基于Xfire SOAP Header的WebService安全验证教程 .

WebSerice是一种开放的web服务，任何人都可以访问，但我们有时候需要考虑只有付费用户才能使用WS,所以，我们就需要对WS加入安全验证机制，当然，可以利用防火墙的IP过滤，web应用的配置从最外层去隔离非法用户，但在内层，我们也可以使用SOAP Header的方式，由客户端发送验证数据，服务端验通过后基WS访问权限

首先根据我的这篇Blog

http://blog.csdn.net/daryl715/archive/2007/07/25/1707161.aspx

配置WS Server和WS Client，其中Client端的测试代码类名由Client改为ClientTest,因为我们要用到Xfire的一个名为Client的类

首先我们编写服务端验证类继承AbstractHandler

package test;

import org.codehaus.xfire.MessageContext;

import org.codehaus.xfire.handler.AbstractHandler;

import org.jdom.Element;

public class AuthenticationHandler extends AbstractHandler ... {

public void invoke(MessageContext cfx) throws Exception ...{

if(cfx.getInMessage().getHeader() == null)

...{

throw new org.codehaus.xfire.fault.XFireFault("请求必须包含验证信息",org.codehaus.xfire.fault.XFireFault.SENDER);

}

Element token=cfx.getInMessage().getHeader().getChild("AuthenticationToken");

if (token == null)

...{

throw new org.codehaus.xfire.fault.XFireFault("请求必须包含身份验证信息", org.codehaus.xfire.fault.XFireFault.SENDER);

}

String username = token.getChild("Username").getValue();

String password = token.getChild("Password").getValue();

try

...{

//进行身份验证，只有abcd@1234的用户为授权用户

if(username.equals("abcd") && password.equals("1234"))

//这语句不显示

System.out.println("身份验证通过");

else throw new Exception();

}

catch (Exception e)

...{

throw new org.codehaus.xfire.fault.XFireFault("非法的用户名和密码", org.codehaus.xfire.fault.XFireFault.SENDER);

}

下面是Client发送授权信息

package test;

import org.codehaus.xfire.MessageContext;

import org.codehaus.xfire.handler.AbstractHandler;

import org.jdom.Element;

public class ClientAuthenticationHandler extends AbstractHandler ... {

private String username = null;

private String password = null;

public ClientAuthenticationHandler() ...{

}

public ClientAuthenticationHandler(String username,String password) ...{

this.username = username;

this.password = password;

}

public void setUsername(String username) ...{

this.username = username;

}

public void setPassword(String password) ...{

this.password = password;

}

public void invoke(MessageContext context) throws Exception ...{

//为SOAP Header构造验证信息

Element el = new Element("header");

context.getOutMessage().setHeader(el);

Element auth = new Element("AuthenticationToken");

Element username_el = new Element("Username");

username_el.addContent(username);

Element password_el = new Element("Password");

password_el.addContent(password);

auth.addContent(username_el);

auth.addContent(password_el);

el.addContent(auth);

}

为ClientTest.java加入以下代码

XFireProxy proxy = (XFireProxy)Proxy.getInvocationHandler(service);
Client client = proxy.getClient();
client.addOutHandler(new ClientAuthenticationHandler("abcd1","1234"));

等等，还没有完，修改Services.xm为WS绑定Handler

<? xml version="1.0" encoding="UTF-8" ?>

< beans >

< service xmlns ="http://xfire.codehaus.org/config/1.0" >

< name > HelloService </ name >

< namespace > http://test/HelloService </ namespace >

< serviceClass > test.IHelloService </ serviceClass >

< implementationClass > test.HelloServiceImpl </ implementationClass >

< inHandlers >

< handler handlerClass ="test.AuthenticationHandler" ></ handler >

</ inHandlers >

</ service >

</ beans >

这样我们就完成了编码，下面启动tomcat，运行客户端代码，本文为abcd@1234位授权用户，使用abcd@1234,可以正常访问WS,如果用错误帐号，则会有以下异常

Exception in thread "main" org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: 非法的用户名和密码

org.codehaus.xfire.fault.XFireFault: 非法的用户名和密码

at org.codehaus.xfire.fault.Soap11FaultSerializer.readMessage(Soap11FaultSerializer.java:31)

at org.codehaus.xfire.fault.SoapFaultSerializer.readMessage(SoapFaultSerializer.java:28)

at org.codehaus.xfire.soap.handler.ReadHeadersHandler.checkForFault(ReadHeadersHandler.java:111)

at org.codehaus.xfire.soap.handler.ReadHeadersHandler.invoke(ReadHeadersHandler.java:67)

at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)

at org.codehaus.xfire.client.Client.onReceive(Client.java:406)

at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:139)

at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)

at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)

at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)

at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:79)

at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:114)

at org.codehaus.xfire.client.Client.invoke(Client.java:336)

at org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)

at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)

at $Proxy0.getUser(Unknown Source)

at test.ClientTest.main(ClientTest.java:39)

如果不在CientTest加以下增加Heade则会有以下异常

XFireProxy proxy = (XFireProxy)Proxy.getInvocationHandler(service);
Client client = proxy.getClient();
client.addOutHandler(new ClientAuthenticationHandler("abcd1","1234"));

Exception in thread "main" org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: 请求必须包含验证信息

org.codehaus.xfire.fault.XFireFault: 请求必须包含验证信息