JAX-WS Handler使用

 

1.Handler和Servlet中的filter极为相似，我们可以对所有WebServicer进行拦截，在这个Handler中我们可以记录日志、

   权限控制、对请求的SOAP消息进行加密，解密等。CXF也有Interceptor,不知道有什么区别，后面会学习

 

2.接口javax.xml.ws.handler.Handler和javax.xml.ws.handler.soap.soAPHandler

  定义自己Handler需要实现两个Handler其中一个SOAPHandler是Handler的子接口

  Handler的三个方法

 

 

 

void

 

 

 close(MessageContext context) ：一个webService调用结束时会调用，通常会做释放资源的操作
          

 

  boolean 

 

handleFault(C context) ：当handlerMessage发生异常时，会调用
          

 

 boolean

 

 handleMessage(C context)：调用webService inbound和outbound时都会调用，一次webService调用，

                                           会调用该方法两次

 

 

 

3.实现一个用户身份验证的Handler来说明Handler使用

   3.1定义我们自己Handler

        public class AuthValidationHandler implements SOAPHandler<SOAPMessageContext> {

Java代码

 

1.     public Set<QName> getHeaders() {   
2.         // Todo Auto-generated method stub   
3.         return null;   
4.     }   
5.   
6.     public void close(MessageContext context) {   
7.            
8.     }   
9.   
10.     public boolean handleFault(SOAPMessageContext context) {   
11.         return false;   
12.     }   
13.   
14.     public boolean handleMessage(SOAPMessageContext context) {   
15.            
16.         HttpServletRequest request = (HttpServletRequest)context.get(AbstractHTTPDestination.HTTP_Request);   
17.            
18.         System.out.println("客户端IP："+request.getRemoteAddr());   
19.            
20.         Boolean outbound = (Boolean)context.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);    
21.   
22.           if (!outbound.booleanValue())    
23.           {   
24.               SOAPMessage soapMessage = context.getMessage();   
25.                  
26.               try {   
27.                 SOAPEnvelope soapEnvelope = soapMessage.getSOAPPart().getEnvelope();   
28.                 SOAPHeader soapHeader = soapEnvelope.getHeader();   
29.                    
30.                 if(soapHeader == null)generateSoapFault(soapMessage, "No Message Header...");   
31.                    
32.                 Iterator it = soapHeader.extractHeaderElements(SOAPConstants.URI_SOAP_1_2_ROLE_NEXT);   
33.                    
34.                 if(it == null || !it.hasNext())generateSoapFault(soapMessage, "No Header block for role next");   
35.                    
36.                 Node node = (Node)it.next();   
37.                    
38.                 String value = node == null ? null : node.getValue();   
39.                    
40.                 if(value == null)generateSoapFault(soapMessage, "No authation info in header blocks");   
41.                    
42.                 String[] infos = value.split("&");   
43.                    
44.                 return authValidate(infos[0], infos[1]);   
45.                    
46.                    
47.             } catch (SOAPException e) {   
48.                 e.printstacktrace();   
49.             }   
50.                  
51.           }   
52.   
53.              
54.         return false;   
55.     }   
56.        
57.        
58.     private boolean authValidate(String userName,String password){   
59.         if(userName == null || password == null){   
60.             return false;   
61.         }   
62.            
63.         if("admin".equals(userName) && "admin".equals(password)){   
64.             return true;   
65.         }   
66.         return false;   
67.     }   
68.        
69.     private void generateSoapFault(SOAPMessage soapMessage,String reasion){   
70.         try {   
71.             SOAPBody soapBody = soapMessage.getSOAPBody();   
72.             SOAPFault soapFault = soapBody.getFault();   
73.                
74.             if(soapFault == null){   
75.                 soapFault = soapBody.addFault();   
76.             }   
77.                
78.             soapFault.setFaultString(reasion);   
79.                
80.             throw new SOAPFaultException(soapFault);   
81.                
82.         } catch (SOAPException e) {   
83.             // Todo Auto-generated catch block   
84.             e.printstacktrace();   
85.         }   
86.     }   
87.   
88.        
89. }  

	public Set<QName> getHeaders() {
		// Todo Auto-generated method stub
		return null;
	}

	public void close(MessageContext context) {
		
	}

	public boolean handleFault(SOAPMessageContext context) {
		return false;
	}

	public boolean handleMessage(SOAPMessageContext context) {
		
		HttpServletRequest request = (HttpServletRequest)context.get(AbstractHTTPDestination.HTTP_Request);
		
