简单的webservice开发例子
2024-07-21 02:15:11
供稿：网友
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);
}
}
}
