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基于Xfire SOAP Header的WebService安全驗證教程 .

WebSerice是一種開放的web服務，任何人都可以訪問，但我們有時候需要考慮只有付費用戶才能使用WS,所以，我們就需要對WS加入安全驗證機制，當然，可以利用防火墻的IP過濾，web應用的配置從最外層去隔離非法用戶，但在內層，我們也可以使用SOAP Header的方式，由客戶端發送驗證數據，服務端驗通過后基WS訪問權限

首先根據我的這篇Blog

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

配置WS Server和WS Client，其中Client端的測試代碼類名由Client改為ClientTest,因為我們要用到Xfire的一個名為Client的類

首先我們編寫服務端驗證類繼承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("請求必須包含驗證信息",org.codehaus.xfire.fault.XFireFault.SENDER);

}

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

if (token == null)

{

throw new org.codehaus.xfire.fault.XFireFault("請求必須包含身份驗證信息", org.codehaus.xfire.fault.XFireFault.SENDER);

}

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

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

try

{

//進行身份驗證，只有abcd@1234的用戶為授權用戶

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

//這語句不顯示

System.out.println("身份驗證通過");

else throw new Exception();

}

catch (Exception e)

{

throw new org.codehaus.xfire.fault.XFireFault("非法的用戶名和密碼", org.codehaus.xfire.fault.XFireFault.SENDER);

}

下面是Client發送授權信息

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 {

//為SOAP Header構造驗證信息

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);

}

為ClientTest.java加入以下代碼

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

等等，還沒有完，修改Services.xm為WS綁定Handler

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

<beans>

<name>HelloService</name>

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

<serviceClass>test.IHelloService</serviceClass>

<implementationClass>test.HelloServiceImpl</implementationClass>

</inHandlers>

</service>

</beans>

這樣我們就完成了編碼，下面啟動tomcat，運行客戶端代碼，本文為abcd@1234位授權用戶，使用abcd@1234,可以正常訪問WS,如果用錯誤帳號，則會有以下異常

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

org.codehaus.xfire.fault.XFireFault: 非法的用戶名和密碼

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則會有以下異常

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: 請求必須包含驗證信息

org.codehaus.xfire.fault.XFireFault: 請求必須包含驗證信息