EJB的WebService

 

第一个EJB项目 -hxzon -ejbcode 
一，新建一个EJB项目。命名为firstEjb。
1，新建一个接口。
package hxzon;
public interface Hello {
public String saySomething(String name);
}
2，新建一个无状态会话bean。
package hxzon;
import javax.ejb.Remote;
import javax.ejb.Stateless;
@Stateless
@Remote
public class HelloBean implements Hello { public String saySomething(String name) {
   return "hello,"+name;
}
}
3，部署到JBoss。
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二，新建一个java项目，作为客户端。
1，项目添加JBossClient依赖包。
2，项目添加firstEjb项目，因为要使用到Hello接口。
3，新建客户端类。
package hxzon;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class HelloClient {
public static void main(String[] args){
   try {
    InitialContext ctx=new InitialContext();
    Hello ejb=(Hello)ctx.lookup("HelloBean/remote");
    System.out.print(ejb.saySomething("hxzon"));
   } catch (NamingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
}
}
4，编写jndi属性文件。放在类根路径下。
该文件可在jboss4.2.2.GA\server\default\conf文件夹下找到。
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost
5，运行客户端程序。成功。
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EJB部署为WebService -hxzon -wscode -ejbcode

一，新建EJB项目。
1，这里借用firstEjb项目，只需添加两个注解。
package hxzon; import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.jws.WebMethod;
import javax.jws.WebService; @Stateless
@Remote
@WebService
public class HelloBean implements Hello { @WebMethod
public String saySomething(String name) {
   return "hello,"+name;
} }
2，部署。在网址中输入http://localhost:8080/firstEjb/HelloBean?wsdl
可以看到wsdl文件。
路径为http://localhost:8080/jar文件名/发布的实现类名?wsdl

http://127.0.0.1：8080/jbossws/services 查看webservice的发布情况
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二，新建客户端项目。
1，这里我们借用axis-bin-1_4.zip里的
samples.client.DynamicInvoker类来充当WebService客户端。
记得项目导入axis依赖包。
package samples.client; import org.apache.axis.Constants;
import org.apache.axis.utils.XMLUtils;
import org.apache.axis.encoding.ser.SimpleDeserializer;
import org.apache.axis.encoding.ser.ElementSerializerFactory;
import org.apache.axis.encoding.ser.ElementDeserializerFactory;
import org.apache.axis.encoding.ser.ElementDeserializer;
import org.apache.axis.wsdl.gen.Parser;
import org.apache.axis.wsdl.symbolTable.BaseType;
import org.apache.axis.wsdl.symbolTable.BindingEntry;
import org.apache.axis.wsdl.symbolTable.Parameter;
import org.apache.axis.wsdl.symbolTable.Parameters;
import org.apache.axis.wsdl.symbolTable.ServiceEntry;
import org.apache.axis.wsdl.symbolTable.SymTabEntry;
import org.apache.axis.wsdl.symbolTable.SymbolTable;
import org.apache.axis.wsdl.symbolTable.TypeEntry;
import org.w3c.dom.Element; import javax.wsdl.Binding;
import javax.wsdl.Operation;
import javax.wsdl.Port;
import javax.wsdl.Service;
import javax.wsdl.extensions.soap.SOAPAddress;
import javax.xml.namespace.QName;
import javax.xml.rpc.Call;
import javax.xml.rpc.encoding.Deserializer;
import javax.xml.rpc.encoding.DeserializerFactory;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Vector; 
public class DynamicInvoker {     private Parser wsdlParser = null;     public DynamicInvoker(String wsdlURL) throws Exception {
        // Start by reading in the WSDL using Parser
        wsdlParser = new Parser();
        System.out.println("Reading WSDL document from '" + wsdlURL + "'");
        wsdlParser.run(wsdlURL);
    }     private static void usage() {
        System.err.println(
                "Usage: java " + DynamicInvoker.class.getName() + " wsdlLocation "
                + "operationName[(portName)] "
                + "[argument1 ...]");
        System.exit(1);
    }     public static void main(String[] args) throws Exception {
        if (args.length < 2) {
            usage();
        }
        String wsdlLocation = (args.length > 0)
                ? args[0]
                : null;
        String operationName = (args.length > 1)
                ? args[1]
                : null;
        String portName = null;
        try {
            portName = operationName.substring(operationName.indexOf("(") + 1,
                                               operationName.indexOf(")"));
            operationName = operationName.substring(0, operationName.indexOf("("));
        } catch (Exception ignored) {
        }         DynamicInvoker invoker = new DynamicInvoker(wsdlLocation);
        HashMap map = invoker.invokeMethod(operationName, portName, args);         for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
            Map.Entry entry = (Map.Entry) it.next();
            String key = (String) entry.getKey();
            Object value = entry.getValue();
            if (value instanceof Element) {
                System.out.println("====== " + key + " ======");
                XMLUtils.ElementToStream((Element) value, System.out);
                System.out.println("=========================");
            } else {
                System.out.println(key + "=" + value);
            }
        }
        System.out.println("\nDone!");
    }     public HashMap invokeMethod(
            String operationName, String portName, String[] args)
            throws Exception {
        String serviceNS = null;
        String serviceName = null;
        String operationQName = null;         System.out.println("Preparing Axis dynamic invocation");
        Service service = selectService(serviceNS, serviceName);
        Operation operation = null;
        org.apache.axis.client.Service dpf = new org.apache.axis.client.Service(wsdlParser, service.getQName());         Vector inputs = new Vector();
        Port port = selectPort(service.getPorts(), portName);
        if (portName == null) {
            portName = port.getName();
        }
        Binding binding = port.getBinding();
        Call call = dpf.createCall(QName.valueOf(portName),
                                   QName.valueOf(operationName));
        ((org.apache.axis.client.Call)call).setTimeout(new Integer(15*1000));
        ((org.apache.axis.client.Call)call).setProperty(ElementDeserializer.DESERIALIZE_CURRENT_ELEMENT, Boolean.TRUE);
        
