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我有三个jsp页面:annotation.jsp,check.jsp和end.jsp。我从check.jsp重定向到annotation.jsp或根据条件重定向到end.jsp。在重定向的同时,我也传递了一个变量。在重定向jsp页面时传递变量
Annotation.jsp:
<%@page language="java"%>
<%@ page import="java.io.*" %>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Annotation Page</title>
</head>
<body>
<%
String user = request.getParameter("user");
%>
<form method="get" action="check.jsp">
<input type="hidden" name="user" value="<%=user%>">
<input type="radio" name="similarity" value="Similar"> Similar<br>
<input type="radio" name="similarity" value="Dissimilar"> Dissimilar<br>
<input type="submit" name="submit" value="Submit">
</form>
</body>
</html>
Check.jsp:
<%@page import="java.io.*"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form method="get">
<%
String user = request.getParameter("user");
if (condition) {
String redirectURL1 = "annotation.jsp";
response.sendRedirect(redirectURL1);
} else {
String redirectURL2 = "end.jsp";
response.sendRedirect(redirectURL2);
}
%>
<input type="hidden" name="user" value="<%=user%>">
</form>
</body>
</html>
我想知道这个变量是否通过与否与此类型的重定向?因为我在来自check.jsp的annotation.jsp中获取了null值。