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Find which url was used to access the controller when multiple url mapping to the same controller method

I see Spring MVC multiple url mapping to the same controller method
So now I have a method defined as
#RequestMapping(value = {"/aaa", "/bbb", "/ccc/xxx"}, method = RequestMethod.POST)
public String foo() {
// was it called from /aaa or /bbb
}
At run time, I want to know if the controller was called from /aaa or /bbb

You can use HttpServletRequest#getServletPath which:
Returns the part of this request's URL that calls the servlet. This
path starts with a "/" character and includes either the servlet name
or a path to the servlet, but does not include any extra path
information or a query string.
As follow:
#RequestMapping(value = {"/aaa", "/bbb", "/ccc/xxx"}, method = RequestMethod.POST)
public String foo(HttpServletRequest request) {
String path = request.getServletPath(); // -> gives "/aaa", "/bbb" or "/ccc/xxx"
}

How to get request URL in Spring Boot RestController

I am trying to get the request URL in a RestController. The RestController has multiple methods annotated with #RequestMapping for different URIs and I am wondering how I can get the absolute URL from the #RequestMapping annotations.
#RestController
#RequestMapping(value = "/my/absolute/url/{urlid}/tests"
public class Test {
#ResponseBody
#RequestMapping(value "/",produces = "application/json")
public String getURLValue(){
//get URL value here which should be in this case, for instance if urlid
//is 1 in request then "/my/absolute/url/1/tests"
String test = getURL ?
return test;
}
}

You may try adding an additional argument of type HttpServletRequest to the getUrlValue() method:
#RequestMapping(value ="/",produces = "application/json")
public String getURLValue(HttpServletRequest request){
String test = request.getRequestURI();
return test;
}

If you don't want any dependency on Spring's HATEOAS or javax.* namespace, use ServletUriComponentsBuilder to get URI of current request:
import org.springframework.web.util.UriComponentsBuilder;
ServletUriComponentsBuilder.fromCurrentRequest();
ServletUriComponentsBuilder.fromCurrentRequestUri();

Allows getting any URL on your system, not just a current one.
import org.springframework.hateoas.mvc.ControllerLinkBuilder
...
ControllerLinkBuilder linkBuilder = ControllerLinkBuilder.linkTo(methodOn(YourController.class).getSomeEntityMethod(parameterId, parameterTwoId))
URI methodUri = linkBuilder.Uri()
String methodUrl = methodUri.getPath()

Add a parameter of type UriComponentsBuilder to your controller method. Spring will give you an instance that's preconfigured with the URI for the current request, and you can then customize it (such as by using MvcUriComponentsBuilder.relativeTo to point at a different controller using the same prefix).

Why Spring MVC transform parameter [""] to [null] during mapping json to java bean?

I want to know why spring mvc transform [""] to [null] when I use PostMan to test my API.
here is my controller:
#RequestMapping(value = "", method = RequestMethod.POST, consumes = "application/json", produces = "application/json")
public #ResponseBody ResponseEntity<Object> participateRstActivities(
HttpServletRequest request, #RequestBody RstActivityFrom rstForm)
throws ServiceException {
log.info("list size:{}, frist object:{}",rstForm.getRestaurant_ids().size(), rstForm.getRestaurant_ids().get(0));
}
here is my java bean:
public class RstActivityFrom {
private List<Integer> restaurant_ids;
private int activity_id;
// omit getter & setter
}
here is my request body when I use postman to test my api:
{
"restaurant_ids":[""],
"activity_id":119129
}
and the log in controller print :
list size:1, frist object:null.
this problem makes me feel confuse, I want to know why. Thanks

Since restaurant_ids is a List and not String, Change your JSON for restaurant_ids:
{
"restaurant_ids":[],
"activity_id":119129
}
If you don't want to allow an empty String value for objects mapped from your JSON, you can look into setting the Jackson's ObjectMapper Features as described here:
https://docs.spring.io/spring-boot/docs/current/reference/html/howto-spring-mvc.html
The Java API for Jackson's DeserializationConfig.Feature(s) can be found here:
http://fasterxml.github.io/jackson-core/javadoc/1.9/org/codehaus/jackson/map/DeserializationConfig.Feature.html

unable to retrieve url parameters on Server side using REST API Controller

i want to call REST API Controller from my REST API Controller.
"http://localhost:8080/function/1?filter={"id":1435263}"
Since we cannot send directly ({"id":1435263})JSON query String along with url because of spring mvc cannot read "{",i am sending query string(Search variables) in the form of map .
Object response = restTemplate.getForObject(crudControllerURL,
Object.class, map);
where map contains the values .
On Server side i am unable to retrieve this map. I tried #RequestParam Object obj but it did not work . I am clueless how can i get these values there?
Do i need to convert it into POST?
EDIT
when i try to use whole url with query String then i recieve
java.lang.IllegalArgumentException: Not enough variable values available to expand '"id"'
Adding Server side contoller code snippet(not whole) and please note i need to access map in Server REST API Controller .
Server side controller
#RequestMapping(value = "/{function}/{type}", method = RequestMethod.GET)
public List<Order> performFetchAll(#PathVariable String function,
HttpServletRequest request) throws JsonParseException,
JsonMappingException, IOException, InvalidAttributesException {
String requestQueryString = request.getQueryString();
if (requestQueryString == null
|| requestQueryString.equalsIgnoreCase(""))
return orderService.findAll();
Please provide your feedback. Thanks.

You should do this probably than complicating the request:
URL can be changed like this : http://localhost:8080/function/1?idFilter=1435263
#RequestMapping(value = "/{function}/{type}", method = RequestMethod.GET)
public List<Order> performFetchAll(#PathVariable String function, #RequestParam("idFilter") String id, HttpServletRequest request) throws JsonParseException,
JsonMappingException, IOException, InvalidAttributesException {
//DO something
}
If your filter request is going to be big and complex like a json, change your method to POST and take the JSON and do your logic.

#ResponseBody annotated method do not return Model as JSON Spring 3.2.10

My method is annotated as
#RequestMapping(value = "/keepAlive", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE,consumes = MediaType.APPLICATION_JSON_VALUE)
public #ResponseBody ModelMap test(HttpServletRequest req, final ModelMap model) {
model.addAttribute("keepAlive", true);
return model;
}
when I call is using ajax using JQuery
it returns 500 server error and at server log I can see that it is looking for KeepAlive.jsp, I am using spring 3.2.10 and have jackson 2 at class path. When I debugged source code request is passed to ModelAndViewMethodReturnValueHandler rather than RequestResponseBodyMethodProcessor , It seems Model and view handler is registered before req res handler. How to solve this. Same code worked for spring 3.1.2.
Thanks