        // Output types and names
        Vector outNames = new Vector();         // Input types and names
        Vector inNames = new Vector();
        Vector inTypes = new Vector();
        SymbolTable symbolTable = wsdlParser.getSymbolTable();
        BindingEntry bEntry =
                symbolTable.getBindingEntry(binding.getQName());
        Parameters parameters = null;
        Iterator i = bEntry.getParameters().keySet().iterator();         while (i.hasNext()) {
            Operation o = (Operation) i.next();
            if (o.getName().equals(operationName)) {
                operation = o;
                parameters = (Parameters) bEntry.getParameters().get(o);
                break;
            }
        }
        if ((operation == null) || (parameters == null)) {
            throw new RuntimeException(operationName + " was not found.");
        }         // loop over paramters and set up in/out params
        for (int j = 0; j < parameters.list.size(); ++j) {
            Parameter p = (Parameter) parameters.list.get(j);             if (p.getMode() == 1) {           // IN
                inNames.add(p.getQName().getLocalPart());
                inTypes.add(p);
            } else if (p.getMode() == 2) {    // OUT
                outNames.add(p.getQName().getLocalPart());
            } else if (p.getMode() == 3) {    // INOUT
                inNames.add(p.getQName().getLocalPart());
                inTypes.add(p);
                outNames.add(p.getQName().getLocalPart());
            }
        }         // set output type
        if (parameters.returnParam != null) {             if(!parameters.returnParam.getType().isBaseType()) {
                ((org.apache.axis.client.Call)call).registerTypeMapping(org.w3c.dom.Element.class, parameters.returnParam.getType().getQName(),
                            new ElementSerializerFactory(),
                            new ElementDeserializerFactory());
            }             // Get the QName for the return Type
            QName returnType = org.apache.axis.wsdl.toJava.Utils.getXSIType(
                    parameters.returnParam);
            QName returnQName = parameters.returnParam.getQName();             outNames.add(returnQName.getLocalPart());
        }         if (inNames.size() != args.length - 2)
            throw new RuntimeException("Need " + inNames.size() + " arguments!!!");         for (int pos = 0; pos < inNames.size(); ++pos) {
            String arg = args[pos + 2];
            Parameter p = (Parameter) inTypes.get(pos);
            inputs.add(getParamData((org.apache.axis.client.Call) call, p, arg));
        }
        System.out.println("Executing operation " + operationName + " with parameters:");
        for (int j = 0; j < inputs.size(); j++) {
            System.out.println(inNames.get(j) + "=" + inputs.get(j));
        }
        Object ret = call.invoke(inputs.toArray());
        Map outputs = call.getOutputParams();
        HashMap map = new HashMap();         for (int pos = 0; pos < outNames.size(); ++pos) {
            String name = (String) outNames.get(pos);
            Object value = outputs.get(name);             if ((value == null) && (pos == 0)) {
                map.put(name, ret);
            } else {
                map.put(name, value);
            }
        }
        return map;
    }     private Object getParamData(org.apache.axis.client.Call c, Parameter p, String arg) throws Exception {
