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我刚开始学习 Java EE。我的目标是为羽毛球运动员实现一个门户网站(使用 EJB 3 和 JSF),用户可以在其中发布和分析他们的结果。

为了简单起见(事实证明并非如此),我决定使用容器提供的安全系统(JBoss as7)。在出现一些问题后,我设法让身份验证/授权正常工作。但是,我有一个问题我无法解决。

当我尝试访问受保护的页面时,如预期的那样,我被安全系统拦截了。但是,在我登录后,我并没有重定向到我最初请求的页面。相反,我再次被要求登录。如果我手动输入原始地址,我可以毫无问题地访问该页面。

我在stackoverflow上阅读了很多线程,但无法解决我的问题。如果有人可以帮助我,我将不胜感激!

身份验证.java:

@ManagedBean
@SessionScoped
public class Authentication {

    private String username = "";
    private String password = "";

    private User user = new User();

    @EJB
    UserService service;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public User getUser() {
        return user;
    }

    public void login() {
        FacesContext context = FacesContext.getCurrentInstance();
        HttpServletRequest request = (HttpServletRequest) context
            .getExternalContext().getRequest();

        try {
            Principal userPrincipal = request.getUserPrincipal();
            if (userPrincipal != null) {
                request.logout();
            }
            request.login(username, password);
            user = service.find(username, password);
        } catch (ServletException e) {
            context.addMessage(null, new FacesMessage("Unknown login"));
        }
    }

    public String logout() {
        FacesContext.getCurrentInstance().getExternalContext()
            .invalidateSession();
        return "login";
    }
}

登录.xhtml

<h:body>
    <h:form>
        <h:outputLabel for="username" value="Username" />
        <h:inputText id="username" value="#{authentication.username}" required="true" />
        <h:message for="username" />
        <br />
        <h:outputLabel for="password" value="Password" />
        <h:inputSecret id="password" value="#{authentication.password}" required="true" />
        <h:message for="password" />
        <br />
        <h:commandButton value="Login" action="#{authentication.login()}" />
       <h:messages globalOnly="true" />
   </h:form>
</h:body>

主页.xhtml

<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'
xmlns:f='http://java.sun.com/jsf/core'
xmlns:h='http://java.sun.com/jsf/html'
xmlns:ui='http://java.sun.com/jsf/facelets'
xmlns:p="http://primefaces.org/ui">
<h:head>
    <link type="text/css" rel="stylesheet"
        href="#{request.contextPath}/themes/cupertino/skin.css" />
</h:head>
<h:body>
    <h:form>
        <h:commandButton action="login" value="Log in" />
    </h:form>
</h:body>

web.xml

....
<display-name>BadmintonPortal</display-name>
<welcome-file-list>
    <welcome-file>/pages/protected/user/user_home.xhtml</welcome-file>
</welcome-file-list>
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
    <url-pattern>*.jsf</url-pattern>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<context-param>
    <param-name>primefaces.THEME</param-name>
    <param-value>cupertino</param-value>
</context-param>

<!-- Protected area definition -->
<security-constraint>
    <web-resource-collection>
        <web-resource-name>Restricted Area - ADMIN Only</web-resource-name>
        <url-pattern>/pages/protected/admin/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>admin</role-name>
    </auth-constraint>
</security-constraint>
<security-constraint>
    <web-resource-collection>
        <web-resource-name>Restricted Area - USER and ADMIN</web-resource-name>
        <url-pattern>/pages/protected/user/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>user</role-name>
        <role-name>admin</role-name>
    </auth-constraint>
</security-constraint>

<!-- Login page -->
<login-config>
    <auth-method>FORM</auth-method>
    <form-login-config>
        <form-login-page>/pages/public/login.xhtml</form-login-page>
        <form-error-page>/pages/public/loginError.xhtml</form-error-page>
    </form-login-config>
</login-config>

<!-- System roles -->
<security-role>
    <role-name>admin</role-name>
</security-role>
<security-role>
    <role-name>user</role-name>
</security-role>

编辑:

忘记包含faces-config.xml文件

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

<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_1.xsd"
    version="2.1">

    <navigation-rule>
        <navigation-case>
            <from-outcome>login</from-outcome>
            <to-view-id>/pages/protected/user/user_home.xhtml</to-view-id>  
            <redirect/>
        </navigation-case>
    </navigation-rule>
</faces-config>

jboss-web.xml

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

<jboss-web>
    <context-root>BadmintonPortal</context-root>
    <security-domain>java:/jaas/BadmintonPortalRealm</security-domain>
</jboss-web>

编辑2:

工作解决方案

@ManagedBean
@ViewScoped
public class Authentication {
    ...
    public Authentication() {
        ExternalContext eContext = FacesContext.getCurrentInstance()
            .getExternalContext();
        uri = (String) eContext.getRequestMap().get(
            RequestDispatcher.FORWARD_REQUEST_URI);
    }

    public void login() {
        FacesContext context = FacesContext.getCurrentInstance();
        HttpServletRequest request = (HttpServletRequest) context
            .getExternalContext().getRequest();

        try {
            Principal userPrincipal = request.getUserPrincipal();
            if (userPrincipal != null) {
                request.logout();
            }
            request.login(username, password);
            user = service.find(username, password);
            context.getExternalContext().getSessionMap().put("user", user);
            context.getExternalContext().redirect(uri);
        } catch (ServletException e) {
            context.addMessage(null, new FacesMessage("Unknown login"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public String logout() {
        FacesContext.getCurrentInstance().getExternalContext()
            .invalidateSession();
        return "login";
    }
}
4

1 回答 1

8

您通过使用 JSF 表单来接管登录部分,该表单在提交时在 JSF 托管 bean 中执行编程登录。如果您使用的是直接提交到本答案j_security_check第一部分中概述的容器管理身份验证 URL 的纯 HTML 表单,那么您确实会自动被重定向到初始页面。

但是,由于您自己使用 JSF 进行登录,那么您也应该自己使用 JSF 导航到初始页面。由于登录页面通常由服务器端 forward by 打开RequestDispatcher#forward(),因此最初请求的页面可用作请求属性,其名称由RequestDispatcher.FORWARD_REQUEST_URI常量指定。因此,在 JSF 术语中,可用如下方式:

String originalURI = (String) externalContext.getRequestMap().get(RequestDispatcher.FORWARD_REQUEST_URI);

(请记住,在它返回的情况下有一个备用 URL null,即直接打开它而不先点击受限 URL 时)

收集它的最佳位置是@ViewScoped与登录页面关联的 bean 的(后)构造函数。使用当前会话范围的 bean 方法,最好将其设置为视图范围,并在登录期间明确地将其User放入会话范围,如下所示:

externalContext.getSessionMap().put("user", user);

这样,用户可以#{user}直接通过而不是#{authentication.user}.

于 2012-11-16T17:57:35.647 回答