handleSubmit() {
        const {form: {validateFields}} = this
        this.confirmLoading = true
        validateFields((errors, values) => {
          if (!errors) {
            for (const key in values) {
              if (typeof (values[key]) === 'object') {
                values[key] = JSON.stringify(values[key])
              }
            }
            iotProductPropertyEdit(values).then((res) => {
              if (res.success) {
                this.$message.success('编辑成功')
                this.confirmLoading = false
                this.$emit('ok', values)
                this.handleCancel()
              } else {
                this.$message.error('编辑失败')//  + res.message
              }
            }).finally((res) => {
              this.confirmLoading = false
            })
          } else {
            this.confirmLoading = false
          }
        })
      },

if (typeof (values[key]) === 'object') {
                values[key] = JSON.stringify(values[key])
              }

if (values[key] && (typeof (values[key]) === 'object')) {
  ...
}