        // Get the QName representing the parameter type
        QName paramType = org.apache.axis.wsdl.toJava.Utils.getXSIType(p);         TypeEntry type = p.getType();
        if (type instanceof BaseType && ((BaseType) type).isBaseType()) {
            DeserializerFactory factory = c.getTypeMapping().getDeserializer(paramType);
            Deserializer deserializer = factory.getDeserializerAs(Constants.AXIS_SAX);
            if (deserializer instanceof SimpleDeserializer) {
                return ((SimpleDeserializer)deserializer).makeValue(arg);
            }
        }
        throw new RuntimeException("not know how to convert '" + arg
                                   + "' into " + c);
    }     public Service selectService(String serviceNS, String serviceName)
            throws Exception {
        QName serviceQName = (((serviceNS != null)
                && (serviceName != null))
                ? new QName(serviceNS, serviceName)
                : null);
        ServiceEntry serviceEntry = (ServiceEntry) getSymTabEntry(serviceQName,
                                                                  ServiceEntry.class);
        return serviceEntry.getService();
    }     public SymTabEntry getSymTabEntry(QName qname, Class cls) {
        HashMap map = wsdlParser.getSymbolTable().getHashMap();
        Iterator iterator = map.entrySet().iterator();         while (iterator.hasNext()) {
            Map.Entry entry = (Map.Entry) iterator.next();
            QName key = (QName) entry.getKey();
            Vector v = (Vector) entry.getValue();             if ((qname == null) || qname.equals(qname)) {
                for (int i = 0; i < v.size(); ++i) {
                    SymTabEntry symTabEntry = (SymTabEntry) v.elementAt(i);                     if (cls.isInstance(symTabEntry)) {
                        return symTabEntry;
                    }
                }
            }
        }
        return null;
    }     public Port selectPort(Map ports, String portName) throws Exception {
        Iterator valueIterator = ports.keySet().iterator();
        while (valueIterator.hasNext()) {
            String name = (String) valueIterator.next();             if ((portName == null) || (portName.length() == 0)) {
                Port port = (Port) ports.get(name);
                List list = port.getExtensibilityElements();                 for (int i = 0; (list != null) && (i < list.size()); i++) {
                    Object obj = list.get(i);
                    if (obj instanceof SOAPAddress) {
                        return port;
                    }
                }
            } else if ((name != null) && name.equals(portName)) {
                return (Port) ports.get(name);
            }
        }
        return null;
    }
}
2，运行samples.client.DynamicInvoker类。
运行时需要在open run dialog配置三个参数。
在arguments标签中输入
http://localhost:8080/firstEjb/HelloBean?wsdl saySomething hxzon
运行成功。
可看到控制台输出
Reading WSDL document from 'http://localhost:8080/firstEjb/HelloBean?wsdl'
Preparing Axis dynamic invocation
Executing operation saySomething with parameters:
saySomething>arg0=hxzon
saySomethingResponse>return=hello,hxzon Done! ============================================================
============================================================
wsdl文件，该文件自动生成。
xmlns='http://schemas.xmlsoap.org/wsdl/'
xmlns:soap='http://schemas.xmlsoap.org/wsdl/soap/'
xmlns:tns='http://hxzon/'
xmlns:xsd='http://www.w3.org/2001/XMLSchema'>

