-1
我有三個jsp頁面:annotation.jsp,check.jsp和end.jsp。我從check.jsp重定向到annotation.jsp或根據條件重定向到end.jsp。在重定向的同時,我也傳遞了一個變量。在重定向jsp頁面時傳遞變量
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>
我想知道這個變量是否通過與否與此類型的重定向?因爲我在來自check.jsp的annotation.jsp中獲取了null值。