booksearcherclient.java

JAX-RPC 构建 RPC 服务和客户机,使用 Java API 构建基于 RPC 的 Web 服务

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import javax.xml.namespace.QName;
import javax.xml.rpc.ServiceException;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;

public class BookSearcherClient {

  public static final String SERVICE_URL =
    "http://localhost:8080/axis/BookSearcher.jws";

  private Service service;
  private Call call;
  private URL serviceUrl;

  public BookSearcherClient() { }

  public Object[] search(String keyword) throws IOException {
    try {
      if (service == null) {
        service = new Service();
      }
      if (call == null) {
        call = (Call)service.createCall();
      }
      if (serviceUrl == null) {
        serviceUrl = new URL(SERVICE_URL);
      }
      call.setTargetEndpointAddress(serviceUrl);
     
      // Select operation to call
      call.setOperationName(new QName("http://soapinterop.org/", 
                            "search"));

      // Make call and get result
      Object[] results = (Object[])call.invoke(new Object[] { keyword });

      return results;
    } catch (MalformedURLException e) {
      throw new IOException("Error creating service URL at " + SERVICE_URL);
    } catch (ServiceException e) {
      throw new IOException("Error creating service call: " + e.getMessage());
    }
  }

  public static void main(String[] args) throws IOException {
    if (args.length != 1) {
      System.err.println("Usage: java BookSearcherClient [search keyword]");
      return;
    }
    String keyword = args[0];
    BookSearcherClient client = new BookSearcherClient();
    Object[] results = client.search(keyword);
    System.out.println("Returned books for keyword '" + keyword + "':");
    for (int i = 0; i<results.length; i++) {
      System.out.println("  " + results[i]);
    }
  }
}