploadImg(tempFilePaths[i])          }          that.setData({            selectImg: selectImg          })          console.log(selectImg);        }      },      fail: function () {        that.tips('选取图片失败')      }    })  },

1. 提交表单，遍历selectImg ，调用uploadImg()进行图片一张张上传。
2. 上传图片

uploadImg: function (img,fn){    var that = this;    var imgs = that.data.imgs;    app.getLoginSession(function (session) {      wx.uploadFile({        url: app.api,        filePath: img,        name: 'file',        formData: {          app: 'farm',          act:'upload_file',          filePath: img,          t_session: session        },        method: 'POST',        header: {          'content-type': 'multipart/form-data'        },        success: function (res) {          var data = JSON.parse(res.data);          var rlt = data.retval;          if (data.done) {            imgs.push(rlt.save_path);            that.setData({              imgs:imgs            })            console.log("sss"+that.data.imgs)            typeof fn == 'function' && fn();          } else {            console.log(data);            that.tips('图片上传失败')          }        },        fail:function(){          console.log("失败");        }      })    })  },