		System.out.println("客户端IP："+request.getRemoteAddr());
		
		Boolean outbound = (Boolean)context.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY); 

		  if (!outbound.booleanValue()) 
		  {
			  SOAPMessage soapMessage = context.getMessage();
			  
			  try {
				SOAPEnvelope soapEnvelope = soapMessage.getSOAPPart().getEnvelope();
				SOAPHeader soapHeader = soapEnvelope.getHeader();
				
				if(soapHeader == null)generateSoapFault(soapMessage,"No Message Header...");
				
				Iterator it = soapHeader.extractHeaderElements(SOAPConstants.URI_SOAP_1_2_ROLE_NEXT);
				
				if(it == null || !it.hasNext())generateSoapFault(soapMessage,"No Header block for role next");
				
				Node node = (Node)it.next();
				
				String value = node == null ? null : node.getValue();
				
				if(value == null)generateSoapFault(soapMessage,"No authation info in header blocks");
				
				String[] infos = value.split("&");
				
				return authValidate(infos[0],infos[1]);
				
				
			} catch (SOAPException e) {
				e.printstacktrace();
			}
			  
		  }

		  
		return false;
	}
	
	
	private boolean authValidate(String userName,String password){
		if(userName == null || password == null){
			return false;
		}
		
		if("admin".equals(userName) && "admin".equals(password)){
			return true;
		}
		return false;
	}
	
	private void generateSoapFault(SOAPMessage soapMessage,String reasion){
		try {
			SOAPBody soapBody = soapMessage.getSOAPBody();
			SOAPFault soapFault = soapBody.getFault();
			
			if(soapFault == null){
				soapFault = soapBody.addFault();
			}
			
			soapFault.setFaultString(reasion);
			
			throw new SOAPFaultException(soapFault);
			
		} catch (SOAPException e) {
			// Todo Auto-generated catch block
			e.printstacktrace();
		}
	}

	
}

   HttpServletRequest request = (HttpServletRequest)context.get(AbstractHTTPDestination.HTTP_Request);

   可以获取request对象，从而拿到客户端Ip,可以进行非法地址ip排除

 

  Boolean outbound = (Boolean)context.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);

  判断当前是Inbound还是outbound

  只在inbound时做用户校验

 

  我们将用户相信放在soapheader里

 

   3.2在SEI实现类UserServiceImpl上添加@HandlerChain(file = "handlers.xml")

 

   3.3在UserServiceImpl所在包下编写handlers.xml

       <handler-chains xmlns="http://java.sun.com/xml/ns/javaee"

Xml代码

 

1.                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    
2.                 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee">  
3.   <handler-chain>  
4.   
5.     <handler>  
6.       <handler-name>authHandler</handler-name>  
7.       <handler-class>com.cxf.users.AuthValidationHandler</handler-class>  
8.     </handler>  
9.   </handler-chain>  
10. </handler-chains>  

                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                xsi:schemaLocation="http://java.sun.com/xml/ns/javaee">
  <handler-chain>

    <handler>
      <handler-name>authHandler</handler-name>
      <handler-class>com.cxf.users.AuthValidationHandler</handler-class>
    </handler>
  </handler-chain>
</handler-chains>

 

  这样我们服务端就编写好了，我们还有在客户端将我们用户信息加到soapHeader中

 

4.客户端将我们用户信息加到soapHeader中

   4.1客户端Handler

        public class AuthenticationHandler implements SOAPHandler<SOAPMessageContext> {

Java代码

 

