jsp跳转问题,不能显示数据库数据，并且不能跳转

Question

展示商品不跳转也不显示后台数据

• https://ask.csdn.net/new?word=&spm=1001.2014.3001.5354#
  • https://ask.csdn.net/new?word=&spm=1001.2014.3001.5354#goods
    https://ask.csdn.net/new?word=&spm=1001.2014.3001.5354# 添加商品信息

  •             <li class="nav-item"><a class="nav-link" data-toggle="collapse"
                    href="#goodstype">商品类型管理 </a>
                    <div id="goodstype" class="collapse" data-parent="#menu">
                        <div class="list-group">
                            <a href="#" class="list-group-item list-group-item-action" id="getgoodstype">查看商品类型</a>
                            <a href="#" class="list-group-item list-group-item-action" id="addGoodsType">添加商品类型</a>
                        </div>
                    </div></li>
            </div>
        </ul>
        <div id="content-wrapper" class="d-flex flex-column">
        
            <nav class="shadow  mb-3 navbar navbar-expand  navbar-while bg-while  static-top justify-content-end">
                  <ul class="navbar-nav">
                    <li class="nav-item"><a href="#">admin </a></li>
                  </ul>
            </nav>
            <iframe class="dv_content flex-grow-1" frameborder="0" scrolling="yes">
                  
            </iframe>
            <footer>
               <div class="container bg-white mb-3 p-3">
                 <div class="copyright text-center">版权所有&copy; 东华理工大学长江学院 2020</div>
               </div>
            </footer>
        </div>
    
    </div> 
    

Answer 1

没看见有jsp取数据的操作捏，是不是图贴错了