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详解Axis2实现Web Services之ADB篇

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  • J2EE
WebSOAP框架ApacheEclipse 
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构建一个新的Web Services服务，会有很多种不同的方法，你即可以用pojo结合rpc模式来写，也可以用axis2自己的axiom api从底层写，也可以从wsdl生成相应框架，然后填写相应逻辑。

对于wsdl生成框架代码这种形式，又有不同的数据绑定可以使用。axis2 1.1 可以使用adb(axis2自己的data binding)、xmlbeans、jibx、jaxme、jaxbri。其中常用的还是前两种，axis2官方是极力推荐自己的data binding的，因为速度快，架构相对简单，而且有一些独有的特性。xmlbeans，是对模式支持最好的data binding，一些特别复杂的模式只能在xmlbeans下才能正确生成框架代码。其他几种代码wsdl2java目前都不是支持得很好，都还在实验改进阶段。

面对这么多数据绑定模式，很多人都无从选择。官方maillist上也有好多人问该用哪个。查了一些资料，据说，adb很好用，而且速度快，如果只是简单的模式，那么使用这种数据绑定就可以了。xmlbeans的强力模式支持，可以支持足够负责的模式，但是速度上也只是比adb低5%左右。

axis2的wsdl2java工具对于adb以及xmlbeans支持都已经很好了，可以直接从wsdl2java生成相应的绑定类

Axis2 还提供自己的简单数据绑定框架，称为 Axis2 Data Binding (ADB)。这就允许用户下载 Axis2 并使用它，而不用太多考虑数据绑定框架。由于 ADB 和 Axis2 内部元素之间实现了紧密的集成，可以预见，与其他框架相比，此框架的性能和生成代码维护方面都更具优势。
 
为了充分利用资源，我们用上一个有关AXIOM专题的例子中生成的WSDL文件来为这个例子服务

1.生成ADB服务框架。使用的ＷＳＤＬ文件如下：

xml 代码

 

