spring - 如何在Spring MVC URL映射中为数组参数提供默认值？

Question

@RequestMapping(value = "/getUserScoreCardDetails", method = RequestMethod.GET)
public @ResponseBody List<ScoreDetails> getUserScoreCardDetails(
@RequestParam(value = "playerIds", required = false) int[] playerIds) { 

}

如果在请求中不提供玩家ID，我需要为玩家ID提供默认值[1,2,3]吗？

Answer 1

您可以在@RequestParam中的defaultValue属性内设置逗号分隔的值

@RequestMapping(value = "/getUserScoreCardDetails", method = RequestMethod.GET)
public @ResponseBody List<ScoreDetails> getUserScoreCardDetails(
@RequestParam(value = "playerIds", required = false, defaultValue="1,2,3") int[] playerIds) { 

}