jsp子父窗体之间如何传值

在web开发中，经常遇见页面之间的跳转和子父窗体传值等，下面，我就用这个小例子来处理子父窗体的传值

在JSP中，第一次用到一个页面留言的功能，要求提交留言成功后弹出一个小窗口提示留言正确与否，如果留言成功则出现成功页面，关闭此页面，转向网站主页；反之则停留在提交信息页面。

 

                                                       

登陆成功后的页面：

如果登陆用户名为空，到达错误页面

在Struts-config.xml中的配置如下

<action-mappings >     <action       attribute="pageForm"       input="/form/page.jsp"       name="pageForm"       path="/page"       scope="request"       type="com.luojs.struts.action.PageAction" >       <forward name="success" path="/success.jsp"></forward>       <forward name="error" path="/error.jsp"></forward>       </action>     </action-mappings>

在Action 中的代码如下：

public ActionForward execute(ActionMapping mapping, ActionForm form,            HttpServletRequest request, HttpServletResponse response) {        PageForm pageForm = (PageForm) form;// TODO Auto-generated method stub         HttpSession session = request.getSession();        String forward="error";        String name = pageForm.getName();        String pass = pageForm.getPass();         if(null!=name && null != pass){            if(!"".equals(name)&& !"".equals(pass)){                session.setAttribute("name", pageForm.getName());                   forward="success";            }else{               session.setAttribute("err", "you errors (*.*)");            }        }else{           session.setAttribute("err", "name==null || password ==null ");        }             return mapping.findForward(forward);     }

程序布局如下所示；

index.jsp代码清单：

<%@ page language="java" pageEncoding="GBK"%> <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%> <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>   <html>     <head>        <title>JSP for LoginForm form</title>        <script type="text/javascript">             function doSubmit(){                var form=document.form1;                form.action = "page.do";                var openWindow = window.open ('','openWindow',"top = 200,left = 300 ,height=315px,width=394px,scrollbars=no,resizable=no,toolbar=no, menubar=no");                 openWindow.focus();                form.target="openWindow";                form.submit();           }        </script>       </head>     <body>     <h2>提交表单：</h2><hr/>        <form name="form1">&nbsp;&nbsp; name:            <input type="text" name="name" />            &nbsp;&nbsp; pass:            <input type="password" name="pass" />            <input name="login" type="button" onClick="doSubmit()" value="login">        </form>     </body> </html>

 

Login.jsp代码清单如下；

<body>     <h2>提交表单：</h2><hr/>        <form name="form1">&nbsp;&nbsp; name:            <input type="text" name="name" />            &nbsp;&nbsp; pass:            <input type="password" name="pass" />            <input name="login" type="button" onClick="doSubmit()" value="login">        </form>     </body>

Success.jsp代码清单如下：

<%@ page language="java" pageEncoding="GBK"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html>     <head>          <title>My JSP 'index.jsp' starting page</title>                <script language="javascript">                function windowclose(){                     window.opener.location.href="/pageForward/index.jsp";                     window.close();                 }         </script>       </head>       <body>        <form action="" method="post" name="form1">              <input name="welcome" type="button" onClick="windowclose()"               value="点击返回首页"> <h3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;welcome you ${name } （^_^）</h3>        </form>     </body> </html>

Error.jsp代码清单如下：

<%@ page language="java" pageEncoding="GBK"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html>     <head>        <script language="javascript">              function windowclose(){                   window.opener.location.reload();                   window.close();             }       </script>        <title>My JSP 'index.jsp' starting page</title>     </head>     <body>        <h4>&nbsp;&nbsp;&nbsp; ${err}<hr>        </h4><h4><a href="javascript:windowclose();">返回登陆页</a>      </h4>     </body> </html>