Error handling methods of HttpClient in java

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Description

1. HttpClient asynchronous request returns CompletableFuture, and its own exceptionally method can be used for fallback processing.

2. Unlike WebClient, HttpClient does not have the status code exception of 4xx or 5xx. It needs to be handled according to its own situation, and it can manually detect the status code exception or return other content.

Example

@ Test public void testHandleException () throws ExecutionException, InterruptedException {HttpClient client = HttpClient.newBuilder () .connectTimeout (Duration.ofMillis (5000)) .build (); HttpRequest request = HttpRequest.newBuilder () .uri (URI.create ("https://twitter.com")). Build ()) CompletableFuture result = client.sendAsync (request, HttpResponse.BodyHandlers.ofString ()) / / .complete ((resp,err)-> {/ / if (err! = null) {/ / err.printStackTrace (); / /} else {/ / System.out.println (resp.body () / / System.out.println (resp.statusCode ()); / /} / /}) .thenApply (HttpResponse::body) .adoptionally (err-> {err.printStackTrace (); return "fallback";}) System.out.println (result.get ());} above is the content of this article on "error handling of HttpClient in java". I believe everyone has a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.