icommrest.java

OO 图书馆系统

import java.net.*;
import javax.xml.parsers.*;
import org.apache.axis.message.SOAPBody;
import org.apache.axis.message.SOAPEnvelope;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.w3c.dom.*;

//interface ICommRest for REST
interface ICommRest {
   //set communication between client and searver
   public Document setComm();
}


//real subject CommRestRequest
class CommRestRequest implements ICommRest {
  
  private Document doc;
  private URL url;
  private URLConnection conn;
  
  //constructor 
  public CommRestRequest(URL url){
  	
  	this.url=url;
  	
   }
  
  public Document setComm(){
  	
  	 try{
  	 
  	   //build call
       this.conn = url.openConnection();
       // Get the response
       DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
       DocumentBuilder dber;
       dber = factory.newDocumentBuilder();
       this.doc = dber.parse(conn.getInputStream());
     }
     catch (Exception e) {
       e.printStackTrace();
     }
     
     return doc;
  	
  }
  
}

//proxy of CommRestRequest
class CommRestRequestProxy implements ICommRest {

  private Document doc;
  private URL url;
  private CommRestRequest commrestrequest;
  
  //constructor 
  public CommRestRequestProxy(URL url){
  	
  	this.url=url;
  	
  	
  }
  
  
  public Document setComm(){
  	// Use 'lazy initialization' 
    if (commrestrequest == null)
    {
      commrestrequest = new CommRestRequest(url);
    }

    this.doc=commrestrequest.setComm();
  	return doc;
  	
  }
  
}

//interface ICommSoap for SOAP
interface ICommSoap {
   //set communication between client and searver
   public Document setComm();
}



//real subject CommSoapRequest
class CommSoapRequest implements ICommSoap { 
  private SOAPEnvelope requestenv;
  private SOAPEnvelope env;
  private Document doc;
  private URL url;
  
  //constructor 
  public CommSoapRequest(URL url,SOAPEnvelope env){
  	
  	this.url=url;
  	this.requestenv=env;
  	
  	
  }
  
  public Document setComm(){
  	
  	try{
  	 
  	   // build the call.
       Service service = new Service();
       Call call = (Call) service.createCall();
       call.setTargetEndpointAddress(url);
       this.env = call.invoke(requestenv);
       SOAPBody result = (SOAPBody) env.getBody();
       this.doc = result.getAsDocument();
       
     }
     catch (Exception e) {
       e.printStackTrace();
     }
  	
  	 return doc;
  	
  	
  }
  
}

//proxy of CommSoapRequest
class CommSoapRequestProxy implements ICommSoap {

  
  private SOAPEnvelope requestenv;
  private Document doc;
  private URL url;
  private CommSoapRequest commsoaprequest;
  
  //constructor 
  public CommSoapRequestProxy(URL url,SOAPEnvelope env){
  	
  	this.url=url;
  	this.requestenv=env;
  	
  	
  }
  
  public Document setComm(){
  	// Use 'lazy initialization' 
    if (commsoaprequest == null)
    {
      commsoaprequest = new CommSoapRequest(url,requestenv);
    }
    
    this .doc=commsoaprequest.setComm();
  	return doc;
  	
  }
  
  
}