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：

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。