一个服务返回一个ArrayList，如何使用Axis序列化/反序列化啊
我的代码如下：
这是发布到服务器上面的代码：
package   com;
import   java.util.*;
public   class   ArrayListService   {
public   ArrayList   myAL(){
ArrayList <String>   myAL   =   new   ArrayList <String> ();
String   str=new   String( "这是一个WebService   Of   ArrayList   ! ");
myAL.add(str);
return   myAL;
}}

客户端的代码：
package   com;
import   org.apache.axis.client.Call;
import   org.apache.axis.client.Service;
import   java.util.*;

public   class   ArrayListClient   {
public   static   void   main(String[]   args)   {    
try   {        
String   wsdlUrl   =   "http://127.0.0.1:8080/axis/services/ArrayListService?wsdl ";        
     
Service   service   =   new   Service();        
Call   call   =   null;        
call   =   (Call)   service.createCall();                

call.setOperationName( "myAL ");        
call.setTargetEndpointAddress(new   java.net.URL(wsdlUrl));          
//ArrayList   al=(ArrayList)call.invoke(new   Object[]   {});
call.invoke(new   Object[]   {});
System.out.println( "请求信息： ");
call.getMessageContext().getRequestMessage().writeTo(System.out);
System.out.println( " ");
System.out.println( "响应信息： ");
call.getMessageContext().getResponseMessage().writeTo(System.out);
System.out.println( " ");
}  
catch   (Exception   ex)   {         ex.printStackTrace();         }}}
打印出来的请求和响应消息也正常。
可是服务器返回的是一个ArrayList，当用这一句时“ArrayList   al=(ArrayList)call.invoke(new   Object[]   {});”就报错：
java.lang.ClassCastException:   [Ljava.lang.Object;
at   com.ArrayListClient.main(ArrayListClient.java:17)
这是什么原因啊，如何把响应消息里面的数据返回成ArrayList呢？

注：server-config.wsdd
<service   name= "ArrayListService "   provider= "java:RPC ">    
    <parameter   name= "className "   value= "com.ArrayListService "/>
    <parameter   name= "allowedMethods "   value= "* "/>
    <requestFlow>
    <handler   type= "loging "/>
    </requestFlow>
    <responseFlow>
    <handler   type= "loging "/>
    </responseFlow>
  </service>

这是服务响应消息：
<?xml   version= "1.0 "   encoding= "utf-8 "?>
<soapenv:Envelope   xmlns:soapenv= "http://schemas.xmlsoap.org/soap/envelope/ "                     xmlns:xsd= "http://www.w3.org/2001/XMLSchema "  
                  xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance ">
<soapenv:Body>
<myALResponse   soapenv:encodingStyle= "http://schemas.xmlsoap.org/soap/encoding/ ">
<myALReturn   href= "#id0 "/>
</myALResponse>