XFire wssecurity 实现用户名密码验证 出错。高手请进
public static void main(String[] args) {
try
{

String serviceURL = "http://localhost:8080/WebStudy/services/TestHelloService";
Service srvcModel = new ObjectServiceFactory().create(ITestHelloService.class);
XFireProxyFactory factory = new XFireProxyFactory(XFireFactory.newInstance().getXFire());
ITestHelloService service = (ITestHelloService)factory.create(srvcModel,serviceURL);

Client client = Client.getInstance(service);
client.addOutHandler(new DOMOutHandler());
Properties properties = new Properties();
properties.setProperty(WSHandlerConstants.ACTION, WSHandlerConstants.SIGNATURE);
properties.setProperty(WSHandlerConstants.SIG_PROP_FILE, "META-INF/xfire/outsecurity.properties");
//添加用户名：
properties.setProperty(WSHandlerConstants.USER,"admin");
properties.setProperty(WSHandlerConstants.PW_CALLBACK_CLASS, PasswordHandler.class.getName()); properties.setProperty(WSHandlerConstants.SIG_KEY_ID, "IssuerSerial");
client.addOutHandler(new WSS4JOutHandler(properties));
System.out.println(service.sayHello("Web Service"));
}
catch(Exception ex)
{
System.out.println(ex);
}
}

上面那是客户端调用的代码，红色部分编译不过去，
因为这个PasswordHandler类是服务器端定义的，这个代码是客户端的，所以找不到。

但是我从网上查了好多，大家都是这么用的，我想问一下，这个地方应该怎么修改。

------解决方案--------------------
我记得本地是要实现这个类的吧