       xmlns:tns='http://hxzon/'
    xmlns:xs='http://www.w3.org/2001/XMLSchema'>
   
         type='tns:saySomethingResponse' />
   
    
             type='xs:string' />
        
   
    
             type='xs:string' />
    
   
  

       name='saySomethingResponse'>
  


  


  
   
   

  


       transport='http://schemas.xmlsoap.org/soap/http' />
  
   
   
    
       

    
   

  


  
         location='http://127.0.0.1:8080/firstEjb/HelloBean' />
  

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消息bean简单例子 -ejbcode -hxzon 一，新建Ejb项目。
实现MessageListener接口，添加@MessageDriven注解。
package hxzon; import javax.ejb.MessageDriven;
import javax.ejb.ActivationConfigProperty;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage; @MessageDriven(
activationConfig={
    @ActivationConfigProperty(propertyName="destinationType",
      propertyValue="javax.jms.Queue"),
    @ActivationConfigProperty(propertyName="destination",
      propertyValue="queue/myqueue")
}
) public class HelloMDB implements MessageListener{ public void onMessage(Message msg) {
   TextMessage tmsg=(TextMessage)msg;
   try {
    System.out.println("已接收消息。。。"+tmsg.getText());
   } catch (JMSException e) {
    e.printStackTrace();
   }
} }
二，新建客户端项目。
package hxzon; import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.TextMessage;
import javax.naming.InitialContext; public class MDBClient { public static void main(String[] args) {
   try {
    InitialContext ctx=new InitialContext();
    QueueConnectionFactory factory=(QueueConnectionFactory)ctx.lookup("ConnectionFactory");
    QueueConnection con=factory.createQueueConnection();
    QueueSession session=con.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
    Queue queue=(Queue)ctx.lookup("queue/myqueue");
    TextMessage msg=session.createTextMessage("hello,hxzon");
    QueueSender sender=session.createSender(queue);
    sender.send(msg);
    session.close();
    System.out.println("已发送消息");
   } catch (Exception e) {
    e.printStackTrace();
   } } }
运行成功。
上述是点到点模型，也可使用发布-预定模型。只需将Queue改为Topic即可。QueueSender改为TopicPublisher，调用publish(msg)方法。
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package hxzon; import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage; @MessageDriven(
   activationConfig={
     @ActivationConfigProperty(propertyName="destinationType",
       propertyValue="javax.jms.Topic"),
     @ActivationConfigProperty(propertyName="destination",
       propertyValue="topic/mytopic")
   }
)
public class HelloTopicMDB implements MessageListener { public void onMessage(Message msg) {
   TextMessage tmsg=(TextMessage)msg;
   try {
    System.out.println("已接收消息。。。"+tmsg.getText());
   } catch (JMSException e) {
    e.printStackTrace();
   } } }
----------------------------------------------------------------------
package hxzon; import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicPublisher;
import javax.jms.TopicSession;
import javax.naming.InitialContext; public class TopicMDBClient { 
public static void main(String[] args) {
   try {
    InitialContext ctx=new InitialContext();
    TopicConnectionFactory factory=(TopicConnectionFactory)ctx.lookup("ConnectionFactory");
    TopicConnection con=factory.createTopicConnection();
    TopicSession session=con.createTopicSession(false, TopicSession.AUTO_ACKNOWLEDGE);
    Topic topic=(Topic)ctx.lookup("topic/mytopic");
    TextMessage msg=session.createTextMessage("hello,hxzon");
    TopicPublisher publisher=session.createPublisher(topic);
    publisher.publish(msg);
    session.close();
    System.out.println("已发送消息");
   } catch (Exception e) {
    e.printStackTrace();
   } } }