Sending Map<String,List<String>> as request parameter through ajax

Question

i want to send a Map through ajax request but i am getting 400 bad request. My data is like.

var idss1 = [];
var idss2 = [];
var idss3 = [];
var idss4 = [];
var idss5 = [];


    map[id_1] = idss1;
    map[id_2] = idss2;
    map[id_3] = idss3;
    map[id_4] = idss4;
    map[id_5] = idss5;

wehre all the keys (id_*) are string

Ajax call is

$.ajax({
        type:"POST",
        url: myurl,
        dataType: "text",
        data : {allIds : map},
        success: function(response) {...}

at server side my method signature is

public void myMethod(HttpServletRequest request, @RequestParam("allIds") Map<String, List<String>> ids) {
...
}

Kindly help me, i shall be thankful.

Can you construct a JSON list and send ? Should it be dataType: "text"? — AllTooSir
– AllTooSir, Commented May 14, 2013 at 7:06
i want to send it as a map not a list. How can i use a json list instead of map, can you kindly help? — Shahzeb Khan
– Shahzeb Khan, Commented May 14, 2013 at 7:10
So you can send a JSON map, there are lots of tutorials to do so in net !!! — AllTooSir
– AllTooSir, Commented May 14, 2013 at 7:11

Community · Accepted Answer · 2017-05-23 11:49:16Z

0

1) You should never have variables names in a program whose only difference is a number. That is what arrays are for. The names of the elements in the array are myArr[0], myArr[1], etc.

2) In java, you can do what's called 'serializing' an object. Serializing converts an object to a string, and a string can be sent in an ajax request, and then the string can be unserialized in your servlet to create an object from the string.

Serialization to String: How to binary (de)serialize object into/form string?

edited May 23, 2017 at 11:49

CommunityBot

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answered May 14, 2013 at 7:11

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