1.     public Set<QName> getHeaders() {   
2.         // Todo Auto-generated method stub   
3.         return null;   
4.     }   
5.   
6.     public void close(MessageContext arg0) {   
7.         // Todo Auto-generated method stub   
8.            
9.     }   
10.   
11.     public boolean handleFault(SOAPMessageContext arg0) {   
12.         // Todo Auto-generated method stub   
13.         return false;   
14.     }   
15.   
16.     public boolean handleMessage(SOAPMessageContext ctx) {   
17.         Boolean request_p=(Boolean)ctx.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);   
18.            
19.        if(request_p){   
20.            try {    
21.               SOAPMessage msg=ctx.getMessage();   
22.               SOAPEnvelope env=msg.getSOAPPart().getEnvelope();   
23.               SOAPHeader hdr=env.getHeader();   
24.                  
25.               if(hdr==null)hdr=env.addHeader();   
26.              
27.               //添加认证信息   
28.               QName qname_user=new QName("http://com/auth/","auth");   
29.               SOAPHeaderElement helem_user=hdr.addHeaderElement(qname_user);   
30.               helem_user.setActor(SOAPConstants.URI_SOAP_1_2_ROLE_NEXT);   
31.               helem_user.addTextNode("admin&admin");   
32.               msg.saveChanges();   
33.               //把SOAP消息输出到System.out，即控制台   
34.               msg.writeto(System.out);   
35.               return true;   
36.            } catch (Exception e) {   
37.               e.printstacktrace();   
38.            }   
39.        }   
40.            return false;   
41.     }   
42.   
43.        
44. }  

	public Set<QName> getHeaders() {
		// Todo Auto-generated method stub
		return null;
	}

	public void close(MessageContext arg0) {
		// Todo Auto-generated method stub
		
	}

	public boolean handleFault(SOAPMessageContext arg0) {
		// Todo Auto-generated method stub
		return false;
	}

	public boolean handleMessage(SOAPMessageContext ctx) {
		Boolean request_p=(Boolean)ctx.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);
		
       if(request_p){
           try { 
              SOAPMessage msg=ctx.getMessage();
              SOAPEnvelope env=msg.getSOAPPart().getEnvelope();
              SOAPHeader hdr=env.getHeader();
              
              if(hdr==null)hdr=env.addHeader();
          
              //添加认证信息
              QName qname_user=new QName("http://com/auth/","auth");
              SOAPHeaderElement helem_user=hdr.addHeaderElement(qname_user);
              helem_user.setActor(SOAPConstants.URI_SOAP_1_2_ROLE_NEXT);
              helem_user.addTextNode("admin&admin");
              msg.saveChanges();
              //把SOAP消息输出到System.out，即控制台
              msg.writeto(System.out);
              return true;
           } catch (Exception e) {
              e.printstacktrace();
           }
       }
	       return false;
	}

	
}

 

  4.2将Handler加到HandlerResolver中

      public class UserClient {

Java代码

 

1.     /**  
2.      * @param args  
3.      */  
4.     public static void main(String[] args) {   
5.         UserServiceImplService userServiceImpl = new UserServiceImplService();   
6.            
7.         userServiceImpl.setHandlerResolver(new HandlerResolver(){   
8.   
9.             public List<Handler> getHandlerChain(PortInfo arg0) {   
10.                    
11.                 List<Handler> handlerList = new ArrayList<Handler>();   
12.                 //添加认证信息   
13.                 handlerList.add(new AuthenticationHandler());   
14.                   return handlerList;   
15.             }   
16.                
17.         });   
18.            
19.            
20.         IUserService service = userServiceImpl.getUserServiceImplPort();   
21.            
22.            
23.         User u = new User();   
24.         u.setId(110);   
25.         u.setUserName("张三");   
26.         u.setAddress("杭州");   
27.         u.setSex(0);   
28.         System.out.println();   
29.         System.out.println(service.addUser(u));   
30.            
31.     }   
32.   
33. }  

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		UserServiceImplService userServiceImpl = new UserServiceImplService();
		
		userServiceImpl.setHandlerResolver(new HandlerResolver(){

			public List<Handler> getHandlerChain(PortInfo arg0) {
				
				List<Handler> handlerList = new ArrayList<Handler>();
	            //添加认证信息
	            handlerList.add(new AuthenticationHandler());
	              return handlerList;
			}
			
		});
		
		
		IUserService service = userServiceImpl.getUserServiceImplPort();
		
		
		User u = new User();
		u.setId(110);
		u.setUserName("张三");
		u.setAddress("杭州");
		u.setSex(0);
		System.out.println();
		System.out.println(service.addUser(u));
		
	}

}

 

   这样验证就做好了