I've a Java Script map having key value pairs which i Need to send to spring boot contoller :--
Example :--
var myMap = new Map();
myMap.set('1', 'value1');
myMap.set('2', 'value2');
I'm not able to get this JavaScript (js) map in my spring boot controller. To my best practice I'm trying to get this map in java's HashMap or Map. A help is highly appreciated. :)
Try below:
var myMap = {};
myMap["names"] = ["Alex"];
myMap["fruit"] = ["Apple"];
Modify javascript code to use Ajax:
$.ajax({
type : "POST",
url : "/reqURL",
contentType: "application/json",
data : JSON.stringify(myMap) // .....
Controller code like below:
@RequestMapping(value = "/reqURL", method = RequestMethod.POST, consumes="application/json")
@ResponseBody
public List<String> reqControl(@RequestBody Map<String, List<String>> myMap) {
// do something with parameters ...
}
{} is coming, JSON structure need to be enclosed with {}, share a sample JSON, is Spring Controller complaining and not able to convert to aMap?
var myMap = new Map();
myMap.set('1', 'value1');
myMap.set('2', 'value2');
myMap.set('3', 'value3');
myMap.set('4', 'value4');
//Making JS Map compatible for JSON.Stringify
const out = Object.create(null)
myMap.forEach((value, key) => {
if (value instanceof Map) {
out[key] = map_to_object(value)
}
else {
out[key] = value
}
})
$.ajax({
type : "POST",
url : "/yourURL",
contentType: "application/json",
data : JSON.stringify(myMap) //......
@RequestMapping(value = "/yourURL", method = RequestMethod.POST, consumes="application/json")
@ResponseBody
public List<String> reqControl(@RequestBody Map<String,<String> myMap) {
// further code.
}
In my case I pass the map to a servlet but maybe it can help someone:
$.ajax({
...
data: {
"MY_MAP": JSON.stringify(Object.fromEntries(myMap))
},
...
String myMapString = parameters.get("MY_MAP");
Map<String, String> myMap = new Gson().fromJson(myMapString, new TypeToken<HashMap<String, String>>() {}.getType());
