uniapp 小程序上传图片

data(){
return{
imgList:[],
imgArr:"",
pingjiaSrc:this.adminIp + "content/image/pingjia.png",
}
}，
methods：{
   ChooseImage() {
        var _this = this;
          uni.chooseImage({
             count: 4, //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'], //从相册选择和拍照
              success: (res) => {
                var tempFilePaths = res.tempFilePaths;
                if (_this.imgList.length+tempFilePaths.length > _this.imgMaxNum) {
                    uni.showToast({
                         title: '超过上传图片的最大数量',
                         icon: 'none'
                    })
                } else {
                     if (_this.imgList.length != 0) {
                      _this.imgList = _this.imgList.concat(res.tempFilePaths);
                        } else {
                           _this.imgList = res.tempFilePaths;
                        }
                for (var i = 0; i < tempFilePaths.length; i++) {
                    let timestamp = new Date().getTime();
                    let enMsg = hex_md5('@' + hex_md5('@' + timestamp + '~') + '~');
                    uni.uploadFile({
                       url: this.adminIp + 'Interface/Interface/UploadImg',//上传的服务器地址
                       filePath: tempFilePaths[i],
                       method: 'POST',
                       name: "file", 
                       formData: {
                        timestamp:timestamp,                                                    
                        enMsg:enMsg                                                         
                        },
                        success: res => {
                           let img = JSON.parse(res.data).data
                           _this.imgArr +=img + ","
                          console.log("上传图片",_this.imgArr);
                        }
                      });
                  }
                }
           }
       });
   },
//查看图片
    lookImg: function(val) {
        const urls = this.imgList
        const current = val
        uni.previewImage({
            urls,
            current
             })
        },
    delect(index){
        uni.showModal({
            title: "提示",
            content: "是否要删除该图片",
            success: (res) => {
                if (res.confirm) {
                this.imgList.splice(index, 1)
                    }
            }
        })
    },
　　

loadFile(url) {
                uni.downloadFile({
                    url: url,
                    success: (res) => {
                        if (res.statusCode === 200) {
                            uni.openDocument({
                                filePath: res.tempFilePath, 
                                // 如果文件名包含中文，建议使用escape(res.tempFilePath)转码，防止ios和安卓客户端导致的差异
                                success: function(res) {
                                    console.log('打开文档成功');
                                }
                            });
                        }
                    }
                });

 

}