发送地图 <String,List<String> &gt;通过ajax作为请求参数

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.

Answer 1

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?