Parsing JSON objects with JAVA and Gson

<script type="text/javascript">
//create a JSON Object
var jsonObject = [];
jsonObject.push({title: 'Title 1', content: 'Content 1'});
jsonObject.push({title: 'Title 2', content: 'Content 2'});
 
//lets create a string from the JSON, so it can be sent with the other data
var jsonString = JSON.stringify(jsonObject);
</script>

<script type="text/javascript">
//lets data object to be sent
var postData = 
{
	pageId : 100,
	pageName: "Test",
	pageData: jsonString
};
 
$.ajax({
    type: 'POST',
    dataType: "json", //lets specify that we will return data as JSON                  
    url: "url to send data to",
    data: postData,
    success: successFinction,
    error: function() {
    	//handle error here
    }
});
</script>

 
//lets assume this is our paramater with the JSON as String - request.getParameter("pageData")
String jsonString = request.getParameter("pageData");
 
 
JsonParser parser = new JsonParser();
JsonElement tradeElement = parser.parse(jsonString);
JsonArray json = tradeElement.getAsJsonArray();
 
 
//lets create a static class
static class CustomPage {
    private String title;
    private String content;
    private CustomPage(String title, String content) {
      this.title = title;
      this.content = content;
    }
}
 
//lets itterate now
Gson gson = new Gson();
Type collectionType = new TypeToken<List<CustomPage>>(){}.getType();
List<CustomPage> jsonNodes = gson.fromJson(json, collectionType);		
 
Iterator<CustomPage> iterator = jsonNodes.iterator();			
while(iterator.hasNext()){
	CustomPage node = (CustomPage) iterator.next();
 
	System.out.println("Title: " + node.title);
	System.out.println("Content: " + node.content);
 
}

Map<String, String> data = new HashMap<String, String>();
data.put("status", "1");
data.put("message", "success!");
 
//init Gson
Gson gson = new Gson();
 
//flush it to the page
out.println(gson.toJson(data));

<script type="text/javascript">
function successFinction(json) {
	//if you are using a jQuery, notice we passed this parameter above
	// dataType: "json",
	//so we will get a JSON object right from it
 
	alert("Message: " + json.message);
 
	//if you are receiving json as a string you can always parse itlike that
	// var jsonObject = eval('(' + jsonString + ')');
 
}
</script>