 required
                               readonly="readonly">
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label is-required">目标表字段：</label>
                    <div class="col-sm-8">
                        <input class="form-control" type="text" name="toTableFields" id="toTableFields" required
                               readonly="readonly">
                    </div>
                </div>

   