jsf登錄頁面重定向錯誤

我正在開發使用primefaces和jpa的jsf，並且我的屏幕沒有重定向到主頁面，但仍然存在於登錄頁面中而沒有顯示。jsf登錄頁面重定向錯誤

我的web.xml文件

<?xml version="1.0" encoding="UTF-8"?> 
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> 
    <display-name>Cation</display-name> 
    <welcome-file-list> 
    <welcome-file>login.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>*.xhtml</url-pattern> 
    </servlet-mapping> 
    <context-param> 
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name> 
    <param-value>resources.application</param-value> 
    </context-param> 
    <context-param> 
    <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description> 
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name> 
    <param-value>client</param-value> 
    </context-param> 
    <context-param> 
    <description> 
    This parameter tells MyFaces if javascript code should be allowed in 
    the rendered HTML output. 
    If javascript is allowed, command_link anchors will have javascript code 
    that submits the corresponding form. 
    If javascript is not allowed, the state saving info and nested parameters 
    will be added as url parameters. 
    Default is 'true'</description> 
    <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name> 
    <param-value>true</param-value> 
    </context-param> 
    <context-param> 
    <description> 
    If true, rendered HTML code will be formatted, so that it is 'human-readable' 
    i.e. additional line separators and whitespace will be written, that do not 
    influence the HTML code. 
    Default is 'true'</description> 
    <param-name>org.apache.myfaces.PRETTY_HTML</param-name> 
    <param-value>true</param-value> 
    </context-param> 
    <context-param> 
    <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name> 
    <param-value>false</param-value> 
    </context-param> 
    <context-param> 
    <description> 
    If true, a javascript function will be rendered that is able to restore the 
    former vertical scroll on every request. Convenient feature if you have pages 
    with long lists and you do not want the browser page to always jump to the top 
    if you trigger a link or button action that stays on the same page. 
    Default is 'false' 
</description> 
    <param-name>org.apache.myfaces.AUTO_SCROLL</param-name> 
    <param-value>true</param-value> 
    </context-param> 
    <listener> 
    <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class> 
    </listener> 
</web-app>

我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_1_2.xsd" 
    version="1.2"> 
    <managed-bean> 
     <managed-bean-name>home</managed-bean-name> 
     <managed-bean-class>com.cation.action.LoginAction</managed-bean-class> 
     <managed-bean-scope>request</managed-bean-scope>  
    </managed-bean> 
    <navigation-rule> 
     <navigation-case> 
      <from-outcome>home_page</from-outcome> 
      <to-view-id>/pages/homePage.xhtml</to-view-id> 
     </navigation-case> 
    </navigation-rule> 
</faces-config>

我login.xhtml

<html xmlns="http://www.w3c.org/1999/xhtml" 
    xmlns:f="http://java.sun.com/jsf/core" 
    xmlns:h="http://java.sun.com/jsf/html" 
    xmlns:p="http://primefaces.prime.com.tr/ui"> 
<h:head> 
    <link type="text/css" rel="stylesheet" href="themes/bluesky/skin.css" /> 
</h:head> 
<h:body> 
    <center> 
    <p:panel header="Login Form" style="width: 350;"> 
     <h:form> 
      <h:panelGrid columns="2" cellpadding="2"> 
       <h:outputLabel for="#{home.username}" value="UserName"/> 
       <h:inputText value="#{home.username}" label="UserName"></h:inputText> 
       <h:outputLabel for="#{home.password}" value="Password"/> 
       <h:inputSecret value="#{home.password}"></h:inputSecret> 
       <h:commandButton type="submit" value="Login" action="#{home.validateUser}"></h:commandButton> 
      </h:panelGrid> 
     </h:form> 
    </p:panel> 
    <div><h:messages ></h:messages></div> 
    </center> 
</h:body> 
</html>

index.jsp文件

<jsp:forward page="login.xhtml"></jsp:forward>

我的登錄操作文件

package com.cation.action; 

import java.util.List; 

import javax.persistence.EntityManager; 
import javax.persistence.EntityManagerFactory; 
import javax.persistence.Persistence; 
import javax.persistence.Query; 

import logon.Users; 

public class LoginAction { 

    private String username; 

    private String password; 

    private static final String PERSISTENCE_UNIT_NAME = "Cation"; 

    private static EntityManagerFactory factory; 

    @SuppressWarnings("unchecked") 
    public String validateUser() throws Exception { 
     factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME); 
     EntityManager em = factory.createEntityManager(); 
     // Read the existing entries and write to console 
     Query q = em.createQuery("SELECT u FROM Users u where u.Login='"+username+"'"); 
     List<Users> userList = q.getResultList(); 
     Users user = (Users) userList.get(0); 

     if(user == null){ 
      return "error"; 
     } 
     /*// Create new user 
     em.getTransaction().begin(); 
     Users user = new Users(); 
     user.setName("Tom Johnson"); 
     user.setLogin("tomj"); 
     user.setPassword("pass"); 
     em.persist(user); 
     em.getTransaction().commit(); 

     em.close();*/ 
     return "home_page"; 
    } 

    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; 
    } 
}

當我使用的用戶名和密碼，它顯示在行動成功，但它不重定向到主頁在同一頁面仍然存在沒有任何顯示和URL顯示如登錄的問題是本地主機：8080 /陽離子/ login.xhtml

誰能plz幫助我解決它

來源

2013-05-17 Sathish Kumar k k

您的Faces Servlet網址映射是/ faces/*。所以你應該調用頁面localhost：8080/faces/login.xhtml在Faces Conntext中運行你的應用程序。此外，您應該有一個home_page.xhtml頁面，因爲您的操作會返回到該頁面。 – erencan

回報"home_page?facesRedirect=true"代替return "home_page";
我建議這樣的登錄方法：

public void login() throws IOException { 
    FacesContext  context; 
    HttpServletRequest request; 
    ExternalContext externalContext;   

    context = FacesContext.getCurrentInstance(); 
    request = (HttpServletRequest) context.getExternalContext().getRequest(); 
    externalContext = context.getExternalContext(); 

    try { 
     // try to login 
     request.login(username, password); 
     // login successful so remember logged user 
     loggedUser = userDao.findByName(username); 
     externalContext.redirect(requestedURI); 
    } catch (ServletException e) { 
     // Unknown login 
     context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, ejbUtils.getMsg("msgUnknownLogin"), null)); 
     loggedUser = null; 
    } 
    }

我認爲你在做什麼，都不會影響用戶有權查看受保護的頁面。它看起來像測試數據庫中現有的用戶和密碼。它適用於桌面（java se），但不適用於web（java ee）應用程序，因爲ee用戶可以通過它的地址訪問頁面，而不是通過菜單或按鈕。

查找基於表單的登錄示例。

來源

2013-06-27 14:52:58 Zbyszek

jsf登錄頁面重定向錯誤

回答

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