2013-06-18 25 views
1

重定向到下一頁我正在使用帶有primefaces的jsf開發web應用程序,我使用了一個登錄操作和2個xhtml頁面。當我登錄它調用操作類,它不會返回到下一個xhtml頁面使用jsf

重定向頁面中的問題我已經使用primefaces 3.2版本jar文件,並且我已經在項目構面中使用jstl配置了jsf。

我登錄XHTML頁面

<!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" 
     xmlns:p="http://primefaces.org/ui"> 

<h:head></h:head> 
<body> 
    <h:form styleClass="loginPanelStyle"> 
     <p:panel id="panel" header="Login"> 

     <p:messages id="msgs"/> 

     <h:panelGrid columns="3"> 
      <h:outputLabel for="firstname" value="UserName" /> 
      <p:inputText id="firstname" value="#{home.username}" required="true" label="UserName"> 
       <f:validateLength minimum="2" /> 
      </p:inputText> 
      <p:message for="firstname" display="icon"/> 

      <h:outputLabel for="surname" value="Password" /> 
      <p:inputText id="surname" value="#{home.password}" label="Password" required="true"> 
       <f:validateLength minimum="2" /> 
       <p:ajax update="msgSurname" event="keyup" /> 
      </p:inputText> 
      <p:message for="surname" id="msgSurname" display="icon"/> 

     </h:panelGrid> 

     <p:commandButton id="btn" value="Login" update="panel" actionListener="#{home.validateUser}"/> 
    </p:panel> 
    </h:form> 
</body> 
</html> 

我的Action類

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"; 
     } 
     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; 
    } 
} 

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> 
    <context-param> 
    <param-name>javax.faces.PROJECT_STAGE</param-name> 
    <param-value>Development</param-value> 
    </context-param> 
    <welcome-file-list> 
    <welcome-file>faces/login.xhtml</welcome-file> 
    </welcome-file-list> 
    <listener> 
    <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class> 
    </listener> 
    <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> 
    <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> 
</web-app> 

和我的臉,配置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"> 
    <navigation-rule> 
     <navigation-case> 
      <from-outcome>login</from-outcome> 
      <to-view-id>/login.xhtml</to-view-id> 
     </navigation-case> 
    </navigation-rule> 
    <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> 
    <managed-bean> 
     <managed-bean-name>user</managed-bean-name> 
     <managed-bean-class>com.cation.action.UserAction</managed-bean-class> 
     <managed-bean-scope>request</managed-bean-scope>  
    </managed-bean> 
    <navigation-rule> 
     <navigation-case> 
      <from-outcome>addUser</from-outcome> 
      <to-view-id>/pages/addUser.xhtml</to-view-id> 
     </navigation-case> 
    </navigation-rule> 
    <navigation-rule> 
     <navigation-case> 
      <from-outcome>successUser</from-outcome> 
      <to-view-id>/pages/success.xhtml</to-view-id> 
     </navigation-case> 
    </navigation-rule> 
</faces-config> 

任何一個可以幫助我解決這個問題

回答

2

要與p:commandButton使用導航,你需要使用action屬性,而不是actionListener

更改按鈕,這樣的:

<p:commandButton id="btn" value="Login" update="panel" action="#{home.validateUser}"/> 

其他的一切在你的代碼似乎罰款。

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