Convert javascript array into two dimensional object array in Java

Question

I have passed an 2 dimensional array like this using ajax to servlet

var data = [["BSC","Name","Code"],[34,"dfg4",34],[345,"3dg4sdfd",345],[234,"dfg4","34f"],[23,"dfg4","s34"],[23,"dg","wdr3"],[234,244,"drydr"]];

$.ajax({
        url: './SubmitSheet',
        type: 'POST',
        data: {'json': JSON.stringify(data)},
        success: function () {
    }
});

In servlet I need to retrieve the values to a 2 dimensional array I have tried using

String data[] = request.getParameterValues("json");

But it puts all the values into 0 index (data[0])

If it's `bidimensional` why you instantiate an `unidimensional` `data[]` array instead of `data[][]`? — XCS, Mar 30 '16 at 13:20
Also, read this question, it might help: http://stackoverflow.com/questions/1067073/initialising-a-multidimensional-array-in-java — XCS, Mar 30 '16 at 13:21
Enumeration en=req.getParameterNames(); while(en.hasMoreElements()) { Object objOri=en.nextElement(); String param=(String)objOri; String value=req.getParameter(param); pw.println("Parameter Name is '"+param+"' and Parameter Value is '"+value+"'"); } — khaja firoz, Mar 30 '16 at 13:37
This might help you.. http://stackoverflow.com/questions/18040926/how-to-accept-2d-arrays-in-spring-mvc-controller — Ashok Goli, Mar 30 '16 at 13:52

ozOli · Answer 1 · 2016-03-30T13:39:41.420

0

You code should be:

String data = request.getParameter("json");

You will need to parse the String try using gson

edited Mar 30 '16 at 13:39

answered Mar 30 '16 at 13:24

ozOli

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How is this any different from his actual code? – XCS Mar 30 '16 at 13:29
This code won't even compile – Mar 30 '16 at 13:37
1

code updated. see http://stackoverflow.com/questions/19568142/how-to-read-json-sent-by-ajax-in-servlet for more info – ozOli Mar 30 '16 at 13:40
Next time you fiund a duplicate, vote/flag for close as duplicate. – BalusC Mar 30 '16 at 13:50
I would if I had those powers. They are granted back tomorrow... – ozOli Mar 30 '16 at 13:51

score -1 · Answer 2 · answered Mar 30 '16 at 13:41

try this method. Change value of input as necessary.

private static void jsArrayToJavaArray(){
    String input = "[[\"BSC\",\"Name\",\"Code\"],[34,\"dfg4\",34]," +
            "[345,\"3dg4sdfd\",345],[234,\"dfg4\",\"34f\"],[23,\"dfg4\",\"s34\"]," +
            "[23,\"dg\",\"wdr3\"],[234,244,\"drydr\"]]";

    input = input.substring(2,input.lastIndexOf("]"));
    input = input.substring(0,input.lastIndexOf("]"));

    String outerArr[] = input.split("],\\[");
    String output[][]= new String[outerArr.length][];
    for(int i=0;i<outerArr.length;i++){
        output[i] = outerArr[i].split(",");
    }

    //print results
    for(int i=0;i<output.length;i++){
        for(int j=0;j<output[i].length;j++){
            System.out.println(output[i][j]);
        }
    }
}

may I know the reason for down vote? – Himanshu Tanwar Mar 30 '16 at 13:49 — Himanshu Tanwar, Mar 30 '16 at 13:49

Convert javascript array into two dimensional object array in Java

2 Answers2