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使用JWSDP完成Web Service在java的入门(四)


  其中的各个任务都有说明.
  
  注意,如果你使用JAX-RPC1.1.2的话,wsdeploy生成web.xml文件有些小错误,需要手工更改,这个问题在1.1.3中已经修正.
  
  好了,在Eclipse中运行各个任务,把最后得到的skysoft.war,作为一个新的应用发布,也可发布到你现有的应用,需要解压这个文件,然后拷贝需要的文件以及库文件到你的应用中即可.
  
  (四) 调用服务
  
  调用服务的方式有三种:静态调用,动态调用,动态调用接口.
  
  1 静态调用,使用了wscompile生成的静态桩文件.
  
  package hello;
  
  import javax.xml.rpc.Stub;
  
  import staticstub.*;
  
  public class HelloClient {
  
  private String endpointAddress;
  
  public static void main(String[] args) {
  
  args=new String[]{"http://localhost:8080/skysoft/hello?WSDL"};
  
  System.out.println("Endpoint address = " + args[0]);
  
  try {
  
  Stub stub = createProxy();
  
  stub._setProperty(javax.xml.rpc.Stub.ENDPOINT_ADDRESS_PROPERTY,
  
  args[0]);
  
  HelloIF hello = (HelloIF) stub;
  
  System.out.println(hello.sayHello("Duke!"));
  
  } catch (Exception ex) {
  
  ex.printStackTrace();
  
  }
  
  }
  
  private static Stub createProxy() {
  
  // Note: MyHelloService_Impl is implementation-specific.
  
  return (Stub) (new MyHelloService_Impl().getHelloIFPort());
  
  }
  
  }
  
  2 动态调用,主要是使用ServiceFactory来执行调用.
  
  package hello;
  
  import java.net.URL;
  
  import javax.xml.rpc.Service;
  
  import javax.xml.rpc.JAXRPCException;
  
  import javax.xml.namespace.QName;
  
  import javax.xml.rpc.ServiceFactory;
  
  //import dynamicproxy.HelloIF;
  
  import staticstub.HelloIF;
  
  public class DynClient {
  
  public static void main(String[] args) {
  
  try {
  
  args = new String[] { "http://localhost:8080/skysoft/hello" };
  
  
  String UrlString = args[0] + "?WSDL";
  
  String nameSpaceUri = "urn:Foo";
  
  String serviceName = "MyHelloService";
  
  String portName = "HelloIFPort";
  
  System.out.println("UrlString = " + UrlString);
  
  URL helloWsdlUrl = new URL(UrlString);
  
  ServiceFactory serviceFactory = ServiceFactory.newInstance();
  
  Service helloService = serviceFactory.createService(helloWsdlUrl,
  
  new QName(nameSpaceUri, serviceName));
  
  HelloIF myProxy = (HelloIF) helloService.getPort(new QName(
  
  nameSpaceUri, portName), HelloIF.class);
  
  System.out.println(myProxy.sayHello("Buzz"));
  
  } catch (Exception ex) {
  
  ex.printStackTrace();
  
  }
  
  }
  
  }
  
  3 动态调用接口(DII),这种方式不需要任何附加代码,根据WSDL提供的调用方法的元描述,动态确定方法及其参数返回类型,有些类似于CORBA的接口池提供的服务.
  
  package hello;
  
  import javax.xml.rpc.Call;
  
  import javax.xml.rpc.Service;
  
  import javax.xml.rpc.JAXRPCException;
  
  import javax.xml.namespace.QName;
  
  import javax.xml.rpc.ServiceFactory;
  
  import javax.xml.rpc.ParameterMode;
  
  public class DiiClient {
  
  private static String qnameService = "MyHelloService";
  
  private static String qnamePort = "HelloIF";
  
  private static String BODY_NAMESPACE_VALUE = "urn:Foo";
  
  private static String ENCODING_STYLE_PROPERTY = "javax.xml.rpc.encodingstyle.namespace.uri";
  
  private static String NS_XSD = "http://www.w3.org/2001/XMLSchema";
  
  private static String URI_ENCODING = "http://schemas.xmlsoap.org/soap/encoding/";
  
  public static void main(String[] args) {
  
  args=new String[]{"http://localhost:8080/skysoft/hello?WSDL"};
  
  System.out.println("Endpoint address dii = " + args[0]);
  
  try {
  
  ServiceFactory factory = ServiceFactory.newInstance();
  
  Service service = factory.createService(new QName(qnameService));
  
  QName port = new QName(qnamePort);
  
  Call call = service.createCall(port);
  
  call.setTargetEndpointAddress(args[0]);
  
  call.setProperty(Call.SOAPACTION_USE_PROPERTY, new Boolean(true));
  
  call.setProperty(Call.SOAPACTION_URI_PROPERTY, "");
  
  call.setProperty(ENCODING_STYLE_PROPERTY, URI_ENCODING);
  
  QName QNAME_TYPE_STRING = new QName(NS_XSD, "string");
  
  call.setReturnType(QNAME_TYPE_STRING);
  
  call.setOperationName(new QName(BODY_NAMESPACE_VALUE, "sayHello"));
  
  call.addParameter("String_1", QNAME_TYPE_STRING, ParameterMode.IN);
  
  String[] params = { "Murph!" };
  
  String result = (String) call.invoke(params);
  
  System.out.println(result);
  
  
  } catch (Exception ex) {
  
  ex.printStackTrace();
  
  }
  
  }
  
  }
  
  到此,这个Web Service入门描述就结束了,它提供了WS的Sun描述,以及在tomcat上发布服务的过程和一个构建脚本,借助jsp插件,使用Eclipse完成了一个简单的Web服务开发,发布,并用三种方式进行了测试.
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