     <form id="test" role="form" action="/user/addOrEditUser" method="post">
                                    <div class="form-group">
                                        <!-- 表单 -->
                                        <label for="username" class="col-sm-2 control-label">用户名:</label> <!-- 表单 -->
                                        <div class="col-sm-10" style="margin: 0 0 20px">
                                            <input type="text" class="form-control" id="user_name" na