刷新时将值重置为零 [英] Reset a value to zero upon refresh
本文介绍了刷新时将值重置为零的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在jsp页面中，刷新页面后，变量将保留其值.我想在每次页面刷新时将变量的值分配为零，该怎么做?
In a jsp page, a variable is retaining its value after the page is refreshed. I want to assign a value of a variable to zero every time the page refreshes, how to do that?
<%!
String s[] = new String[100];
String s1[] = new String[100];
int i=0;
%>
<html>
<head>
<s:iterator value="data">
<%
s1[i]=(String)request.getAttribute("build_id");
s[i]=(String)request.getAttribute("bui_id");
i++;
%>
</s:iterator>
</head>
</html>
刷新页面后，这里的i值应重新初始化为零.
Here my i value should be re-initialized to zero, once my page refreshes.
推荐答案
<% i=0; %>将初始化servlet类的实例变量，该变量对于所有请求都是相同的(
<% i=0; %> will initialize an instance variable of your servlet class, which is the same for all requests (see this answer). Initialize your variable here instead:
<s:iterator value="data">
<%
int i = 0; // will be new for every request
s1[i]=(String)request.getAttribute("build_id");
s[i]=(String)request.getAttribute("bui_id");
i++;
%>
</s:iterator>
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