Java/JSP/Form TextField
Версия от 18:01, 31 мая 2010; (обсуждение)
Form TextField Demo
//File: index.html
<html>
<body>
<h1>Hello Web Application</h1>
<form action="hello.jsp" method="POST" >
<table width="75%">
<tr>
<td width="48%">What is your name?</td>
<td width="52%">
<input type="text" name="name" />
</td>
</tr>
</table>
<p>
<input type="submit" name="Submit" value="Submit name" />
<input type="reset" name="Reset" value="Reset form" />
</p>
</form>
</body>
</html>
//File: hello.jsp
<html>
<head>
<title>Hello Web Application</title>
</head>
<body>
<h1>Hello Web Application</h1>
<br/><br/>
<%
String name = request.getParameter("name");
if (name.trim().length() == 0) {
%>
You did not tell me your name!<br><br><br>
<%
} else {
%>
Hello <%=name%><br><br><br>
<%
}
%>
== Inserting Text into Text Fields ==
<!-- start source code -->
<source lang="java">
//File: index.html
<HTML>
<HEAD>
<TITLE>Inserting Text into Text Fields</TITLE>
</HEAD>
<BODY>
<H1>Inserting Text into Text Fields</H1>
<FORM NAME="form1" ACTION="formAction.jsp" METHOD="POST">
<INPUT TYPE="TEXT">
<INPUT TYPE="SUBMIT" VALUE="Click Me!">
</FORM>
</BODY>
</HTML>
//File: formAction.jsp
<HTML>
<HEAD>
<TITLE>Inserting Text into Text Fields</TITLE>
</HEAD>
<BODY>
<H1>Inserting Text into Text Fields</H1>
<FORM NAME="form1">
<INPUT TYPE="TEXT" VALUE="Hello from JSP!">
<INPUT TYPE="SUBMIT" VALUE="Click Me!">
</FORM>
</BODY>
</HTML>
Submitting Text Fields
//File: index.html
<HTML>
<HEAD>
<TITLE>Submitting Text Fields</TITLE>
</HEAD>
<BODY>
<H1>Submitting Text Fields</H1>
<FORM ACTION="formAction.jsp" METHOD="POST">
Please enter your name:
<INPUT TYPE="TEXT" NAME="text1">
<BR>
<INPUT TYPE="SUBMIT" value="Submit">
</FORM>
</BODY>
<HTML>
/////////////////////////////////////////////////////////////////////////
//File: formAction.jsp
<HTML>
<HEAD>
<TITLE>Reading Data From Text Fields</TITLE>
</HEAD>
<BODY>
<H1>Reading Data From Text Fields</H1>
Your name is
<% out.println(request.getParameter("text1")); %>
</BODY>
</HTML>
Submitting Text Fields 2
//File: index.html
<HTML>
<HEAD>
<TITLE>Submitting Text Fields</TITLE>
</HEAD>
<BODY>
<H1>Submitting Text Fields</H1>
<FORM ACTION="formAction.jsp" METHOD="POST">
Please enter your name:
<INPUT TYPE="TEXT" NAME="text1">
<BR>
<INPUT TYPE="SUBMIT" value="Submit">
</FORM>
</BODY>
<HTML>
//File:formAction.jsp
<HTML>
<HEAD>
<TITLE>Decoding an HTTP Request</TITLE>
</HEAD>
<BODY>
<H1> Request Information </H1>
JSP request method: <%= request.getMethod() %>
<BR>
URL for the request: <%= request.getRequestURI() %>
<BR>
Protocol of the request: <%= request.getProtocol() %>
<BR>
Server name: <%= request.getServerName() %>
<BR>
Path: <%= request.getServletPath() %>
<BR>
Server port: <%= request.getServerPort() %>
<BR>
Remote address: <%= request.getRemoteAddr() %>
<BR>
Remote host: <%= request.getRemoteHost() %>
<BR>
Locale: <%= request.getLocale() %>
<BR>
User agent: <%= request.getHeader("User-Agent") %>
</BODY>
</HTML>
