js前端本地客户端压缩图片后再上传

from;https://github.com/think2011/localResizeIMG

lrz.js

npm install lrz

//上传文件
    PostFile: function (url, formData) {
        var instance = axios.create({
            timeout: "10000",
            headers: {
                "userid": getCookie("userId"),
                "corpid": getCookie("corpId"),
                "Content-Type": "multipart/form-data"
            }
        });
        instance.interceptors.response.use(function (response) {
          console.log(JSON.stringify(response.data), response.headers.errcode)
          if (JSON.stringify(response.headers) == "{}") {
            vueObj.$children[0].showToast({ message: "上传失败，文件超过6M或网速较慢", timeout: 2000 });
            return Promise.reject(response);
        } else {
            return response;
        }

      }, function (error) {

          if (error.response.status == 429 ) {//超时
              vueObj.$children[0].showToast({ message: "系统繁忙，请稍后再试!", timeout: 2000 });
          }

          if (error.code == "ECONNABORTED" || error.message.indexOf('timeout') > -1 || error.message == 'Network Error' ) {//超时
              vueObj.$children[0].showToast({ message: "请求数据超时，请稍后再试!", timeout: 2000 });
          }

          if (error.response && error.response.status == 500) {
              if (error.response.headers.errcode > 1000 || ['107', '109', '101', '102', '108', '103', '105'].indexOf(error.response.headers.errcode) != -1) {
                  vueObj.$children[0].showToast({ message: decodeURIComponent(error.response.headers.errmsg).replace(new RegExp("\\+", "g"), " "), timeout: 2000 });
              }

          }
          return Promise.reject(error);
      });
        console.log(1111)
        console.log(formData.get("file"))
        return lrz(formData.get("file"), {
            quality: 0.7    //自定义使用压缩方式
        })
            .then(function(rst) {
                console.log(rst)
                console.log(222)
                var file = new File([rst.file], rst.origin.name, {type: rst.origin.type});
                formData.set("file",file);
                return instance.post(url, formData);
            })
            .catch(function(error) {
                //失败时执行
                return Promise.reject(error);
            })
            .always(function() {
                //不管成功或失败，都会执行
            });


        //return instance.post(url, formData);
    },