在JSP中循环遍历ArrayList(Struts) [英] Looping through an ArrayList in JSP (Struts)

问题描述

我正在尝试将我的简单jsp-servlet应用程序转换为struts.我可以将ArrayList从Java类转发到JSP，但是如何遍历它呢?

I am trying to convert my simple jsp-servlet application to struts. I am able to forward an ArrayList from the Java Class to my JSP, but how do I loop through it?

添加一些代码，我有一个字符串数组列表，我需要将其转发到页面，然后将其全部存储到JavaScript数组中.以前我用这个，

Adding some code, I have an ArrayList of Strings that I need to forward to the page and then store all of it into a JavaScript Array. Earlier I was using this,

<% ArrayList<String> request = new ArrayList<String>();
request = (ArrayList<String>) (request.getAttribute("requests"));
%>

<script>
  var requestlog = new Array();
     <%
        for ( int i = 0; i < request.size(); i++ ) {
     %>
         requestlog.push('<%= request.get(i) %>');

     <% } %> 
</script>

任何关于如何进行此操作的想法都将受到欢迎. 我可以使用访问ArrayList的特定成员 var abc ='< s:property value ="requests.get(0)"/>'; 但是，如何循环浏览并存储所有内容呢? 谢谢.

Any ideas as to how to go about it now would be very welcome. I can access the ArrayList's specific members with var abc = '< s:property value="requests.get(0)" / >'; But how do I loop through it and store all of it? Thanks.

推荐答案

转换为struts之后，您可以使用struts逻辑标记.通过设置方法或 session 通过 actionform 设置列表值，然后可以使用<logic:present>标记检查jsp表单内部的列表并使用<logic:iterate>标记可根据属性遍历您的列表.有关实现示例的信息，请参见我的答案.让我知道是否有帮助.

After converting into struts, you can make use of struts logic tags. Set your list value either via actionform by setter method or session, then you can use <logic:present> tag to check the list present inside of your jsp form and use <logic:iterate> tag to iterate through your list based on property. For sample implementation checkout My Answer. Let me know if this helps.

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