We want to intercept the WS input and output. In order to:

• Logging any part in the message
• Registering sent messages
• Add security controls
• ....

Here we are going to do a input/output WS example log. We annotate the WS with Handler Chain descriptor:

@WebService
@HandlerChain(file="src/META-INF/handlerChain.xml")
public class Hello {
@WebMethod
    public String sayHello(String name) {
        return "Hello, "+name+".";
    }
}

It will have the following contents:

  
     
        
         lebrijo.handlers.WSHandler  
        
     
  

WSHandler class will implements the SOAPHandler interface:

public class WSHandler implements SOAPHandler {  
 
     public Set getHeaders() {  
         return null;  
     }  
  
     public boolean handleFault(SOAPMessageContext context) {  
         logToSystemOut(context);  
         return true;  
     }  
 
     public boolean handleMessage(SOAPMessageContext context) {  
         logToSystemOut(context);  
         return true;  
     }  

     private void logToSystemOut(SOAPMessageContext smc) {  
         Boolean outboundProperty = (Boolean) smc.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);  
   
         if (outboundProperty.booleanValue()) {  
             System.out.println("Outgoing message:");  
         } else {  
             System.out.println("Incoming message:");  
         }  
   
         SOAPMessage message = smc.getMessage();  
         try {  
             message.writeTo(System.out);  
         } catch (Exception e) {  
             System.out.println("Exception in handler: " + e);  
         }  
     }

	public void close(MessageContext context) {
		// TODO Auto-generated method stub
		
	}