Spring Data REST: custom methods validation

Spring Data REST: custom methods validation

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Spring Data REST: custom methods validation
Tag : java , By : n3txpert
Date : December 05 2020, 12:22 PM

Does that help Seems that there are no good solution in this case and @Valid annotation is not supported by default in any way, see DATAREST-593. That why, to support @Valid annotation on @RepositoryRestController methods, I've created the following @ControllerAdvice class:
package com.tivoli.api.application.advice;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.validation.BeanPropertyBindingResult;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.validation.Validator;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdviceAdapter;

import javax.validation.Valid;
import javax.validation.ValidationException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

 * Workaround class for making JSR-303 annotation validation work for controller method parameters.
 * Check the issue <a href="https://jira.spring.io/browse/DATAREST-593">DATAREST-593</a>
public class RequestBodyValidationProcessor extends RequestBodyAdviceAdapter {

    private final Validator validator;

    public RequestBodyValidationProcessor(@Autowired final Validator validator) {
        this.validator = validator;

    public boolean supports(final MethodParameter methodParameter, final Type targetType, final Class<? extends
            HttpMessageConverter<?>> converterType) {
        final Annotation[] parameterAnnotations = methodParameter.getParameterAnnotations();
        for (final Annotation annotation : parameterAnnotations) {
            if (annotation.annotationType().equals(Valid.class)) {
                return true;

        return false;

    public Object afterBodyRead(final Object body, final HttpInputMessage inputMessage, final MethodParameter
            parameter, final Type targetType, final Class<? extends HttpMessageConverter<?>> converterType) {
        final Object obj = super.afterBodyRead(body, inputMessage, parameter, targetType, converterType);
        final BindingResult bindingResult = new BeanPropertyBindingResult(obj, obj.getClass().getCanonicalName());
        validator.validate(obj, bindingResult);
        if (bindingResult.hasErrors()) {
            throw new ValidationException(createErrorMessage(bindingResult));

        return obj;

    private String createErrorMessage(final BindingResult bindingResult) {
        final StringBuilder stringBuilder = new StringBuilder("Invalid parameters specified.");
        if (bindingResult.getFieldErrors() != null && !bindingResult.getFieldErrors().isEmpty()) {
            stringBuilder.append(" Fields:");
            bindingResult.getFieldErrors().forEach(fieldError -> stringBuilder
                    .append(" [ ")
                    .append(" : ")
                    .append(" ] "));
        } else if (bindingResult.getAllErrors() != null && !bindingResult.getAllErrors().isEmpty()) {
            final ObjectError objectError = bindingResult.getAllErrors().get(0); // get the first error
            stringBuilder.append(" Message: ")

        return stringBuilder.toString();

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Implementing custom methods of Spring Data repository and exposing them through REST

Tag : java , By : micaleel
Date : March 29 2020, 07:55 AM
it fixes the issue The reason these methods are not exposed is that you're basically free to implement whatever you want in custom repository methods and thus it's impossible to reason about the correct HTTP method to support for that particular resource.
In your case it might be fine to use a plain GET, in other cases it might have to be a POST as the execution of the method has side effects.

Defining custom methods with path "/{resourcename}/search/" using spring-data-rest

Tag : java , By : Cube_Zombie
Date : March 29 2020, 07:55 AM

How to add custom methods to Spring Data Rest JPA implementation and leverage HATEOS support?

Tag : development , By : moss
Date : March 29 2020, 07:55 AM

Spring REST Validation not all methods

Tag : java , By : Ben Kohn
Date : March 29 2020, 07:55 AM

What url is generated for custom methods in Spring Data Rest repositories?

Tag : java , By : user185939
Date : March 29 2020, 07:55 AM
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