헷갈려서 적는 ajax-controller 데이터 보내고 받는법

ajax javascript

function getSggNm(sggCd){
	var allData = {
			sggCd : sggCd
	};
	
	var url = '/usr/sub/getSggNm.do';
	
	getResult(url,allData);
}


function getResult(url, allData){
	console.log(allData);
	$.ajax({
		async : false,
        type: "POST",
		url : url,
		dataType : "json",
		data: allData,
		success : function(data) {
			console.log(data);
			return data;
		},
		error : function() {
		}
	});
}

 

 

 

 

controller

 @RequestMapping("/usr/sub/getSggNm.do")
    public String getSggNm(@RequestParam Map<String, Object> paramMap) throws Exception {
    	System.out.println(paramMap);
    	
    	String sggNm= lifewtRcyService.getSggNm(paramMap);

    	return sggNm;
    }