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JSTL compare string

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Join Date: Aug 2005

Posts: 1

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hellofriend hellofriend is offline

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JSTL compare string

Aug 26th, 2005

hi, :p

i am trying to achieve a registration page in JSP. i am using tag library to do this.

c tag library and Sql tag library.

 Help with Code Tags 
 JSP Syntax (Toggle Plain Text) 
 
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<c:if test="${param.submitted}">
	<c:if test="${empty param.name}" var="noname" />
	<c:if test="${empty param.pw}" var="nopw" />
	<c:if test="${empty param.cpw}" var="nocpw" />
<c:if
test="${not (noname or nopw or nocpw or requestScope.takenName)}">
 
<c:set value="${param.name}" var="name" scope="request" />
<c:set value="${param.pw}" var="pw" scope="request" />
<c:set value="${param.cpw}" var="cpw" scope="request" />
 
<jsp:forward page="postregister.jsp"/>
 
	</c:if>
		</c:if>
 
<html>
<head> 
</head>
<body bgcolor="CFECEC" >
 
<form method="post" name="frmRegister">
<input type="hidden" name="submitted" value="true"/>
 
<script type="text/javascript">
 
<!--
 
	function add_onclick() {
 
		var TRUE = new Boolean("True")
		var FALSE = new Boolean("False")
 
		blnError = FALSE
		strError = "The following problems were found in your registration form: \n\n"
 
		if (frmRegister.name.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must provide a Login Name\n"
			};
 
		if (frmRegister.pw.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must provide a Password\n"
			};
		if (frmRegister.cpw.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must confirm your Password\n"
			};
 
		if (frmRegister.pw.value != frmRegister.cpw.value)
			{
				blnError = TRUE
				strError = strError + " - Your Password does not match\n"
			};
 
		if (blnError == TRUE)
			{
				strError = strError + "\nPlease correct these mistakes and try again."
				alert(strError)				
			}
		else
			{
				frmRegister.submit()
			};				
 
	}
 
	//-->
	</SCRIPT>
 
<p align="left"><b> Register <hr> </p>
<p align="center"><b>Please complete the following registration form</b>  <hr><br><br>
 
<img src="dmu.jpg" alt="DMU University" align="left">
<img src="dmu.jpg" alt="DMU University" align="right">
 
<table BORDER="0" ALIGN="CENTER" VALIGN="TOP" CELLPADDING=2 CELLSPACING=0>
<tr> 
<td><Strong>Username</strong></td>
<td><input type="text" name="name" value="<c:out value="${param.name}" />"
/>
 
</td>
</tr>
 
<tr> 
<td><Strong>Password</strong></td>
<td> <input type="password" name="pw"  value="<c:out value="${param.pw}"/>"
/>
 
<tr> 
<td><Strong>Confirm password</strong></td>
<td> <input type="password" name="cpw"  value="<c:out value="${param.cpw}"/>"
/>
 
<tr><td>&nbsp;</td>
<td><input type="submit" value="register"LANGUAGE=javascript onclick="return add_onclick()" />
</td>
</tr>
 
</table>
<img src="dmu.jpg" alt="DMU University" align="left">
<img src="dmu.jpg" alt="DMU University" align="right">
 
</form>
</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<c:if test="${param.submitted}">
	<c:if test="${empty param.name}" var="noname" />
	<c:if test="${empty param.pw}" var="nopw" />
	<c:if test="${empty param.cpw}" var="nocpw" />
<c:if
test="${not (noname or nopw or nocpw or requestScope.takenName)}">

<c:set value="${param.name}" var="name" scope="request" />
<c:set value="${param.pw}" var="pw" scope="request" />
<c:set value="${param.cpw}" var="cpw" scope="request" />

<jsp:forward page="postregister.jsp"/>

	</c:if>
		</c:if>

<html>
<head> 
</head>
<body bgcolor="CFECEC" >

<form method="post" name="frmRegister">
<input type="hidden" name="submitted" value="true"/>

<script type="text/javascript">

<!--

	function add_onclick() {
		
		var TRUE = new Boolean("True")
		var FALSE = new Boolean("False")
		
		blnError = FALSE
		strError = "The following problems were found in your registration form: \n\n"
		
		if (frmRegister.name.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must provide a Login Name\n"
			};
			
		if (frmRegister.pw.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must provide a Password\n"
			};
		if (frmRegister.cpw.value == "")
			{
				blnError = TRUE
				strError = strError + " - You must confirm your Password\n"
			};
			
		if (frmRegister.pw.value != frmRegister.cpw.value)
			{
				blnError = TRUE
				strError = strError + " - Your Password does not match\n"
			};
			
		if (blnError == TRUE)
			{
				strError = strError + "\nPlease correct these mistakes and try again."
				alert(strError)				
			}
		else
			{
				frmRegister.submit()
			};				
		
