Dropwizard Jersey客户示例

Question

Dropwizard 官方文档 jersey客户端无法测试，有人拥有dropwizard jersey客户端样本吗？

Answer 1

我发现在Dropwizard中实现我的客户也有些挑战。因此，如果有人遇到此问题，我想提供帮助。这是Dropwizard（v1.0.5）中的一个客户端，该客户端使用Multipart调用POST Web服务。客户端也可以通过Web服务使用GET访问。

我的pom.xml中的依赖项：

<dependencies>
<dependency>
    <groupId>io.dropwizard</groupId>
    <artifactId>dropwizard-core</artifactId>
    <version>${dropwizard.version}</version>
</dependency>
<dependency>
    <groupId>io.dropwizard</groupId>
    <artifactId>dropwizard-assets</artifactId>
    <version>${dropwizard.version}</version>
</dependency>
<dependency>
    <groupId>io.dropwizard</groupId>
    <artifactId>dropwizard-forms</artifactId>
    <version>${dropwizard.version}</version>
</dependency>
<dependency>
    <groupId>io.dropwizard</groupId>
    <artifactId>dropwizard-client</artifactId>
    <version>${dropwizard.version}</version>
</dependency>

</dependencies>

这是我的Dropwizard应用程序（Client2PostApplication.java）：

    public class Client2PostApplication extends Application<Client2PostConfiguration> {
    public static void main(String[] args) throws Exception {
        new Client2PostApplication().run(args);
    }

    @Override
    public void initialize(Bootstrap<Client2PostConfiguration> bootstrap) {
        bootstrap.addBundle(new MultiPartBundle());
    }

    @Override
    public void run(Client2PostConfiguration configuration,
                Environment environment) throws Exception {

        environment.jersey().register(MultiPartFeature.class);
        JerseyClientConfiguration conf = configuration.getJerseyClientConfiguration();

        conf.setChunkedEncodingEnabled(false);

        final Client client = new JerseyClientBuilder(environment).using(conf).build(getName());
        environment.jersey().register(new Client2Post(client));
        environment.jersey().register(new MyPostResource());       
    }
}

这是我的配置（Client2PostConfiguration.java）：

public class Client2PostConfiguration extends Configuration {

    @Valid
    @NotNull
    private JerseyClientConfiguration jerseyClient = new JerseyClientConfiguration();

    @JsonProperty("jerseyClient")
    public JerseyClientConfiguration getJerseyClientConfiguration() {
        return jerseyClient;
    }
}

现在，发布Web服务（MyPostResource.java）：

@Path("/testpost")

public class MyPostResource {

    public MyPostResource() {

    }

    @POST
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    @Timed
    public String test(
        @FormDataParam("foo") String testData) throws IOException {
        return testData;
    }
}

最后，客户端（Client2Post.java）：

@Produces(MediaType.TEXT_PLAIN)
@Path("/client")
public class Client2Post {

    private Client client;

    public Client2Post(Client client) {
        this.client = client;
    }

    @GET
    @Path("/test")
    public String testPost() {

    final Invocation.Builder request = client.target("http://localhost:8080/testpost").register(MultiPartFeature.class).request();

    final FormDataMultiPart entity = new FormDataMultiPart()
            .field("foo", "bar");

    final String response = request.post(Entity.entity(entity, entity.getMediaType()), String.class);

    return response;

    }
}

完整的源代码可以从这里下载。