问题描述
在没有添加form表单前删除全部按钮的功能能用但是加上form表单之后就不行了加入form表单的原因是向ShoppingCartServlet发送flag=update完成修改数量的功能谢谢指点代码如下：<scripttype="text/javascript"><!--functiondeleteAll(){window.open("ShoppingCartServlet?flag=deleteAll","_self");}--></script><formaction="ShoppingCartServlet?flag=update"method="post"><tablewidth="100%"border="1"cellspacing="0"cellpadding="0"class="style1"><tr><tdcolspan="6"align="center"><imgsrc="images/cartnavi-1.gif"width="599"height="49"/></td></tr><tr><tdwidth="23%"align="center">编号</td><tdwidth="24%"align="center">名称</td><tdwidth="27%"align="center">单价</td><tdcolspan="3">数量</td></tr><%if(al!=null){for(inti=0;i<al.size();i++){GoodsBeangb=(GoodsBean)al.get(i);%><tr><tdalign="center"><%=gb.getGoodsId()%></td><tdalign="center"><%=gb.getGoodsName()%></td><tdalign="center">￥<%=gb.getGoodsPrice()%></td><tdwidth="11%"><label><inputtype="hidden"name="goodsId"value="<%=gb.getGoodsId()%>"><inputname="goodsNum"type="text"size="7"value="<%=scm.getGoodsNum(gb.getGoodsId()+"")%>"/></label></td><tdwidth="8%"align="center"><ahref="ShoppingCartServlet?flag=deleteGoods&goodsId=<%=gb.getGoodsId()%>">删除</a></td><tdwidth="7%"align="center"><ahref="ShowGoodsServlet?flag=showInfo&goodsId=<%=gb.getGoodsId()%>">查看</a></td></tr><%}}else{%><tr><tdalign="center">无</td><tdalign="center">无</td><tdalign="center">￥0.00</td><tdwidth="11%"><label>0</label></td><tdwidth="8%"align="center">删除</td><tdwidth="7%"align="center">查看</td></tr><%}%><tr><td> </td><tdalign="center"><inputtype="submit"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/></td><tdalign="center"><inputtype="submit"name="upDate"value="修改数量"/></td><tdcolspan="3"> </td></tr><tr><tdcolspan="6"> </td></tr><%if(al!=null){%><tr><tdcolspan="2">您共选择了价值￥<%=scm.getTotal()%>的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><imgsrc="images/cartnext.gif"width="87"height="19"/></td></tr><%}else{%><tr><tdcolspan="2">您共选择了价值￥0.00的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><imgsrc="images/cartnext.gif"width="87"height="19"/></td></tr><%}%></table></form>
解决方案
解决方案二：
submit改为button，应该就可以吧
解决方案三：
<inputtype="submit"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>改成：<inputtype="button"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>试试
解决方案四：
引用1楼hollin1988的回复:
submit改为button，应该就可以吧
我试了还是不行啊但是把<formaction="ShoppingCartServlet?flag=update"method="post"></form>删掉就可以了是不是因为我的script语法写在<head></head>中了？全部代码：<%@pagelanguage="java"import="java.util.*,com.wj.model.*"pageEncoding="gbk"%><%Stringpath=request.getContextPath();StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";//接受要显示的goods信息ArrayListal=(ArrayList)request.getAttribute("goodsInfo");//System.out.println("al.size="+al.size());//得到scmShoppingCartManagescm=(ShoppingCartManage)request.getSession().getAttribute("shoppingCart");//HashMaphm=(HashMap)request.getAttribute("hm");%><!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"><html><head><basehref="<%=basePath%>"><title>MyJSP'showShoppingCart.jsp'startingpage</title><metahttp-equiv="pragma"content="no-cache"><metahttp-equiv="cache-control"content="no-cache"><metahttp-equiv="expires"content="0"><metahttp-equiv="keywords"content="keyword1,keyword2,keyword3"><metahttp-equiv="description"content="Thisismypage"><linkrel="stylesheet"type="text/css"href="css/my.css"><scripttype="text/javascript"><!