Java/JSP/Form Hidden Field
Содержание
Reading Hidden Controls
<source lang="java">
<HTML>
<HEAD> <TITLE>Reading Hidden Controls</TITLE> </HEAD> <BODY>
Reading Hidden Controls
<%
String text = "";
if(request.getParameter("TEXT1") != null) {
out.println("The hidden text is:" + request.getParameter("TEXT1"));
text = request.getParameter("TEXT1");
}
%>
<FORM ACTION="action.jsp" METHOD="POST">
<INPUT TYPE="TEXT" NAME="TEXT1">
<INPUT TYPE="HIDDEN" NAME="HIDDEN"
VALUE="<%= text%>">
<INPUT TYPE="SUBMIT" VALUE="Set Hidden Text">
</FORM>
</BODY>
</HTML>
</source>
Submitting Hidden Fields
<source lang="java">
//File: index.html <HTML>
<HEAD>
<TITLE>Submitting Hidden Fields</TITLE>
</HEAD>
<BODY>
Submitting Hidden Fields
<FORM ACTION="formAction.jsp" METHOD="POST">
<INPUT TYPE="HIDDEN" NAME="HIDDEN" VALUE="Hello from JSP!">
<INPUT TYPE="SUBMIT" VALUE="Submit">
</FORM>
</BODY>
</HTML>
////////////////////////////////////////////////////////////////////// //File: formAction.jsp <HTML>
<HEAD> <TITLE>Reading Hidden Controls</TITLE> </HEAD> <BODY>
Reading Hidden Controls
The hidden text is:
<% out.println(request.getParameter("HIDDEN")); %>
</BODY>
</HTML>
</source>