  1. <wsdl:definitions xmlns:axis2="http://service.util.danlley.org" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"  
  2. xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"  
  3. xmlns:ns="http://service.util.danlley.org/xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"  
  4.  targetNamespace="http://service.util.danlley.org">  
  5.  <wsdl:types>  
  6.   <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="qualified" elementFormDefault="qualified"  
  7.    targetNamespace="http://service.util.danlley.org/xsd">  
  8.    <xs:element name="getHelloMessageFault">  
  9.     <xs:complexType>  
  10.      <xs:sequence>  
  11.       <xs:element name="getHelloMessageFault" type="xs:anyType" />  
  12.      xs:sequence>  
  13.     xs:complexType>  
  14.    xs:element>  
  15.    <xs:element name="getHelloMessage">  
  16.     <xs:complexType>  
  17.      <xs:sequence>  
  18.       <xs:element name="element" nillable="true" type="xs:anyType" />  
  19.      xs:sequence>  
  20.     xs:complexType>  
  21.    xs:element>  
  22.    <xs:element name="getHelloMessageResponse">  
  23.     <xs:complexType>  
  24.      <xs:sequence>  
  25.       <xs:element name="return" nillable="true" type="xs:anyType" />  
  26.      xs:sequence>  
  27.     xs:complexType>  
  28.    xs:element>  
  29.    <xs:element name="getMoreMessageFault">  
  30.     <xs:complexType>  
  31.      <xs:sequence>  
  32.       <xs:element name="getMoreMessageFault" type="xs:anyType" />  
  33.      xs:sequence>  
  34.     xs:complexType>  
  35.    xs:element>  
  36.    <xs:element name="getMoreMessage">  
  37.     <xs:complexType>  
  38.      <xs:sequence>  
  39.       <xs:element name="element" nillable="true" type="xs:anyType" />  
  40.      xs:sequence>  
  41.     xs:complexType>  
  42.    xs:element>  
  43.    <xs:element name="getMoreMessageResponse">  
  44.     <xs:complexType>  
  45.      <xs:sequence>  
  46.       <xs:element name="return" nillable="true" type="xs:anyType" />  
  47.      xs:sequence>  
  48.     xs:complexType>  
  49.    xs:element>  
  50.   xs:schema>  
  51.  wsdl:types>  
  52.  <wsdl:message name="getHelloMessageMessage">  
  53.   <wsdl:part name="part1" element="ns:getHelloMessage" />  
  54.  wsdl:message>  
  55.  <wsdl:message name="getHelloMessageResponseMessage">  
  56.   <wsdl:part name="part1" element="ns:getHelloMessageResponse" />  
  57.  wsdl:message>  
  58.  <wsdl:message name="getHelloMessageFault">  
  59.   <wsdl:part name="part1" element="ns:getHelloMessageFault" />  
  60.  wsdl:message>  
  61.  <wsdl:message name="getMoreMessageMessage">  
  62.   <wsdl:part name="part1" element="ns:getMoreMessage" />  
  63.  wsdl:message>  
  64.  <wsdl:message name="getMoreMessageResponseMessage">  
  65.   <wsdl:part name="part1" element="ns:getMoreMessageResponse" />  
  66.  wsdl:message>  
  67.  <wsdl:message name="getMoreMessageFault">  
  68.   <wsdl:part name="part1" element="ns:getMoreMessageFault" />  
  69.  wsdl:message>  
  70.  <wsdl:portType name="HelloWorldAxiomPortType">  
  71.   <wsdl:operation name="getHelloMessage">  
  72.    <wsdl:input message="axis2:getHelloMessageMessage" />  
  73.    <wsdl:output message="axis2:getHelloMessageResponseMessage" />  
  74.    <wsdl:fault message="axis2:getHelloMessageFault" name="getHelloMessageFault" />  
  75.   wsdl:operation>  
  76.   <wsdl:operation name="getMoreMessage">  
  77.    <wsdl:input message="axis2:getMoreMessageMessage" />  
  78.    <wsdl:output message="axis2:getMoreMessageResponseMessage" />  
  79.    <wsdl:fault message="axis2:getMoreMessageFault" name="getMoreMessageFault" />  
  80.   wsdl:operation>  
  81.  wsdl:portType>  
  82.  <wsdl:binding name="HelloWorldAxiomSOAP11Binding" type="axis2:HelloWorldAxiomPortType">  
  83.   <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />  
  84.   <wsdl:operation name="getHelloMessage">  
  85.    <soap:operation soapAction="urn:getHelloMessage" style="document" />  
  86.    <wsdl:input>  
  87.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  88.    wsdl:input>  
  89.    <wsdl:output>  
  90.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  91.    wsdl:output>  
  92.    <wsdl:fault name="getHelloMessageFault">  
  93.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  94.    wsdl:fault>  
  95.   wsdl:operation>  
  96.   <wsdl:operation name="getMoreMessage">  
  97.    <soap:operation soapAction="urn:getMoreMessage" style="document" />  
  98.    <wsdl:input>  
  99.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  100.    wsdl:input>  
  101.    <wsdl:output>  
  102.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  103.    wsdl:output>  
  104.    <wsdl:fault name="getMoreMessageFault">  
  105.     <soap:body use="literal" namespace="http://service.util.danlley.org" />  
  106.    wsdl:fault>  
  107.   wsdl:operation>  
  108.  wsdl:binding>  
  109.  <wsdl:binding name="HelloWorldAxiomSOAP12Binding" type="axis2:HelloWorldAxiomPortType">  
  110.   <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />  
  111.   <wsdl:operation name="getHelloMessage">  
  112.    <soap12:operation soapAction="urn:getHelloMessage" style="document" />  
  113.    <wsdl:input>  
  114.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  115.    wsdl:input>  
  116.    <wsdl:output>  
  117.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  118.    wsdl:output>  
  119.    <wsdl:fault name="getHelloMessageFault">  
  120.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  121.    wsdl:fault>  
  122.   wsdl:operation>  
  123.   <wsdl:operation name="getMoreMessage">  
  124.    <soap12:operation soapAction="urn:getMoreMessage" style="document" />  
  125.    <wsdl:input>  
  126.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  127.    wsdl:input>  
  128.    <wsdl:output>  
  129.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  130.    wsdl:output>  
  131.    <wsdl:fault name="getMoreMessageFault">  
  132.     <soap12:body use="literal" namespace="http://service.util.danlley.org" />  
  133.    wsdl:fault>  
  134.   wsdl:operation>  
  135.  wsdl:binding>  
  136.  <wsdl:service name="HelloWorldAxiom">  
  137.   <wsdl:port name="HelloWorldAxiomSOAP11port" binding="axis2:HelloWorldAxiomSOAP11Binding">  
  138.    <soap:address location="http://localhost:8080/axis2/services/HelloWorldAxiom" />  
  139.   wsdl:port>  
  140.   <wsdl:port name="HelloWorldAxiomSOAP12port" binding="axis2:HelloWorldAxiomSOAP12Binding">  
  141.    <soap12:address location="http://localhost:8080/axis2/services/HelloWorldAxiom" />  
  142.   wsdl:port>  
  143.  wsdl:service>  
  144. wsdl:definitions>  