--functiondeleteAll(){window.open("ShoppingCartServlet?flag=deleteAll","_self");}--></script></head><bodytopmargin="0"background="images/bg.bmp"><tablewidth="80%"border="1"align="center"cellpadding="0"cellspacing="0"class="style1"><tr><td><jsp:includepage="head.jsp"></jsp:include></td></tr><trclass="style1"><td><formaction="ShoppingCartServlet?flag=update"method="post"><tablewidth="100%"border="1"cellspacing="0"cellpadding="0"class="style1"><tr><tdcolspan="6"align="center"><imgsrc="images/cartnavi-1.gif"width="599"height="49"/></td></tr><tr><tdwidth="23%"align="center">编号</td><tdwidth="24%"align="center">名称</td><tdwidth="27%"align="center">单价</td><tdcolspan="3">数量</td></tr><%if(al!=null){for(inti=0;i<al.size();i++){GoodsBeangb=(GoodsBean)al.get(i);%><tr><tdalign="center"><%=gb.getGoodsId()%></td><tdalign="center"><%=gb.getGoodsName()%></td><tdalign="center">￥<%=gb.getGoodsPrice()%></td><tdwidth="11%"><label><inputtype="hidden"name="goodsId"value="<%=gb.getGoodsId()%>"><inputname="goodsNum"type="text"size="7"value="<%=scm.getGoodsNum(gb.getGoodsId()+"")%>"/></label></td><tdwidth="8%"align="center"><ahref="ShoppingCartServlet?flag=deleteGoods&goodsId=<%=gb.getGoodsId()%>">删除</a></td><tdwidth="7%"align="center"><ahref="ShowGoodsServlet?flag=showInfo&goodsId=<%=gb.getGoodsId()%>">查看</a></td></tr><%}}else{%><tr><tdalign="center">无</td><tdalign="center">无</td><tdalign="center">￥0.00</td><tdwidth="11%"><label>0</label></td><tdwidth="8%"align="center">删除</td><tdwidth="7%"align="center">查看</td></tr><%}%><tr><td> </td><tdalign="center"><inputtype="button"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/></td><tdalign="center"><inputtype="submit"name="upDate"value="修改数量"/></td><tdcolspan="3"> </td></tr><tr><tdcolspan="6"> </td></tr><%if(al!=null){%><tr><tdcolspan="2">您共选择了价值￥<%=scm.getTotal()%>的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><ahref="ShoppingCartManage2"><imgborder="0"src="images/cartnext.gif"width="87"height="19"/></a></td></tr><%}else{%><tr><tdcolspan="2">您共选择了价值￥0.00的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><imgsrc="images/cartnext.gif"width="87"height="19"/></td></tr><%}%></table></form></td></tr><tr><td><jsp:includepage="tail.jsp"></jsp:include></td></tr></table></body></html>
解决方案五：
引用2楼iinbase的回复:
<inputtype="submit"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>改成：<inputtype="button"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>试试
我试了还是不行啊但是把<formaction="ShoppingCartServlet?flag=update"method="post"></form>删掉就可以了是不是因为我的script语法写在<head></head>中了？全部代码：<%@pagelanguage="java"import="java.util.*,com.wj.model.*"pageEncoding="gbk"%><%Stringpath=request.getContextPath();StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";//接受要显示的goods信息ArrayListal=(ArrayList)request.getAttribute("goodsInfo");//System.out.println("al.size="+al.size());//得到scmShoppingCartManagescm=(ShoppingCartManage)request.getSession().getAttribute("shoppingCart");//HashMaphm=(HashMap)request.getAttribute("hm");%><!