CODEWITHSUNDEEP
jsonstringjspgson
user1375026
user1375026

Reputation: 413

Convert string to json using gson in jsp

I have a very simple json in a string:

{"username" : "a", "active" : 0}

I would like to convert this string into a json object of some sort. I just need to get the value of username using jsp. I have gson set up if that helps.

Thanks in advance for any help,

Upvotes: 1

Views: 9701

Answers (1)

OnaBai
OnaBai

Reputation: 40887

Define a java class for storing your JSON, something like:

package com.onabai;

public class User {
    public String username = "";
    public int active = 0;
}

and then parsing the JSON from the JSP would be:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="com.google.gson.Gson" %>
<%@ page import="com.onabai.User" %>

<html>
<head>
    <title>Powered by Zafu: OnaBai</title>
</head>
<body>
<%
    String json = "{\"username\" : \"a\", \"active\" : 0}";
    Gson gson = new Gson();
    User user = gson.fromJson(json, User.class);
    out.println("username:" + user.username);
%>
</body>
</html>

EDIT: If you only need the username you might define User as:

package com.onabai;

public class User {
    public String username = "";
}

having access only to username.

Upvotes: 3

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