JAVA WebService实例

一、Axis安装 1、环境 J2SE SDK 1.5 or 1.6: 我使用 1.6 Servlet Container: 我使用的Tomcat 6.0

2、到 http://ws.apache.org/Axis/网站下载Axis安装包

3、先在eclipse下新建web project为WebServiceDemo.在Tomcat的配置xml配置上：<Context path="/webservice" docBase="D:/workspace/WebServiceDemo/WebRoot"/>.解压下载的axis安装包，将webapps/axis下的lib文件夹和web.xml文件拷到工程对应目录

4、启动tomcat,访问http://localhost/webservice检查安装是否成功，我的端口设置为80，页面index.html自动跳转后出错，是因为没把类拷入，先不管。

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

二、编写DII(Dynamic Invocation Interface )方式web服务

1.新建包com.qdl.server,编写服务端程序SayHello

package com.qdl.server;

public class SayHello

{

      public String getName(String name)

      {

          return "hello "+name;

      }

}

2、将源码拷贝到WebRoot下，重命名为 SayHello.jws (注意不用拷上面的package ...行)

3、访问连接http://localhost/webservice/SayHello.jws?wsdl，页面显示Axis自动生成的wsdl，同时会在WEB-INF下创建jwsClasses文件夹，在此生成SayHello.class文件

4、新建包com.qdl.client,编写访问服务的客户端 SayHelloClient.java

import javax.xml.namespace.QName;

import org.apache.axis.client.Call;

import org.apache.axis.client.Service;

public class SayHelloClient {

public static void main(String[] args){

   //程序访问即时发布的服务

   try{

    //创建访问点

    String endpoint = "http://localhost/webservice/SayHello.jws";

    //创建service

    Service service = new Service();

    Call call = null;

    //创建call

    call = (Call) service.createCall();

    //设置操作名

    call.setOperationName(new QName("http://localhost/webservice/SayHello.jws","getName"));

    //设置访问点

    call.setTargetEndpointAddress(new java.net.URL(endpoint));

    //调用服务，返回值

    String ret = (String) call.invoke(new Object[]{"zhangsan"});

    System.out.println("返回的信息是：" + 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SayHello

2、新建包com.qdl.dao编写代理接口

package com.qdl.dao;

import java.rmi.Remote;

public interface HelloClientInterface extends Remote {

public String getName(String name) throws java.rmi.RemoteException;

}

3、编写并执行客户端程序TestHelloClient.java

package com.qdl.client;

import java.net.URL;

import javax.xml.namespace.QName;

import javax.xml.rpc.ServiceFactory;

import javax.xml.rpc.Service;

import com.qdl.dao.HelloClientInterface;

public class TestHelloClient {

public static void main(String[] args) {

   try {

    String wsdlUrl = "http://localhost/webservice/SayHello.jws?wsdl";

    String nameSpaceUri = "http://localhost/webservice/SayHello.jws";

    //注意下面的serviceName和portName,

    //http://localhost/webservice/SayHello.jws?wsdl页面的xml最下端有

    String serviceName = "SayHelloService";

    String portName = "SayHello";

    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("返回信息是：" + proxy.getName("zhangsan"));

   } catch (Exception ex) {

    ex.printStackTrace();

   }

}

}

四、编写wsdd发布web服务，编写stub client访问web服务(定制发布服务)

1、编写服务端程序SayHello

package com.qdl.server;

public class SayHello

{

      public String getName(String name)

      {

          return "hello "+name;

      }

}

2.编写LogHandler.java(好像这个并没什么用)

import java.util.Date;

import org.apache.axis.AxisFault;

import org.apache.axis.Handler;

import org.apache.axis.MessageContext;

import org.apache.axis.handlers.BasicHandler;

public class LogHandler extends BasicHandler {

public void invoke(MessageContext msgContext) throws AxisFault {

   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、先在WEB-INF目录下编写server-config.wsdd文件：

文件名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.Directory" value="./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="URLMapper"

          type="java:org.apache.axis.handlers.http.URLMapper"/>

<handler name="Authenticate"

          type="java:org.apache.axis.handlers.SimpleAuthenticationHandler"/>

<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>

<service name="Version" provider="java:RPC">

<parameter name="allowedMethods" value="getVersion"/>

<parameter name="className" value="org.apache.axis.Version"/>

</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>

 

然后在WEB-INF下再编写deploy.wsdd文件：

文件名deploy.wsdd

<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">

<service name="MyService" provider="java:RPC">

   <parameter name="className" value="com.qdl.server.SayHello"/>

   <parameter name="allowedMethods" value="*"/>

</service>

</deployment>

4、发布服务：

java org.apache.axis.client.AdminClient -lhttp://地址:端口/context模块/services/AdminService deploy.wsdd

这一命令主要是把deploy.wsdd的service配置到server-config.wsdd中,同时更新内存

注意：上面命令的前提是要把axis的jar包配置到系统classpath环境变量中，否则报找不到类的错误

5、生成client stub文件

a:方式1(本人用得此种方式)

将SayHello.java拷贝到WebRoot下(前面已经拷贝)，重命名为SayHello.jws，

执行下面的命令生存client stub

java org.apache.axis.wsdl.WSDL2Java -p com.qdl.client http://localhost/webservice/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/webservice/SayHello -nsayhello com.qdl.server.SayHello

执行如下命令生成client stub

java org.apache.axis.wsdl.WSDL2Java SayHello.wsdl -p com.qdl.client

此时在文件夹WEB-INF下com.qdl.client下生成的stub client文件列表为：

1.SayHello.java

2.SayHelloService.java。

3.SayHelloServiceLocator.java

4.SayHelloSoapBindingStub.java

把com包整体剪到src下编译

6、编写客户端程序，编译并执行

package com.qdl.client;

public class SayHelloClient2 {

public static void main(String[] args){

   //访问定制发布的服务

   try{

    SayHelloService service = new SayHelloServiceLocator();

    SayHello_PortType client = service.getSayHello();

    String retValue = client.getName("zhangsan");

    System.out.println("返回的信息是："+retValue);

   }catch (Exception e){

    System.err.println("Execution failed. Exception: " + e);

   }

}

}