Spring Data REST：自定义方法验证

  • Z时代
  • 2024-01-10
  • 分类：问答

我正在尝试使用Spring Data REST带@RepositoryRestResource注释的存储库以及自定义方法的实现。有两种情况：

1）我有REST存储库，注释@RepositoryRestResource它映射到/users端点。另外，我将@RestController其映射到相同的端点。

但是，带有@Valid注解的方法验证可用于@RestController方法。例如，这有效：

@ResponseBody
@RequestMapping(value = "/users")
public ResponseEntity signUp(@RequestBody @Valid final UserSignUpRequest userSignUpRequest)

2）与REST信息库一起使用的@RepositoryRestController控制器是控制器。这样，两个方法都在@RepositoryRestController和@RepositoryRestResource中声明了。但是

。DATAREST-593已描述了此问题。

有什么想法至少可以解决两个问题之一？主要思想是将@RepositoryRestResource存储库与自定义控制器方法和注释验证一起使用。

回答：

似乎在这种情况下没有好的解决方案，并且@Valid默认情况下不以任何方式支持注释，请参阅DATAREST-593。因此，为了支持方法上的@Valid注释@RepositoryRestController，我创建了以下@ControllerAdvice类：

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>
 */
@ControllerAdvice
public class RequestBodyValidationProcessor extends RequestBodyAdviceAdapter {
    private final Validator validator;
    public RequestBodyValidationProcessor(@Autowired final Validator validator) {
        this.validator = validator;
    }
    @Override
    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;
    }
    @Override
    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(fieldError.getField())
                    .append(" : ")
                    .append(fieldError.getRejectedValue())
                    .append(" ] "));
        } else if (bindingResult.getAllErrors() != null && !bindingResult.getAllErrors().isEmpty()) {
            final ObjectError objectError = bindingResult.getAllErrors().get(0); // get the first error
            stringBuilder.append(" Message: ")
                    .append(objectError.getDefaultMessage());
        }
        return stringBuilder.toString();
    }
}

以上是 Spring Data REST：自定义方法验证 的全部内容， 来源链接： utcz.com/qa/410146.html

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