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只需3步把您的Java程序转换为Web服务

我原来的系统是CICS的,对后台封装了一层,现在用Webservice再封装一层,前台页面,控制,数据传输,数据处理统统都可以分开了
发布时间:2005-11-18 17:11        来源:        作者:Jackie
1、选择要转换的Java文件,生成class 2、写wsdd 3、发布 剩下的就只有调用了wsdl2Java 我原来的系统是CICS的,对后台封装了一层,现在用webservice再封装一层,前台页面,控制,数据传输,数据处理统统都可以分开了。 一、Axis安装 1、环境 J2SE SDK 1.3 or 1.4: 我使用 1.4.2 Servlet Container: 我使用的Tomcat 5.0 二、到 http://ws.apache.org/Axis/网站下载Axis安装包 三、解压缩安装包,将Axis_UNZIP_PATH\Axis-version\webapps下的Axis包拷贝到TOM CAT_HOME\webapps\下,以下约定Axis_HOME为该TOMCAT_HOME\webapps\Axis目录 四、启动tomcat,访问http://localhost:8080/Axis 检查安装是否成功 五、以上步骤执行成功,可以开发webservice例子了 Axis支持三种web service的部署和开发,分别为: 1、Dynamic Invocation Interface ( DII) 2、Stubs方式 3、Dynamic Proxy方式 二、编写DII(Dynamic Invocation Interface )方式web服务 1.编写服务端程序HelloClient
public class HelloClient
{
    public String getName(String name)
    {
        return "hello "+name;
    }
}
2、将源码拷贝到Axis_HOME下,重命名为 HelloClient.jws 3、访问连接http://localhost:8080/Axis/HelloClient.jws wsdl,页面显示Axis自 动生成的wsdl 4、编写访问服务的客户端 TestHelloClient.Java
import org.apache.Axis.client.Call;
import org.apache.Axis.client.Service;
import Javax.xml.namespace.QName;
import Javax.xml.rpc.ServiceException;
import Java.net.MalformedURLException;
import Java.rmi.RemoteException;

public class SayHelloClient2
{
    public static void main(String[] args)
        {
        try
                {
  String endpoint =
  "http://localhost:8080
  /Axis/HelloClient.jws";

    Service service = new Service();
            Call call = null;

            call = (Call) service.createCall();

            call.setOperationName
			(new QName(
               "http://localhost:
			   8080/Axis/HelloClient.jws", 
                           "getName"));
            call.setTargetEndpointAddress
  (new Java.net.URL(endpoint));

 String ret = 
 (String) call.invoke(new Object[] 
     {"zhangsan"});
  System.out.println
  ("return value is " + ret);
        } 
                catch (Exception ex)
                {
       ex.printStackTrace();
        }
    }
}
三、编写Dynamic Proxy方式访问服务 1、编写部署服务端程序,同上边DII方式,本次仍使用上边部署的HelloClient 2、编写代理接口









public interface HelloClientInterface
extends Java.rmi.Remote
{
    public String getName(String name)
        throws Java.rmi.RemoteException;
}
3、编写并执行客户端程序TestHelloClient.Java
import Javax.xml.rpc.Service;
import Javax.xml.rpc.ServiceFactory;
import Java.net.URL;
import Javax.xml.namespace.QName;

public class TestHelloClient 
{
    public static void main(String[] args)
        {
        try
        {
            String wsdlUrl = 
"http://localhost:8080/Axis
/HelloClient.jws?wsdl";
   String nameSpaceUri = 
"http://localhost:8080
/Axis/HelloClient.jws";
String serviceName = "HelloClientService";
String portName = "HelloClient";
 ServiceFactory serviceFactory = 
   ServiceFactory.newInstance();
            Service afService =
serviceFactory.createService
(new URL(wsdlUrl),
         new QName
		 (nameSpaceUri, serviceName));
 HelloClientInterface proxy = 
 (HelloClientInterface)
      afService.getPort(new QName(
             nameSpaceUri, portName), 
HelloClientInterface.class);
            System.out.println
 ("return value is "+proxy.getName("john") ) ;
        }catch(Exception ex)
        {
            ex.printStackTrace() ;
        }
    }
}
四、编写wsdd发布web服务,编写stub client访问web服务 1、编写服务端程序server,SayHello.Java,编译server.SayHello.Java
package server;
public class SayHello
{
    public String getName(String name)
    {
        return "hello "+name;
    }
}
2、编写LogHandler.Java
import org.apache.Axis.AxisFault;
import org.apache.Axis.Handler;
import org.apache.Axis.MessageContext;
import org.apache.Axis.handlers.BasicHandler;

import Java.util.Date;

public class LogHandler 
extends BasicHandler 
{
public void invoke
(MessageContext msgContext) 
throws AxisFault
    {
        /** Log an access each time 
                we get invoked.
         */
        try {
            Handler serviceHandler
= msgContext.getService();

