400 error when making post request to Spring server - swift

Question

Hi I'm very new to Swift and trying to make a simple application.
I'm using 'alamofire 5 beta 6' to make a request.
Here is some code below
-code for making post request
var json:JSON = JSON(["id":id.text, "password":enteredPassword])
var parameters: Parameters = ["id":id.text, "password":enteredPassword]
let headers:HTTPHeaders = [ "Content-Type":"application/json"]
AF.request("http://127.0.0.1:8080/user", method: .post, parameters: parameters, encoding: URLEncoding.httpBody, headers: headers).responseJSON{
response in
print("response : \(response)")
}
-code for Spring Framework
#RequestMapping(value="user", method=RequestMethod.POST)
public JSONObject addUser(
#RequestBody Memberinfo member,
HttpServletRequest request) {
JSONObject result = new JSONObject();
return result;
}
-Memberinfo.java that is used in controller to retrieve #RequestBody
public class Memberinfo {
String id;
String password;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
In Swift code, I set parameter id and password to retrieve it back in Spring framework.
However, right after I make a request, Alamofire responses with message
response : success({
error = "Bad Request";
message = "JSON parse error: Unrecognized token 'id': was expecting ('true', 'false' or 'null'); nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'id': was expecting ('true', 'false' or 'null')\n at [Source: (PushbackInputStream); line: 1, column: 4]";
path = "/user";
status = 400;
timestamp = "2019-06-09T05:46:07.417+0000";
})

Answer 1

I think the parameter should be sent as following
var parameters: Parameters = {"id":id.text, "password":enteredPassword}
Another important thing that you don't need to have a JSONObject as a response type for your endpoint you can just annotate your endpoint with #ReponseBody to have a json response
#RequestMapping(value="user", method=RequestMethod.POST)
#ResponseBody
public ResponseEntity<JSONObject> addUser(
#RequestBody Memberinfo member,
HttpServletRequest request) {
JSONObject result = new JSONObject();
return result;
}
Always use something like Postman or RestClient to test your endpoint before calling this endpoint from an external source