使用JWSDP完成Web Service在java的入门(四)

王朝java/jsp·作者佚名  2008-05-31
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其中的各个任务都有说明.

注重,假如你使用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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