axis 开发 web service 实战(选自JavaResearch)

最新推荐文章于 2021-07-03 15:03:53 发布

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axis 开发 web service 实战
lianghyan 原创

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Tomcat 5.0
2.到 http://ws.apache.org/axis/网站下载axis安装包
3.解压缩安装包，将AXIS_UNZIP_PATH/axis-version/webapps下的axis包拷贝到TOMCAT_HOME/webapps/下，
    以下约定AXIS_HOME为该TOMCAT_HOME/webapps/axis目录
4.启动tomcat,访问http://localhost:8080/axis 检查安装是否成功
5.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

以下逐一讲述web service在axis上的部署和开发，设置classpath
set CLASSPATH=.;%AXIS_HOME%/lib/axis.jar;%AXIS_HOME%/lib/axis-ant.jar;%AXIS_HOME%/lib/commons-discovery-0.2.jar;%AXIS_HOME%/lib/commons-logging-1.0.4.jar;%AXIS_HOME%/lib/jaxrpc.jar;%AXIS_HOME%/lib/saaj.jar;%AXIS_HOME%/lib/wsdl4j-1.5.1.jar;%AXIS_HOME%/lib/log4j-1.2.8.jar;E:/thirdparty/activation/activation.jar;E:/thirdparty/activation/mail.jar

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);
        }
    }
}