Axis2发布webservice（4）—webservice的异步调用

一，发布一个webservice，代码如下

package com.hoo.service;


public class AsynchronousService {

    public String execute() throws InterruptedException{
        
        //让当前线程睡眠5钟，展示异步调用
        Thread.sleep(5000);
        
        return "done";
    }
}

二、发布Service，参见前面教程，不多讲

三、RPC方式异步调用：

import java.io.IOException;

import javax.xml.namespace.QName;

import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.async.AxisCallback;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.rpc.client.RPCServiceClient;

public class AsynchronousServiceClient {

    public static void main(String[] args) throws IOException {
        String target = "http://localhost:8080/axis2/services/AsynchronousService";
        RPCServiceClient client = new RPCServiceClient();
        Options options = client.getOptions();
        options.setManageSession(true);
        
        EndpointReference epr = new EndpointReference(target);
        options.setTo(epr);
        
        QName qname = new QName("http://service.hoo.com", "execute");
    
        //指定调用的方法和传递参数数据，及设置返回值的类型，前面两个参数跟同步调用没区别，关键是后面一个参数，用到了AxisCallback类
        client.invokeNonBlocking(qname, new Object[] {}, new AxisCallback() {
            
            public void onMessage(MessageContext ctx) {
                System.out.println(ctx.getEnvelope());
                
               //获取返回值并打印
                System.out.println("Message:" + ctx.getEnvelope().getFirstElement().getFirstElement().getFirstElement().getText());
            }
            
            public void onFault(MessageContext ctx) {
            }
            
            public void onError(Exception ex) {
            }
            
            public void onComplete() {
            }
        });
        
        System.out.println("Client：异步调用WebService");
        
        //阻止程序退出
        System.in.read();
    }
}

程序输出：

Client：异步调用WebService
     <?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ns:executeResponse xmlns:ns="http://service.hoo.com"><ns:return>done</ns:return></ns:executeResponse></soapenv:Body></soapenv:Envelope>
      Message:done

四、Stub类异步调用

   首先，生成该webservice的wsdl文件，然后用wsdl文件生成Java源代码，方法参见http://www.cnblogs.com/hewenwu/p/3860083.html

五、编写客户端异步调用代码

package test;

import java.io.IOException;
import java.rmi.RemoteException;

import org.apache.axis2.AxisFault;

import com.hoo.service.AsynchronousServiceCallbackHandler;
import com.hoo.service.AsynchronousServiceStub;
import com.hoo.service.Execute;
import com.hoo.service.ExecuteResponse;

public class AsynchronousServiceClient {

    public static void main(String[] args) throws IOException {
        AsynchronousServiceStub stub = new AsynchronousServiceStub();
        stub.startexecute(new Execute(), new MyCallback());
        System.out.println("异步调用");
        System.in.read();
    }

}

//必须重新定义一个继承自相应CallbackHandler的类并重写receiveResult方法才能在main中调用
class MyCallback extends AsynchronousServiceCallbackHandler{
    
    @Override
    public void receiveResultexecute(ExecuteResponse result) {
        
        super.receiveResultexecute(result);
        System.out.println(result.get_return());
    }
}

输出结果：

异步调用
      done