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私はprimefacesでjsfを使用してWebアプリケーションを開発しています。1つのログインアクションと2つのxhtmlページを使用しました。ログインすると、アクション クラスが呼び出され、次の xhtml ページに戻りません

ページをリダイレクトする際の問題私はprimefaces 3.2バージョンのjarファイルを使用し、プロジェクトファセットでjstlを使用してjsfを構成しました。

私のログインxhtmlページ

<!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>

私のアクションクラス

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;
    }
}

私の web.xml ファイル

<?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>

そして私のfaces-config xmlファイル

<?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>

誰でもこの問題を解決するのを手伝ってもらえますか

4

1 に答える 1

2

でナビゲーションを使用するには、 ではなく 属性p:commandButtonを使用する必要があります。actionactionListener

ボタンを次のように変更します。

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

あなたのコードでは、他のすべてが問題ないようです。

より詳しい情報 ：

于 2013-06-18T06:21:36.937 に答える