在Springboot中执行请求验证时，响应不像预期的那样
在Springboot中执行请求验证时，响应不像预期的那样
提问于 2021-10-21 07:44:49
我正在尝试使用hibernate验证器来验证json-resquest，它正在按预期工作，但是在postman中没有响应。
Customer.java
import java.time.LocalDate;
import java.util.List;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Past;
import javax.validation.constraints.Size;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({ "cin", "firstName"})
public class Customer {
@JsonProperty("cin")
private String cin;
@JsonProperty("firstName")
@NotEmpty(message = "First Name must have some values")
@Size(min = 2, message = "First Name must greater or equal to 2 characters")
private String firstName;
//getters and setters
}和 error类--在一个对象中包装错误。
public class Errors {
private Integer status;
private String message;
private List<String> details;
public Errors(Integer status, String message, List<String> details) {
super();
this.status = status;
this.message = message;
this.details = details;
}
// Getters and Setters
}ControllerAdvice类
import java.util.List;
import java.util.stream.Collectors;
import javax.validation.ConstraintViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
import com.ecommerce.ms.customer.model.Errors;
@ControllerAdvice
@ResponseBody
public class CustomerExceptionHandler extends ResponseEntityExceptionHandler {
@ExceptionHandler(value=ConstraintViolationException.class)
public final ResponseEntity<Errors> handleConstraintViolation(ConstraintViolationException ex, WebRequest request) {
List<String> details = ex.getConstraintViolations().parallelStream().map(e -> e.getMessage())
.collect(Collectors.toList());
Errors error = new Errors(HttpStatus.BAD_REQUEST.value(), "Request Validation Error", details);
return ResponseEntity.badRequest().body(error);
}
}CustomerController.java
*
*/
import java.util.ArrayList;
import java.util.List;
import javax.validation.Valid;
import javax.ws.rs.core.MediaType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ecommerce.ms.customer.api.service.CustomerService;
import com.ecommerce.ms.customer.model.Customer;
@RestController
@RequestMapping("/api/customers")
public class CustomerController {
@Autowired
private CustomerService customerService;
@GetMapping("/status")
public String getStatus() {
return "ok";
}
@PostMapping(consumes = MediaType.APPLICATION_JSON, produces = MediaType.APPLICATION_JSON)
public ResponseEntity<Customer> addCustomer(@Valid @RequestBody Customer customer) {
return ResponseEntity.accepted().body(customerService.addCustomer(customer));
}
}Hibernate--验证器已经添加了pom.xml，我期待下面的原因。
{
"status":400,
"message": "Request Validation Error",
"details":["First Name must greater or equal to 2 characters"]
}
我试图得到适当的响应，但我找不到它的邮递员。
Stack Overflow用户
回答已采纳
发布于 2021-10-21 08:15:56
查看ResponseEntityExceptionHandler，没有这样的方法来处理ConstraintValidationExceptions，因此您创建的自定义方法不会被调用。
此外：
您无法捕获ConstraintViolationException.class，因为它没有传播到代码的那个层，而是被较低的层捕获，被包装并被另一种类型重新抛出。因此，访问web层的异常不是ConstraintViolationException。
参考文献：SpringBoot doesn't handle org.hibernate.exception.ConstraintViolationException
正确使用的一个例子是使用handleMethodArgumentNotValid方法并将错误作为主体返回：
@RestControllerAdvice
public class ExceptionHandler extends ResponseEntityExceptionHandler{
@Override
protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException ex,
HttpHeaders headers, HttpStatus status, WebRequest request) {
Map<String, Object> responseBody = new LinkedHashMap<>();
List<String> allErrors = new ArrayList<>();
ex.getBindingResult().getAllErrors().forEach(error -> allErrors.add(error.getDefaultMessage()));
responseBody.put("Errors:", allErrors);
return new ResponseEntity<>(responseBody, headers, status);
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/69657857
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