Use apache httpclient as backend for jersey client base on PoolingHttpClientConnectionManager - httpclient

Question

i try to use apache httpclient as backend for jersey client to handle cookie automatically and here is my code
class ClientHelper {
public static HttpClientConnectionManager customConnectionManager() throws Exception {
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, new TrustManager[]{new X509TrustManager() {
#Override
public void checkClientTrusted(X509Certificate[] x509Certificates, String s)
throws CertificateException {
System.out.println("========checkClientTrusted=========");
}
#Override
public void checkServerTrusted(X509Certificate[] x509Certificates, String s)
throws CertificateException {
System.out.println("========checkServerTrusted==========");
}
#Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
}}, new SecureRandom());
SSLConnectionSocketFactory
sslConnectionSocketFactory =
new SSLConnectionSocketFactory(sslContext);
Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
.register("https", sslConnectionSocketFactory)
.register("http", PlainConnectionSocketFactory.getSocketFactory())
.build();
PoolingHttpClientConnectionManager phcc = new PoolingHttpClientConnectionManager(registry);
return phcc;
}
public static Client createClient() {
HttpClient apacheClient = null;
try {
apacheClient =
HttpClientBuilder.create().setConnectionManager(customConnectionManager()).build();
} catch (Exception e) {
e.printStackTrace();
}
Client client = new Client(new ApacheHttpClient4Handler(apacheClient,
new BasicCookieStore(),
true));
return client;
}
}
I try to use the apache httpclient as the backend of jersey client (in order to handle the cookie)
Then, I create a simple class to test client,
import com.sun.jersey.api.client.Client;
....
public class ApiTest {
private static Client client;
public String getAuth(String username, String passwd) {
Map<String, String> formParams = new HashMap<String, String>();
formParams.put("username", String.valueOf(username));
formParams.put("passwd", String.valueOf(passwd));
try {
String basePath = "https://xyzhost/login";
if (client == null) {
client = ClientHelper.createClient();
client.addFilter(new LoggingFilter(System.out));
}
WebResource webResource = client.resource(basePath);
ClientResponse response = webResource.type("application/x-www-form-urlencoded").accept("application/json")
.post(ClientResponse.class, processFormParams(formParams));
if (response != null) {
String authRes = response.getEntity(String.class);
response.close();
return authRes;
} else {
return null;
}
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
public String getSummary(){
try {
String basePath = "https://xyzhost/summary";
if (client == null) {
client = ClientHelper.createClient();
}
WebResource webResource = client
.resource(basePath);
ClientResponse response = webResource.type("application/x-www-form-urlencoded").accept("application/json")
.post(ClientResponse.class, processFormParams(formParams));
if (response != null) {
String serviceRes = response.getEntity(String.class);
response.close();
return serviceRes;
} else {
return null;
}
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
public static void main(String[] args) throws ApiException {
String username = "testuser";
String passwd = "testpasswd";
AuthApi apiTest = new ApiTest();
String auth =apiTest.getAuth(username, passwd);
String reslut1 = apiTest.getSummary();
String result2 = apiTest.getSummary();
String result3 = apiTest.getSummary();
String result4 = apiTest.getSummary();
}
}
So, I use the same client to hit the service under the same host.
I can success get the response for "auth" and "result1" but the client stuck in "result2" in the following part
ClientResponse response = webResource.type("application/x-www-form-urlencoded").accept("application/json")
.post(ClientResponse.class, processFormParams(formParams));
I try to modify the following part:
PoolingHttpClientConnectionManager phcc= new PoolingHttpClientConnectionManager(registry);
phcc.setDefaultMaxPerRoute(10);
then, ApiTest works, won't stuck. I guess there is some issue about the connection, since by default, the max per route for poolingHttpClientConnectionManager is 2, so my ApiTest will stuck in the 3rd request. I think the connection has been release since I have consume the response entity ,
if (response != null) {
String serviceRes = response.getEntity(String.class);
response.close();
return serviceRes;
}
but it seems not work at all, the connection seems not released.
anyone can help ? Appreciate!

Answer 1

I get one solution: switch the version of jersey-client from 1.17 to 1.18 , then problem solved!
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.18</version>
<scope>compile</scope>
</dependency>