我正在学习Spring Boot,并且如果任何雇员字段在保存时为空,我想在保存时显示错误消息。但是orElseThrow
方法显示了错误。如何节省时间呢?
@ApiOperation(value = "Add an employee")
@PostMapping("/createemployee")
Employee createOrSaveEmployee(
@ApiParam(value = "Employee object store in database table", required = true)
@Valid
@RequestBody Employee newEmployee)
throws BadRequestExceptionHandler, ConstraintViolationException {
/*in below line orElseThrow method shows error
that create new method named as orElseThrow in Employee Pojo. */
return employeeRepository.save(newEmployee)
.orElseThrow(() -> new ConstraintViolationException("Required parameters can not be empty."));
}
最佳答案
Optional
退货可以使用orElseThrow()
处理。无需尝试这种方式,您几乎可以以这种方式涵盖相同的异常,也可以使用您自己的引发异常的方式。
try{
employeeRepository.save(newEmployee);
}catch(ConstraintViolationException e){
throw new OwnDefinedException("Required parameters can not be empty.");
}