泽西岛没有关注302重定向

Question

我正在连接到服务器,该服务器首先进入auth登录页面,然后重定向.

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);

这是一个例外:

线程"ThreadJob"中的异常com.sun.jersey.api.client.UniformInterfaceException:GET https:// url 在com.sun.jersey.api.client.WebResource.handle(WebResource.java中返回的响应状态为302) 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)

泽西岛版本1.19

Answer 1

我发现经常泽西很糟糕.您几乎认为他们意味着您要做这类事情并且他们添加"followRedirect"选项以简单地混淆用户.

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;
            }
        }

    }
}

这将是有效的,但显然不是正确的方法.这不是更糟糕,但是当存在多个重定向等时可能会给你带来麻烦.

@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);
        }

    }

}