Apache Axis是Apache WebService项目中的子项目,其最初起源于IBM的"SOAP4J",应该属于最早的一批用于构造基于SOAP应用的Framework。 

目前Apache Axis已经发展到了第三代,其核心是一个SOAP处理器,用于开发包括客户端,服务器端,SOAP Gateway等各种应用。事实上Apache Axis在了1.0版后,其发行版本还包括了完整的J2EE服务器插件, WSDL支持和生成,TCP/IP监视器等组件,从这个意义上来说Apahce Axis已不仅仅是个SOAP框架了,它包含了除了UDDI外对整个Web Service协议栈 (Protocol Stack)的支持。 

对大多数关心Macromedia产品的人来说,Macromedia是Axis小组的核心成员之一,他们在几乎所有J2EE服务器端的产品线中包含了Axis,也就是说Macromedia对WebService的支持是通过Apache Axis实现的,这其中包括了 JRun, Flex, ColdFusion。即便是Flash Remoting,由于其核心还是SOAP,所以也是使用了Axis的SOAP框架。 
和.NET的WS不同,Axis是一个非常易于扩展的体系结构,其设计的核心思想是建立一个数据处理的管道,通过把handler编织成一条处理链从而无限扩展其可能性。打个比方,在输入部分开发人员既可以编写基于HTTP Basic Authentication的用户验证模块也可以插入 SOAP Auth模块用于验证请求,而输出部分既可以通过XML binding把结果输出为SOAP XML也可以象Flash Remoting那样把结果输出成binary格式。 

同时Axis也提供了所有的处理模块,使得用户能在最快的时间把服务器组件发布成WS.总的来说Axis有以下几个特点: 

速度 - Axis 使用 SAX 而不是 DOM 来处理XML请求,所以速度上有很大的改善。 
灵活性 - 刚才也提到了,Axis的体系结构是一个全开放式的处理器,所以扩展模块极为方便。面向组件的发布方式 - 处理链上可重复使用组件来完成类似的操作。 
Transport 框架 - Axis的核心和底层的transport完全分离,也就是说不管WS的Transport是HTTP, FTP, MAIL, MESSAGE QUEUE,只要插入对应的Transport模块即可,而不需改动其他部分。 
WSDL1.1支持 - 可自动由Java Object生成WSDL
 
摘要:
本文描述了如果创建一个简单Eclipse插件来实现Axis WebService客户端,包括4个步骤:
1 建立Eclipse插件,修改plugin.xml
2 建立调用Web Service类,该类实现调用Axis的WebService
3 修改Action类的run方法
4 调试
1 建立Eclipse插件

File->New->Project->Plug-in development的Plug-in project->Next,填写Project名,Next, 填写内容,Next,选择Create plug-in using one of the templates,选择Hello,World,Finish。

在视图可看到plugin.xml,在<Runtime>里加上运行调用Web Service所需jar包。内容如下:
 

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin
   id="colimas_plugin"
   name="Colimas_plugin Plug-in"
   version="1.0.0"
   provider-name="nova"
   class="colimas_plugin.Colimas_pluginPlugin">

   <runtime>
      <library name="colimas_plugin.jar">
         <export name="*"/>
      </library>
      <library name="lib/activation.jar">
         <export name="*"/>
      </library>
      <library name="lib/axis.jar">
         <export name="*"/>
      </library>
      <library name="lib/commons-beanutils.jar">
         <export name="*"/>
      </library>
      <library name="lib/commons-discovery-0.2.jar">
         <export name="*"/>
      </library>
      <library name="lib/commons-logging-1.0.4.jar">
         <export name="*"/>
      </library>
      <library name="lib/jaxrpc.jar">
         <export name="*"/>
      </library>
      <library name="lib/xalan.jar">
         <export name="*"/>
      </library>
      <library name="lib/xerces.jar">
         <export name="*"/>
      </library>
      <library name="lib/saaj.jar">
         <export name="*"/>
      </library>
      <library name="lib/mail.jar">
         <export name="*"/>
      </library>
   </runtime>

