我正在用spring boot 2开发Rest API,我试图创建一个ExceptionHandler,但它似乎不起作用。
我有以下@GetMapping方法:
@GetMapping("/customers/{customerId}")
public Customer getCustomerById(@PathVariable Long customerId) {
log.debug("### Enter: getCustomerById() for id: " + customerId);
Optional<Customer> customer = customerRepository.findById(customerId);
if (!customer.isPresent()) {
throw new CustomerNotFoundException("The customer with id: " + customerId + " was not found!");
}
return customer.get();
}
customerRepository是扩展CrudRepository接口的接口。
customerNotFoundException的@ExceptionHandler如下所示:
@ExceptionHandler(CustomerNotFoundException.class)
public final ResponseEntity handleCustomerNotFoundException
(CustomerNotFoundException customerNotFoundException, WebRequest webRequest) {
log.error("### Oups! We have a CustomerNotFoundException!!!");
ExceptionResponse exceptionResponse = new ExceptionResponse(
new Date(),
customerNotFoundException.getMessage(),
webRequest.getDescription(false));
return new ResponseEntity(customerNotFoundException, HttpStatus.NOT_FOUND);
}
我还对ResponseEntityExceptionHandler扩展类进行了如下注释:
@Slf4j
@RestController
@ControllerAdvice
public class CustomResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
问题是,当我调用数据库中不存在的customerId的请求时,我收到的不仅仅是CustomerNotFoundException消息,而是一个非常长的stacktrace:
{"cause":null,"stackTrace":[{"methodName":"getCustomerById","fileName":"CustomerResource.java","lineNumber":37,"className":"org.pdm.ib.pmt.router.controls.CustomerResource","nativeMethod":false},{"methodName":"invoke0","fileName":"NativeMethodAccessorImpl.java","lineNumber":-2,"className":"sun.reflect.NativeMethodAccessorImpl","nativeMethod":true},{"methodName":"invoke","fileName":"NativeMethodAccessorImpl.java","lineNumber":62,"className":"sun.reflect.NativeMethodAccessorImpl","nativeMethod":false},{"methodName":"invoke","fileName":"DelegatingMethodAccessorImpl.java","lineNumber":43,"className":"sun.reflect.DelegatingMethodAccessorImpl","nativeMethod":false},{"methodName":"invoke","fileName":"Method.java","lineNumber":498,"className":"java.lang.reflect.Method","nativeMethod":false},
等等...
问题出在哪里?
谢谢!
感谢@bestwishes,我找到了解决办法。这是回来的
new ResponseEntity(exceptionResponse, HttpStatus.NOT_FOUND)
而是返回
new ResponseEntity(customerNotFoundException, HttpStatus.NOT_FOUND)
在CustomResponseEntityExceptionHandler类的handleCustomerNotFoundException方法中。