使用jersey客户端的ReSTful api出错

Question

我正在使用Jersey客户端实现ReST api。 ReST在POSTMAN中运行良好。它需要2个表单数据参数。

以下是我的代码。

package demo;

import java.net.URI;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriBuilder;

import org.glassfish.jersey.client.ClientConfig;

public class ReSTCallToICRT {

    private static final String webServiceURI = "my-post-uri";

    public static void main(String[] args) {

        ClientConfig clientConfig = new ClientConfig();
        Client client = ClientBuilder.newClient(clientConfig);
        URI serviceURI = UriBuilder.fromUri(webServiceURI).build();
        WebTarget webTarget = client.target(serviceURI);

        Form form = new Form();

        form.param("parameter1", "value1");
        form.param("parameter2", "value2");

        String callResult = webTarget.request(MediaType.TEXT_PLAIN).post(Entity.entity(form,MediaType.MULTIPART_FORM_DATA_TYPE),String.class);

        System.out.println(callResult);

    }

}

在eclipse中作为Java项目运行时，我收到以下错误

Exception in thread "main" javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error
    at org.glassfish.jersey.client.JerseyInvocation.convertToException(JerseyInvocation.java:1020)
    at org.glassfish.jersey.client.JerseyInvocation.translate(JerseyInvocation.java:816)
    at org.glassfish.jersey.client.JerseyInvocation.access$700(JerseyInvocation.java:92)
    at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:700)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
    at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:696)
    at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:448)
    at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:349)
    at demo.ReSTCallToICRT.main(ReSTCallToICRT.java:31)

我在这里错过了什么吗？