Jersey does not follow 302 redirects
I am connecting to a server which goes to the login page first and then redirects.
ClientConfig config = new DefaultClientConfig();
config.getProperties().put(ClientConfig.PROPERTY_FOLLOW_REDIRECTS, true);
Client client = Client.create(config);
client.setFollowRedirects(true);
WebResource service = client.resource(UriBuilder.fromUri(url).build());
String output = service.path(resource)
.path(model)
.path(id)
.accept(MediaType.APPLICATION_JSON)
.get(String.class);
This is an exception:
Exception in thread "ThreadJob" com.sun.jersey.api.client.UniformInterfaceException: GET https: // url returned response status 302 Found on com.sun.jersey.api.client.WebResource.handle (WebResource.java:688) at com.sun.jersey.api.client.WebResource.access $ 200 (WebResource.java:74) at com.sun.jersey.api.client.WebResource $ Builder.get (WebResource.java:509)
Jersey version 1.19
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I find Jersey often sucks. You almost think they wanted you to do this sort of thing, and they added "followRedirect" options just to confuse the user.
import static org.junit.Assert.*;
import java.util.logging.Logger;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriBuilder;
import org.junit.Test;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.UniformInterfaceException;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.api.client.filter.ClientFilter;
import com.sun.jersey.api.client.filter.LoggingFilter;
public class TestJerseyRedirect {
@Test
public void test() {
ClientConfig config = new DefaultClientConfig();
config.getProperties().put(ClientConfig.PROPERTY_FOLLOW_REDIRECTS, true);
com.sun.jersey.api.client.Client client = Client.create(config);
client.setFollowRedirects(true);
LoggingFilter logging = new LoggingFilter(Logger.getAnonymousLogger());
WebResource service = client.resource(UriBuilder.fromUri("http://mail.google.com").build());
service.addFilter(logging);
try {
String output = service.path("mail")
.accept(MediaType.TEXT_HTML)
.get(String.class);
System.out.println(output);
} catch (UniformInterfaceException e) {
if (e.getResponse().getStatus() == 302) {
String location = e.getResponse().getHeaders().getFirst("Location");
WebResource service2 = client.resource(UriBuilder.fromUri(location).build());
service2.addFilter(logging);
String output2 = service2
.accept(MediaType.TEXT_HTML)
.get(String.class);
System.out.println(output2);
}
else {
e.printStackTrace();
throw e;
}
}
}
}
which will work but is clearly not suitable for this. This is worse, but can give you problems when there are, among other things, multiple redirects and the like.
@Test
public void testGoodWay() throws Exception {
ClientConfig config = new DefaultClientConfig();
config.getProperties().put(ClientConfig.PROPERTY_FOLLOW_REDIRECTS, true);
com.sun.jersey.api.client.Client client = Client.create(config);
client.setFollowRedirects(true);
LoggingFilter logging = new LoggingFilter(Logger.getAnonymousLogger());
WebResource service = client.resource(UriBuilder.fromUri("http://mail.google.com").build());
service.addFilter(logging);
service.addFilter(new RedirectFilter());
try {
String output = service.path("mail")
.accept(MediaType.TEXT_HTML)
.get(String.class);
System.out.println(output);
} catch (Exception e) {
e.printStackTrace();
}
}
class RedirectFilter extends ClientFilter {
@Override
public ClientResponse handle(ClientRequest cr) throws ClientHandlerException {
ClientHandler ch = getNext();
ClientResponse resp = ch.handle(cr);
if (resp.getClientResponseStatus().getFamily() != Response.Status.Family.REDIRECTION) {
return resp;
}
else {
// try location
String redirectTarget = resp.getHeaders().getFirst("Location");
cr.setURI(UriBuilder.fromUri(redirectTarget).build());
return ch.handle(cr);
}
}
}
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Change your conectorProvider for ApacheConnectorProvider () and FOLLOW_REDIRECTS properties to true. Example:
ClientConfig clientConfig = new ClientConfig();
clientConfig.connectorProvider(new ApacheConnectorProvider());
client = ClientBuilder.newClient(clientConfig);
Response response = client.target("YOUR_URL")
.property(ClientProperties.FOLLOW_REDIRECTS, true)**
.request()
.get();
Doc: https://jersey.java.net/documentation/latest/client.html#d0e4895
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