 
 
 
2.生成工程框架

运行命令如下：WSDL2Java -uri resources/META-INF/HelloWorldAxiom.wsdl -p org.danlley.service.adb -d adb -s -ss -sd -ssi -o build/service
如果得到以下结果则说明执行成功：

--------------------------------------------------------------------------------

D:\eclipse\workspace\axis2adblab>WSDL2Java -uri resources/META-INF/HelloWorldAxi
om.wsdl -p org.danlley.service.adb -d adb -s -ss -sd -ssi -o build/service
Using AXIS2_HOME:   D:\axis2-1.1.1
Using JAVA_HOME:    C:\Program Files\Java\jdk1.5.0_06
D:\eclipse\workspace\axis2adblab>

--------------------------------------------------------------------------------

 
 

执行成功后在工程中出现的路径如下：

--------------------------------------------------------------------------------

./build/service/build.xml

./build/service/resources/HelloWorldAxiom.wsdl
                                             services.xml

./build/service/src/org/danlley/service/adb/GetHelloMessageFaultException.java
                                                                           GetMoreMessageFaultException.java
                                                                           HelloWorldAxiomMessageReceiverInOut.java
                                                                           HelloWorldAxiomSkeleton.java
                                                                           HelloWorldAxiomSkeletonInterface.java

./build/service/src/org/danlley/util/service/xsd/ExtensionMapper.java
                                                                                 GetHelloMessage.java
                                                                                 GetHelloMessageFault.java
                                                                                 GetHelloMessageResponse.java
                                                                                 GetMoreMessage.java
                                                                                 GetMoreMessageFault.java
                                                                                 GetMoreMessageResponse.java

--------------------------------------------------------------------------------

 
 
 
 
 
3.分析框架结构
 
Ａｘｉｓ·２的服务确实够周到的，不仅仅给我们把整个服务的框架都搭建好了，而且，还给我们顺便连编译工程所需用的Ａｎｔ脚本都生成好了。真是不得不让人感叹一句"Apache办事，我放心！"呵呵呵。

让我们先大体看看生成的这些Ｊａｖａ代码的作用，GetHelloMessageFaultException和GetMoreMessageFaultException是用来做异常处理的。关于这个话题我以纪在以前的专题中已经有过提及（也就是跟Fault相关的话题）。

说到Fault就不得不再提提SOAP 处理模型，Axis2 体系结构定义了两个管道（或流），分别称为 InPipe (InFlow) 和 OutPipe (OutFlow)，用于处理服务器端的请求消息和响应消息。在客户端，这两个管道是反向的——换句话说，SOAP 请求消息流经 OutPipe，而响应消息流经 InPipe。管道或流包含一系列分为阶段的处理程序。除预先定义的阶段和处理程序集外，用户还可以在操作级别、服务级别或全局级别配置用户阶段和相关处理程序。处理程序充当 SOAP 消息的拦截器，可以处理 SOAP 消息的 Header 或 Body。InPipe 是通过以下阶段进行配置的：

--------------------------------------------------------------------------------

TransportIn
PreDispatch
Dispatch
PostDispatch
PolicyDetermination
User phases
Message validation

--------------------------------------------------------------------------------

 
 
 
请求消息在通过 Inpipe 中配置的所有阶段后，到达 MessageReceiver，然后由 MessageReceiver 调用实际服务实现。服务器的 OutPipe 包含以下阶段：

