Passing Data from jsp to controller in Spring mvc

Question

I am new to Springs and I am stuck at passing data from jsp to controller What i have here is a listing page where user is allowed to click on the primary key and then that primary key should pass to controller for it to detect the incoming request of the user to view the page

I have my listing jsp as follows

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<style>
.tableimp {
    margin-top: 150px;
}
</style>
</head>
<body>
    <table align="center" border="1" class="tableimp">
        <tr>
            <th bgcolor="#2E64FE">USERNAME</th>
            <!--            <td>&nbsp;&nbsp;</td> -->
            <th bgcolor="#2E64FE">FIRSTNAME</th>
            <!--            <td>&nbsp;&nbsp;</td> -->
            <th bgcolor="#2E64FE">LASTNAME</th>
            <!--            <td>&nbsp;&nbsp;</td> -->
            <th bgcolor="#2E64FE">EMAIL</th>
            <!--            <td>&nbsp;&nbsp;</td> -->
            <th bgcolor="#2E64FE">USERID</th>
        </tr>

        <c:forEach items="${stkList}" var="maps">
            <tr>
                <td colspan="5">&nbsp;&nbsp;</td>
            </tr>
            <tr>
                <c:forEach items="${maps}" var="mapEntry">
                    <td align="center"> <c:choose>
                            <c:when test="${mapEntry.key eq 'userId'}">
                                <c:url var="userView" value="userView.do" />
                                <a href="<c:out value='userView.do?userId=${mapEntry.value}' />">${mapEntry.value}</a>
                            </c:when>
                            <c:otherwise>
                            ${mapEntry.value}
                        </c:otherwise>
                        </c:choose></td>
                </c:forEach>
            </tr>
        </c:forEach>
    </table>
</body>
</html>

My Controller

@RequestMapping(value="/userView.do*", method=RequestMethod.GET)
public ModelAndView viewUser(HttpServletRequest request)
{
    try{
        //I need that userId Here somehow 

    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
    return new ModelAndView("form","",null);
}

}

Could anyone please give me a snippet how to achieve the task

My url gets append to browser as i want : localhost:8080/SpringMVC/userView.do?userId=1

I need this userId value in my controller thats it :)

Your question is unclear. Few things we need to know. What is the value, you need to pass it into controller (mapEntry.value)? and how the URL looks in browser? Does it rendered properly?? I hope probably not, since you are wrongly combining string with c:out value. — Vinoth Krishnan
– Vinoth Krishnan, Commented Sep 3, 2014 at 17:05

SzaboAdam · Accepted Answer · 2014-09-06 08:20:44Z

1

You can get the userId request param with

Integer.parseInt(request.getParameter("userId"));

Of course you would need additional error parsing (to not throw nullpointer, numberformat...)

In my opinion, you should use @RequestParam annotation instead

@RequestMapping(value="/userView.do*", method=RequestMethod.GET)
public ModelAndView viewUser(@RequestParam int userId)

Then the userId you get will be automatically converted to int for you, and Spring returns with HTTP BAD REQUEST if it is not present

answered Sep 6, 2014 at 8:20

SzaboAdam

3241 gold badge4 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Passing Data from jsp to controller in Spring mvc

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related