Java/JSTL/Form TextField
Версия от 18:01, 31 мая 2010; (обсуждение)
Содержание
JSTL Form Action: Get TextField Value
<html>
<head>
</head>
<body>
<form method="POST" action="form2.jsp">
<table border="1" cellpadding="0" cellspacing="0"
style="border-collapse: collapse" bordercolor="#111111"
width="42%" id="AutoNumber1">
<tr>
<td width="100%" colspan="2" bgcolor="#0000FF">
<p align="center">
<b>
<font size="4" color="#FFFFFF">Please Login</font>
</b>
</p>
</td>
</tr>
<tr>
<td width="19%">User Name</td>
<td width="81%">
<input type="text" name="uid" size="20" />
</td>
</tr>
<tr>
<td width="19%">Password</td>
<td width="81%">
<input type="password" name="pwd" size="20" />
</td>
</tr>
<tr>
<td width="100%" colspan="2">
<p align="center">
<input type="submit" value="Submit" name="action" />
<input type="reset" value="Reset" name="B2" />
</p>
</td>
</tr>
</table>
</form>
<p align="left">
<i>Note: you may use any ID/Password, security is not
checked.</i>
</p>
</body>
</html>
///////////////////////////////////////////////////////////
//File: form2.jsp
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %>
<html>
<h3>Welcome back
<c:out value="${param.uid}" />
!</h3>
</html>
JSTL Form: Using TextField
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %>
<c:if test="${pageContext.request.method=="POST"}">
<c:choose>
<c:when test="${param.add!=null}">
<c:if test="${list!=null}">
<c:set var="list" value="${list}," scope="session" />
</c:if>
<c:set var="list" value="${list}${param.item}"
scope="session" />
</c:when>
<c:when test="${param.remove!=null}">
<c:set var="list2" value="" />
<c:forEach var="item" items="${list}">
<c:if test="${item!=param.item}">
<c:if test="${list2!=""}">
<c:set var="list2" value="${list2}," />
</c:if>
<c:set var="list2" value="${list2}${item}" />
</c:if>
</c:forEach>
<c:set var="list" value="${list2}" scope="session" />
<c:remove var="list2" />
</c:when>
</c:choose>
</c:if>
<html>
<head>
<title>Updatable Collections</title>
</head>
<body>
<table border="0">
<form method="post">
<tr bgcolor="blue">
<td colspan="2">
<font color="white">Updatable Collections</font>
</td>
</tr>
<tr>
<td valign="top">
<select NAME="choice" SIZE="5" width="20">
<c:forEach var="item" items="${list}">
<option>
<c:out value="${item}" />
</option>
</c:forEach>
</select>
</td>
<td valign="top">Enter a item to add or remove.
<br />
<input width="20" maxwidth="20" name="item" size="20" />
<br />
<input type="submit" name="add" value="Add" />
<input type="submit" name="remove" value="Remove" />
</td>
</tr>
</form>
</table>
</body>
</html>
JSTL Submit Form TextField Action
<html>
<head>
<title>Page Data Example</title>
</head>
<body>
<table border="1">
<form method="POST" action="params2.jsp">
<tr>
<td width="33%">
<b>First Name</b>
</td>
<td width="73%">
<input type="text" name="first" size="40" />
</td>
</tr>
<tr>
<td width="33%">
<b>Last Name</b>
</td>
<td width="73%">
<input type="text" name="last" size="40" />
</td>
</tr>
<tr>
<td width="33%">
<b>Address</b>
</td>
<td width="73%">
<input type="text" name="address" size="40" />
</td>
</tr>
<tr>
<td width="33%">
<b>City</b>
</td>
<td width="73%">
<input type="text" name="city" size="20" />
</td>
</tr>
<tr>
<td width="33%">
<b>State</b>
</td>
<td width="73%">
<input type="text" name="state" size="20" />
</td>
</tr>
<tr>
<td width="33%">
<b>ZIP</b>
</td>
<td width="73%">
<input type="text" name="zip" size="20" />
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit" name="action" />
<input type="reset" value="Reset" name="action" />
</td>
</tr>
</form>
</table>
</body>
</html>
///////////////////////////////////////////////////////////////////////////
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %>
<html>
<head>
<title>Page Data Example</title>
</head>
<body>
<table border="1" width="310">
<tr>
<td bgcolor="#0000FF" width="98">
<b>
<font color="#FFFFFF" size="4">Name</font>
</b>
</td>
<td bgcolor="#0000FF" width="196">
<b>
<font color="#FFFFFF" size="4">Value</font>
</b>
</td>
</tr>
<c:forEach var="aItem" items="${paramValues}">
<tr>
<td width="98">
<b>
<c:out value="${aItem.key}" />
</b>
</td>
<td width="196"> 
<c:forEach var="aValue" items="${aItem.value}">
<c:out value="${aValue}" />
</c:forEach>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
Property Access
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %>
<html>
<head>
<title>Property Access</title>
</head>
<body>
<c:if test="${pageContext.request.method=="POST"}">
<c:set var="idx" value="name" />
param.name =
<c:out value="${param.name}" />
<br />
param[name] =
<c:out value="${param[idx]}" />
<br />
</c:if>
<br />
<form method="post">Please enter your name?
<input type="text" name="name" />
<input type="Submit" />
<br />
</form>
</body>
</html>