--------------------------------------------------------------------------------

Message initialization
Policy determination
User phases
MessageOut

--------------------------------------------------------------------------------


用户配置的阶段位于这两个管道的用户阶段(User phases) 部分。如果在执行这些管道的过程中发生错误，则这些错误将通过 InFaultPipe 或 OutFaultPipe 管道。收到 Fault 消息后，在客户端调用 InFaultPipe；如果某个调用导致将错误发送到客户端，则在服务器端调用 OutFaultPipe。用户可以将处理程序添加到预先定义的阶段，并且按照这些处理程序运行的顺序进行配置。

那么既然ADB pattern为我们提供了GetHelloMessageFaultException、GetMoreMessageFaultException、GetHelloMessageFault和GetMoreMessageFault类。那也就意味着我们可以对这些类进行扩充，以满足我们在实际当中的应用需求。由于我们Axiom的专题中举例时，两个实例均采用了in-Out模式，因此通过此工程的WSDL生成的ADB框架也就只有HelloWorldAxiomMessageReceiverInOut类来处理In-Out模式。GetHelloMessage和GetMoreMessage用来对接口HelloWorldAxiomSkeletonInterface的收取的数据进行封装，而GetHelloMessageResponse和GetMoreMessageResponse类则用于封装由HelloWorldAxiomSkeleton类处理后的结果。也就是说，真正的服务提供者就是HelloWorldAxiomSkeleton类。现在思路已经整理清楚，ADB生成的框架也基本上相当清楚了。那么剩下就是为我们新生成的框架动点小外科手术的时候了。
 
 
 
 
 
 
4.构建工程

根据我个人喜好，我的工程目录结构整理后如下：

--------------------------------------------------------------------------------

./build.xml

./resources/HelloWorldAxiom.wsdl
                     services.xml

./src/main/java/org/danlley/service/adb/GetHelloMessageFaultException.java
                                                                       GetMoreMessageFaultException.java
                                                                       HelloWorldAxiomMessageReceiverInOut.java
                                                                       HelloWorldAxiomSkeleton.java
                                                                       HelloWorldAxiomSkeletonInterface.java

./src/main/java/org/danlley/util/service/xsd/ExtensionMapper.java
                                                                             GetHelloMessage.java
                                                                             GetHelloMessageFault.java
                                                                             GetHelloMessageResponse.java
                                                                             GetMoreMessage.java
                                                                             GetMoreMessageFault.java
                                                                             GetMoreMessageResponse.java

--------------------------------------------------------------------------------

 

工程目录改变也就意味着我们需要修改Ａｎｔ脚本，修改后的脚步如下：

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| 详解Axis2实现Web Services之AXIOM篇
评论
4 楼 duzhijun1983 2008-06-12  
兄弟，你的代码顺序贴错了。
3 楼 danlley 2007-07-24   
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:axis2="http://service.util.danlley.org"
 xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
 xmlns:ns="http://service.util.danlley.org/xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl"
 xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" attributeFormDefault="qualified" elementFormDefault="qualified"
 targetNamespace="http://service.util.danlley.org/xsd">
 <xs:element name="getHelloMessageFault">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="getHelloMessageFault" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
 <xs:element name="getHelloMessage">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="element" nillable="true" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
 <xs:element name="getHelloMessageResponse">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="return" nillable="true" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
 <xs:element name="getMoreMessageFault">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="getMoreMessageFault" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
 <xs:element name="getMoreMessage">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="element" nillable="true" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
 <xs:element name="getMoreMessageResponse">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="return" nillable="true" type="xs:anyType" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
</xs:schema>


这个是编写客户端必不可少的一个信息了。





6.生成客户端框架。

执行以下命令：

--------------------------------------------------------------------------------

WSDL2Java -uri resources/META-INF/HelloWorldAxiom.wsdl -p org.danlley.testcase.client -d adb -s -o build/client

--------------------------------------------------------------------------------


得到以下结果，那么说明客户端运行框架已经生成

--------------------------------------------------------------------------------

D:\eclipse\workspace\axis2adblab>WSDL2Java -uri resources/META-INF/HelloWorldAxi
om.wsdl -p org.danlley.testcase.client -d adb -s -o build/client
Using AXIS2_HOME:   D:\axis2-1.1.1
Using JAVA_HOME:    C:\Program Files\Java\jdk1.5.0_06
D:\eclipse\workspace\axis2adblab>

