this.deviceTableData = res.body || [];

          // console.log("this.deviceTableData", this.deviceTableData);

          //默认全选

          this.$nextTick(() => {

            for (let i = 0; i < this.deviceTableData.length; i++) {

              this.$refs.multipleTableDevice.toggleRowSelection(

                this.deviceTableData[i],

                true

              );

            }

          });

toggleRowSelection