Java SpringBoot DTO验证
我是SpringBoot新手,我正在尝试向我的DTO类添加验证,如下所示Java SpringBoot DTO验证,java,spring,hibernate,spring-boot,Java,Spring,Hibernate,Spring Boot,我是SpringBoot新手,我正在尝试向我的DTO类添加验证,如下所示 import javax.validation.constraints.NotBlank; @Getter @Setter public class EmployeeDto { private Long id; @NotBlank(message = "Employee first name is required") private String firstName; private
import javax.validation.constraints.NotBlank;
@Getter
@Setter
public class EmployeeDto {
private Long id;
@NotBlank(message = "Employee first name is required")
private String firstName;
private String lastName;
@NotBlank(message = "EmployeeNUM is required")
private String employeeNum;
}
下面是我用来保存员工的REST端点
import javax.validation.Valid;
@PostMapping("/employee")
public ResponseEntity<?> addEmployee(@Valid @RequestBody EmployeeDto employeeDto) throws ClassNotFoundException {
return ResponseEntity.ok(employeeService.saveEmployee(deptId,employeeDto));
}
import javax.validation.Valid;
@后映射(“/员工”)
public ResponseEntity addEmployee(@Valid@RequestBody EmployeeDto EmployeeDto)引发ClassNotFoundException{
返回ResponseEntity.ok(employeeService.saveEmployee(deptId,employeeDto));
}
我创建了一个如下所示的验证类来验证DTO字段
@ControllerAdvice
@RestController
public class Validation {
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ExceptionHandler(MethodArgumentNotValidException.class)
public Map<String, String> handleValidationExceptions(
MethodArgumentNotValidException ex) {
Map<String, String> errors = new HashMap<>();
ex.getBindingResult().getAllErrors().forEach((error) -> {
String fieldName = ((FieldError) error).getField();
String errorMessage = error.getDefaultMessage();
errors.put(fieldName, errorMessage);
});
return errors;
}
}
@ControllerAdvice
@RestController
公共类验证{
@ResponseStatus(HttpStatus.BAD_请求)
@ExceptionHandler(MethodArgumentNotValidException.class)
公共地图手册例外(
MethodArgumentNotValidEx){
映射错误=新建HashMap();
例如:getBindingResult().getAllErrors().forEach((错误)->{
字符串fieldName=((FieldError)error).getField();
字符串errorMessage=error.getDefaultMessage();
errors.put(字段名、errorMessage);
});
返回错误;
}
}
预期产量为
{
“名字”:“需要员工的名字”,
“employeeNum”:“employeeNum是必需的”
}
但当通过邮递员到达终点时,我只收到了400个错误请求。
我的代码有什么问题?如何修复并获得上面提到的预期输出?我使用了下面的类,现在它工作正常
@Service
public class MapValidationErrorService {
public ResponseEntity<?> MapValidationService(BindingResult result){
if(result.hasErrors()){
Map<String, String> errorMap = new HashMap<>();
for(FieldError error: result.getFieldErrors()){
errorMap.put(error.getField(), error.getDefaultMessage());
}
return new ResponseEntity<Map<String, String>>(errorMap, HttpStatus.BAD_REQUEST);
}
return null;
}
}
@服务
公共类MapValidationErrorService{
公共响应属性映射验证服务(BindingResult){
if(result.hasErrors()){
Map errorMap=newhashmap();
for(FieldError错误:result.getFieldErrors()){
errorMap.put(error.getField(),error.getDefaultMessage());
}
返回新的响应属性(errorMap、HttpStatus.BAD_请求);
}
返回null;
}
}
内部控制器
@Autowired
private MapValidationErrorService mapValidationErrorService;
@PostMapping("/employee/{deptId}")
public ResponseEntity<?> addEmployee(@PathVariable(name = "deptId") String deptId,@Valid @RequestBody EmployeeDto employeeDto, BindingResult result) throws ClassNotFoundException {
ResponseEntity<?> errorMap = mapValidationErrorService.MapValidationService(result);
if(errorMap != null)return errorMap;
return ResponseEntity.ok(employeeService.saveEmployee(deptId,employeeDto));
}
@Autowired
私有MapValidationErrorService MapValidationErrorService;
@后映射(“/employee/{deptId}”)
public ResponseEntity addEmployee(@PathVariable(name=“deptId”)字符串deptId,@Valid@RequestBody EmployeeDto EmployeeDto,BindingResult)引发ClassNotFoundException{
ResponseEntity errorMap=mapValidationErrorService.MapValidationService(结果);
如果(errorMap!=null)返回errorMap;
返回ResponseEntity.ok(employeeService.saveEmployee(deptId,employeeDto));
}
尝试扩展ResponseEntityExceptionHandler
类,如下所示:
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
import javax.validation.ConstraintViolationException;
import java.time.Instant;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* * Handle all exceptions and java bean validation errors for all endpoints income data that use the @Valid annotation
*
* @author Ehab Qadah
*/
@ControllerAdvice
public class GeneralExceptionHandler extends ResponseEntityExceptionHandler {
@Override
protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException exception, HttpHeaders headers,
HttpStatus status, WebRequest request) {
List<String> validationErrors = exception.getBindingResult()
.getFieldErrors()
.stream()
.map(error -> error.getField() + ": " + error.getDefaultMessage())
.collect(Collectors.toList());
return getExceptionResponseEntity(HttpStatus.BAD_REQUEST, request, validationErrors);
}
@ExceptionHandler({ConstraintViolationException.class})
public ResponseEntity<Object> handleConstraintViolation(
ConstraintViolationException exception, WebRequest request) {
List<String> validationErrors = exception.getConstraintViolations().stream().
