欢迎文件忽略安全性约束

Question

我的web.xml:

    <context-param>
            <param-name>javax.faces.PROJECT_STAGE</param-name>
            <param-value>Development</param-value>
        </context-param>

        <welcome-file-list>
            <welcome-file>/secured/secure.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>*.xhtml</url-pattern>
        </servlet-mapping>

        <context-param>
            <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
            <param-value>true</param-value>
        </context-param> 
    <security-constraint>
        <web-resource-collection>
          <web-resource-name>Restricted</web-resource-name>
          <url-pattern>/secured/*</url-pattern>
          <http-method>GET</http-method>
          <http-method>POST</http-method>
        </web-resource-collection>
        <auth-constraint>
          <role-name>ADMIN</role-name>
        </auth-constraint>
      </security-constraint>
<login-config>
     <auth-method>FORM</auth-method>
     <realm-name>jdbc-realm</realm-name>
     <form-login-config>
       <form-login-page>/public/login.xhtml</form-login-page>
       <form-error-page>/public/error.xhtml</form-error-page>
     </form-login-config>
   </login-config>

我希望我的网络应用程序将未经授权的用户重定向到登录页面.有趣的事情我有这个工作,但我做了一些愚蠢的更改,现在访问localhost:8080我总是看到secure.xhtml即使没有登录.localhost:8080/secured/secure.xhtml重定向很好.

Answer 1

你没有<welcome-file>完全正确使用.应该表示其需要每当被请求的文件夹要服务的文件的文件名唯一,不论所请求的文件夹(根/,或/public/或/secured/等).

欢迎文件由内部转发提供,由执行RequestDispatcher#forward().内部转发不会触发安全限制.您需要发送重定向.

更改<welcome-file>为更合理的默认值,例如index.xhtml.

<welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
</welcome-file-list>

并在webapp的根目录中创建一个/index.xhtml.如果您需要将每个请求重定向/index.xhtml到/secured/secure.xhtml,那么基本上有两种方法:

1. 映射a Filter的URL模式/index.xhtml并response.sendRedirect("secured/secure.xhtml")在doFilter()方法内部调用.例如

   @WebFilter("/index.xhtml")
   public class IndexFilter implements Filter {
   
       @Override
       public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
           HttpServletResponse response = (HttpServletResponse) res;
           response.sendRedirect("secured/secure.xhtml"));
       }
   
       // ...
   }
   

2. 把一个<f:event type="preRenderView">在/index.xhtml其调用后台bean的方法这又做了externalContext.redirect("secured/secure.xhtml").例如

   <f:event type="preRenderView" listener="#{indexBean.redirect}" />
   

   同

   @ManagedBean
   @ApplicationScoped
   public class IndexBean {
   
       public void redirect() throws IOException {
           FacesContext.getCurrentInstance().getExternalContext().redirect("secured/secure.xhtml");
       }
   
   }