            Integer numAccesses =
  (Integer)serviceHandler.getOption("accesses");
            if (numAccesses == null)
                numAccesses = new Integer(0);
numAccesses = new Integer
(numAccesses.intValue() + 1);
Date date = new Date();
String result = 
date + ": service " +
msgContext.getTargetService() +
" accessed " + numAccesses + " time(s).";
serviceHandler.setOption
("accesses", numAccesses);
System.out.println(result);
        } catch (Exception e)
                {
            throw AxisFault.makeFault(e);
        }
    }
}
3、编写wsdd文件
deploy.wsdd
<deployment xmlns=
"http://xml.apache.org/Axis/wsdd/"
  xmlns:Java=
"http://xml.apache.org
/Axis/wsdd/providers/Java">           
   <handler name="print" 
   type="Java:LogHandler"/> 
<service name="sayhello"
provider="Java:RPC">
   <requestFlow>
     <handler type="print"/>
   </requestFlow>
  <parameter name="className" 
  value="server.SayHello"/>
  <parameter name="allowedMethods"
  value="*"/>  
</service>
</deployment>
3、将编译后的文件拷贝到Axis_HOME/WEB-INF/classes下,如:D:\tomcat\webapps\Axis\WEB-INF\classes 4、发布服务: Java org.apache.Axis.client.AdminClient deploy.wsdd 5、生成client stub文件 a:方式1 将SayHello.Java拷贝到Axis_HOME/下,重命名为SayHello.jws, 执行下面的命令生存client stub
Java org.apache.Axis.wsdl.WSDL2Java 
-p client  http://localhost:8080
/Axis/services/SayHello.jws wsdl
b:方式2 执行如下命令生成SayHello.wsdl
Java org.apache.Axis.wsdl.Java2WSDL
-oSayHello.wsdl -lhttp://localhost:8080
/Axis/services/SayHello -nsayhello server.SayHello
执行如下命令生成client stub
Java org.apache.Axis.wsdl.WSDL2Java 
SayHello.wsdl  -p client
生成的stub client文件列表为: 1.SayHello.Java 2.SayHelloService.Java。 3.SayHelloServiceLocator.Java 4.SayHelloSoapBindingStub.Java 6、编写客户端程序,编译并执行
public class SayHelloClient
{
    public static void main(String[] args)
        {
        try
                {
    SayHelloService service = new client.
       SayHelloServiceLocator();
          client.SayHello_PortType 
                  client = service.getSayHello();
String retValue=client.getName("zhangsan");
            System.out.println(retValue);
} 
catch (Exception e)
{
System.err.println
("Execution failed. Exception: " + e);
        }
    }
}
您也可以写server-config.wsdd
<?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.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="URLMapper" 
type="Java:org.apache.axis.handlers.
http.URLMapper"/> 
<handler name="Authenticate" 
type="Java:org.apache.axis.handlers.
SimpleAuthenticationHandler"/>   
  <handler name="print" 
  type="Java:stub.LogHandler"/>
  
  <service name="sayhello" 
  provider="Java:RPC">
   <requestFlow>
     <handler type="print"/>
   </requestFlow>
  <parameter name="className"   
  value="stub.server.SayHello"/>  
  <parameter name="allowedMethods"  
  value="*"/>  
</service>


<transport name="http">  
  <requestFlow>   
   <handler type="URLMapper"/>   
   <handler type="Java:org.apache.axis.
   handlers.http.HTTPAuthHandler"/>  
  </requestFlow> 
</transport> 
<transport name="local">  
  <responseFlow>   
   <handler type="LocalResponder"/>  
  </responseFlow> 
</transport>
</deployment>
(T117)
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