How to Pass Primitive Array to Spring MVC Controller

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Receive from Request URL Query String

Integer Array

Frontend Pass with HTTP request

  • url?ids=1,2,3
  • url?ids=1&ids=2&ids=3

Backend receive in controller methods

  • Integer[] ids
  • @RequestParam Integer[] ids
  • @RequestParam List<Integer> ids

String Array

Frontend Pass with HTTP request

  • url?ids=a,b,c
  • url?ids=a&ids=b&ids=c

Backend receive in controller methods

  • String[] ids
  • @RequestParam String[] ids
  • @RequestParam List<String> ids

Receive from Form Data

Integer Array

Frontend Pass with HTTP request

  • ids=1,2,3
  • ids=1, ids=2, ids=3

Backend receive in controller methods

  • Integer[] ids
  • @RequestParam Integer[] ids
  • @RequestParam List<Integer> ids

String Array

Frontend Pass with HTTP request

  • ids=a,b,c
  • ids=a, ids=b, ids=c

Backend receive in controller methods

  • String[] ids
  • @RequestParam String[] ids
  • @RequestParam List<String> ids

Receive from request body JSON

Integer Array

Frontend Pass with HTTP request

  • [1,2,3]

Backend receive in controller methods

  • @RequestBody Integer[] ids
  • @RequestBody List<Integer> ids

String Array

Frontend Pass with HTTP request

  • [“a”,”b”,”c”]

Backend receive in controller methods

  • @RequestBody String[] ids
  • @RequestBody List<String> ids