	}

	//-->
	</SCRIPT>

<p align="left"><b> Register <hr> </p>
<p align="center"><b>Please complete the following registration form</b>  <hr><br><br>

<img src="dmu.jpg" alt="DMU University" align="left">
<img src="dmu.jpg" alt="DMU University" align="right">

<table BORDER="0" ALIGN="CENTER" VALIGN="TOP" CELLPADDING=2 CELLSPACING=0>
<tr> 
<td><Strong>Username</strong></td>
<td><input type="text" name="name" value="<c:out value="${param.name}" />"
/>

</td>
</tr>

<tr> 
<td><Strong>Password</strong></td>
<td> <input type="password" name="pw"  value="<c:out value="${param.pw}"/>"
/>

<tr> 
<td><Strong>Confirm password</strong></td>
<td> <input type="password" name="cpw"  value="<c:out value="${param.cpw}"/>"
/>

<tr><td>&nbsp;</td>
<td><input type="submit" value="register"LANGUAGE=javascript onclick="return add_onclick()" />
</td>
</tr>

</table>
<img src="dmu.jpg" alt="DMU University" align="left">
<img src="dmu.jpg" alt="DMU University" align="right">

</form>
</body>
</html>

code describe dabove is register.jsp which send info to postregister.jsp. which described below

 Help with Code Tags 
 JSP Syntax (Toggle Plain Text) 
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<c:choose>
 
<c:when test ="${param.pw == param.cpw}">
 
<sql:setDataSource
	dataSource= "jdbc/ma123"
	scope="session"/>
 
<sql:transaction isolation="serializable">
	<sql:query var="result" >
    		select username from rptable where username=?
               <sql:param value="${requestScope.name}" />
 
	</sql:query>
 
	<sql:update>
		insert into rptable(username,password) VALUES (?,?);
		<sql:param value="${requestScope.name}" />
			<sql:param value="${requestScope.pw}" />
 
	</sql:update>
 
</sql:transaction>
 
</c:when>
<c:otherwise>
<c:redirect url="register.jsp" >
</c:redirect>
</c:otherwise>
</c:choose>
<%----
<c:set var="user" scope="session" value="${requestScope.name}" />
---%>
<jsp:forward page="login.jsp"/>
 
<%----
 
it trasfering same data 2 times in database.
 
---%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<c:choose>

<c:when test ="${param.pw == param.cpw}">

<sql:setDataSource
	dataSource= "jdbc/ma123"
	scope="session"/>

<sql:transaction isolation="serializable">
	<sql:query var="result" >
    		select username from rptable where username=?
               <sql:param value="${requestScope.name}" />

	</sql:query>

	<sql:update>
		insert into rptable(username,password) VALUES (?,?);
		<sql:param value="${requestScope.name}" />
			<sql:param value="${requestScope.pw}" />
				
	</sql:update>

</sql:transaction>

</c:when>
<c:otherwise>
<c:redirect url="register.jsp" >
</c:redirect>
</c:otherwise>
</c:choose>
<%----
<c:set var="user" scope="session" value="${requestScope.name}" />
---%>
<jsp:forward page="login.jsp"/>

<%----

it trasfering same data 2 times in database.

---%>

it is transfering same data 2 times. so i do not understand what to do to compare password and confirm password.

any help would be greateful!!!!!!

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Join Date: Aug 2008

Posts: 1

Reputation: fbeli is an unknown quantity at this point

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fbeli

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Re: JSTL compare string

Aug 27th, 2008

try put after onClick parans in input submit the value return false; <input onClick="test(); return false"/>

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Join Date: Dec 2004

Posts: 4,117

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peter_budo peter_budo is online now

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Re: JSTL compare string

Aug 27th, 2008

Awn, I think he may already sorted or give up on this problem. Post is 3 year OLD!!!!!!!!

Learn to see in another's calamity the ills which you should avoid.
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(~100 BC)
LJC - London Java Community, Graduate & Undergraduate Software Development Community, JAVAWUG (Java Web User Group), The London Android Group

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Join Date: Sep 2008

Posts: 7

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haoyou2008 haoyou2008 is offline

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Re: JSTL compare string

Sep 9th, 2008

lol,so old post .........

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Last edited by peter_budo; Sep 9th, 2008 at 4:46 am. Reason: Keep It Spam-Free - Do not spam, advertise, plug your website, or engage in any other type of self promotion.