Can't iterate over list in Jsp
up vote
2
down vote
favorite
I am using hibernate to get the subjects associated with a particular user. In mainPage, I want to see firstName and LastName (this works) of the user and allowed subjects. But, for some reason, I am not able to successfully iterate over the list of subjects put in mainPage.
In my Spring controller I have a method, which looks like this:
@RequestMapping(value = "/signin", method = RequestMethod.POST)
public String SignIn(@ModelAttribute("user") User user, ModelMap modelMap)
String username = user.getUsername();
String password = user.getPassword();
User user1 = userService.getUser(username, password);
if(user1 != null)
List<Subject> subjectList = userService.getUserSubjects(user1.getId());
modelMap.addAttribute("subjects", subjectList);
modelMap.addAttribute("user", user1);
return "mainPage";
modelMap.addAttribute("ShowNotAuthenticated", true);
return "authentication";
mainPage.jsp looks like this:
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2>Current user: $user.firstName $user.lastName</h2> //this works
<br>
<h3>Allowed subjects:</h3>
<table>
<tr>
<td>
Subject Name
</td>
</tr>
<c:forEach items="$subjects" var="x"> //doesn't work
<tr>
<td>
$x.name
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
This is SignIn method during debug:
These are pictures in mainPage.jsp:
Mykhailo Moskura's suggestion doesn't work too:
java spring-mvc
asked Nov 9 at 18:45
A.M
767
add a comment |
up vote
2
down vote
favorite
I am using hibernate to get the subjects associated with a particular user. In mainPage, I want to see firstName and LastName (this works) of the user and allowed subjects. But, for some reason, I am not able to successfully iterate over the list of subjects put in mainPage.
In my Spring controller I have a method, which looks like this:
@RequestMapping(value = "/signin", method = RequestMethod.POST)
public String SignIn(@ModelAttribute("user") User user, ModelMap modelMap)
String username = user.getUsername();
String password = user.getPassword();
User user1 = userService.getUser(username, password);
if(user1 != null)
List<Subject> subjectList = userService.getUserSubjects(user1.getId());
modelMap.addAttribute("subjects", subjectList);
modelMap.addAttribute("user", user1);
return "mainPage";
modelMap.addAttribute("ShowNotAuthenticated", true);
return "authentication";
mainPage.jsp looks like this:
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2>Current user: $user.firstName $user.lastName</h2> //this works
<br>
<h3>Allowed subjects:</h3>
<table>
<tr>
<td>
Subject Name
</td>
</tr>
<c:forEach items="$subjects" var="x"> //doesn't work
<tr>
<td>
$x.name
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
This is SignIn method during debug:
These are pictures in mainPage.jsp:
Mykhailo Moskura's suggestion doesn't work too:
java spring-mvc
asked Nov 9 at 18:45
A.M
767
You are getting a list ofSubjectinto that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…
– Alfabravo
Nov 9 at 19:24
@Alfabravo, you are right,$x[1]works
– A.M
Nov 9 at 19:37
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I am using hibernate to get the subjects associated with a particular user. In mainPage, I want to see firstName and LastName (this works) of the user and allowed subjects. But, for some reason, I am not able to successfully iterate over the list of subjects put in mainPage.
In my Spring controller I have a method, which looks like this:
@RequestMapping(value = "/signin", method = RequestMethod.POST)
public String SignIn(@ModelAttribute("user") User user, ModelMap modelMap)
String username = user.getUsername();
String password = user.getPassword();
User user1 = userService.getUser(username, password);
if(user1 != null)
List<Subject> subjectList = userService.getUserSubjects(user1.getId());
modelMap.addAttribute("subjects", subjectList);
modelMap.addAttribute("user", user1);
return "mainPage";
modelMap.addAttribute("ShowNotAuthenticated", true);
return "authentication";
mainPage.jsp looks like this:
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2>Current user: $user.firstName $user.lastName</h2> //this works
<br>
<h3>Allowed subjects:</h3>
<table>
<tr>
<td>
Subject Name
</td>
</tr>
<c:forEach items="$subjects" var="x"> //doesn't work
<tr>
<td>
$x.name
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
This is SignIn method during debug:
These are pictures in mainPage.jsp:
Mykhailo Moskura's suggestion doesn't work too:
java spring-mvc
asked Nov 9 at 18:45
A.M
767
I am using hibernate to get the subjects associated with a particular user. In mainPage, I want to see firstName and LastName (this works) of the user and allowed subjects. But, for some reason, I am not able to successfully iterate over the list of subjects put in mainPage.
