How to set Spring HttpComponentsClientHttpRequestFactory with Apache httpcomponent5?

1 answer

I'm trying to set httpClient5 in Spring ... I have the following code:

PoolingHttpClientConnectionManager connectionManager = PoolingHttpClientConnectionManagerBuilder.create()                 .setSSLSocketFactory(SSLConnectionSocketFactoryBuilder.create()                         .setSslContext(SSLContexts.createSystemDefault())                         .setTlsVersions(TLS.V_1_3, TLS.V_1_2)                         .build())                 .setDefaultSocketConfig(SocketConfig.custom()                         .setSoTimeout(Timeout.ofSeconds(5))                         .build())                 .setPoolConcurrencyPolicy(PoolConcurrencyPolicy.STRICT)                 .setConnPoolPolicy(PoolReusePolicy.LIFO)                 .setConnectionTimeToLive(TimeValue.ofMinutes(1L))                 .build();          CloseableHttpClient client = HttpClients.custom()                 .setConnectionManager(connectionManager)                 .setDefaultRequestConfig(RequestConfig.custom()                         .setConnectTimeout(Timeout.ofSeconds(5))                         .setResponseTimeout(Timeout.ofSeconds(5))                         .setCookieSpec(StandardCookieSpec.STRICT)                         .build())                 .build();          CookieStore cookieStore = new BasicCookieStore();          CredentialsProvider credentialsProvider = new BasicCredentialsProvider();          HttpClientContext clientContext = HttpClientContext.create();         clientContext.setCookieStore(cookieStore);         clientContext.setCredentialsProvider(credentialsProvider);         clientContext.setRequestConfig(RequestConfig.custom()                 .setConnectTimeout(Timeout.ofSeconds(5000))                 .setResponseTimeout(Timeout.ofSeconds(5000))                 .build());            // connect Spring httpComponent (client-side) with Apache httpClient         HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();         httpRequestFactory.setReadTimeout(60000);         httpRequestFactory.setConnectTimeout(60000);         httpRequestFactory.setHttpClient(client); 

the class ClosableHttpClient implements the interface org.apache.hc.client5.http.classic.HttpClient that is not compatible with setHttpClient(client); this the runtime error:

java.lang.ClassCastException: class org.apache.hc.client5.http.impl.classic.InternalHttpClient cannot be cast to class org.apache.http.client.HttpClient (org.apache.hc.client5.http.impl.classic.InternalHttpClient and org.apache.http.client.HttpClient are in unnamed module of loader 'app') 

I'm using Spring 5.0 and HttpComponents-client-5. How to convert HttpClient 4.X to HttpClient 5 ?

All answers to this question, which has the identifier 61210545

The best answer:

Apache HttpClient 4.5 and HttpClient 5.0 classic are very similar but are fully API incompatible.

Until Spring provides Apache HttpClient 5.x based RequestFactory implementation one cannot integrate HttpClient 5.x with Spring.

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