   <requires>
      <import plugin="org.eclipse.ui"/>
      <import plugin="org.eclipse.core.runtime"/>
   </requires>

   <extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            label="Sample Action Set"
            visible="true"
            id="colimas_plugin.actionSet">
         <menu
               label="Sample &amp;Menu"
               id="sampleMenu">
            <separator
                  name="sampleGroup">
            </separator>
         </menu>
         <action
               label="&amp;Sample Action"
               icon="icons/sample.gif"
               class="colimas_plugin.actions.SampleAction"
               tooltip="Hello, Eclipse world"
               menubarPath="sampleMenu/sampleGroup"
               toolbarPath="sampleGroup"
               id="colimas_plugin.actions.SampleAction">
         </action>
      </actionSet>
   </extension>

</plugin>



2 建立调用Web Service类,该类实现调用Axis的WebService

/*
* Created on 2005/07/30
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package com.nova.colimas.plugin.eclipse;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
import java.io.*;
/**
* @author tyrone
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class SendFileClient {

private Call call;
/**
  * The constructor.
  */
public SendFileClient() {
  try{
   Service  service= new Service();
   call    = (Call) service.createCall();
  }catch(Exception ex){
   System.out.println(ex.getMessage());
  }
}


public void saveFile(){
  try {
   String endpoint =
    "http://localhost:8080/axis/services/DocumentFileManagement";
   System.out.println("start web service");
   call.setTargetEndpointAddress( new java.net.URL(endpoint) );
   call.setOperationName(new QName("http://soapinterop.org/", "saveFile"));
   File fp=new File("D:\\MyProject\\colimas\\colimas_plugin\\lib\\mail.jar");
   BufferedInputStream in=new BufferedInputStream(new FileInputStream(fp));
   int len=in.available();
   byte[] contents=new byte[len];
   in.read(contents,0,len);
   System.out.println("begin run");

//开始调用Web Service:DocumentFileManagement的saveFile方法

   String ret = (String) call.invoke( new Object[] {fp.getName(),contents} );
   in.close();
  } catch (Exception e) {
   System.err.println("error"+e.toString());
  }
}

}



3 修改Action类的run方法

Action类的run方法里的内容是Eclipse插件真正要做到事

package colimas_plugin.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.jface.dialogs.MessageDialog;

import com.nova.colimas.plugin.eclipse.*;
/**
* Our sample action implements workbench action delegate.
* The action proxy will be created by the workbench and
* shown in the UI. When the user tries to use the action,
* this delegate will be created and execution will be
* delegated to it.
* @see IWorkbenchWindowActionDelegate
*/
public class SampleAction implements IWorkbenchWindowActionDelegate {
private IWorkbenchWindow window;
/**
  * The constructor.
  */
public SampleAction() {
}

/**
  * The action has been activated. The argument of the
  * method represents the 'real' action sitting
  * in the workbench UI.
  * @see IWorkbenchWindowActionDelegate#run
  */
public void run(IAction action) {
  SendFileClient client=new SendFileClient();
  client.saveFile();
  MessageDialog.openInformation(
    window.getShell(),
    "Colimas_plugin Plug-in",
    "Colimas Connected");
}

/**
  * Selection in the workbench has been changed. We
  * can change the state of the 'real' action here
  * if we want, but this can only happen after
  * the delegate has been created.
  * @see IWorkbenchWindowActionDelegate#selectionChanged
  */
public void selectionChanged(IAction action, ISelection selection) {
}

/**
  * We can use this method to dispose of any system
  * resources we previously allocated.
  * @see IWorkbenchWindowActionDelegate#dispose
  */
public void dispose() {
}

/**
  * We will cache window object in order to
  * be able to provide parent shell for the message dialog.
  * @see IWorkbenchWindowActionDelegate#init
  */
public void init(IWorkbenchWindow window) {
  this.window = window;
}
}


4 调试

首先启动Axis服务器,然后选择Eclipse的Run菜单的Run As -〉Run time workbench。

这样会启动另一个Eclipse workbench,在这个workbench里你会看到toolbar里新增了一个按钮,

点击按钮就会调用Webservice并返回控制台结果。