Axis开发Web Service实例
2008-04-26 14:12
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[align=left]· 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 [/align]
[align=left] 2、到 http://ws.Apache.org/axis/网站下载Axis安装包[/align]
[align=left] 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[/align]
[align=left] 4、启动tomcat, 访问http://localhost:8080/axis检查安装是否成功 [/align]
[align=left] 5、以上步骤执行成功,可以开发webservice例子了[/align]
[align=left] Axis支持三种web service的部署和开发,分别为:[/align]
[align=left] 1、Dynamic Invocation Interface ( DII)[/align]
[align=left] 2、Stubs方式[/align]
[align=left] 3、Dynamic Proxy方式[/align]
[align=left]二、编写DII(Dynamic Invocation Interface )方式web服务[/align]
[align=left] 1.编写服务端程序SayHello.java[/align]
[align=left] public class SayHello {
public String getName(String name) {
return "hello "+name;
}
}
2、将源码拷贝到Axis_HOME下,重命名为SayHello.jws[/align]
[align=left] 3、访问连接http://localhost:8080/axis/SayHello.jws?wsdl,页面显示Axis自动生成的wsdl[/align]
[align=left] 4、编写访问服务的客户端 SayHelloClient.java[/align]
[align=left] 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;[/align]
public class SayHelloClient {
public static void main(String[] args) {
try {
String endpoint = "http://localhost:8080/axis/SayHello.jws";
Service service = new Service();
Call call = null;
call = (Call) service.createCall();
call.setOperationName(new QName("http://localhost:8080/axis/SayHello.jws",
"getName"));
call.setTargetEndpointAddress(new java.net.URL(endpoint));
String ret = (String) call.invoke(new Object[] {"someone's name"});
System.out.println("return value is " + ret);
}
catch (Exception ex) {
4000
ex.printStackTrace();
}
}
}
三、编写Dynamic Proxy方式访问服务
[align=left] 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[/align]
[align=left] 2、编写代理接口[/align]
[align=left] public interface HelloClientInterface extends java.rmi.Remote {
public String getName(String name) throws java.rmi.RemoteException;
}[/align]
[align=left] 3、编写并执行客户端程序TestHelloClient.java[/align]
[align=left] import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;
import java.net.URL;
import javax.xml.namespace.QName;[/align]
[align=left] public class TestHelloClient {
public static void main(String[] args) {
try {
String wsdlUrl = "http://localhost:8080/axis/SayHello.jws?wsdl";
String nameSpaceUri = "http://localhost:8080/axis/SayHello.jws";
String serviceName = "SayHelloService";
String portName = "SayHello";[/align]
[align=left] 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("someone's name") ) ;
} catch(Exception ex) {
ex.printStackTrace() ;
}
}
}[/align]
[align=left]四、编写wsdd发布web服务,编写stub client访问web服务[/align]
[align=left] 1、编写服务端程序SayHello.java,编译SayHello.java[/align]
[align=left] package server;
public class SayHello {
public String getName(String name) {
return "hello "+name;
}
}[/align]
[align=left] 2. 编写LogHandler.java[/align]
[align=left] import org.apache.axis.AxisFault;
import org.apache.axis.Handler;
import org.apache.axis.MessageContext;
import org.apache.axis.handlers.BasicHandler;[/align]
[align=left] import java.util.Date;[/align]
[align=left] 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);
}
}
}[/align]
[align=left] 3、编写wsdd文件[/align]
[align=left] <?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">
<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>[/align]
[align=left] 4、将编译后的SayHello.class和LogHandler.class文件拷贝到Axis_HOME/WEB-INF/classes下,如:D:/tomcat/webapps/axis/WEB-INF/classes[/align]
[align=left] 5、发布服务:[/align]
[align=left] java org.apache.axis.client.AdminClient deploy.wsdd[/align]
[align=left] 6、生成client stub文件[/align]
[align=left] 方式一:jws即时自动部署[/align]
[align=left] 将SayHello.java拷贝到Axis_HOME/services目录下,重命名为SayHello.jws,执行下面的命令生成client stub[/align]
[align=left] java org.apache.axis.wsdl.WSDL2Java -p client http://localhost:8080/axis/services/SayHello.jws?wsdl
注意:这种方式要求在你写的类中不能有具体包的信息,因为这正是Axis即时部署不支持的。由于在SayHello.java中特意加入了"package server;",因此不能采用jws即时自动部署。
自动部署相当简单,但当你需要:
.映射自己的类型时
.不需要暴露源代码时
.需要自己的路径和包管理时
.对用户操作Web Services的事件进行相应时[/align]
[align=left] 就需要通过WSDD来自定义部署。[/align]
[align=left] 方式二:通过WSDD自定义部署[/align]
[align=left] 执行如下命令生成SayHello.wsdl[/align]
[align=left] java org.apache.axis.wsdl.Java2WSDL -oSayHello.wsdl -lhttp://localhost:8080/axis/services/SayHello -nSayHello server.SayHello[/align]
[align=left] 执行如下命令生成client stub[/align]
[align=left] java org.apache.axis.wsdl.WSDL2Java SayHello.wsdl -p client[/align]
[align=left] 这时在当前目录下生成了client子目录,在client目录中生成的stub client文件列表为:[/align]
[align=left] (1).SayHello_PortType.java[/align]
[align=left] (2).SayHelloService.java[/align]
[align=left] (3).SayHelloServiceLocator.java[/align]
[align=left] (4).SayHelloSoapBindingStub.java[/align]
[align=left] 6、编写客户端程序,编译并执行[/align]
import client.*;
public class SayHelloClient {
public static void main(String[] args){
try{
SayHelloService service = new client.SayHelloServiceLocator();
client.SayHello_PortType client = service.getSayHello(
992e
);
String retValue=client.getName("someone's name");
System.out.println(retValue);
} catch (Exception e) {
System.err.println("Execution failed. Exception: " + e);
}
}
}
[align=left] 您也可以编写server-config.wsdd,存放在Axis_HOME/WEB-INF目录下。
<?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:LogHandler"/>
<service name="sayhello" provider="java:RPC">
<requestFlow>
<handler type="print"/>
</requestFlow>
<parameter name="className" value="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>[/align]
[align=left]文章引用自: [/align]
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