spring:bind error using in a List

Question

I have a list containing users. I am trying to print it in JSP but some how I am not able to get it to print it. Getting this exception HTTP Status 500 - javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Neither BindingResult nor plain target object for bean name 'users[0]' available as request attribute

Code in JSP

<c:forEach items="${users}" var="user" varStatus="status">
   <spring:bind path="users[${status.index}].name">
      <c:out value="${status.value}" />
   </spring:bind>
</c:forEach>

Controller

ModelAndView modelAndView = new ModelAndView("go_some_JSP_page");
List<UserEntity> users = userManager.getAllObjects();
modelAndView.addObject("users", users);

BTW, UserEntity has name field. If I remove the binding and try to print the user.name using <c:out value="user.name" /> it prints the value

Where am I going wrong and what do I need to do? Thanks

Not working code below. [I have to invoke formatting on field @NumberFormat so have to try it using status variable]

<spring:bind path="user.name">
   <c:out value="${status.value}" />
</spring:bind>

Gets this error --> javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Neither BindingResult nor plain target object for bean name 'user' available as request attribute

So added a bean binding and then I get empty table :(. I believe thats because the instance is empty. So this does not seems like a right approach.

@ModelAttribute("user")
public UserEntity userEntityBinding() {
    return UserEntity.newInstance();
}

A working code exists at https://github.com/hth/StatusInvoke.git

Let me know if you face any problem deploying it.

This question has been solved. Thanks for looking at it.

Community · Accepted Answer · 2017-05-23 11:48:59Z

1

You can try using LazyList instead of simple list. If you want to take a look at the example then you can refer one of my question. In the question statement I have mentioned how to use the LazyList.

Hope that helps you. Cheers.

edited May 23, 2017 at 11:48

CommunityBot

11 silver badge

answered Jan 8, 2013 at 12:25

Japan Trivedi

4,4932 gold badges26 silver badges44 bronze badges

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

2 Comments

java_dude Over a year ago

I found the solution and the code is posted on github. A working code exists at github.com/hth/StatusInvoke.git

Japan Trivedi Over a year ago

ok. I thought you want to bind the values of the list to the jsp controls. So I thought this would be more easy. :)

NimChimpsky · Accepted Answer · 2013-01-01 20:20:29Z

0

this, if the modelandview are returned, is the correct way to populate the list

ModelAndView modelAndView = new ModelAndView("go_some_JSP_page");
List<UserEntity> users = userManager.getAllObjects();
modelAndView.addObject("users", users);

And this is the correct way to reference the list

<c:forEach items="${users}" var="user" varStatus="status">
    <spring:bind path="user.name">
      <c:out value="${status.value}" />
   </spring:bind>
</c:forEach>

Your problem must be elsewhere is the name field definitely populated, is the correct jsp being called... the above code is correct and should work.

edited Jan 1, 2013 at 20:20

answered Dec 31, 2012 at 10:52

NimChimpsky

47.5k61 gold badges202 silver badges319 bronze badges

9 Comments

java_dude Over a year ago

userManager is not returning user empty. If I remove the binding and just print out the user it prints.

java_dude Over a year ago

After changing the binding I see this error

javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Neither BindingResult nor plain target object for bean name 'user' available as request attribute

java_dude Over a year ago

I assume you are asking what is the result of the code posted above :) Its actually blank. I see empty table. I have mentioned that in my posting. And the empty result is because of the empty object UserEntity

java_dude Over a year ago

I have tried as you have mentioned and it still does not work. For reference I have created a sample code to test at github.com/hth/StatusInvoke.git

NimChimpsky Over a year ago

@java_dude you are redirecting from your index, to landing without actually calling the controller. Be sure to call your code using the url "/landing".

|

java_dude · Accepted Answer · 2013-01-03 01:19:25Z

0

The correct answer to invoke @NumberFormat annotation is by using spring:eval expression tag

<spring:eval expression="user.balance" />

This invokes the annotation and performs formatting as mentioned in the annotation

answered Jan 3, 2013 at 1:19

java_dude

4,08810 gold badges40 silver badges62 bronze badges

Comments

beder · Accepted Answer · 2013-01-04 18:54:33Z

0

I don't think you can use spring:bind in that case, AFAIK it tries to get the variable from the ModelMap, it's not able to get it from the "for" var.

answered Jan 4, 2013 at 18:54

beder

1,0745 silver badges10 bronze badges

1 Comment

java_dude Over a year ago

Can you give more information as I am not able to understand what you are suggesting as alternative

Collectives™ on Stack Overflow

spring:bind error using in a List

4 Answers 4

2 Comments

9 Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

9 Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related