--------------------------------------------------------------------------------

根据我们的定义，该客户端框架在build/client目录下。将生成的客户端支持框架整理到我们的客户端程序存放路径下：src/test/java
目录结构如下：

--------------------------------------------------------------------------------
./src/test/java/org/danlley/testcase/client/GetHelloMessageFaultException.java
                                                                        GetMoreMessageFaultException.java
                                                                        HelloWorldAxiomStub.java

--------------------------------------------------------------------------------


在此目录下定义一个 ADBClient.java，也就是我们Ｗｅｂ　Ｓｅｒｖｉｃｅｓ客户端。
实现ADBClient类（这里我们只实现了对getHelloMessage的处理）： 
package org.danlley.testcase.client;
import java.io.StringWriter;
import java.rmi.RemoteException;
import javax.xml.stream.XMLOutputFactory;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
import org.danlley.util.service.xsd.GetHelloMessage;
import org.danlley.util.service.xsd.GetHelloMessageResponse;
public class ADBClient{
    private static EndpointReference targetEPR=new EndpointReference("http://localhost:8080/axis2/services/HelloWorldAxiom");
    public static void main(String[] args){
        try{
            getHelloMessage("Hi, Danlley !");
            System.out.println("END<-----------------");
        }catch(Exception e){
            e.printStackTrace();
        }
    }
    public static void getHelloMessage(String msg){
        try{
            HelloWorldAxiomStub stub=new HelloWorldAxiomStub("http://localhost:8080/axis2/services/HelloWorldAxiom");
            HelloWorldAxiomStub.GetHelloMessage helloMsg=new HelloWorldAxiomStub.GetHelloMessage();
            OMElement element=getOMElement(msg);
            helloMsg.setElement(element);
            System.out.println(helloMsg.getElement().toString());
            HelloWorldAxiomStub.GetHelloMessageResponse helloResponse;
            helloResponse=stub.getHelloMessage(helloMsg);
            OMElement return_val=helloResponse.get_return();
            System.out.println(return_val);
        }catch(AxisFault e){
            e.printStackTrace();
        }catch(RemoteException e){
            e.printStackTrace();
        }catch(GetHelloMessageFaultException e){
            e.printStackTrace();
        }
    }
    public static OMElement getOMElement(String msg){
        OMFactory fac=OMAbstractFactory.getOMFactory();
        OMNamespace omNs=fac.createOMNamespace("http://service.util.danlley.org/xsd","ns1");
        OMElement method=fac.createOMElement("getHelloMessage",omNs);
        OMElement value=fac.createOMElement("msg",omNs);
        value.addChild(fac.createOMText(value,msg));
        method.addChild(value);
        return method;
    }
}



运行客户端程序：

--------------------------------------------------------------------------------
<ns1:getHelloMessage xmlns:ns1="http://service.util.danlley.org/xsd"><ns1:msg>Hi, Danlley !</ns1:msg></ns1:getHelloMessage>
<ns:getHelloMessageResponse xmlns:ns="http://service.util.danlley.org/xsd"><ns:return>You are Perfect, Danlley!</ns:return></ns:getHelloMessageResponse>
END<-----------------

--------------------------------------------------------------------------------

那么一个基于ADB pattern的Web Services就实现了。








注：此文档在8月之前将一直处于维护状态


参考资料
http://ws.apache.org/axis2/1_2/index.html
http://blog.mllm.org/node/171
http://www-128.ibm.com/developerworks/cn/webservices/ws-webaxis1/#figure1
2 楼 danlley 2007-07-24  
打开HelloWorldAxiomSkeleton类： 
package org.danlley.service.adb;
import org.danlley.util.service.xsd.GetHelloMessage;
import org.danlley.util.service.xsd.GetHelloMessageResponse;
import org.danlley.util.service.xsd.GetMoreMessage;
import org.danlley.util.service.xsd.GetMoreMessageResponse;
public class HelloWorldAxiomSkeleton implements HelloWorldAxiomSkeletonInterface{
    public GetMoreMessageResponse getMoreMessage(GetMoreMessage param4) throws GetMoreMessageFaultException{
        //Todo fill this with the necessary business logic
        throw new UnsupportedOperationException("Please implement "+this.getClass().getName()+"#getMoreMessage");
    }
    public GetHelloMessageResponse getHelloMessage(GetHelloMessage param6) throws GetHelloMessageFaultException{
        //Todo fill this with the necessary business logic
        throw new UnsupportedOperationException("Please implement "+this.getClass().getName()+"#getHelloMessage");
    }
}




