由于Axis支持自动序列化和反序列化JavaBean，实现了Java对象和XML SOAP消息映射，所以将Java的Map对象传递到.NET最简单的方法是实现一个JavaBean数组对象：

File 1:

public class MapEntryVO {
     private Object  key;
     private Object  value;

     public MapEntryVO() {
     }

     public MapEntryVO(Object key, Object value) {
       this.key   = key;
       this.value = value;
     }

     public Object getKey() {
       return key;
     }
     public void setKey(Object value) {
       key = value;
     }

     public Object getValue() {
       return value;
     }
     public void setValue(Object value) {
       this.value = value;
     }
   }
File 2:

import java.util.*; 

   public class WebServicesUtils {
     public static MapEntryVO[] convertMapToMapEntryVO(Map conv) {
       MapEntryVO[] result = new MapEntryVO[conv.size()];
       int i = 0;
       Iterator iter = conv.entrySet().iterator();

       while (iter.hasNext()) {
         Map.Entry item = (Map.Entry) iter.next();
         result[i++] = new MapEntryVO(item.getKey(),item.getValue());
       }

       return result;
     }
   }
File 3:

// Example WebService 
   public class TestService {
      public MapEntryVO[] testMethod() {
        java.util.Map value = new java.util.HashMap();

        value.put("Key 1","Value 1");
        value.put("Key 2","Value 2");

        return WebServicesUtils.convertMapToMapEntryVO(value);
      }
   }

代码完成后，记得在server-config.wsdd(或部署文件deploy.wsdd)中配置JavaBean的序列化，通知Axis你需要自动序列化的对象：

<typeMapping qname="java:MapEntryVOList"
         type="java:MapEntryVO[]"
         serializer="org.apache.axis.encoding.ser.ArraySerializerFactory"
         deserializer="org.apache.axis.encoding.ser.ArrayDeserializerFactory"
         encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />

  <typeMapping qname="java:MapEntryVO"
         type="java:MapEntryVO"
         serializer="org.apache.axis.encoding.ser.BeanSerializerFactory"
         deserializer="org.apache.axis.encoding.ser.BeanDeserializerFactory"
         encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />

参考：

http://wiki.apache.org/ws/FrontPage/Axis/DotNetInteropMapInfo