web service中Handler的高级应用

1.编写服务器端代码:

package pack.java.web.service.handler;

import org.apache.axis.AxisFault;
import org.apache.axis.MessageContext;
import org.apache.axis.handlers.BasicHandler;

/***
 * 服务器端代码;
 * 继承basicHandler 抽象类，并且实现invoke方法;
 * @author Administrator
 *
 */
public class MyHandler extends BasicHandler{
	//版本号;
	private static final long serialVersionUID = 1453729851511344780L;
	
	private static long  COUNT =0L;
	private int requestCount = 0;
	
	//请求,调用;
	public void invoke(MessageContext arg0) throws AxisFault {
		// TODO Auto-generated method stub
		requestCount++;
		COUNT++;
		String status = (String)this.getOption("status");
		System.out.println("My Handler's status is:"+status+",count="+COUNT+",requestCount="+this.requestCount);
	}
}

 

2.编写myHandler.dess文件.

<deployment xmlns="http://xml.apache.org/axis/wsdd/"
 xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">
	<handler name="MyHandler" type="java:pack.java.web.service.handler.MyHandler">
		<parameter name="status" value="success" />
	</handler>
	<service name="MyHandlerWSDD" provider="java:RPC">
		<!-- Handler配置之前处理 -->
		<requestFlow>
			<handler type="MyHandler" />
		</requestFlow>
		
		<!-- 服务器的包和类,方法,范围范围配置. -->
		<parameter name="className" value="pack.java.web.service.WebServiceWSDD" />
 		<parameter name="allowedMethods" value="*"/>
 		<parameter name="scope" value="request"/>
 		
 		<!-- 通过 <requestFlow> 这个标签,引用到 WebServiceWSDD中,来处理.-->
		<requestFlow>
			<handler type="MyHandler"/>
		</requestFlow>
	</service>
</deployment>

 

3.拷贝myHandler.wsdd文件到Tomcat目录下的axis的Web-INF中,

 

 

4.发布web service.

F:\apache-tomcat-6.0.20\webapps\axis\WEB-INF>java -Djava.ext.dirs=lib org.apache.axis.client.AdminClient -l http://localhost:9999/axis/services/MyHandlerWSDD myHandler.wsdd

 

发布结果:

Processing file myHandler.wsdd
<Admin>Done processing</Admin>

 

5.在浏览器中输入:获得url.

http://localhost:9999/axis/services/MyHandlerWSDD

浏览器中显示结果:

MyHandlerWSDD

Hi there, this is an AXIS service!

Perhaps there will be a form for invoking the service here...

 

5.编写客户端代码,

package pack.java.web.service.client.handler;

import java.rmi.RemoteException;

import javax.xml.namespace.QName;
import javax.xml.rpc.ServiceException;

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;

/***
 * 客户端;调用服务器端的方法;
 * @author Administrator
 *
 */
public class HandlerClientTest {
	
	/**
	 * 测试主方法;
	 * @param args
	 */
	public static void main(String[]args){
			String url="http://localhost:9999/axis/services/MyHandlerWSDD";
			Service service	=new Service();
			try {
				Call call=(Call) service.createCall();
				call.setTargetEndpointAddress(url);
				call.setOperationName(new QName(url,"hello"));
				try {
					String result=(String) call.invoke(new Object[]{"Peng Xiao Ting ",519});
					System.out.println(result);
				} catch (RemoteException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			} catch (ServiceException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	}
}

 

 

调用hello方法时,在控制台得出的结果:

Peng Xiao Ting 520。

 

服务器端返回的结果:

 

- Unable to find config file.  Creating new servlet engine config file: /WEB-INF/server-config.wsdd
My Handler's status is:success,count=1,requestCount=1
this is my hello method.
a=Peng Xiao Ting
b=520
result=520
My Handler's status is:success,count=2,requestCount=2
this is my hello method.
a=Peng Xiao Ting
b=520
result=520
My Handler's status is:success,count=3,requestCount=3
this is my hello method.
a=Peng Xiao Ting
b=519
result=519