DELETE in Spring RestTemplate with HttpEntity<List>

问题

I don't know why my code is not working, I've tried with Postman and works fine:

But with RestTemplate I can´t get a response while it´s using the same endpoint... .

ResponseEntity<String> responseMS  = template.exchange(notificationRestService, HttpMethod.DELETE, new HttpEntity<NotificationRestDTO[]>(arrNotif), String.class);

I've tried with List instead Array[]

When i made a PUT request it´s works fine but with one object:

ResponseEntity<String> responseMS = template.exchange(notificationRestService, HttpMethod.PUT, new HttpEntity<NotificationRestDTO>(notificationDTO), String.class);

Any help?? Thanks!!

回答1:

From the comments it became clear that you're expecting it to return a 400 Bad Request response. RestTemplate will see these as "client errors" and it will throw a HttpClientErrorException.

If you want to handle cases like this, you should catch this exception, for example:

try {
    ResponseEntity<String> responseMS  = template.exchange(notificationRestService, HttpMethod.DELETE, new HttpEntity<NotificationRestDTO[]>(arrNotif), String.class);
} catch (HttpClientErrorException ex) {
    String message = ex.getResponseBodyAsString();
}

In this case (since you expect a String), you can use the getResponseBodyAsString() method.

---

The ResponseEntity will only contain the data in case your request can be executed successfully (2xx status code, like 200, 204, ...). So, if you only expect a message to be returned if the request was not successfully, you can actually do what Mouad mentioned in the comments and you can use the delete() method of the RestTemplate.

来源：https://stackoverflow.com/questions/42484852/delete-in-spring-resttemplate-with-httpentitylist