页面请求参数和servlet跳转页面

r囧r小猫 2024-05-23 14:12 54阅读 0赞

### 页面请求参数和servlet跳转页面 ###

1、新建表单提交页面(index.jsp)  
表单提交到two，设置method的参数值为sea(方便区分页面)

请输入搜索内容
      <form action="/two?method=sea" method="post">
        <input type="text" name="kw" placeholder="请输入"><input type="submit" value="search">
      </form>

![在这里插入图片描述][c32898086ab949669e3b31cf223f6d1e.png]  
2、新建跳转页面（Goods.jsp）

<body>
        <form action="/find?method=search" method="get">
            <input type="text" name="kw" placeholder="请输入"><input type="submit" value="search">
            <table border="1">
                <tr><th>商家ID</th><th>商家店名</th><th>商家地址</th><th>商家电话</th><th>经营菜品</th></tr>
                <%
                    try{
        
                        ArrayList<good> go = (ArrayList<good>)request.getAttribute("glist");
                        for (good goo:go){
        %>
                            <tr><td><%=goo.getId()%></td><td><%=goo.getName()%></td><td><%=goo.getAddress()%></td><td><%=goo.getTelephone()%></td><td><%=goo.getDishes()%></td></tr>
                <%}
                    }catch (Exception e){
        
                    }
                %>
    
            </table>
        </form>
    </body>

![在这里插入图片描述][b0ce3ce0ee364aa5b15cddbfd7b9d3e2.png]

3、新建servlet（two)

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
            response.setCharacterEncoding("utf-8");
            response.setContentType("text/html;charset=UTF-8");
            request.setCharacterEncoding("utf-8");
            String method = request.getParameter("method");
            String show = request.getParameter("kw");       //获取提交过来的文本内容
            //如果提交的内容为admin，则跳转到Goods,jsp页面
            if ("admin".equals(show)){
        		
                request.getRequestDispatcher("Goods.jsp").forward(request,response);
            }
        }

4、测试  
![在这里插入图片描述][6233d6612751417bb2bc30e79abd7e17.png]

[c32898086ab949669e3b31cf223f6d1e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/23/91fe7589c17148f484e510c3c4bb5c75.png
[b0ce3ce0ee364aa5b15cddbfd7b9d3e2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/23/e163956adb5c4ec88d4dafd907697e42.png
[6233d6612751417bb2bc30e79abd7e17.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/23/429d7f0d6e584eca8789a1ab804ac9a6.png