In my Spring controller I have a method, which looks like this:
@RequestMapping(value = "/signin", method = RequestMethod.POST)
public String SignIn(@ModelAttribute("user") User user, ModelMap modelMap)
String username = user.getUsername();
String password = user.getPassword();
User user1 = userService.getUser(username, password);
if(user1 != null)
List<Subject> subjectList = userService.getUserSubjects(user1.getId());
modelMap.addAttribute("subjects", subjectList);
modelMap.addAttribute("user", user1);
return "mainPage";
modelMap.addAttribute("ShowNotAuthenticated", true);
return "authentication";
mainPage.jsp looks like this:
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2>Current user: $user.firstName $user.lastName</h2> //this works
<br>
<h3>Allowed subjects:</h3>
<table>
<tr>
<td>
Subject Name
</td>
</tr>
<c:forEach items="$subjects" var="x"> //doesn't work
<tr>
<td>
$x.name
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
This is SignIn method during debug:
These are pictures in mainPage.jsp:
Mykhailo Moskura's suggestion doesn't work too:
java spring-mvc
java spring-mvc
asked Nov 9 at 18:45
A.M
767
asked Nov 9 at 18:45
A.M
767
edited Nov 9 at 19:24
asked Nov 9 at 18:45
A.M
767
asked Nov 9 at 18:45
A.M
767
asked Nov 9 at 18:45
A.M
767
767
You are getting a list ofSubjectinto that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…
– Alfabravo
Nov 9 at 19:24
@Alfabravo, you are right,$x[1]works
– A.M
Nov 9 at 19:37
add a comment |
You are getting a list ofSubjectinto that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…
– Alfabravo
Nov 9 at 19:24
@Alfabravo, you are right,$x[1]works
– A.M
Nov 9 at 19:37
You are getting a list of
Subject into that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…– Alfabravo
Nov 9 at 19:24
You are getting a list of
Subject into that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…– Alfabravo
Nov 9 at 19:24
@Alfabravo, you are right,
$x[1] works– A.M
Nov 9 at 19:37
@Alfabravo, you are right,
$x[1] works– A.M
Nov 9 at 19:37
add a comment |
1 Answer
1
active
oldest
votes
up vote
3
down vote
accepted
From debugger screenshot I see that your subjectList has elements of type Object. So you either need to change what you store in that list or try to use $x[1] instead of $x.name.
answered Nov 9 at 19:37
Ivan
4,4791720
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
To tell that code ofuserService.getUserSubjects()is needed
– Ivan
Nov 9 at 19:41
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
From debugger screenshot I see that your subjectList has elements of type Object. So you either need to change what you store in that list or try to use $x[1] instead of $x.name.
answered Nov 9 at 19:37
Ivan
4,4791720
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
To tell that code ofuserService.getUserSubjects()is needed
– Ivan
Nov 9 at 19:41
add a comment |
up vote
3
down vote
accepted
From debugger screenshot I see that your subjectList has elements of type Object. So you either need to change what you store in that list or try to use $x[1] instead of $x.name.
answered Nov 9 at 19:37
Ivan
4,4791720
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
To tell that code ofuserService.getUserSubjects()is needed
– Ivan
Nov 9 at 19:41
add a comment |
up vote
3
down vote
accepted
up vote
3
down vote
accepted
From debugger screenshot I see that your subjectList has elements of type Object. So you either need to change what you store in that list or try to use $x[1] instead of $x.name.
answered Nov 9 at 19:37
Ivan
4,4791720
From debugger screenshot I see that your subjectList has elements of type Object. So you either need to change what you store in that list or try to use $x[1] instead of $x.name.
answered Nov 9 at 19:37
Ivan
4,4791720
answered Nov 9 at 19:37
Ivan
4,4791720
answered Nov 9 at 19:37
Ivan
4,4791720
answered Nov 9 at 19:37
Ivan
4,4791720
4,4791720
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
To tell that code ofuserService.getUserSubjects()is needed
– Ivan
Nov 9 at 19:41
add a comment |
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
To tell that code ofuserService.getUserSubjects()is needed
– Ivan
Nov 9 at 19:41
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
Yes, it works, but why is it so?
– A.M
Nov 9 at 19:38
1
1
To tell that code of
userService.getUserSubjects() is needed– Ivan
Nov 9 at 19:41
To tell that code of
userService.getUserSubjects() is needed– Ivan
Nov 9 at 19:41
add a comment |
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You are getting a list of
Subjectinto that variable so, maybe, you are trying to print something you don't have. As you see, the're are 0=> something, 1=> Physics, etc... and the NumberFormatException shows you're trying to process something different from what you expect, Check stackoverflow.com/questions/2148658/…– Alfabravo
Nov 9 at 19:24
@Alfabravo, you are right,
$x[1]works– A.M
Nov 9 at 19:37