HTTP 500 内部服务器基于 REST 的简单程序中的错误。在从服务器接收/发送响应时在 GET 和 POST 中感到困惑

我第一次使用 REST 服务实现基本的客户端服务器体系结构。这一次，我通过包含更多的类和服务来使其更加复杂，并在客户端和服务器之间共享类对象作为参数。我在ApacheTomcat7上运行服务器。它正在成功执行。当我运行我的客户端时，它给我错误：我尝试调试我的代码，似乎我没有正确接收/发送响应。我知道在这里分享所有课程是不明智的，但我别无选择，因为它浪费了很多我的时间。任何帮助将不胜感激。提前致谢。javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error

以下是我的 ImageProgress 类。此类同时存在于服务器和客户端。

@XmlRootElement
public class ImageProgress{
    private String name;

    public ImageProgress( String image_name){
        this.name = image_name;
    }

    public String getName() {
        return name;
    }

    public void setName( String name ){
        this.name = name;
    }
}

HPCResponse 是其对象将作为服务器响应返回到客户端的类。HPCResponse基本上将返回ImageProgress对象，这将为我提供预期的结果。

@XmlRootElement
public class HPCResponse
{
    private ImageProgress imgProgress;

    public ImageProgress getImgProgress() {
        return imgProgress;
    }

    public void setImgProgress(ImageProgress imgProgress) {
        this.imgProgress = imgProgress;
    }
}

下面是来自名为 HpcService 的服务器的服务类，它将返回 HPCResponse 的对象作为响应。如您所见，方法 startAnalysing 接受 HPCInfo 的对象。HPCInfo的描述也如下。

@Path( "/hpc" )
@Consumes( MediaType.APPLICATION_XML )
@Produces( MediaType.APPLICATION_XML )
public class HpcService{

    public HPCInfo hpcInfo;
    public HPCResponse hpcResponse;

    @POST
    @Path( "/analyze" )
    public HPCResponse startAnalysing(HPCInfo _hpcInfo){

        System.out.println( "Started Analyzing..." );

        hpcInfo = _hpcInfo;
        hpcInfo.getImagePath();        

        hpcResponse = new HPCResponse();
        ImageProgress iProg = new ImageProgress(hpcInfo.getImagePath());
        hpcResponse.setImgProgress(iProg);

        System.out.println("Returning response...");
        return hpcResponse;
    }
}

HPCInfo 类也同时位于客户端和服务器上。HPCInfo 类：

    @XmlRootElement
    public class HPCInfo
    {
        private String imagePath = "";

        public String getImagePath(){
            return imagePath;
        }

        public void setImagePath( String imagePath ){
            this.imagePath = imagePath;
        }
    }

最后，我的客户要求使用 HPCService。

public class TestClient {
    private static String webServiceURI = "http://localhost:8080/TestServer123";
    public static void main(String[] args) {
        String input = "ABNKidney.scn";
        ClientConfig clientConfig = new ClientConfig();
        Client client = ClientBuilder.newClient(clientConfig);
        URI serviceURI = UriBuilder.fromUri(webServiceURI).build();

        WebTarget webTarget = client.target(serviceURI);

        HPCInfo info = new HPCInfo();
        info.setImagePath(input);

        webTarget = webTarget.path("test").path("hpc").path("analyze");

        HPCResponse hResponse = webTarget.request().accept(MediaType.APPLICATION_XML).post(Entity.entity(info, MediaType.APPLICATION_XML), HPCResponse.class);
    }
}

这是我得到的完整错误描述：

javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error
    at org.glassfish.jersey.client.JerseyInvocation.convertToException(JerseyInvocation.java:968)
    at org.glassfish.jersey.client.JerseyInvocation.translate(JerseyInvocation.java:795)
    at org.glassfish.jersey.client.JerseyInvocation.access$500(JerseyInvocation.java:91)
    at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:683)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:424)
    at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:679)
    at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:435)
    at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:338)
    at com.TestClient.main(TestClient.java:34)