Fixing HttpClient warning "Invalid expires attribute" using fluent API

Question

I'm using the fluent API of HttpClient to make a GET request:

String jsonResult = Request.Get(requestUrl)
            .connectTimeout(2000)
            .socketTimeout(2000)
            .execute().returnContent().asString();

But for each request I get the following warning:

apr 07, 2016 12:26:46 PM org.apache.http.client.protocol.ResponseProcessCookies processCookies
WARNING: Invalid cookie header: "Set-Cookie: WMF-Last-Access=07-Apr-2016;Path=/;HttpOnly;Expires=Mon, 09 May 2016 00:00:00 GMT". Invalid 'expires' attribute: Mon, 09 May 2016 00:00:00 GMT

How can I fix this and keep using the fluent interface? Ideally I'd want a proper way to fix it, but since I don't really care about the cookies in my use case any solution that just allows me to stop displaying the warnings (besides redirecting stderr, cause I need that) is welcome.

Answer 1

默认的HttpClient很难理解最新的RFC兼容标头。

不要隐藏警告，只需切换到这样的标准cookie规范（HttpClient 4.4 +）：

    HttpClient httpClient = HttpClients.custom()
        .setDefaultRequestConfig(RequestConfig.custom()
            .setCookieSpec(CookieSpecs.STANDARD).build())
        .build();

Answer 2

如果您想使用HttpClientBuilder，可以使用以下sytax：

        HttpClient httpClient = HttpClientBuilder.create()
            .setDefaultRequestConfig(RequestConfig.custom()
                    .setCookieSpec(CookieSpecs.STANDARD).build()).build();

Answer 3

由于开发人员不想考虑对象模型，因此可以将HttpClient封装为RestTemplate的方式如下（如上面提到的@comiventor，特别是对于Spring Boot开发人员而言）。

RestTemplate的自定义程序，

public class RestTemplateStandardCookieCustomizer 
                         implements RestTemplateCustomizer {

    @Override
    public void customize(final RestTemplate restTemplate) {

        final HttpClient httpClient = HttpClients.custom()
            .setDefaultRequestConfig(RequestConfig.custom()
                .setCookieSpec(CookieSpecs.STANDARD).build())
            .build();

        restTemplate.setRequestFactory(
          new HttpComponentsClientHttpRequestFactory(httpClient)
        );
    }
}

并与RestTemplate Builder一起使用

var restTemplate = restTemplateBuilder.additionalCustomizers(
            new RestTemplateStandardCookieCustomizer()
        ).build();

Answer 4

解决：

System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.http.client.protocol.ResponseProcessCookies", "fatal");