ut type="text" name="username" class="form-control" id="exampleInputEmail1" placeholder="请输入用户名">
            </div>
            <div class="form-group">
                <label for="exampleInputPassword1">密码</label>
                <input type="password" name="password" class="form-control" id="exampleInputPassword1" placeholder="请输入密码">
            </div>
            <div class="form-check">
                <input type="checkbox" name="rememberMe" class="form-check-input" id="exam