RestTemplate请求中的java连接超时无法正常工作

1 年，8 月 Questions & Answers 8901

我正在使用RestTemplate从外部服务获取数据，我想为请求设置超时，如下所示：

        CloseableHttpClient client = HttpClients.custom().setDefaultRequestConfig(RequestConfig.custom().setConnectTimeout(600000).setConnectionRequestTimeout(600000).setSocketTimeout(600000).build()).build();

        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        requestFactory.setHttpClient(client);
        requestFactory.setConnectTimeout(600000);
        requestFactory.setConnectionRequestTimeout(600000);
        requestFactory.setReadTimeout(600000);

        RestTemplate restTemplate = new RestTemplate(requestFactory);

        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Basic " + settings.getBase64EncodedAuthString());
        headers.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<BaseParameters> request = new HttpEntity<>(parameters, headers);

        ResponseEntity<MyResponse> response = restTemplate.exchange("https://my-external-service.com/service1", HttpMethod.POST,
                    request, MyResponse.class);

虽然我已经将超时设置为600000ms（10分钟），但有时我还是在20秒后从服务器收到超时异常，这是我得到的异常：

org.springframework.web.client.ResourceAccessException -> I/O error on POST request for "https://my-external-service.com/service1": Connect to my-external-service.com:443 failed: Connection timed out: connect; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to my-external-service.com:443 failed: Connection timed out: connect

有人知道我是在这里把超时配置搞错了还是需要配置更多的东西吗？多谢各位

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RestTemplate请求中的java连接超时无法正常工作

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