How to use

getBindingResult

method

in

org.springframework.web.bind.support.WebExchangeDataBinder

private void updateBindingContext(BindingContext context, ServerWebExchange exchange) {
  Map<String, Object> model = context.getModel().asMap();
  model.keySet().stream()
      .filter(name -> isBindingCandidate(name, model.get(name)))
      .filter(name -> !model.containsKey(BindingResult.MODEL_KEY_PREFIX + name))
      .forEach(name -> {
        WebExchangeDataBinder binder = context.createDataBinder(exchange, model.get(name), name);
        model.put(BindingResult.MODEL_KEY_PREFIX + name, binder.getBindingResult());
      });
}

private void validate(Object target, Object[] validationHints, MethodParameter param,
    BindingContext binding, ServerWebExchange exchange) {
  String name = Conventions.getVariableNameForParameter(param);
  WebExchangeDataBinder binder = binding.createDataBinder(exchange, target, name);
  binder.validate(validationHints);
  if (binder.getBindingResult().hasErrors()) {
    throw new WebExchangeBindException(param, binder.getBindingResult());
  }
}

.doOnSuccess(aVoid -> {
  validateIfApplicable(binder, parameter);
  BindingResult errors = binder.getBindingResult();
  model.put(BindingResult.MODEL_KEY_PREFIX + name, errors);
  model.put(name, value);
})
.then(Mono.fromCallable(() -> {
  BindingResult errors = binder.getBindingResult();
  if (adapter != null) {
    return adapter.fromPublisher(errors.hasErrors() ?

private void addBindingResult(HandlerResult result, ServerWebExchange exchange) {
  BindingContext context = result.getBindingContext();
  Map<String, Object> model = context.getModel().asMap();
  model.keySet().stream()
      .filter(name -> isBindingCandidate(name, model.get(name)))
      .filter(name -> !model.containsKey(BindingResult.MODEL_KEY_PREFIX + name))
      .forEach(name -> {
        WebExchangeDataBinder binder = context.createDataBinder(exchange, model.get(name), name);
        model.put(BindingResult.MODEL_KEY_PREFIX + name, binder.getBindingResult());
      });
}

protected void validate(Object target, Object[] validationHints,
    MethodParameter param, BindingContext binding, ServerWebExchange exchange) {
  String name = Conventions.getVariableNameForParameter(param);
  WebExchangeDataBinder binder = binding.createDataBinder(exchange, target, name);
  binder.validate(validationHints);
  if (binder.getBindingResult().hasErrors()) {
    throw new WebExchangeBindException(param, binder.getBindingResult());
  }
}

.doOnSuccess(aVoid -> {
  validateIfApplicable(binder, parameter);
  BindingResult errors = binder.getBindingResult();
  model.put(BindingResult.MODEL_KEY_PREFIX + name, errors);
  model.put(name, value);
})
.then(Mono.fromCallable(() -> {
  BindingResult errors = binder.getBindingResult();
  if (adapter != null) {
    return adapter.fromPublisher(errors.hasErrors() ?