map(violation -> violation.getPropertyPath() + ": " + violation.getMessage())
.collect(Collectors.toList());
return getExceptionResponseEntity(HttpStatus.BAD_REQUEST, request, validationErrors);
}
private ResponseEntity<Object> getExceptionResponseEntity(final HttpStatus status, WebRequest request, List<String> errors) {
final Map<String, Object> body = new LinkedHashMap<>();
final String errorsMessage = CollectionUtils.isNotEmpty(errors) ? errors.stream().filter(StringUtils::isNotEmpty).collect(Collectors.joining(",")):status.getReasonPhrase();
final String path = request.getDescription(false);
body.put("TIMESTAMP", Instant.now());
body.put("STATUS", status.value());
body.put("ERRORS", errorsMessage);
body.put("PATH", path);
body.put("MESSAGE", status.getReasonPhrase());
return new ResponseEntity<>(body, status);
}
}
导入org.apache.commons.collections4.CollectionUtils;
导入org.apache.commons.lang3.StringUtils;
导入org.springframework.http.HttpHeaders;
导入org.springframework.http.HttpStatus;
导入org.springframework.http.ResponseEntity;
导入org.springframework.web.bind.MethodArgumentNotValidException;
导入org.springframework.web.bind.annotation.ControllerAdvice;
导入org.springframework.web.bind.annotation.ExceptionHandler;
导入org.springframework.web.context.request.WebRequest;
导入org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
导入javax.validation.ConstraintViolationException;
导入java.time.Instant;
导入java.util.LinkedHashMap;
导入java.util.List;
导入java.util.Map;
导入java.util.stream.collector;
/**
**处理使用@Valid注释的所有端点收入数据的所有异常和java bean验证错误
*
*@作者Ehab Qadah
*/
@控制器建议
公共类GeneralExceptionHandler扩展了ResponseEntityExceptionHandler{
@凌驾
受保护的ResponseEntity handleMethodArgumentNotValid异常(MethodArgumentNotValidException异常,HttpHeaders标头,
HttpStatus状态,WebRequest请求){
List validationErrors=exception.getBindingResult()
.getFieldErrors()
.stream()
.map(错误->错误.getField()+”:“+错误.getDefaultMessage())
.collect(Collectors.toList());
返回getExceptionResponseEntity(HttpStatus.BAD_请求、请求、验证错误);
}
@ExceptionHandler({ConstraintViolationException.class})
公共责任处理培训暴力(
ConstraintViolationException异常,WebRequest请求){
List validationErrors=exception.getConstraintViolations().stream()。
映射(违例->违例.getPropertyPath()+”:“+违例.getMessage())
.collect(Collectors.toList());
返回getExceptionResponseEntity(HttpStatus.BAD_请求、请求、验证错误);
}
private ResponseEntity getExceptionResponseEntity(最终HttpStatus状态、WebRequest请求、列表错误){
最终映射体=新LinkedHashMap();
最终字符串errorsMessage=CollectionUtils.isNotEmpty(错误)?errors.stream().filter(StringUtils::isNotEmpty)。collect(Collectors.joining(“,”):status.GetReasonPhase();
最终字符串路径=request.getDescription(false);
body.put(“TIMESTAMP”,Instant.now());
body.put(“STATUS”,STATUS.value());
body.put(“错误”,errorsMessage);
主体。放置(“路径”,路径);
body.put(“MESSAGE”,status.getReasonPhrase());
返回新的响应(主体、状态);
}
}
复制了@Ehab Qadah的答案
唯一的修改是在字符串映射(而不是字符串)中提供带有原因的错误字段
@ExceptionHandler({ConstraintViolationException.class})
public ResponseEntity<Object> handleConstraintViolation(
ConstraintViolationException exception, WebRequest request) {
Map<String, String> fieldErrors = ex.getConstraintViolations().stream()
.collect(Collectors.toMap(cv -> cv.getPropertyPath().toString(), ConstraintViolation::getMessage));
return getExceptionResponseEntity(HttpStatus.BAD_REQUEST, request, fieldErrors);
}
private ResponseEntity<Object> getExceptionResponseEntity(final HttpStatus status, WebRequest request, List<String> errors) {
final Map<String, Object> body = new LinkedHashMap<>();
final String errorsMessage = CollectionUtils.isNotEmpty(errors) ? errors.stream().filter(StringUtils::isNotEmpty).collect(Collectors.joining(",")):status.getReasonPhrase();
final String path = request.getDescription(false);
body.put("TIMESTAMP", Instant.now());
body.put("STATUS", status.value());
body.put("ERRORS", errorsMessage);
body.put("PATH", path);
body.put("MESSAGE", status.getReasonPhrase());
return new ResponseEntity<>(body, status);
}
@ExceptionHandler({ConstraintViolationException.class})
公共责任处理培训暴力(
ConstraintViolationException异常,WebRequest请求){
Map fieldErrors=ex.getConstraintViolations().stream()
.collect(Collectors.toMap(cv->cv.getPropertyPath().toString(),ConstraintViolation::getMessage));
返回getExceptionResponseEntity(HttpStatus.BAD_请求,请求,fi