webservice 基于对象的传输

??????? 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,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>