实现HelloWorldAxiomSkeleton类： 
package org.danlley.service.adb;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.danlley.util.service.xsd.GetHelloMessage;
import org.danlley.util.service.xsd.GetHelloMessageResponse;
import org.danlley.util.service.xsd.GetMoreMessage;
import org.danlley.util.service.xsd.GetMoreMessageResponse;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentFactory;
import org.dom4j.DocumentHelper;
public class HelloWorldAxiomSkeleton implements HelloWorldAxiomSkeletonInterface{
    public GetMoreMessageResponse getMoreMessage(GetMoreMessage param4) throws GetMoreMessageFaultException{
        try{
            OMElement element=param4.getElement();
            element.build();
            element.detach();
            DocumentFactory dom=new DocumentFactory();
            dom.createDocument(element.toString());
            System.out.println(element.toString());
            Document doc=DocumentHelper.parseText(element.toString());
            String msg=doc.selectSingleNode("//tns:msg").getText();
            String userPWD=doc.selectSingleNode("//tns:userPWD").getText();
            String transactionKey=doc.selectSingleNode("//tns:transactionKey").getText();
            System.out.println("\n msg="+msg+"\n userPWD="+userPWD+"\n transactionKey="+transactionKey);
            OMFactory fac=OMAbstractFactory.getOMFactory();
            OMNamespace omNs=fac.createOMNamespace("http://service.util.danlley.org/xsd","ns");
            OMElement method=fac.createOMElement("getHelloMessageResponse",omNs);
            OMElement value=fac.createOMElement("return",omNs);
            String returnText="MultiMessage for U, Danlley!";
            returnText=returnText+"\n msg="+msg+"\t userPWD="+userPWD+"\t transactionKey="+transactionKey;
            value.addChild(fac.createOMText(value,returnText));
            method.addChild(value);
            GetMoreMessageResponse response=new GetMoreMessageResponse();
            response.set_return(method);
            return response;
        }catch(OMException e){
            e.printStackTrace();
            return null;
        }catch(DocumentException e){
            e.printStackTrace();
            return null;
        }
    }
    public GetHelloMessageResponse getHelloMessage(GetHelloMessage param6) throws GetHelloMessageFaultException{
        OMElement element=param6.getElement();
        element.build();
        element.detach();
        OMElement symbolElement=element.getFirstElement();
        String helloworld=symbolElement.getText();
        System.out.println("We got the messages :"+(helloworld!=null?helloworld:"No Msg!"));
        String returnText="You are Perfect, Danlley!";
        OMFactory fac=OMAbstractFactory.getOMFactory();
        OMNamespace omNs=fac.createOMNamespace("http://service.util.danlley.org/xsd","ns");
        OMElement method=fac.createOMElement("getHelloMessageResponse",omNs);
        OMElement value=fac.createOMElement("return",omNs);
        value.addChild(fac.createOMText(value,returnText));
        method.addChild(value);
        GetHelloMessageResponse response=new GetHelloMessageResponse();
        response.set_return(method);
        return response;
    }
}



