webservice教程

源文件：http://ychx7.spaces.live.com/blog/cns!ba7ed89939b141d7!119.entry

Axis支持三种web service的部署和开发，分别为：
1、Dynamic Invocation Interface ( DII)
2、Stubs方式
3、Dynamic Proxy方式
二、编写DII(Dynamic Invocation Interface )方式web服务
1.编写服务端程序HelloClient

public class HelloClient
{
  public String getName(String name)
  {
    return "hello "+name;
  }
}

2、将源码拷贝到Axis_HOME下，重命名为 HelloClient.jws
3、访问连接http://localhost:8080/Axis/HelloClient.jws?wsdl，页面显示Axis自动生成的wsdl
4、编写访问服务的客户端 TestHelloClient.java

import org.apache.Axis.client.Call;
import org.apache.Axis.client.Service;
import javax.xml.namespace.QName;
import javax.xml.rpc.ServiceException;
import java.net.MalformedURLException;
import java.rmi.RemoteException;
public class SayHelloClient2
{
public static void main(String[] args)
{
   try
   {
      String endpoint ="http://localhost:8080/Axis/HelloClient.jws";
     Service service = new Service();
     Call call = null;
     call = (Call) service.createCall();
     call.setOperationName(new QName("http://localhost:8080/Axis/HelloClient.jws","getName"));
     call.setTargetEndpointAddress(new java.net.URL(endpoint));
    String ret = (String) call.invoke(new Object[]{"zhangsan"});
    System.out.println("return value is " + ret);
 } catch (Exception ex)
  {
     ex.printStackTrace();
  }
 }
}

三、编写Dynamic Proxy方式访问服务
1、编写部署服务端程序，同上边DII方式，本次仍使用上边部署的HelloClient
2、编写代理接口
?

public interface HelloClientInterface
extends java.rmi.Remote
{
   public String getName(String name)
    throws java.rmi.RemoteException;
}

3、编写并执行客户端程序TestHelloClient.java

import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;
import java.net.URL;
import javax.xml.namespace.QName;
public class TestHelloClient
{
   public static void main(String[] args)
   {
    try
    {
     String wsdlUrl ="http://localhost:8080/Axis/HelloClient.jws?wsdl";
     String nameSpaceUri ="http://localhost:8080/Axis/HelloClient.jws";
     String serviceName = "HelloClientService";
     String portName = "HelloClient";
     ServiceFactory serviceFactory =ServiceFactory.newInstance();
     Service afService = serviceFactory.createService(new URL(wsdlUrl),new QName(nameSpaceUri,serviceName));
     HelloClientInterface proxy = (HelloClientInterface)afService.getPort(new QName(nameSpaceUri,portName),HelloClientInterface.class);
     System.out.println("return value is "+proxy.getName("john") ) ;
   }catch(Exception ex)
    {
      ex.printStackTrace() ;
    }
  }
}

四、编写wsdd发布web服务，编写stub client访问web服务
1、编写服务端程序server,SayHello.java，编译server.SayHello.java

package server;
public class SayHello
{
public String getName(String name)
{
return "hello "+name;
}
}

2.编写LogHandler.java

import org.apache.Axis.AxisFault;
import org.apache.Axis.Handler;
import org.apache.Axis.MessageContext;
import org.apache.Axis.handlers.BasicHandler;
import java.util.Date;
public class LogHandler extends BasicHandler
{
public void invoke(MessageContext msgContext)throws AxisFault
{
     /** Log an access each time
       we get invoked.
      */
try {
   Handler serviceHandler = msgContext.getService();
   Integer numAccesses = (Integer)serviceHandler.getOption("accesses");
   if (numAccesses == null)
    numAccesses = new Integer(0);
    numAccesses = new Integer(numAccesses.intValue() + 1);
    Date date = new Date();
    String result = date + ": service " + msgContext.getTargetService() +" accessed " + numAccesses + " time(s).";
    serviceHandler.setOption("accesses",numAccesses);
    System.out.println(result);
}catch (Exception e)
{
    throw AxisFault.makeFault(e);
}
}
}

3、编写wsdd文件

deploy.wsdd
＜deployment xmlns=
"http://xml.apache.org/Axis/wsdd/"
xmlns:java=
"http://xml.apache.org/Axis/wsdd/providers/java">
＜handler name="print" type="java:LogHandler"/>
＜service name="sayhello"
provider="java:RPC">
＜requestFlow>
＜handler type="print"/>
＜/requestFlow>
＜parameter name="className"
value="server.SayHello"/>
＜parameter name="allowedMethods"
value="*"/>
＜/service>
＜/deployment>

3、将编译后的文件拷贝到Axis_HOME/WEB-INF/classes下，如：D:tomcatwebappsAxisWEB-INFclasses
4、发布服务：

java org.apache.Axis.client.AdminClient deploy.wsdd

5、生成client stub文件
? a:方式1
??将SayHello.java拷贝到Axis_HOME/下，重命名为SayHello.jws，执行下面的命令生存client stub
??

java org.apache.Axis.wsdl.WSDL2Java -p client http://localhost:8080/Axis/services/SayHello.jws?wsdl

b:方式2
执行如下命令生成SayHello.wsdl

java org.apache.Axis.wsdl.Java2WSDL -oSayHello.wsdl -lhttp://localhost:8080/Axis/services/SayHello -nsayhello server.SayHello

执行如下命令生成client stub

java org.apache.Axis.wsdl.WSDL2Java 

SayHello.wsdl -p client

生成的stub client文件列表为：
1.SayHello.java
2.SayHelloService.java。
3.SayHelloServiceLocator.java
4.SayHelloSoapBindingStub.java
6、编写客户端程序，编译并执行

public class SayHelloClient
{
public static void main(String[] args)
{
   try
   {
     SayHelloService service = new client.SayHelloServiceLocator();
     client.SayHello_PortType
     client = service.getSayHello();
     String retValue=client.getName("zhangsan");
     System.out.println(retValue);
}
catch (Exception e)
{
  System.err.println("Execution failed. Exception: " + e);
}
}
}