我想实现类似下面的代码来验证我的@RestController中的输入,以便我可以避免显式空检查,但是我被卡住了.
@H_301_2@public @ResponseBody Response getCityDetails(@RequestParam("city") final String city) {
Optional.of(city).ifPresent(name -> {
// return value
return service.getDetails(name);
}).orElseThrow(//some Exception);
}
解决方法
试试这个
@H_301_2@Optional.ofNullable(city)
.map(name ->service.getDetails(name))
.orElseThrow(//some Exception);
