基于Axis的自定义对象序列化

　　作者的blog：http://www.matrix.org.cn/blog/liu2liu2/

由于最近公司采用Web Services技术做企业应用集成(EAI)相关的项目，有关技术人员反应采用Axis不能传递用户自定义对象。

错误信息大体如下：
AxisFault
faultCode: {http://schemas.XMLsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: Java.io.IOException: No serializer found for class com.whcyit.axis.SimpleObject in registry org.apache.axis.encoding.TypeMappingDelegate@da3a1e
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace:java.io.IOException: No serializer found for class com.whcyit.axis.SimpleObject in registry org.apache.axis.encoding.TypeMappingDelegate@da3a1e
at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1429)

对于Web Services的接触已经是4年多前的事情了，基本上对于Web Services只是存在一个概念了。抱着疑问，决定自己试一下到底怎么回事？
最后通过2个多小时的测试，终于把问题解决了。解决方式如下：

1. 在Axis服务端，注册自定义对象的序列化/反序列化器
主要是修改axis安装目录下WEB-INF/server-config.wsdd文件。

<service name="SimpleObjectService" provider="java:RPC">  <parameter name="allowedMethods" value="*"/>  <parameter name="className" value="com.whcyit.axis.SimpleObjectService"/>  <beanMapping languageSpecificType="java:com.whcyit.axis.SimpleObject" qname="ns:SimpleObject" xmlns:ns="urn:BeanService"/></service>

注意service/beanMapping的定义。languageSpecificType中定义使用那个类, qname定义类的名称。

2. 在Axis客户端，注册自定义对象的序列化/反序列化器。

核心代码如下：

//创建调用对象
Service service = new Service();
Call call = null;
call = (Call) service.createCall();
//注册SimpleObject的序列化类型
QName qn = new QName("urn:BeanService","SimpleObject");
call.registerTypeMapping(SimpleObject.class, qn,    new BeanSerializerFactory(SimpleObject.class, qn),    new BeanDeserializerFactory(SimpleObject.class, qn));

全部代码示例如下：

//SimpleObject.java

//Web Service对象传递的对象
package com.whcyit.axis;
import java.io.Serializable; 
public class SimpleObject implements Serializable {  
   /**    *     */   
 private static final long serialVersionUID = -6414428095965735488L;   
  private int i = 0;     
private float f = 0.0f;    
 private String str = "";        
public SimpleObject() {        }     
public float getFloat() {    return f;    }     
public void setFloat(float f) {    this.f = f;    }     
public int getInt() {    return i;    }    
 public void setInt(int i) {    this.i = i;    }     
public String getString() {    return str;    }    
 public void setString(String str) {    this.str = str;    }}

// SimpleObjectService.java

//服务程序

package com.whcyit.axis;
public class SimpleObjectService {   
public String sayHello(String name) {    
return "Hello " + name +"!";    }        
public String getString(SimpleObject obj) {    
System.out.println("SimpleObjectService getString invoked!");    return "return by serviced:"+obj.getString();    }        
public SimpleObject createSimpleObject(int i,float f,String str) {    System.out.println("SimpleObjectService createSimpleObject invoked!");    
SimpleObject so = new SimpleObject();    
so.setInt(i);    
so.setFloat(f);    
so.setString(str);    
return so;        } }

// SimpleObjectClient.java
//客户端调用文件

package com.whcyit.axis; 
import javax.xml.namespace.QName; 
import org.apache.axis.client.Call;import org.apache.axis.client.Service;import org.apache.axis.encoding.ser.BeanDeserializerFactory;
import org.apache.axis.encoding.ser.BeanSerializerFactory; 
public class SimpleObjectClient {     /**    * @param args    */    
public static void main(String[] args) {    
String ret = "";    
try {    String wsdlUrl = "http://localhost:8080/axis/services/SimpleObjectService?wsdl";    String nameSpaceUri = "http://localhost:8080/axis/services/SimpleObjectService";    
//String wsdlUrl = "http://10.68.19.24:8080/sample/services/SimpleObjectService?wsdl";    
//String nameSpaceUri = "http://10.68.19.24:8080/sample/services/SimpleObjectService";     