5.发布、部署

执行ａｎｔ脚本声称aar包。部署aar到tomcat目录下，在浏览器中访问：http://localhost:8080/axis2/services/HelloWorldAxiom?wsdl
就可以看到我们生成的新的ＷＳＤＬ。由于WSDL 文件过于繁冗，让我们看看XSD文件就已经足够了，访问地址：http://localhost:8080/axis2/services/HelloWorldAxiom?xsd　可以看到如下内容：
1 楼 danlley 2007-07-24   
<project basedir="." default="jar.server">
 <!--Auto generated ant build file-->
 <property environment="env" />
 <property name="axis2.home" value="${env.AXIS2_HOME}" />
 <property name="project.base.dir" value="." />
 <property name="maven.class.path" value="" />
 <property name="name" value="HelloWorldAxiom" />
 <property name="src" value="${project.base.dir}/src/main/java" />
 <property name="test" value="${project.base.dir}/src/test/java" />
 <property name="build" value="${project.base.dir}/build" />
 <property name="classes" value="${build}/classes" />
 <property name="lib" value="${build}/lib" />
 <property name="resources" value="${project.base.dir}/resources" />
 <property value="" name="jars.ok" />
 <path id="axis2.class.path">
  <pathelement path="${java.class.path}" />
  <pathelement path="${maven.class.path}" />
  <fileset dir="${axis2.home}">
   <include name="lib/*.jar" />
  </fileset>
 </path>
 <target name="init">
  <mkdir dir="${build}" />
  <mkdir dir="${classes}" />
  <mkdir dir="${lib}" />
  <mkdir dir="${test}" />
 </target>
 <target depends="init" name="pre.compile.test">
  <!--Test the classpath for the availability of necesary classes-->
  <available classpathref="axis2.class.path" property="stax.available" classname="javax.xml.stream.XMLStreamReader" />
  <available classpathref="axis2.class.path" property="axis2.available" classname="org.apache.axis2.engine.AxisEngine" />
  <condition property="jars.ok">
   <and>
    <isset property="stax.available" />
    <isset property="axis2.available" />
   </and>
  </condition>
  <!--Print out the availabilities-->
  <echo message="Stax Availability= ${stax.available}" />
  <echo message="Axis2 Availability= ${axis2.available}" />
 </target>
 <target depends="pre.compile.test" name="compile.src" if="jars.ok">
  <javac debug="on" memoryMaximumSize="256m" memoryInitialSize="256m" fork="true" destdir="${classes}" srcdir="${src}">
   <classpath refid="axis2.class.path" />
  </javac>
 </target>
 <target depends="compile.src" name="compile.test" if="jars.ok">
  <javac debug="on" memoryMaximumSize="256m" memoryInitialSize="256m" fork="true" destdir="${classes}">
   <src path="${test}" />
   <classpath refid="axis2.class.path" />
  </javac>
 </target>
 <target depends="pre.compile.test" name="echo.classpath.problem" unless="jars.ok">
  <echo message="The class path is not set right!                                Please make sure the following classes are in the classpath                                1. XmlBeans                                2. Stax                                3. Axis2                 " />
 </target>
 <target depends="jar.server, jar.client" name="jar.all" />
 <target depends="compile.src,echo.classpath.problem" name="jar.server" if="jars.ok">
  <copy toDir="${classes}/META-INF" failonerror="false">
   <fileset dir="${resources}">
    <include name="*.xml" />
    <include name="*.wsdl" />
    <include name="*.xsd" />
   </fileset>
  </copy>
  <jar destfile="${lib}/${name}.aar">
   <fileset excludes="**/Test.class" dir="${classes}" />
  </jar>
 </target>
 <target if="jars.ok" name="jar.client" depends="compile.test">
  <jar destfile="${lib}/${name}-test-client.jar">
   <fileset dir="${classes}">
    <exclude name="**/META-INF/*.*" />
    <exclude name="**/lib/*.*" />
    <exclude name="**/*MessageReceiver.class" />
    <exclude name="**/*Skeleton.class" />
   </fileset>
  </jar>
 </target>
 <target if="jars.ok" name="make.repo" depends="jar.server">
  <mkdir dir="${build}/repo/" />
  <mkdir dir="${build}/repo/services" />
  <copy file="${build}/lib/${name}.aar" toDir="${build}/repo/services/" />
 </target>
 <target if="jars.ok" name="start.server" depends="make.repo">
  <java fork="true" classname="org.apache.axis2.transport.http.SimpleHTTPServer">
   <arg value="${build}/repo" />
   <classpath refid="axis2.class.path" />
  </java>
 </target>
 <target depends="compile.test" name="run.test" if="jars.ok">
  <path id="test.class.path">
   <pathelement location="${lib}/${name}-test-client.jar" />
   <path refid="axis2.class.path" />
  </path>
  <mkdir dir="${build}/test-reports/" />
  <junit haltonfailure="yes" printsummary="yes">
   <classpath refid="test.class.path" />
   <formatter type="plain" />
   <batchtest fork="yes" toDir="${build}/test-reports/">
    <fileset dir="${test}">
     <include name="**/*Test*.java" />
    </fileset>
   </batchtest>
  </junit>
 </target>
 <target name="clean">
  <delete dir="${build}" />
 </target>
</project>
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