apache deltaspike0.5的入门小例子
seam3已经宣布不再发布新的版本。据seam论坛说，seam的开发成员去了apache deltaspike，所以，开始apache deltaspike的体验。
这个例子是一个简单的登录，与权限无关。
1.环境：
jboss7.1.1.final
jdk1.7
jsf2.1
deltaspike0.5（cdi的扩展）
picketlink2.5.2（安全框架）
2.首先给出一个简单的登录页面。
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:messages globalOnly="true"/>
<h:form id="loginForm" rendered="#{not identity.loggedIn}">
<div class="loginRow">
<h:outputLabel for="name" value="Username" styleClass="loginLabel"/>
<h:inputText id="name" value="#{loginCredentials.userId}"/>
</div>
<div class="loginRow">
<h:outputLabel for="password" value="Password" styleClass="loginLabel"/>
<h:inputSecret id="password" value="#{loginCredentials.password}" redisplay="true"/>
</div>
<div class="loginRow">
</div>
<div class="buttons">
<h:commandButton id="login" value="Login" action="#{identity.login}" styleClass="loginButton"/>
</div>
<p>demo about jpa and picketlink.</p>
</h:form>
<ui:fragment rendered="#{identity.loggedIn}">
<h:form>
Welcome <b>#{identity.account.loginName}</b>!
<h:commandButton value="Logout" action="#{identity.logout}" />
<p />
</h:form>
</ui:fragment>
</html>
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3.单击登录按钮{Login}时，将会触发action="#{identity.login}"事件，此事件自动调用BaseAuthenticator类的authenticate方法。
4.重写authenticate方法，用来从用户表中检查登录用户是否是存在于数据库中。
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package security;
import java.util.ArrayList;
import java.util.List;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.picketlink.annotations.PicketLink;
import org.picketlink.authentication.BaseAuthenticator;
import org.picketlink.credential.DefaultLoginCredentials;
import org.picketlink.idm.model.basic.User;
@PicketLink
public class SimpleAuthenticator extends BaseAuthenticator {
@Inject DefaultLoginCredentials credentials;
@Inject EntityManager em;
@Override
public void authenticate() {
String username,password;
Query query = null;
List result=new ArrayList();
username=credentials.getUserId();
password=credentials.getPassword();
//EntityManager em=BeanProvider.getContextualReference(EntityManager.class,false);
String sql="select * from webuser where username=:u and password=:p";
//我用的是jpa原生Sql，可以用其他的方式。
query=em.createNativeQuery(sql);
query.setParameter("u", username);
query.setParameter("p", password);
result=query.getResultList();
if(result.size()>0){
User u = new User(credentials.getUserId());
System.out.println(credentials.getUserId() +" logined.");
// if employee credentials.getUserId() login
u.setEmail(credentials.getUserId()+"@deltaspike.com");
u.setFirstName(credentials.getUserId());
u.setLastName(credentials.getUserId());
setAccount(u);
setStatus(AuthenticationStatus.SUCCESS);
}else{
setStatus(AuthenticationStatus.FAILURE);
// FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("Authentication Failure - The username or password you provided were invalid."));
}
}
}
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需要说明的：
1.用了maven，所以第一次运行要能够联网，才能下载需要的依赖包。
2.源码在这里http://download.csdn.net/detail/mihaisheng/6530503