CODEWITHSUNDEEP
javaspringjspspring-mvctomcat
JamesCollett
JamesCollett

Reputation: 189

Display variable-length list of Strings in JSP page using Spring framework

Is it possible to display a variable-length list (or set) of Strings in a JSP page using the Spring framework ?

Currently I have the following in my Java Controller :-

@Controller
@RequestMapping("/")
public class HelloController
{ 
   @RequestMapping(method = RequestMethod.GET)
   public String printHello(ModelMap model)
   {
      model.addAttribute("message1", "Cat");
      model.addAttribute("message2", "Dog");
      model.addAttribute("message3", "Fish");
      model.addAttribute("message4", "Bird");

      return "hello";
   }
}

Currently I have the following in "hello.jsp" :-

<%@ page contentType="text/html; charset=UTF-8" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
   <p>${message1}</p>
   <p>${message2}</p>
   <p>${message3}</p>
   <p>${message4}</p>
</body>
</html>

Is it possible to do this but with a variable-length list (or set) ?

Thank you for your time,

James

Upvotes: 0

Views: 890

Answers (2)

sanjay
sanjay

Reputation: 437

Put your key and value pair into Map and set it into model object.

Iterate Map object using jstl foreach loop in jsp page and get required output in key value pait

(1)Write your Controller

    Map<String, String> messageList = new HashMap<String, String>();
    messageList.put("message1", "Cat");
    messageList.put("message2", "value2");
    messageList.put("message3", "value3");
    messageList.put("message4", "value4");

    model.addAttribute("messageList",messageList);


(2)JSP page

    <c:forEach var="msg" items="${messageList}">
        ${msg.key} : ${msg.value}
    </c:forEach>

Upvotes: 1

Andreas
Andreas

Reputation: 159106

Put a List object into the model, and use a <c:forEach> loop to iterate the list.

model.addAttribute("messages", Arrays.asList("Cat", "Dog", "Fish", "Bird"));

<c:forEach var="message" items="${messages}">
  <p>${message}</p>
</c:forEach>

Upvotes: 1

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