使用ActionRequest ActionResponse将参数从Java类传递到JSP [英] Pass parameter from java class to jsp using ActionRequest Actionresponse

问题描述

我有一个功能说:

 public void display(ActionRequest areq, ActionResponse ares) throws Exception,PortletException,IOException {

 String name= areq.getParameter("name");
 String add= areq.getParameter("add");
 String phone= areq.getParameter("phone");
}

我有一个jsp说disp.jsp，它将用户输入传递到上述功能显示. 现在，在对display()函数中的上述数据进行了一些处理之后，我想将结果显示在一个名为new.jsp的jsp页面上.我应该如何进行呢? 我尝试过类似的事情:

I have a jsp say disp.jsp which passes the user input to the above function display. Now I after doing some processing on the above data in display() function, I want to display the results on a jsp page say new.jsp. How should I go ahead with it? I tried something like:

areq.setAttribute("name",name);
areq.getRequestDispatcher("new.jsp").forward(areq, aresp); but it shows an error that getRequestDispatcher is not defined for actionrequest and actionresponse.

我正在使用liferay框架

I am using liferay framework

推荐答案

在操作中，您可以设置属性并设置重定向页面，如下所示:

In your action you can set attributes and set the redirect page like that:

public void display(ActionRequest aReq, ActionResponse aResp){


    aReq.setAttribute("name",name);

    aResp.setRenderParameter("jspPage", "/new.jsp");
}

我通常更喜欢设置属性而不是参数，因为它允许传递非Sting变量. 然后，在jsp中，您可以获取属性

I Usually prefer setting attributes instead of Parameters, because it allows to pass non Sting variables. Then, in the jsp you can get the attributes

<%
String name = (String)renderRequest.getAttribute("name");   
%>

只要记住包括它，就可以访问renderRequest对象

Just remember to include this, to have access to renderRequest object

<portlet:defineObjects />

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