Question

I am using struts2 for Action and jquery for UI …

I want to know how to convert a Map object to JSON object and send it back to UI ,

Now am able to print it in JSP page the normal java Map object :

{71=Heart XXX, 76=No Heart YYY}

But i want it to be like this :

{71:Heart XXX, 76:No Heart YYY}

How will i achieve this …. ?

Answer 1

Try Gson:

Gson gson = new Gson();
String json = gson.toJson(yourMap);

I wouldn’t recommend putting this kind of code into a JSP, though. Things like these should live in a controller like a Servlet or Action class.

You also most definitely don’t want the output to be:

{71:Heart XXX, 76:No Heart YYY}

but rather proper JSON like (quoted names, quoted string values):

{"71":"Heart XXX", "76":"No Heart YYY"}

Gson will output the latter.