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"><html><head><basehref="<%=basePath%>"><title>MyJSP'showShoppingCart.jsp'startingpage</title><metahttp-equiv="pragma"content="no-cache"><metahttp-equiv="cache-control"content="no-cache"><metahttp-equiv="expires"content="0"><metahttp-equiv="keywords"content="keyword1,keyword2,keyword3"><metahttp-equiv="description"content="Thisismypage"><linkrel="stylesheet"type="text/css"href="css/my.css"><scripttype="text/javascript"><!--functiondeleteAll(){window.open("ShoppingCartServlet?flag=deleteAll","_self");}--></script></head><bodytopmargin="0"background="images/bg.bmp"><tablewidth="80%"border="1"align="center"cellpadding="0"cellspacing="0"class="style1"><tr><td><jsp:includepage="head.jsp"></jsp:include></td></tr><trclass="style1"><td><formaction="ShoppingCartServlet?flag=update"method="post"><tablewidth="100%"border="1"cellspacing="0"cellpadding="0"class="style1"><tr><tdcolspan="6"align="center"><imgsrc="images/cartnavi-1.gif"width="599"height="49"/></td></tr><tr><tdwidth="23%"align="center">编号</td><tdwidth="24%"align="center">名称</td><tdwidth="27%"align="center">单价</td><tdcolspan="3">数量</td></tr><%if(al!=null){for(inti=0;i<al.size();i++){GoodsBeangb=(GoodsBean)al.get(i);%><tr><tdalign="center"><%=gb.getGoodsId()%></td><tdalign="center"><%=gb.getGoodsName()%></td><tdalign="center">￥<%=gb.getGoodsPrice()%></td><tdwidth="11%"><label><inputtype="hidden"name="goodsId"value="<%=gb.getGoodsId()%>"><inputname="goodsNum"type="text"size="7"value="<%=scm.getGoodsNum(gb.getGoodsId()+"")%>"/></label></td><tdwidth="8%"align="center"><ahref="ShoppingCartServlet?flag=deleteGoods&goodsId=<%=gb.getGoodsId()%>">删除</a></td><tdwidth="7%"align="center"><ahref="ShowGoodsServlet?flag=showInfo&goodsId=<%=gb.getGoodsId()%>">查看</a></td></tr><%}}else{%><tr><tdalign="center">无</td><tdalign="center">无</td><tdalign="center">￥0.00</td><tdwidth="11%"><label>0</label></td><tdwidth="8%"align="center">删除</td><tdwidth="7%"align="center">查看</td></tr><%}%><tr><td> </td><tdalign="center"><inputtype="button"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/></td><tdalign="center"><inputtype="submit"name="upDate"value="修改数量"/></td><tdcolspan="3"> </td></tr><tr><tdcolspan="6"> </td></tr><%if(al!=null){%><tr><tdcolspan="2">您共选择了价值￥<%=scm.getTotal()%>的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><ahref="ShoppingCartManage2"><imgborder="0"src="images/cartnext.gif"width="87"height="19"/></a></td></tr><%}else{%><tr><tdcolspan="2">您共选择了价值￥0.00的商品，点击<ahref="index.jsp">此处</a>继续购物。</td><tdcolspan="4"align="right"><imgsrc="images/cartnext.gif"width="87"height="19"/></td></tr><%}%></table></form></td></tr><tr><td><jsp:includepage="tail.jsp"></jsp:include></td></tr></table></body></html>
解决方案六：
<inputtype="submit"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>LS说的把submit改为button点击后触发这个onclick，就是这个函数functiondeleteAll(){alert（“测试”）；window.open("ShoppingCartServlet?flag=deleteAll","_self");}看触发这个事件没！应该就可以了。
解决方案七：
你先测试下alert一句话出来看函数有没有调用
解决方案八：
对，<inputtype="submit"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>改成：<inputtype="button"name="deleteAll"value="删除全部书籍"onclick="deleteAll()"/>试试应该就没有问题了。
解决方案九：
submit是表单提交，会把表单数据一起提交到后台onclick里面你要把提交的数据封装好提交到后台才行<inputtype="hidden"name="goodsId"value="<%=gb.getGoodsId()%>"><inputname="goodsNum"type="text"size="7"value="<%=scm.getGoodsNum(gb.getGoodsId()+"")%>"/>这两个的值肯定没有传到后台
解决方案十：
你既然是异步提交，干嘛还写<formaction="ShoppingCartServlet?flag=update"method="post">
解决方案十一：
一堆垃圾回复。人家都说了不行了！