如何在RESTEasy客户端框架中设置HTTP标头？

Question

RESTEasy（一个JAX-RS实现）有一个很好的客户端框架 ，例如：

RegisterBuiltin.register(ResteasyProviderFactory.getInstance());

SimpleClient client = ProxyFactory.create(SimpleClient.class, "http://localhost:8081");
client.putBasic("hello world");

你如何设置HTTP标头？

澄清：

jkeeler提出的解决方案是一个很好的方法，但我想在ProxyFactory级别设置HTTP标头，我不想将标头传递给客户端对象。 有任何想法吗？

Answer 1

使用RestEasy 3.x我使用ClientRequestFilters。 在下面的示例中，有一个持续集成（CI）服务器侦听在后台运行的请求。 测试和CI服务器使用相同的数据库和实体类。

假设名为“test-tenant”的租户确实存在，并且存在属于该租户的用户“root”，并且用户具有下面指定的密码。

private static final String BASE_URI = "http://localhost:" + PORT;
@Test(groups = "functionalTests")
public void testGetTenant() throws Exception {
    Client client = ClientBuilder.newClient();
    ResteasyWebTarget target = (ResteasyWebTarget)client.target(BASE_URI);
    client.register(new AddAuthHeadersRequestFilter("root", "DefaultPasswordsAre:-("));
    TenantResource resource = target.proxy(TenantResource.class);

    RestTenant restTenant = resource.getTenant(tenant.id().value().toString());

    assertThat(restTenant.getName(), is("test-tenant"));
    assertThat(restTenant.isActive(), is(true));
}

和AddAuthHeadersRequestFilter类：

public static class AddAuthHeadersRequestFilter implements ClientRequestFilter {

    private final String username;
    private final String password;

    public AddAuthHeadersRequestFilter(String username, String password) {
        this.username = username;
        this.password = password;
    }

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        String token = username + ":" + password;
        String base64Token = Base64.encodeBase64String(token.getBytes(StandardCharsets.UTF_8));
        requestContext.getHeaders().add("Authorization", "Basic " + base64Token);
    }
}

import语句（假设您只是将测试和静态类粘贴到一个TestNg测试类文件中）：

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import org.jboss.resteasy.client.jaxrs.ResteasyWebTarget;
import org.testng.annotations.Test;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import org.apache.commons.codec.binary.Base64;

Answer 2

在客户端代理界面中，使用@HeaderParam注释：

public interface SimpleClient
{
   @PUT
   @Path("basic")
   @Consumes("text/plain")
   public void putBasic(@HeaderParam("Greeting") String greeting);
}

上面示例中的调用将添加如下所示的HTTP标头：

Greeting: hello world

Answer 3

我找到了一个解决方案：

import org.apache.commons.httpclient.HttpClient;
import org.jboss.resteasy.client.ClientRequest;
import org.jboss.resteasy.client.ClientResponse;
import org.jboss.resteasy.client.ProxyFactory;
import org.jboss.resteasy.client.core.executors.ApacheHttpClientExecutor;
import org.jboss.resteasy.plugins.providers.RegisterBuiltin;
import org.jboss.resteasy.spi.ResteasyProviderFactory;

RegisterBuiltin.register(ResteasyProviderFactory.getInstance());
HttpClient httpClient = new HttpClient();
ApacheHttpClientExecutor executor = new ApacheHttpClientExecutor(httpClient) {
    @Override
    public ClientResponse execute(ClientRequest request) throws Exception {
        request.header("X-My-Header", "value");
        return super.execute(request);
    }           
};

SimpleClient client = ProxyFactory.create(SimpleClient.class, "http://localhost:8081", executor);
client.putBasic("hello world");

Answer 4

更简单：

    ResteasyClient client = new ResteasyClientBuilder().build();
    ResteasyWebTarget target = client.target("https://test.com");
    Response response = target.request().header("Authorization", "Basic test123")
            .acceptEncoding("gzip, deflate")
            .post(Entity.entity(some_xml, "application/x-www-form-urlencoded"));