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Axis2发布webservice(4)—利用XML文件同时发布多个webservice和跨多个WebService管理Session

我们需要ServiceGroupContext保存跨越多个webservice的session信息;同时需要设置services.xml文件的中service的scope属性为application

一、编写两个webservice:

LoginServiceApplication.java代码如下:

package com.hoo.service;import org.apache.axis2.context.MessageContext;import org.apache.axis2.context.ServiceGroupContext;public class LoginServiceApplication {        //登陆方法    public boolean login(String userName,String password){        MessageContext context = MessageContext.getCurrentMessageContext();            //跨越多个WebService管理session第一步是实例化一个ServiceGroupContext对象,而不是ServiceContext        ServiceGroupContext ctx = context.getServiceGroupContext();        if("admin".equals(userName)&&"123456".equals(password)){            ctx.setProperty("username", userName);            ctx.setProperty("password", password);            ctx.setProperty("msg","登陆成功");            return true;        }else{            ctx.setProperty("msg", "登陆失败");            return false;        }    }        public String getLoginMessage(){        MessageContext context = MessageContext.getCurrentMessageContext();        ServiceGroupContext ctx = context.getServiceGroupContext();        String msg = ctx.getProperty("username")+","+ctx.getProperty("msg");        return msg;    }}

 

SearchSessionService.java代码如下:

package com.hoo.service;import org.apache.axis2.context.MessageContext;import org.apache.axis2.context.ServiceGroupContext;public class SearchSessionService {    public String findSessionMessage(String key){        MessageContext context = MessageContext.getCurrentMessageContext();                ServiceGroupContext ctx = context.getServiceGroupContext();                if(ctx.getProperty(key)!=null){            return "找到session:" + key + "," +ctx.getProperty(key);        }else{            return "没有找到<" + key + ">的数据";        }    }}

 

上面两个webservice都用到了ServiceGroupContext的对象。

 

二、 编写services.xml,同时发布2个webservice,并且将scope设为application,services.xml的内容如下:

<serviceGroup>    <service name="LoginSessionService" scope="application">        <description>            Web Service Session例子        </description>        <parameter name="ServiceClass">            com.hoo.service.LoginServiceApplication        </parameter>        <messageReceivers>            <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-out"                class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />            <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-only"                class="org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver" />        </messageReceivers>    </service>    <service name="SearchSessionService" scope="application">        <description>            Web Service Search Session例子        </description>        <parameter name="ServiceClass">            com.hoo.service.SearchSessionService          </parameter>        <messageReceivers>            <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-out"                class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />            <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-only"                class="org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver" />        </messageReceivers>    </service></serviceGroup>

 

在eclipse里面,file->new->other->axis2 service archiver->next

选择webservice的class文件存放路径,一般选到bin文件夹就行了

然后,next->next->next,出现选择XML的界面:

1

 

取消勾选“generate the service XML automatically”,在上面的文件浏览框中选中刚才保存的services.xml文件,next

选择输出路径和文件名(这里的文件名和webservice的名字没有关系,webservice的名字在XML文件中定义),next->finish,出现创建成功的提示即可

然后利用前面教程中的方法将此AAR文件发不成webservice即可

 

三、编写客户端代码:

import javax.xml.namespace.QName;import org.apache.axis2.AxisFault;import org.apache.axis2.addressing.EndpointReference;import org.apache.axis2.client.Options;import org.apache.axis2.rpc.client.RPCServiceClient;public class LoginSessionServiceClient {    public static void main(String[] args) throws AxisFault {        String target = "http://localhost:8080/axis2/services/LoginSessionService";        RPCServiceClient client = new RPCServiceClient();        Options options = client.getOptions();                //打开对session的支持        options.setManageSession(true);                EndpointReference epr = new EndpointReference(target);        options.setTo(epr);                QName qname = new QName("http://service.hoo.com", "login");        //指定调用的方法和传递参数数据,及设置返回值的类型        Object[] result = client.invokeBlocking(qname, new Object[] { "admin", "123456" }, new Class[] { boolean.class });        System.out.println(result[0]);                qname = new QName("http://service.hoo.com", "getLoginMessage");        result = client.invokeBlocking(qname, new Object[] { null }, new Class[] { String.class });        System.out.println(result[0]);                target = "http://localhost:8080/axis2/services/SearchSessionService";        epr = new EndpointReference(target);        options.setTo(epr);                qname = new QName("http://service.hoo.com", "findSessionMessage");        result = client.invokeBlocking(qname, new Object[] { "username" }, new Class[] { String.class });        System.out.println(result[0]);        qname = new QName("http://service.hoo.com", "findSessionMessage");        result = client.invokeBlocking(qname, new Object[] { "msg" }, new Class[] { String.class });        System.out.println(result[0]);                qname = new QName("http://service.hoo.com", "findSessionMessage");        result = client.invokeBlocking(qname, new Object[] { "password" }, new Class[] { String.class });        System.out.println(result[0]);    }}

运行后结果如下:

true
      admin,登陆成功
      找到session:username,admin
      找到session:msg,登陆成功
      找到session:password,123456

 

如果将services.xml文件<service name="SearchSessionService" scope="application">的内容改成scope=transportsession,就会出现找不到session中的内容错误。