将值从MenuItemTag传递到.jsp
[英]Passing a value from MenuItemTag to .jsp
问题描述
Situation: 
情况：
I have a .jsp with a Menu and MenuItems, which is being displayed on every other .jsp in the app. 我有一个带菜单和MenuItems的.jsp文件，它正在应用程序中的其他所有.jsp文件中显示。 Three of those MenuItems, at this point in time, each redirect the user to a different .jsp page. 此时，其中的三个MenuItem分别将用户重定向到不同的.jsp页面。 But that is silly because those .jsp's AND the Action classes are almost identical. 但这很愚蠢，因为那些.jsp的AND Action类几乎相同。 So what I want to do is: 所以我想做的是：
- make these 3 different menuitems/links redirect to the same page 使这3个不同的菜单项/链接重定向到同一页面
- send a parameter with when clicking on a link/MenuItem 单击链接/ MenuItem时发送参数
- depending on the value of 'mode': 取决于'mode'的值：
- change the .jsp's layout 更改.jsp的布局
- change the values of variables in the onPostPrintx-actions in the Action class 更改Action类的onPostPrintx-actions中的变量值
- change the .jsp's layout
Code: 码：
JSP-page with code for the Menu Widget : 带有菜单小部件代码的JSP页面：
...
<ui:submenu name="Chapter A">
<ui:menuitem link="/ThisPage.do">Printoption A</ui:menuitem>
<ui:menuitem link="/ThisPage.do">Printoption B</ui:menuitem>
<ui:menuitem link="/ThisPage.do">Printoption C</ui:menuitem>
...
</ui:submenu>
<ui:submenu name="Chapter B">
...
</ui:submenu>
...
JSP-page with the print-buttons ('ThisPage') : 带有打印按钮的JSP页面（'ThisPage'） ：
<html>
<div>
...
<c:set var="mode" value="${PageData.fields.mode}" />
<c:set var="title" value="${val:iif(mode=='1','Option1',val:iif(mode=='2','Option2','Option3'))}" />
...
<body>
<html-el:form action="/Print" method="post" >
<h1>Print ${title}</h1>
<html-el:hidden property="field(mode)"/>
...
(assorted fields to filter output data)
...
<html-el:submit property="event(printPdf)" styleClass="button" style="width=125">Print to .PDF</html-el:submit>
<c:if test="${(mode=='3')}">
<html-el:submit property="event(printWord)" styleClass="button" style="width=125">Print to .DOC</html-el:submit>
</c:if>
...
</div>
</body>
</html>
Action class ('Print') : 动作类（“打印”） ：
...
public ActionForward onPostPrintPdf(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception
{
...
request.setCharacterEncoding("UTF-8");
Connection connection = null;
PageData inForm = ActionUtils.getInputForm(mapping, request, form);
String mode = (String)inForm.getField("mode");
...
(assorted variables, field/variable validation, export to Jasper Report, etc.)
...
return ActionUtils.getInputRedirect(mapping, request, inForm);
}
...
(more actions for more printing options)
...
What I am struggling with: 我正在努力的是：
I am pretty new to Struts (and java) and I have set up everything (within my knowledge) to 'receive' the parameter value and put it in the 'mode' variable. 我对Struts（和Java）还很陌生，我已经设置了一切（据我所知）以“接收”参数值并将其放在“ mode”变量中。 But I'm struggling with 'sending' the value because I can't use things like 'onclick' in the MenuItems. 但是我一直在努力“发送”值，因为我不能在MenuItems中使用“ onclick”之类的东西。
At this point I really don't know how to pass a value to 'mode' when clicking on one of the MenuItems. 此时，我真的不知道如何在单击MenuItems之一时将值传递给“ mode”。
1 个解决方案
解决方案1
1 已采纳 2015-12-04 06:54:07
Thanks to Jimmy for leading me in the right direction! 感谢吉米带领我朝着正确的方向前进！ Here is the solution that works with my code: 这是适用于我的代码的解决方案：
...
<ui:submenu name="Chapter A">
<ui:menuitem link="/ThisPage.do?field(mode)=optionA">Printoption A</ui:menuitem>
<ui:menuitem link="/ThisPage.do?field(mode)=optionB">Printoption B</ui:menuitem>
<ui:menuitem link="/ThisPage.do?field(mode)=optionC">Printoption C</ui:menuitem>
...
</ui:submenu>
<ui:submenu name="Chapter B">
...
</ui:submenu>
...
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