//创建调用对象    
Service service = new Service();    
Call call = null;    
call = (Call) service.createCall();       

 //注册SimpleObject的序列化类型    
QName qn = new QName("urn:BeanService","SimpleObject");    call.registerTypeMapping(SimpleObject.class, qn,    new BeanSerializerFactory(SimpleObject.class, qn),    new BeanDeserializerFactory(SimpleObject.class, qn));     

//调用sayHello    
System.out.println(">>>sayHello");    
call.setOperationName(new QName(nameSpaceUri, "sayHello"));    call.setTargetEndpointAddress(new java.net.URL(wsdlUrl));     
ret = (String) call.invoke(new Object[] { "liu2" });    
System.out.println("return value is " + ret);        

//调用getDesc    
System.out.println(">>>getString");    
SimpleObject so = new SimpleObject();    
so.setString("hello!");    
QName getDescQn = new QName(nameSpaceUri, "getString");     call.setOperationName(getDescQn);    
call.setTargetEndpointAddress(new java.net.URL(wsdlUrl));    
ret = (String) call.invoke(new Object[] { so });    
System.out.println("return value is " + ret);        

//调用createSimpleObject    
System.out.println(">>>createSimpleObject");    QName getObjectQn = new QName(nameSpaceUri, "createSimpleObject");     
call.setOperationName(getObjectQn);    
call.setTargetEndpointAddress(new java.net.URL(wsdlUrl));    SimpleObject rtnSO = (SimpleObject) call.invoke(new Object[] { new Integer(1),new Float(0.1f),"liu2" });    
System.out.println("return object " + rtnSO.getString());     
} catch (Exception ex) {    ex.printStackTrace();    }    } }

//server-config.wsdd
//服务端配置文件

<?xml version="1.0" encoding="UTF-8"?>
<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"> <globalConfiguration>  <parameter name="adminPassWord" value="admin"/>  <parameter name="attachments.Directory" value="C:\eclipse\workspace\bookstore\WEB-INF\attachments"/>  <parameter name="attachments.implementation" value="org.apache.axis.attachments.AttachmentsImpl"/>  <parameter name="sendXsiTypes" value="true"/>  <parameter name="sendMultiRefs" value="true"/>  <parameter name="sendXMLDeclaration" value="true"/>  <parameter name="axis.sendMinimizedElements" value="true"/>  <requestFlow>   <handler type="java:org.apache.axis.handlers.JWSHandler">    <parameter name="scope" value="session"/>   </handler>   <handler type="java:org.apache.axis.handlers.JWSHandler">    <parameter name="scope" value="request"/>    <parameter name="extension" value=".jwr"/>   </handler>  </requestFlow> </globalConfiguration> <handler name="LocalResponder" type="java:org.apache.axis.transport.local.LocalResponder"/> <handler name="Authenticate" type="java:org.apache.axis.handlers.SimpleAuthenticationHandler"/> <handler name="URLMapper" type="java:org.apache.axis.handlers.http.URLMapper"/> <service name="Version" provider="java:RPC">  <parameter name="allowedMethods" value="getVersion"/>  <parameter name="className" value="org.apache.axis.Version"/> </service> <service name="SimpleObjectService" provider="java:RPC">  <parameter name="allowedMethods" value="*"/>  <parameter name="className" value="com.whcyit.axis.SimpleObjectService"/>  <beanMapping languageSpecificType="java:com.whcyit.axis.SimpleObject" qname="ns:SimpleObject" xmlns:ns="urn:BeanService"/> </service> <service name="AdminService" provider="java:MSG">  <parameter name="allowedMethods" value="AdminService"/>  <parameter name="enableRemoteAdmin" value="false"/>  <parameter name="className" value="org.apache.axis.utils.Admin"/>  <namespace>http://xml.apache.org/axis/wsdd/</namespace> </service> <transport name="local">  <responseFlow>   <handler type="LocalResponder"/>  </responseFlow> </transport> <transport name="http">  <requestFlow>   <handler type="URLMapper"/>   <handler type="java:org.apache.axis.handlers.http.HTTPAuthHandler"/>  </requestFlow> </transport></deployment>

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